Hardness. S7 tool steel has a hardness of 48-52 HRC, while Carpenter 158 has a hardness of 60-62 HRC. The higher hardness of Carpenter 158 makes it more suitable for use in applications where wear resistance is important, such as cutting tools and dies. However, the higher hardness makes Carpenter 158 more difficult to machine than S7 tool steel.Jan 11, 2006 ... Metals Handbook (1985) shows 9310 at a BHn of 241 for annealed, 269 for normalized. Recommended starting SFM with carbide tooling is 300.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, return it to us for a brand new replacementHeat treatment: solution heat treated to 1800 degrees F, held for 60 minutes, then quenched and cooled to -100 degrees F and held for at least 8 hours. Rockwell Industries is a specialty metals distributor and service center of stainless steels, nickel alloys, cobalt alloys, alloy steels, titanium and aluminum.We did this for y'all, figured enough people asked so we would provide, expanded our bolt offerings to include five different AR15 bolts using carpenter 158 steel 5.56 standard 5.56 K-SPEC enhanced dual ejector LH 5.56 K-SPEC enhanced dual ejector 7.62x39 K-SPEC enhanced dual ejector 458/450 K-SPEC enhanced dual ejectorWe are a global leader in high-performance specialty alloy-based materials and process solutions for critical applications in the aerospace, transportation, defense, energy, industrial, medical, and consumer electronics markets. Safety. As our top value, we're proud to create a culture of safety in everything we do.Carpenter 158 Vs. 9310; If this is your first visit, be sure to check out the FAQ by clicking the link above. ... But Carpenter cares little or nothing about whether bolts made from 158 steel break prematurely or not. Carpenter has never made or even tested a single bolt, and doesn't warranty any of the bolts manufactured using it's 158 steel ...Order 9310 from Sullivan Steel today. Toggle navigation. HOME; About Us. Overview; Our Services; Just in Time Inventory; Our NJ Facility; Careers at Sullivan; Our Steel. Steel Comparison Chart; Summary; 52100 Steel (100Cr6) 9310 Steel (AMS 6265) 8620 Steel (AMS 2301) M50 Steel (AMS 6491) BG-42® (AMS 5749) XD15NW® Bar; XD16N Bar;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.While most individuals will argue that 9310 steel is just as strong as Carpenter 158, 9310 steel bolts rely upon proper heat treatment for this strength. 9310 bolts have a documented history of breaking due to improper heat treating as the 9310 steel heat treat procedure requires very strict control in order to meet the specified surface and ...Bolt Material: Machined from Mag Particle Inspected Carpenter 158 or 9310 Steel. Barrel: 16" M4 Profile, Chrome Lined with A2 Flash Suppressor. Barrel Material: 4150 Chrome Moly Vanadium 11595E Steel w. M4 Feed Ramps. Rifling: 1 Turn in 9" - Right Hand Twist.Bolt Material: Machined from Mag Particle Inspected Carpenter 158 or 9310 Steel. ... Barrel Material: 4150M Chrome Moly Vanadium 11595E Steel. Rifling: 1 Turn in 10" - Right Hand Twist - 6 Lands & Grooves. Stock: 6 Position Telescoping Buttstock with Windham Weaponry Logo. Forend: Windham Weaponry 15″ MLOK Free-Float Handguard.Carpenter 158® (CarTech® No.158®) is a chrome-nickel alloy steel best suited for parts subject to heavy shock and wear. Carpenter 158 supplied by Rockwell Industries is ideally suited for jobs where an extra core strength is required. Fully treated, Carpenter 158 attains a core strength of approximately 160 ksi (1103 MPa) tensile strength ...Bolt Material: Machined from Mag Particle Inspected Carpenter 158 or 9310 Steel. Barrel: 16.5" Medium Profile, Chrome Lined with A2 Flash Suppressor. Barrel Material: 4150M Chrome Moly Vanadium 11595E Steel. Rifling: 1 Turn in 10" - Right Hand Twist - 6 Lands & Grooves. Stock: 6 Position Telescoping Buttstock w. TimberTec Camo Finish.Both SAE-AISI 4140 steel and SAE-AISI 8620 steel are iron alloys. Their average alloy composition is basically identical. For each property being compared, the top bar is SAE-AISI 4140 steel and the bottom bar is SAE-AISI 8620 steel. SAE-AISI 4140 (SCM440, G41400) Cr-Mo Steel SAE-AISI 8620 (SNCM220, G86200) Ni-Cr-Mo Steel.What is the difference between Carpenter 158 and 9310 steel? Carpenter 158 is the military specification (mil-spec) for bolts. 