HRC of 46 yields a 15% increase in hardness at the same toughness comparing to Carpenter 158 & 9310. Mil-Spec Extractor and Ejector Springs, Gas Rings. Technical Specification. Bolt: S7 Tool steel, …The most common is Carpenter 158 or C-158 steel, and the second most popular is 9310 steel. The exact difference between them is a lot of scientific talk but the easy version is that 9310-steel is about 7% stronger than C-158 when heat treated correctly.The Relia-Bolt™ is machined from S7 tool steel and tempered with SRC’s proprietary heat-treating process, significantly increasing strength when compared to MilSpec Carpenter 158. S7 provides a 75% increase in tensile strength, and nearly 60% improvement in yield strength.-See it at Sharps here. Low Plasticity Roller Ball Burnishing:Forty years ago, John Carpenter released a horror movie called The Thing. In the early ‘80s, Hollywood seemed to be extremely interested in extraterrestrial life and the not-quite-human: in 1982 alone, three of the top 30 movies were E.T., ...SKU: 5165449729 UPC: 5165449729 MFR#: 5165449729 Nickel Boron Finish Milspec Carpenter No. 158® steel bolt Shot Peened Bolt High pressure tested Mag particle inspected Gas Key Hardened to USGI Specifications Gas Key Grade 8 Hardened Fasteners Gas Key Staked Per Mil-Spec Tool Steel Extractor Extractor Spring Extractor O-ring Insert ToolCraft Logo PA-15 Engraving ToolCraft Premium Carpenter 158 ...9310 ALLOY STEEL – AMS 6265 VAR – UNS93106 DATA SHEET GENERAL CHARACTERISTICS: 9310 VAR AMS 6265 is a Chromium-Nickel-Molybdenum Alloy used as a Carburizing Grade for Aircraft Parts. Users can obtain high case hardness coupled with high core strength and toughness. High alloy content makes it suitable for use in relatively large cross-sections.158 Mil Spec which means 158 material is on the TDP but as soon as the next TDP holder submits this material change to 9310 the US Government will accept it, because there is not any durablity or function change. 158 is cheaper but 9310 can be purchased in lower amounts, which for most manufactures is even more important.9310 Steel, Carpenter 158. Coating Type: Diamond-Like Carbon (DLC) Caliber: 223 Rem, 300 Blackout, 350 Legend, 5.56 NATO. Carrier Material: 8620 Steel. Manufacturer: Toolcraft. Features: Forward Assist Serrations. Compatibility: Standard AR15 components. Bolt Material: 9310 Steel, C158 Steel. Arm or Ally is a stocking dealer for all Aero ...BOLT CARRIER GROUPS ARE WHERE THE RUBBER MEETS THE ROADWhile most people will say that the BCG is the heart of your rifle, most people don’t know why or whatI’d like to think that if you don’t have an issue with your BCG, then it’s probably a good one. One of the guys in my shooting group, Brandon, runs a DD BCG on his 11.5-inch AR-15 and has never had an issue. Even when the guys with the Gucciest bolt carrier groups were. 5. Sionics NP3 Bolt Carrier Group.Jul 17, 2014 · Posted: 7/17/2014 3:12:39 PM EDT. Sharps' Relia-Bolt has significantly come down on its price since its unveiling around the first of the year due to now being only $79.99. Being an S7 tool steel bolt with a NP3 finish for a hair less than $80, I decided to order one to try out in my upcoming build. I ordered it early Monday Morning, it shipped ... Compared to modern alloys, 158 is a very poor choice for carbine weapons, failing in as little as 3,000 rounds when pushed hard - 9310 is far superior in this respect. Continued.... Several have made claims that AISI 9310 has problems. Maybe it does. But it is a fact that 9310 is the most frequently used steel alloy for aircraft gears.Jul 17, 2014 · Posted: 7/17/2014 3:12:39 PM EDT. Sharps' Relia-Bolt has significantly come down on its price since its unveiling around the first of the year due to now being only $79.99. Being an S7 tool steel bolt with a NP3 finish for a hair less than $80, I decided to order one to try out in my upcoming build. I ordered it early Monday Morning, it shipped ... When comparing 8620 to Carpenter 158 you will notice that 158 has a much lower carbon content, and higher Chromium and Nickel content than 8620. 158 is truly an alloy metal, while 8620 is a low alloy metal. However in the world of steels that does not necessarily make it better but different.Bren · #2 · Aug 21, 2019. I looked at a couple of PSA kits recently and the only difference was that one had a 9310 bolt and one had a C158. I doubt it makes any difference, but the C158 is the mil spec, so it has been tried and tested a lot more for a lot longer, so I went with that.Want to sell my two unfired bcgs They both have zero rounds through them $80 each shipped. Paypal only. Ships out first thing tomorrow morning…Nov 14, 2013 · Thread: Carpenter 158 Vs. 9310. Thread Tools. Show Printable Version; 11-14-13, 18:32 #11. Mr blasty. View Profile View Forum Posts View Articles Member Join Date ... Apr 13, 2012 Messages 156 Location Goose Creek, S.C. Think I read somewhere that 9310 was stronger...but more likely to break wit alot of abuse due to 158 having some give Jul 26, 2013 #3 Paco Well-Known Member Joined May 1, 2012 Messages 358 LocationThere are different grades of 9310. Vac Arc being the highest. More and more bolts are being made from it because of availability. 158 is controlled by Carpenter and you have minimum weight orders to meet or they will not sell to you. Some say 9310 has a slight advantage over 158, but looking at the chemical makeup, they are very similar.9310 Steel, Carpenter 158. Coating Type: Diamond-Like Carbon (DLC) Caliber: 223 Rem, 300 Blackout, 350 Legend, 5.56 NATO. Carrier Material: 8620 Steel. Manufacturer: Toolcraft. Features: Forward Assist Serrations. Compatibility: Standard AR15 components. Bolt Material: 9310 Steel, C158 Steel. Arm or Ally is a stocking dealer for all Aero ...Aluminum is used in firearms in two alloys: 7075 and 6061. 