9310 is a more modern steel which can be up to 8% stronger than Carpenter 158. They are both premium steels with a long and successful history of use in AR15 bolts. Either will serve you well!Carpenter 158 Vs. 9310. Printable View. Show 40 post(s) from this thread on one page ... Quote: Originally Posted by vicious_cb. Do you know if diamaco uses carpenter 158 for their bolts? As far as I know the only modern use for carpenter 158 is for AR bolt. The rest of the tool steel industry has moved on to better steels. Both KAC and LMT are ...For material, Carpenter 158/C-158 is great and practically a standard. 9310 is a bit better (~5% harder than c-158 iirc), but apparently it is harder to do correctly because it has a narrower production temperature. ... Personally I prefer Carpenter 158 steel, but 9310 is probably fine too. All mine happen to be PSA Premium, but I would not ...Carpenter 158 Steel also known as Cartech-158, C-158 mil spec steel is a case (surface) hardened steel where 8620 is through hardened. C-158 is very hard on the outside to prevent wear and crack formation while 8620 inside is softer and more flexible to prevent crack propagation and absorb shock loads. Few of applications for carpenter-158 ...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.Shelton Precision/ Inert Haze DEA Carbine, we hit production and the fun just started, I thought you guys would want to see / NFS post, please don't ask, I can take personal questions on IG @SheltonPrecisionClick 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.This alloy is considered to be a benchmark alloy because it has a superior combination of strength and fracture toughness for a structural steel. As shown in Table 1, Cartech AerMet 100 alloy has been averaging 246 ksi yield strength, 287 ksi ultimate tensile strength, and 16.1% elongation with a fracture toughness of 120 ksi√in. CVN impact ...SONS OF LIBERTY BOLT CARRIER GROUP: Best Bolt Carrier in the industry! Bolt: Precision machined from Carpenter Technology No. 158 chrome-nickel alloy. Heat treated per mil-spec, Shot peened per ASTM B851/SAE AMS2430S, Vibratory tumbled. Individual high pressure/proof (HP) test. Full Auto test fired at assembly.Chemical Composition. One of the biggest differences between 309 and 316 stainless steel is their chemical composition. 309 stainless steel contains 22% chromium and 12% nickel, while 316 stainless steel contains 16% chromium, 10% nickel, and 2% molybdenum. Adding molybdenum sets 316 apart from 309, further increasing its corrosion resistance.Fort Lauderdale, FL 33303. ISO 9001: 2015 certified distributor of steel in a wide range of alloys, sizes and forms including abrasion resistant and aircraft steel. Alloys include alloy 4130, alloy 4140, alloy 4330, alloy 4340, alloy 9310, stainless steel, tool steel and carbon steel. Also ISO 9001: 2008 certified distributor of aircraft ...Alloys examined were AISI 9310 VIM VAR, AMS 6308, Pyrowear® 675 (two variations; tempered at 925°F and at 550°F), and CSS-42L TM (tempered at 925°F) with stainless steel 440C, in hardened condition, as a base line. Except for the 440C specimens, all other specimens were sectioned gear teeth.Firearm Discussion and Resources from AR-15, AK-47, Handguns and more! Buy, Sell, and Trade your Firearms and Gear.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 figured out how to make 9310 better than "mil-spec." Faxon uses 9310 in their bolts and so does Noveske. Aero precision and Brownells, which are more budget ...Interior of Bolt Carrier Carrier Key & Bolt Carrier are chrome lined on the M16 Phosphate Bolt Carrier Group only. M16 Bolt Carrier will function in semi-auto or full-auto AR-15/M16. Gas Key Screws are properly torqued and staked. Bolt and Bolt Carrier feature a matte black mil-spec finish. SPECS: Bolt - Carpenter 158 steel, Magnetic Particle ...Enter 9310. This is an AISI standard grade of tool steel that, when properly heat-treated, is approximately 7% stronger than Carpenter 158. With heat treatment, ...BCGs can be made of materials such as Carpenter 158 steel, 8620 steel, or 9310 steel, and are often coated with finishes like phosphate or nickel boron. 4. What is the significance of a properly staked gas key on a BCG?Material matters, and the Carpenter 158 steel of the standard Mil-spec bolt is suboptimal for such a high-load application leading to a life expectancy of only about 6,000 rounds. In fact, standard bolts will start to show stress cracks on the locking lugs adjacent to the extractor cut after only 3,000 rounds while cracking at the cam pin hole ...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.