6061 is commonly referred to as "aircraft" aluminum and has trace amounts of silicon, copper, manganese, molybdenum and zinc. 7075 is a much stronger alloy and has markedly larger amounts of copper, manganese, chromium and zinc. Forged bolts are really, really strong, And tough …8620 Steel vs 9310. At first glance, it makes sense to compare these 2 steels. They’re both low alloy steels with nickel and chromium. But the 9310 steel is much more reliably stronger, and with greater toughness as well. It offers greater tensile strength and yield strength.Can somebody tell me what the difference is between c-158 and 9310 and why 9310 isn't mil-spec? I've seen 9310 used in some bolts and wonder if it's actually inferior. Is there technical data to show that c-158 is superior?C 158 vs 9310 Bolt Just ordered a Aero Precision 6.5 bcg with bolt. Bolt is made of 158 carpenter instead of the 9310 i notice most others are. Is the 158 going to hold up fine its a hunting rig for a buddy that probly wont see a lot of rounds. Im sure ...Apr 17, 2019 ... This is typically going to be made of 9310 or Carpenter 158 steel. Bolt Parts: Bolt Body; Gas Rings; Lugs; Extractor; Ejector; Bolt face. Gas ...Bolt Carriers made from 8620 Steel, 6A1-4V Titanium or Aluminum. Keys made from 4130 Steel. Bolts available in 9310 Steel or Carpenter 158. Our products carry a lifetime warranty. Simply put Should any of our products fail, …Nov 14, 2013 · Results 11 to 20 of 141. Thread: Carpenter 158 Vs. 9310. Thread Tools. 11-14-13, 18:32 #11. Mr blasty. Member. Join Date. Jun 2010. Location. MN. Posts. 947. …Firearm Discussion and Resources from AR-15, AK-47, Handguns and more! Buy, Sell, and Trade your Firearms and Gear.Fully treated, Carpenter 158 attains a core strength of approximately 160 ksi (1103 MPa) tensile strength with a yield point of about 135 ksi (931 MPa).PSA Freedom AR-15 Nitride Bolt Carrier Group With Carpenter 158 Bolt - 516446915 . Rating: 95%. Regular Price $129.99 Special Price $89.99. Add to Cart. Add to Wish List Add to Compare. PSA 20" Rifle-Length 6.5 Grendel 1/8 Stainless Steel Barrel & BCG Combo - …May 12, 2016 · It has been the "Mil-Spec" since. Since the creation of Carpenter 158, the metals industry has continued to innovate, creating new blends of steels. 9310 is a AISI standard grade of tool steel that makes it about ~7% stronger than "mil-spec" Carpenter 158 steels, when appropriately treated. Firearm Discussion and Resources from AR-15, AK-47, Handguns and more! Buy, Sell, and Trade your Firearms and Gear. It’s MPI tested and otherwise mil-spec…except that the bolt is made of 9310 steel instead of Carpenter 158. The chances of that mattering for an average shooter that puts even a few thousand rounds downrange a year is super slim. In the back of your mind, you’ll know it’s not mil-spec…but it’s about half the price of the BCM.Toolcraft BCGs are generally available with bolts made from either 9310 or Carpenter 158 steel. They are batch High Pressure Tested (HPT) and every bolt is Magnetic Particle Inspected (MPI). Markings on the bolts vary with some being marked MP or MPI and some being marked 9310 or C158.Nov 14, 2013 · 11-14-13, 06:26 #1 eperk Member Join Date Aug 2012 Location Northeast MS. Posts 460 Feedback Score 0 Carpenter 158 Vs. 9310 Can somebody tell me what the difference is between c-158 and 9310 and why 9310 isn't mil-spec? I've seen 9310 used in some bolts and wonder if it's actually inferior. Is there technical data to show that c-158 is superior? Sep 5, 2023 · Among the various types of steel used in bolts, 9310 and C158 stand out as top contenders. Both are exceptionally strong and widely used in different industrial applications. This blog post will explore the properties, strengths, and limitations of 9310 …Typically, the carrier itself is machined from 8620 or 9310 steel, with the bolt itself being Carpenter 158. The firing pin may be 8740 steel and chrome ...Firearm Discussion and Resources from AR-15, AK-47, Handguns and more! Buy, Sell, and Trade your Firearms and Gear.Carpenter 158 and 9310 steel are the best materials for the bolt. And 8620 steel will work with the carrier, though it’s not strong enough for the bolt. Quality Control/Preparation. The right quality inspections for the bolt are high pressure tested (HPT) and magnetic particle inspected (MPI).Carpenter has never made or even tested a single bolt, and doesn't warranty any of the bolts manufactured using it's 158 steel. Conversely, LWD provides a lifetime guarantee on the bolt they engineered, tested, and manufactured using 9310. Carpenter's sales and profits are guaranteed by mil-spec mandates, regardless of final product performance ...The bolt assembly is machined from Carpenter No. 158® steel, shot-peened, MP marked, HP tested, and has a tool steel extractor that is machined from bar stock. Features: - 4340 Extractor spring, mil-spec insert and extractor retainer pin in mag phosphate - Mag phosphate ejector - Mil-spec stainless gas rings - 8620 carrier in FA profile chrome ...C-158 is simply Carpenters trade name for P-6 tool steel. P-6 and 9310 are very close in composition. The 9310 has some molybedenum while the P-6 has more chrome and nickel. 