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). And it should be shot peened to ensure durability ...Enter 9310. This is an AISI standard grade of tool steel that, when properly heat-treated, is approximately 7% stronger than Carpenter 158. With heat treatment, ...We did this for y'all, figured enough people asked so we would provide, expanded our bolt offerings to include five different AR15 bolts using carpenter 158 steel 5.56 standard 5.56 K-SPEC enhanced dual ejector LH 5.56 K-SPEC enhanced dual ejector 7.62x39 K-SPEC enhanced dual ejector 458/450 K-SPEC enhanced dual ejectorSKU 51655115274 Brand Palmetto State Armory Model Number 51655115274 UPC 51655115274 DETAILS Manufacturer: Toolcraft Caliber: 5.56/.223 Bolt Finish: Nitride Bolt Steel: Carpenter No. 158 Steel Profile: Full Auto Profile Gas Key: Grade 8 Hardened Fasteners, Staked per MilSpec FEATURES This Toolcraft Logo'd Nitride BCG is made …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 …Jun 29, 2013 · A little more expensive, but easier to heat treat with little if any distortion. You can get 55 c scale with S-7 air quench. The other two have to be done in a carbon gas atmosphere . S-7 has a higher shock rating, but slightly less in the wear and abrasion than 9310 or 158.A: Despite being on paper a stronger material choice after heat treatment, most of the bolt failures I'm seeing are 9310 bolts. I like our C158 bolts because ...The NBS .223/5.56 DLC Bolt Carrier Group was designed with strength in mind. Starting with a 9310 Steel Bolt, which is aircraft-grade material, this bolt has a high core strength rating, a high fatigue strength, and a high hardenability rating. 9310 steel, when treated properly, is about 7% better than Carpenter 158 steel, so you know that you will have a dependable BCG, when you drop this ...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. ... difficult to machine and extremely temperamental in behaviour. The steel industry has advanced since the specification of Carpenter 158 but the basic ...JSW Steel News: This is the News-site for the company JSW Steel on Markets Insider Indices Commodities Currencies StocksStainless steel pans are kitchen workhorses, but they have an ever so slight learning curve, particularly when it comes to searing food without it sticking. Letting the pan get nic...The bolt is CNC machined from heavy duty 9310 alloy steel. 9310 steel has a high core & fatigue strength rating, a high hardenability rating, and when properly treated it is actually about 7% stronger than the "mil-spec" Carpenter 158 steel. The bolt is shot peened (stress relieved) and finished with the same Nickel Boron finish as the carrier.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. ... This will quickly move the solution beyond the simple question of which steel is best, for the best steel if applied out of context will not perform ...Firearm Discussion and Resources from AR-15, AK-47, Handguns and more! Buy, Sell, and Trade your Firearms and Gear.8740 steel firing pin with hard chrome finish. Magnetic particle inspected. Proudly made in the U.S.A. Nitride 5.56/223 Bolt Carrier Group (BCG) Nitride 5.56/223 Bolt Carrier Group (BCG) Product Specs: .233/5.56 NATO Salt bath nitride finish M16 cut 9310 steel carrier Carpenter 158 steel bolt 4140 steel extractor MIL-SPEC O-ring MIL-SPEC gas rin.Though Carpenter 158 and 8620 steel are used for making Mil-Spec AR-15s, M4s, and M16s, many commercial manufacturers also use other materials. For instance, Faxon …View at Faxon. Prices accurate at time of publishing. Known for their pencil-thin barrels, gunner profile barrels, and even their Ultralight FX5500 4.95 lb complete AR-15, Faxon also makes more affordable lightweight BCGs compared to other manufacturers. The Gunner BCG is made from 9310 steel and weighs 8.2 oz.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.Nov 16, 2013 · Now the bolts, they are made with AISI 9310 Steel, 9310 is better suited for an application such as a M16 bolt. 9310 is a steel typically used for gears, cams and things of that nature while Carpenter 158 or P6 tool steel is a plastic injection mold steel. 9310 is easier to machine and is more dimensionally stable in the heat treat process, this equates to better made parts.