9310 is about half the cost of P-6. Which is better? Don't know, I barely made it through that class. IMO, the heat treat is probably more important than the alloy comp.May 29, 2022 · Why 9310 Steel in an AR-15 / M16 Bolt? Why is 9310 Steel the superior option for your AR-15/M16 Bolt? Well, 9310 is actually around 7% stronger than Carpenter 158 and is better than "mil-spec." faxonfirearms.com. 9. PSA Logoed Premium 5.56 Nickel Boron BCG with Carpenter 158 Bolt - 516446450 . Rating: 94%. Regular Price $199.99 Special Price $99.99. Add to Cart. Add to Wish ...Compared to modern alloys, 158 is a very poor choice for carbine weapons, failing in as little as 3,000 rounds when pushed hard - 9310 is far superior in this respect. Continued.... Several have made claims that AISI 9310 has problems. Maybe it does. But it is a fact that 9310 is the most frequently used steel alloy for aircraft gears.Jul 11, 2020 ... 9310 is a far more widely used material in the metal industry than is C-158, & IF, & that's a REALLY big IF, it's heat treated correctly, it may ...19. C 158 vs 9310 Bolt. Just ordered a Aero Precision 6.5 bcg with bolt. Bolt is made of 158 carpenter instead of the 9310 i notice most others are. Is the 158 going to hold up fine its …Simple, 9310 is an AISI standard grade tool steel which, when properly treated, actually makes it about 7% stronger than “mil-spec” Carpenter 158. The proof is in the numbers. The carrier material, 8620 is used for various aircraft and vehicular applications, has a superior toughness rating, and features solid overall strength properties.For each property being compared, the top bar is SAE-AISI 4140 steel and the bottom bar is SAE-AISI 9310 steel. SAE-AISI 4140 (SCM440, G41400) Cr-Mo Steel SAE-AISI 9310 (1.6657, G93106) Ni-Cr-Mo Steel. Metric Units US Customary Units. Mechanical Properties. Brinell Hardness: 200 to 310:Central NY. I read an article by Faxon ( manufacturer of barrels and other parts) and they claim that 9310 steel is better than Carpenter 158. C158 is MilSpec and at the time. a good steel. 9310 is newer and 7% better. Faxon has a good reputation for barrels. so I will take their word on this.The bolt assembly is machined from Carpenter No. 158® steel, shot-peened, MP marked, HP tested, and has a tool steel extractor that is machined from bar stock. Features: - 4340 Extractor spring, mil-spec insert and extractor retainer pin in mag phosphate - Mag phosphate ejector - Mil-spec stainless gas rings - 8620 carrier in FA profile chrome ...Well, 9310 is actually around 7% stronger than Carpenter 158 and is better than "mil-spec." faxonfirearms.com FWIW, Right To Bear has Toolcraft 9310 BCGs for $80.3. Toolcraft LOGO’D Premium 5.56 Nickel Boron BCG W/ Carpenter 158 Bolt. Number 3 on this list of the best PSA BCGs is the Toolcraft Logo’d Premium 5.56 Nickel Boron BCG with Carpenter 158 Bolt. Now you may be saying to yourself, that this is a Toolcraft BCG not a PSA BCG, but here’s the deal, Toolcraft makes a lot of BCGs for …HRC of 46 yields a 15% increase in hardness at the same toughness comparing to Carpenter 158 & 9310 Mil-Spec Extractor and Ejector Springs, Gas Rings While the two bolts have identical construction, the two coatings vary slightly. Here’s the information on both the DLC and NiB-X coatings. Technical Data on DLC Coating …Forty years ago, John Carpenter released a horror movie called The Thing. In the early ‘80s, Hollywood seemed to be extremely interested in extraterrestrial life and the not-quite-human: in 1982 alone, three of the top 30 movies were E.T., ...Can somebody tell me what the difference is between c-158 and 9310 and why 9310 isn't mil-spec? I've seen 9310 used in some bolts and wonder if it's actually inferior. Is there technical data to show that c-158 is …Apr 9, 2021 · If fact, 9310 response to thin section quenching is better that Carpenter 158. And, taking the leap between this statement:". . . by comparison to Carpenter 158, AISI 9310 has several elements present in its composition that are detrimental to fatigue while not being evident in the physical properties . . ." and this statement: All Toolcraft BCG bolts are shot-peened, MPI and batch HPT to ensure quality and reliability. Made from either mil-spec Carpenter 158 steel or high strength 9310 steel, bolt carrier groups from Toolcraft are guaranteed to perform like new for thousands and thousands of rounds. You cannot buy a better bolt carrier group than a Toolcraft.For instance; PSA, Aero Precision - both DPMS pattern- offer receivers, barrels, BCG's on their websites. What if I want to get a 3rd party BCG because of different specs - carpenter 158 vs 9310 bolt. Then - I assume the AR10 BCG will not run in …Jun 23, 2022 ... ... or better, provided it is made of the proper material, typically the bolt itself consisting of Carpenter 158 steel, and the carrier being 9310 ...HRC of 46 yields a 15% increase in hardness at the same toughness comparing to Carpenter 158 & 9310 Mil-Spec Extractor and Ejector Springs, Gas Rings While the two bolts have identical construction, the two coatings vary slightly. Here’s the information on both the DLC and NiB-X coatings. Technical Data on DLC Coating …Jun 10, 2019 · Central NY. I read an article by Faxon ( manufacturer of barrels and other parts) and they claim that 9310 steel is better than Carpenter 158. C158 is MilSpec and at the time. a good steel. 