*The extractors are ...Carpenter 158 Vs. 9310; If this is your first visit, be sure to check out the FAQ by clicking the link above. ... I doubt it takes anywhere near a pound of steel to come out with a 3 or so ounce finished bolt. If it takes a third of a pound, that is still only $10 in the cost of a $50+ Bolt. IF the machine work and heat treat are similar, it ...Jan 14, 2020 · 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:(RTTNews) - Below are the earnings highlights for Carpenter Technology Corp. (CRS): Earnings: $6.2 million in Q2 vs. -$29.4 million in the same p... (RTTNews) - Below are the earn...The material composition, such as Carpenter 158 or 9310 steel, and the choice of coating, from phosphate to Diamond-Like Carbon (DLC), can significantly affect the BCG’s performance. Whether you’re building a new rifle or upgrading an existing one, understanding the implications of these choices is key to optimizing your AR-15’s …Remember Me? What's New? Forum; FAQ; Forum ActionsCan 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?A well regulated Militia, being necessary to the security of a free State, the right of the people to keep and bear Arms, shall not be infringed. PSA AR-15 complete MPI bolt assembly, made of carpenter 158 steel, shot peened. Fully machined 8620 steel extractor, black extractor insert. Mil-Spec Manganese Phosphate finish, MPI tested.Either finish should be fine. Carpenter 158 is the original specification but 9310 is theoretically stronger. Carpenter metal is the only source for 158 so you get consistency. 9310 can be sourced from anywhere that makes it. 9310 became popular when carpenter couldnt keep up with demand so manufacturers looked for alternatives.LMT's enhanced bolt is much tougher than anything made from Carpenter 158 or 9310 steel. In addition to the use of an excellent alloy and a better extractor, the enhanced bolt has redesigned locking lugs that also extend bolt life. A radius is cut into the top of each lug with another radius at the back of each lug where it meets the bolt body.Catastrophic NiB 9310 bolt failure. One part of a Mil-Spec bolt is that it is made from Carpenter 158 steel, but a more prevalent bolt material on the market is 9310 steel. This is sought after due to its lower cost and in a normal market, plentiful abundance. The downside of 9310 steel is that is has to be properly heated treated when used for ...Confused about choosing between brushed nickel and stainless steel faucet finishes? Our guide breaks it down for you. Learn more and make the right choice now! Expert Advice On Imp...A well regulated Militia, being necessary to the security of a free State, the right of the people to keep and bear Arms, shall not be infringed. PSA AR-15 complete MPI bolt assembly, made of carpenter 158 steel, shot peened. Fully machined 8620 steel extractor, black extractor insert. Mil-Spec Manganese Phosphate finish, MPI tested.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.Firearm Discussion and Resources from AR-15, AK-47, Handguns and more! Buy, Sell, and Trade your Firearms and Gear.Extractors are being made from these materials as an example. 440C and 17-4. These are stainless steels, and used in many parts sold as "stainless". 8620. This is case hardening steel, which is tough and as standalone responds little to heat treatment, but once case hardened, can be made into very tough, but on the surface very hard part.SKU 51655115274 Brand Palmetto State Armory Model Number 51655115274 UPC 51655115274 DETAILS Manufacturer: Toolcraft Caliber: 5.56/.223 Bolt Finish: Nitride Bolt Steel: Carpenter No. 158 Steel Profile: Full Auto Profile Gas Key: Grade 8 Hardened Fasteners, Staked per MilSpec FEATURES This Toolcraft Logo'd Nitride BCG is made …Firearm Discussion and Resources from AR-15, AK-47, Handguns and more! Buy, Sell, and Trade your Firearms and Gear.It also exhibits good strength, high toughness, hardenability, core strength, and very high fatigue strength. When annealed, 9310 has good ductility, machinability, and cold working properties. Additionally, 9310 is easily welded. It is typically used in gears, crankshafts, heavy-duty gears, the automotive, trucking, and aerospace industries."C158 vs 9130 bolt material" "Carpenter 158 9130 m16 bolt" "C158 9130 superior bolt material" Something along those lines... Someone please help me find this document as I believe that it's important info for the AR community to know. There are so many 9130 vs C158 threads and this could be the document that ends all of the arguments.