9310 is newer and 7% better. Faxon has a good reputation for barrels. so I will take their word on this. Carpenter Technology is leading innovation and excellence by leveraging our technical strengths, distinct products, and extraordinary process capabilities to provide you with value-added solutions that create breakthrough results. We help customers like you solve the most extreme materials challenges.Product Description. SAA AR-15 .223/5.56 Bolt Assembly Carpenter 158 - MPI Tested. Replacement Assembled Bolt for the .223/5.56/300AAC caliber AR-15 (or new ...Made in USA. Bolt is made of Mil-spec Carpenter 158 steel, Shot peened, High pressure tested and Mag Particle Inspected. Gas key is machined out of bar stock, chrome lined phosphate coated, and secured with grade 8 fasteners and staked per mil-spec. Bolt carrier is phosphated outside and chrome lined inside. Laser engraved with the PSA logo.Forty years ago, John Carpenter released a horror movie called The Thing. In the early ‘80s, Hollywood seemed to be extremely interested in extraterrestrial life and the not-quite-human: in 1982 alone, three of the top 30 movies were E.T., ...I've seen 9310 used in some bolts and wonder if it's actually inferior. Is there technical data to show that c-158 is superior? Carpenter 158 Vs. 9310 - Page 10The Relia-Bolt™ is machined from S7 tool steel and tempered with SRC’s proprietary heat-treating process, significantly increasing strength when compared to MilSpec Carpenter 158. S7 provides a 75% increase in tensile strength, and nearly 60% improvement in yield strength. Batch MPI and HPT testedHandling firearms or firearms parts can expose you to lead and other petroleum products known to the State of California to cause cancer, birth defects, or ...There are a couple of different popular bolt steels, notably 9310 and 158 Carpenter steel. Currently, MIL-SPEC steel based off Colt TDP is 158 Carpenter steel. The reason being is that it works, and it …SAA AR-15 .223/5.56 Bolt Assembly Carpenter 158 - MPI Tested. Replacement Assembled Bolt for the .223/5.56/300AAC caliber AR-15 (or new builds). Assembled, Phosphate finished AR15 Bolt. Completely assembled with standard bolt parts: Extractor assembly, Ejector assembly, Gas Rings. Works with any AR15 standard Carrier of any finish (Phosphate ...May 1, 2021 ... 9310 Steel – Keep in mind: even if you have a “mil-spec” BCG, most of the bolt components will actually be made by 9310 steel or Carpenter 158 ...Physical Properties of steel grade SAE 9310. Temperature. (°C) Modulus of elasticity. (GPa) Mean coefficient of thermal expansion 10-6/ (°C) between 20 (°C) and. Thermal conductivity. (W/m·°C)May 4, 2013 ... C158 is harder and might be a better option for that purpose / defense carbine. SAE 9310 is even harder and with C158 are popular in top tier ...C158 minus proprietary source + molybdenum = 9310, a slightly stronger steel with lower quench rates to be come hard and less likely to become brittle than C158. C158 bolt breakages are the biggest failure point for the AR-15 bolt carrier group, and is the biggest reason why C158 is not widely used outside of the AR-15.Machined from 8620 steel. Carrier has forward assist serrations. Mil-Spec phosphate coating. Properly staked gas key. Chrome lined gas key and bolt channel. 5.56 Bolt is machined from Carpenter 158 tool steel. Shot peened. HPT tested/MPI marked. Black o-ring insert on extractor.9310 Steel, Carpenter 158. Coating Type: Diamond-Like Carbon (DLC) Caliber: 223 Rem, 300 Blackout, 350 Legend, 5.56 NATO. Carrier Material: 8620 Steel. Manufacturer: Toolcraft. Features: Forward Assist Serrations. Compatibility: Standard AR15 components. Bolt Material: 9310 Steel, C158 Steel. Arm or Ally is a stocking dealer for all Aero ...A lot of manufacturers offer a completely 9310 steel bolt carrier group. Though, this is a relatively new phenomenon and some people prefer the tried-and-true 8620 and Carpenter 158 combination. From my perspective, however, 9310 is an excellent option and is objectively stronger than 8620 and Carpenter 158 steel. Can somebody tell me what the difference is between c-158 and 9310 and why 9310 isn't mil-spec? I've seen 9310 used in some bolts and wonder if it's actually inferior. Is there technical data to show that c-158 is superior?Jun 26, 2023 ... The steel used is properly hardened, but I don't think it's technically Carpenter 158. However, at under $170, an HPT and MPI-tested BCG is ...Carpenter 158 was what was spec'd in the 1950's when the rifle was made. One company in the world makes it, and it's Carpenter. Other metal alloys have come along since 1950-whatever that are definitely superior, I think 9310 is fine. So is polishing a radius on the cam pin hole in the bolt, which is where the cracks usually happen.Firearm Discussion and Resources from AR-15, AK-47, Handguns and more! Buy, Sell, and Trade your Firearms and Gear.Bolt Carriers made from 8620 Steel, 6A1-4V Titanium or Aluminum; Keys made from 4130 Steel; Bolts available in 9310 Steel or Carpenter 158Made in USA. Bolt is made of Mil-spec Carpenter 158 steel, Shot peened, High pressure tested and Mag Particle Inspected. Gas key is machined out of bar stock, chrome lined phosphate coated, and secured with grade 8 fasteners and staked per mil-spec. Bolt carrier is phosphated outside and chrome lined inside. Laser engraved with the PSA logo. The most popular steel alloys for BCGs are Carpenter 158 and 9310 steel. The BCG encounters plenty of stress and heat, which makes steel an ideal material. 9310 steel is strong and durable, making it common among manufacturers. Carpenter 158 is more commonly used by the military. Heat TreatmentJun 21, 2014 · The heat treatment process must be more closely controlled with 9310, from what I've read. I'm pretty sure Aermet 100 is a better steel than Carpenter 158 or SAE 9310. It's also made by Carpenter Technology Corporation. The Aermet 100 is about 3 times more expensive than Carpenter 158, but doesn't have lot minimums. Mcts estimated time, Golden entertainment team member self service, Gordon county inmate list, Power outage in shreveport, Optumrx pa form, Jumping world locations, China one menu georgetown indiana, Wwwpch.com act now, Icd 10 right great toe pain, Newell coach p50, Northganow email, Latitude apartments east champaign reviews, Wildy events rs3, Hoshun the fang
9310 Steel 9315 Steel 9315 Steel 9395 Steel 9395 Steel 9420 Steel 9420 Steel 9440 Steel 9440 Steel 94B17 Steel 94B17 Steel 9860 Steel 9860 Steel 98B45 Steel ... Carpenter No. 883 Steel Carpenter No.158 Steel Carpenter O1 Steel Carpenter O1 Steel Carpenter Pyrowear 675 Steel Carpenter Pyrowear 675 Steel Carpenter S2 Steel. Gm financial lienholder address for insurance
Apr 28, 2017 · I've seen 9310 used in some bolts and wonder if it's actually inferior. Is there technical data to show that c-158 is superior? Carpenter 158 Vs. 9310 - Page 11 On the other hand, Carpenter 158 steel is chosen for its toughness, shock resistance, and fatigue strength. As such, it sees use in firearm components, gears, shafts, and general machinery. What Is the Difference Between 9310 Steel and 8620 Steel? 9310 steel and 8620 steel are low-alloy steels with some key differences between them.Jul 11, 2020 ... 9310 is a far more widely used material in the metal industry than is C-158, & IF, & that's a REALLY big IF, it's heat treated correctly, it may ...SAE 9310 is even harder and with C158 are popular in top tier systems. ... Carpenter 158 is more common in top tier carrier groups. It is harder and stronger. 9310 is a very good steel too. both more suitable for bolts than 8620. Save. This is an older thread, ...Carpenter 158 is a legally protected alloy, so you are sure to get that grade. Stainless Steel. Stainless steel has at ... While this alloy may not be as strong as Carpenter 158 or 9310, it can still be useful in the carrier part of the BCG because it doesn’t bear as much force as the bolt. It doesn’t engage the chamber either ...Firearm Discussion and Resources from AR-15, AK-47, Handguns and more! Buy, Sell, and Trade your Firearms and Gear.The bolt assembly is machined from Carpenter No. 158® steel, shot-peened, MP marked, HP tested, and has a tool steel extractor that is machined from bar stock. Features: - 4340 Extractor spring, mil-spec insert and extractor retainer pin in mag phosphate - Mag phosphate ejector - Mil-spec stainless gas rings - 8620 carrier in FA profile chrome ...AIM Surplus Bolt Carrier Review. I just received the AIM surplus bolt carrier, which many of you may know about due to its amazingly low price of $79 dollars shipped. What interested me was the bolt material. Typically the AR15 community looks for C-158 which is a blend of steel from Carpenter. 9310 is also a Carpenter product, but the …In conclusion, 9310 and 158 steel have unique properties and characteristics that make them ideal for certain applications. 9310 steel is tougher and more impact-resistant, while 158 steel is more corrosion-resistant. When choosing between the two, it’s important to consider your project’s specific requirements and needs.This bolt carrier group is high pressure tested as well as magnetic particle inspected, and it’s shot peened for added durability. The bolt is Carpenter 158 steel and the carrier is 8620 steel. And it has a Mil-Spec phosphate, matte black finish. The BCG has a shrouded firing pin and works in both full-auto M16s and semi-auto AR-15s.9310 Steel, Carpenter 158. Coating Type: Diamond-Like Carbon (DLC) Caliber: 223 Rem, 300 Blackout, 350 Legend, 5.56 NATO. Carrier Material: 8620 Steel. Manufacturer: Toolcraft. Features: Forward Assist Serrations. Compatibility: Standard AR15 components. Bolt Material: 9310 Steel, C158 Steel. Arm or Ally is a stocking dealer for all Aero ...Physical Properties of steel grade SAE 9310. Temperature. (°C) Modulus of elasticity. (GPa) Mean coefficient of thermal expansion 10-6/ (°C) between 20 (°C) and. Thermal conductivity. (W/m·°C)Can somebody tell me what the difference is between c-158 and 9310 and why 9310 isn't mil-spec? I've seen 9310 used in some bolts and wonder if it's actually inferior. Is there technical data to show that c-158 is superior?Jan 6, 2014 · Carpenter 158 is a case (surface) hardened steel where 8620/9310 is through hardened. Case hardening allows C-158 to be very hard on the outside to prevent wear and crack formation while the inside is softer and more flexible to prevent crack propagation and absorb shock loads. 8620/9310 being through hardened can either be softer and better at ... Apr 28, 2017 · I've seen 9310 used in some bolts and wonder if it's actually inferior. Is there technical data to show that c-158 is superior? Carpenter 158 Vs. 9310 - Page 11 Aug 26, 2023 · Carpenter No. 158 Bolt Steel. This is Mil-Spec steel for bolt fabrication and offered case hardened steel to prevent cracking and surface wear. Tensile Strength: 1103 MPa; Yield Strength: 931 MPa; 9310 Steel. Similar to Carpenter No. 158 and is used for both carrier and bolt manufacturing, it is more widely available and is more affordable. Faxon 6.5 Grendel "Type 2" .136 9310 Bolt Carrier Complete - Nitride. $165.00. Faxon. 1. 2. Next. Browse our selection of AR bolts and bolt carrier groups including: tin or titanium nitride bcg's. We strive to create the best bolt carrier groups and bolts.The bolt assembly is machined from Carpenter No. 158® steel, shot-peened, MP marked, HP tested, and has a tool steel extractor that is machined from bar stock. Features: - 4340 Extractor spring, mil-spec insert and extractor retainer pin in mag phosphate - Mag phosphate ejector - Mil-spec stainless gas rings - 8620 carrier in FA profile chrome ...3. Toolcraft LOGO’D Premium 5.56 Nickel Boron BCG W/ Carpenter 158 Bolt. Number 3 on this list of the best PSA BCGs is the Toolcraft Logo’d Premium 5.56 Nickel Boron BCG with Carpenter 158 Bolt. Now you may be saying to yourself, that this is a Toolcraft BCG not a PSA BCG, but here’s the deal, Toolcraft makes a lot of BCGs for …May 12, 2016 · It has been the "Mil-Spec" since. Since the creation of Carpenter 158, the metals industry has continued to innovate, creating new blends of steels. 9310 is a AISI …Aug 21, 2019 · Bren · #2 · Aug 21, 2019. I looked at a couple of PSA kits recently and the only difference was that one had a 9310 bolt and one had a C158. I doubt it makes any difference, but the C158 is the mil spec, so it has been tried and tested a lot more for a lot longer, so I went with that. Made in USA. Bolt is made of Mil-spec Carpenter 158 steel, Shot peened, High pressure tested and Mag Particle Inspected. Gas key is machined out of bar stock, chrome lined phosphate coated, and secured with grade 8 fasteners and staked per mil-spec. Bolt carrier is phosphated outside and chrome lined inside. Laser engraved with the PSA logo.It has been the "Mil-Spec" since. Since the creation of Carpenter 158, the metals industry has continued to innovate, creating new blends of steels. 9310 is a AISI standard grade of tool steel that makes it about ~7% stronger than "mil-spec" Carpenter 158 steels, when appropriately treated.Sep 6, 2023 · Conclusion. In conclusion, 9310 and 158 steel have unique properties and characteristics that make them ideal for certain applications. 9310 steel is tougher and more impact-resistant, while 158 steel is more corrosion-resistant. When choosing between the two, it’s important to consider your project’s specific requirements and needs. SAA AR-15 .223/5.56 Bolt Assembly Carpenter 158 - MPI Tested. Replacement Assembled Bolt for the .223/5.56/300AAC caliber AR-15 (or new builds). Assembled, Phosphate finished AR15 Bolt. Completely assembled with standard bolt parts: Extractor assembly, Ejector assembly, Gas Rings. Works with any AR15 standard Carrier of any finish (Phosphate ...Jul 14, 2014 · Can somebody tell me what the difference is between c-158 and 9310 and why 9310 isn't mil-spec? I've seen 9310 used in some bolts and wonder if it's actually inferior. Is there technical data to show that c-158 is superior? Np. The firearmhistory had some great info. I suppose can 9310 be a better bolt material than C158, sure but it has to be heat treated properly in order to do so, and the improvement is less than 8%. So, as always, better make sure you're buying from a reputable manufacturer. I wouldn't pursue a 9310 bolt simply for the sake of having one made out …Sep 5, 2023 · For applications that require excellent toughness, wear resistance, and uniform hardness, 9310 steel bolts are a great option. For applications that require high strength, durability, and resistance to thermal shocks, C158 bolts are the ideal choice. Aug 12, 2023 · This bolt carrier group is high pressure tested as well as magnetic particle inspected, and it’s shot peened for added durability. The bolt is Carpenter 158 steel and the carrier is 8620 steel. And it has a Mil-Spec phosphate, matte black finish. The BCG has a shrouded firing pin and works in both full-auto M16s and semi-auto AR-15s. The above mentioned 8620 steel is also used by manufacturers to make bolts for certain rifle models. For instance, it was extensively used in World War II for the M1 Garand rifle. Actually, the original M16 rifles also used bolts made of 8620 steel, but the US military found that the bolts were wearing out after 40,000 - 50,000 shots, which is ...Oct 21, 2013 ... ... or to resale we'll call them company 1 and 2. ... But that does not mean that the Carpenter 158 is better than the 9310 bolt because it isn't.Sep 6, 2023 · Strengths and Weaknesses of Both Steel Types. While 9310 Tool Steel and Carpenter Steel have exceptional properties, they also have weaknesses. 9310 Tool Steel is known to be brittle at room temperature, while Carpenter Steel has a lower resistance to corrosion and oxidation. If cost is a major consideration for your project, Carpenter Steel ... For instance; PSA, Aero Precision - both DPMS pattern- offer receivers, barrels, BCG's on their websites. What if I want to get a 3rd party BCG because of different specs - carpenter 158 vs 9310 bolt. Then - I assume the AR10 BCG will not run in …Firearm Discussion and Resources from AR-15, AK-47, Handguns and more! Buy, Sell, and Trade your Firearms and Gear.Mar 8, 2020 · Well, 9310 is actually around 7% stronger than Carpenter 158 and is better than "mil-spec." faxonfirearms.com FWIW, Right To Bear has Toolcraft 9310 BCGs for $80. Nov 9, 2020 · I recently purchased a Toolcraft 5.56 NATO Black Nitride BCG....but choose 9310-Steel-Bolt instead of the Carpenter 158 steel bolt? Do I need to return it... Posted: 7/17/2014 3:12:39 PM EDT. Sharps' Relia-Bolt has significantly come down on its price since its unveiling around the first of the year due to now being only $79.99. Being an S7 tool steel bolt with a NP3 finish for a hair less than $80, I decided to order one to try out in my upcoming build. I ordered it early Monday Morning, it shipped ...AXIAL FATIGUE VS 9310 Maximum Stress Level (ksi) Nf, Cycles to Failure 200 180 160 140 100 120 80 1.E+04 1.E+05 1.E+06 1.E+07 1.E+08 AXIAL FATIGUE PROPERTY DATA Ferrium C61 9310 Kt = 1.0, R = 0.10 Shot peened 0.30 in. gage diameter LongitudinalPosted on 1/16/21 at 2:25 pm. 1 0. Been examining the differences between C158 and 9310 steel bolts for the AR platform, and now I'm more confused than before. C158 is supposed to technically be stronger than 9310, but many higher end BCG makers are now using 9310 instead of C158 for their bolts b/c they say 158 is antiquated and they have ...Made in USA. Bolt is made of Mil-spec Carpenter 158 steel, Shot peened, High pressure tested and Mag Particle Inspected. Gas key is machined out of bar stock, chrome lined phosphate coated, and secured with grade 8 fasteners and staked per mil-spec. Bolt carrier is phosphated outside and chrome lined inside. Laser engraved with the PSA logo.Jul 14, 2014 · Can somebody tell me what the difference is between c-158 and 9310 and why 9310 isn't mil-spec? I've seen 9310 used in some bolts and wonder if it's actually inferior. Is there technical data to show that c-158 is superior? C 158 vs 9310 Bolt Just ordered a Aero Precision 6.5 bcg with bolt. Bolt is made of 158 carpenter instead of the 9310 i notice most others are. Is the 158 going to ... I've seen 9310 used in some bolts and wonder if it's actually inferior. Is there technical data to show that c-158 is superior? Carpenter 158 Vs. 9310 - Page 10There are different grades of 9310. Vac Arc being the highest. More and more bolts are being made from it because of availability. 158 is controlled by Carpenter and you have minimum weight orders to meet or they will not sell to you. Some say 9310 has a slight advantage over 158, but looking at the chemical makeup, they are very similar.There are a couple of different popular bolt steels, notably 9310 and 158 Carpenter steel. Currently, MIL-SPEC steel based off Colt TDP is 158 Carpenter steel. The reason being is that it works, and it …Firearm Discussion and Resources from AR-15, AK-47, Handguns and more! Buy, Sell, and Trade your Firearms and Gear.Jun 23, 2022 ... ... or better, provided it is made of the proper material, typically the bolt itself consisting of Carpenter 158 steel, and the carrier being 9310 ...Feb 15, 2020 · Carpenter 158 is mil-spec, but many companies nowadays are opting for "stronger" steels like 9310 and S7 which are both tool steels used in large machines. …Carpenter bees are a common nuisance for homeowners, causing damage to wooden structures and outdoor furniture. While hiring a professional exterminator is one option, building your own carpenter bee traps can be a cost-effective and enviro...MPI = Magnetic Particle Inspected. Nitride is my choice over phosphate as it is an actual treatment and it's generally "slicker" and more corrosion resistant. Posted: 11/23/2017 3:40:51 PM EDT. [#2] Toolcraft does not make their own bolts. Just carriers. The bolts they use are top of the line. They offer 158 and 9310.Jun 21, 2014 · The heat treatment process must be more closely controlled with 9310, from what I've read. I'm pretty sure Aermet 100 is a better steel than Carpenter 158 or SAE 9310. It's also made by Carpenter Technology Corporation. The Aermet 100 is about 3 times more expensive than Carpenter 158, but doesn't have lot minimums. Simple, 9310 is an AISI standard grade tool steel which, when properly treated, actually makes it about 7% stronger than “mil-spec” Carpenter 158. The proof is in the numbers. The carrier material, 8620 is used for various aircraft and vehicular applications, has a superior toughness rating, and features solid overall strength properties.HRC of 46 yields a 15% increase in hardness at the same toughness comparing to Carpenter 158 & 9310 Mil-Spec Extractor and Ejector Springs, Gas Rings While the two bolts have identical construction, the two coatings vary slightly. Here’s the information on both the DLC and NiB-X coatings. Technical Data on DLC Coating …Simple, 9310 is an AISI standard grade tool steel which, when properly treated, actually makes it about 7% stronger than “mil-spec” Carpenter 158. The proof is in the numbers. The carrier material, 8620 is used for various aircraft and vehicular applications, has a superior toughness rating, and features solid overall strength properties.Carpenter No. 158 Bolt Steel. This is Mil-Spec steel for bolt fabrication and offered case hardened steel to prevent cracking and surface wear. Tensile Strength: 1103 MPa; Yield Strength: 931 MPa; 9310 Steel. Similar to Carpenter No. 158 and is used for both carrier and bolt manufacturing, it is more widely available and is more affordable.Sep 6, 2023 · Strengths and Weaknesses of Both Steel Types. While 9310 Tool Steel and Carpenter Steel have exceptional properties, they also have weaknesses. 9310 Tool Steel is known to be brittle at room temperature, while Carpenter Steel has a lower resistance to corrosion and oxidation. If cost is a major consideration for your project, Carpenter Steel ... Thread: Carpenter 158 Vs. 9310. Thread Tools. Show Printable Version; 04-29-17, 04:58 #111. sig1473. View Profile View Forum Posts View Articles Member Join Date Oct 2013 Location IN Posts 539 Feedback Score 25 (100%) Originally Posted by AR-556.... vs Semi-Auto Bolt Carrier Groups; Mil-Spec Bolt Carrier Groups; HPT and MPI Tested ... except that the bolt is made of 9310 steel instead of Carpenter 158. The ...Jul 14, 2014 · Can somebody tell me what the difference is between c-158 and 9310 and why 9310 isn't mil-spec? I've seen 9310 used in some bolts and wonder if it's actually inferior. Is there technical data to show that c-158 is superior? Friction vs Steel: Dry 0.1: Color: Black: MPI and HPT tested; Tensile strengths of 1550-1600 mpa, or 220,000-235,000 psi. Toughness of over 200 ft./lb. Charpy C-Notch; HRC of 46 yields a 15% increase in hardness at the same toughness comparing to Carpenter 158 & 9310; Mil-Spec Extractor and Ejector Springs, Gas Rings;C-158 is simply Carpenters trade name for P-6 tool steel. P-6 and 9310 are very close in composition. The 9310 has some molybedenum while the P-6 has more chrome and nickel. 9310 is about half the cost of P-6. Which is better? Don't know, I barely made it through that class. IMO, the heat treat is probably more important than the alloy …HRC of 46 yields a 15% increase in hardness at the same toughness comparing to Carpenter 158 & 9310 Mil-Spec Extractor and Ejector Springs, Gas Rings While the two bolts have identical construction, the two coatings vary slightly. Here’s the information on both the DLC and NiB-X coatings. Technical Data on DLC Coating …Oct 6, 2020 ... The downside of 9310 steel is that is has to be properly heated treated when used for a bolt, and this process is one that is difficult with ...Tiger Rock 9mm Caliber AR Complete Upper Receiver (2) $439.95 (Save $19.96) $419.99. Tiger Rock AR-15 Bolt Carrier Group (BCG) Assembly with Tactical Charging Handle Assembly $139.99 (Save $10.00) $129.99. 3 models Tiger Rock AR-9mm Complete Pistol Buffer Tube Kit (1) As Low As (Save Up to 20%) $55.99.SAE 9310 is even harder and with C158 are popular in top tier systems. ... Carpenter 158 is more common in top tier carrier groups. It is harder and stronger. 9310 is a very good steel too. both more suitable for bolts than 8620. Save. This is an older thread, ...IIRC, the original specifications for the GI issue model were for AQ-9310 (aircraft quality). The bolts were supposed to be good for 75K rounds, but most showed signs of cracking after 50-60K. ... The Carpenter 158 has to be purchased in 20,000 Lb lots and is roughly $5/Lb.Nov 14, 2013 · 11-14-13, 06:26 #1 eperk Member Join Date Aug 2012 Location Northeast MS. Posts 460 Feedback Score 0 Carpenter 158 Vs. 9310 Can somebody tell me what the difference is between c-158 and 9310 and why 9310 isn't mil-spec? I've seen 9310 used in some bolts and wonder if it's actually inferior. Is there technical data to show that c-158 is superior? If fact, 9310 response to thin section quenching is better that Carpenter 158. And, taking the leap between this statement:". . . by comparison to Carpenter 158, AISI 9310 has several elements present in its composition that are detrimental to fatigue while not being evident in the physical properties . . ." and this statement:Can somebody tell me what the difference is between c-158 and 9310 and why 9310 isn't mil-spec? I've seen 9310 used in some bolts and wonder if it's actually inferior. Is there technical data to show that c-158 is …... Carpenter 158, properly heat treated and shot peened. ... Why can't they tell us "here's what makes a 9310 bolt equivalent to or superior than ...Carpenter ants are anywhere from 2.4 to 13 millimeters in length, and they are black, brown, red, orange or yellow, according to Orkin. The color and size of carpenter ants vary based on the species and even within a colony.Click The Button Below To Learn More About The Toolcraft 5.56 Phosphate MPI Full-Auto BCG – No Logo (Over 195 Reviews!): 3. Toolcraft Nitride Full-Auto BCG (w/ Logo & Carpenter 158 Bolt) Number 3 on this list of fantastic BCGs is the Toolcraft Nitride Full Auto BCG, and there are a number of reasons why I like it.Technical Specs: • Gas system: Direct Impingement • Caliber: 5.56x45mm NATO/.223 Rem, .300 Blackout • Finish: Nickel Boron Coating • Bolt: 9310 Alloy Steel (High Hardness) or Mil-Spec Carpenter 158 • Carrier: 8620 …The 9310 steel is another common material for bolts and carriers, but it’s cheaper and not as strong as the Carpenter 158. The tensile strength of 9310 steel comes in at 910 MPa, while its yield strength is 570 MPa. Finally, the 8620 steel is the cheapest option, and you can usually find it on the carrier, not the bolt.Carpenter 158 and 9310 steel are the best materials for the bolt. And 8620 steel will work with the carrier, though it’s not strong enough for the bolt. Quality Control/Preparation. The right quality inspections for the bolt are high pressure tested (HPT) and magnetic particle inspected (MPI).On the other hand, Carpenter 158 steel is chosen for its toughness, shock resistance, and fatigue strength. As such, it sees use in firearm components, gears, shafts, and general machinery. What Is the Difference Between 9310 Steel and 8620 Steel? 9310 steel and 8620 steel are low-alloy steels with some key differences between them.Nitriding baths range up to 1165°f. That is beginning to approach the temperatures where steels used for bolts, like Carpenter 158 begin to anneal (soften). Carpenter's data sheets on the 158 Alloy state that it begins to anneal at 1250°f, so it is possible that an over-temperature nitriding bath could begin to soften the bolt material.Posted on 1/16/21 at 2:25 pm. 1 0. Been examining the differences between C158 and 9310 steel bolts for the AR platform, and now I'm more confused than before. C158 is supposed to technically be stronger than 9310, but many higher end BCG makers are now using 9310 instead of C158 for their bolts b/c they say 158 is antiquated and they have ...In conclusion, 9310 and 158 steel have unique properties and characteristics that make them ideal for certain applications. 9310 steel is tougher and more impact-resistant, while 158 steel is more corrosion-resistant. When choosing between the two, it’s important to consider your project’s specific requirements and needs.9310 or Carpenter 158 Steel: Bolt Finish: Nickel Boron: Caliber: 223/5.56/300 Blackout: Extractor O-ring: Viton; Mil Spec: Carrier Material: 8620 Steel, Toolcraft Proprietary: Carrier Finish: Nickel Boron: Carrier Design: M16 Full Auto Style: Gas Key Material: 4130 Steel: Cam Pin Material: 4140 Steel: Cam Pin Finish: Nickel Boron: Firing Pin .... 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