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.Order 9310 from Sullivan Steel today. Toggle navigation. HOME; About Us. Overview; Our Services; Just in Time Inventory; Our NJ Facility; Careers at Sullivan; Our Steel. Steel Comparison Chart; Summary; 52100 Steel (100Cr6) 9310 Steel (AMS 6265) 8620 Steel (AMS 2301) M50 Steel (AMS 6491) BG-42® (AMS 5749) XD15NW® Bar; XD16N Bar;Mar 8, 2020 · 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."Bolt Steel: Carpenter No. 158 Steel. Profile: Full Auto Profile. Gas Key: Grade 8 Hardened Fasteners, Staked per MilSpec. FEATURES. This Toolcraft Logo'd Nitride BCG is made with a carpenter 158 bolt with a full-auto profile, designed to be used in AR-15 & M-16 style rifles. Bolt is magnetic particle inspected (MPI) for a uniform quality and ...Business, Economics, and Finance. GameStop Moderna Pfizer Johnson & Johnson AstraZeneca Walgreens Best Buy Novavax SpaceX Tesla. CryptoCarrier features 8620 steel with 158 Carpenter Steel bolt and 9310 tool steel extractor and cam pin. Much more than typical Parkerizing, phosphating... Add to Cart. Quick view. Noveske Bolt Carrier Group - Complete - 5.56. Noveske Rifleworks. $180.00 5.56 Bolt Carrier Group --Black Phosphate Finish --Mil-Spec --Shot peened & MP tested bolt ...9310 is a premium quality alloy carburizing steel, containing nickel, chromium and molybdenum. It has a high hardenability, high core hardness and high fatigue strength, all of which make it ideally suited for critical aircraft engine gears, automotive applications, structural components, gears, rods, heat-treatable shafts, high performance helicopter transmission gears, and other components ...Firearm Discussion and Resources from AR-15, AK-47, Handguns and more! Buy, Sell, and Trade your Firearms and Gear.8740 Steel Firing Pin with Hard Chrome Finish. Magnetic Particle Inspected. Available in AR-15 and AR-308 sizes. Engraved In House. Proudly Made In The USA. ENGRAVED AR Bolt Carrier Group (BCG) - Spider Web M16 Cut 9310 Steel Carrier Carpenter 158 Steel Bolt4140 Steel Extractor Mil-Spec O-Ring Mil-Spec Gas Rings4140 Steel Cam Pin8740 Steel ...Now the bolts, they are made with AISI 9310 Steel, 9310 is better suited for an application such as a M16 bolt. 9310 is a steel typically used for gears, cams and things of that nature while Carpenter 158 or P6 tool steel is a plastic injection mold steel. 9310 is easier to machine and is more dimensionally stable in the heat treat process, this equates to better made parts.*The extractors are ...Bet it is cheaper too. This, c158 has to be purchased in massive quantities, while 9310 can be purchase in a quantity more reasonable for a small company. Can also hold up to the stress a bolt is put under as well as 158 with proper heat treating. better actually however, the heat treating must be done right.Bolt Carriers made from 8620 Steel, 6A1-4V Titanium or Aluminum ... Bolts available in 9310 Steel or Carpenter 158; Lifetime Warranty. Our products carry a lifetime warranty. Simply put… Should any of our products fail, return it to us for a brand new replacement. Home; Products; Quality Requirements; Coatings;His company started the use of 9310 for AR bolts as a better steel type then Carpenter 158 which most high end AR15/M16 use 9310 now a days. Reactions ... He owned a company that built and sold AR uppers. His company started the use of 9310 for AR bolts as a better steel type then Carpenter 158 which most high end AR15/M16 use 9310 now a days. ...The NBS .223/5.56 DLC Bolt Carrier Group was designed with strength in mind. Starting with a 9310 Steel Bolt, which is aircraft-grade material, this bolt has a high core strength rating, a high fatigue strength, and a high hardenability rating. 9310 steel, when treated properly, is about 7% better than Carpenter 158 steel, so you know that you will have a …Fort Lauderdale, FL 33303. ISO 9001: 2015 certified distributor of steel in a wide range of alloys, sizes and forms including abrasion resistant and aircraft steel. Alloys include alloy 4130, alloy 4140, alloy 4330, alloy 4340, alloy 9310, stainless steel, tool steel and carbon steel. Also ISO 9001: 2008 certified distributor of aircraft ...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. While the two bolts have identical construction, the two coatings vary slightly.High Strength Stainless Steels. An alloy is generally considered a high strength stainless steel when it meets several key requirements. First, it must have an ultimate tensile strength (UTS) of 225 ksi (1550 MPa) or more, and a minimum yield strength (YS) of 200 ksi (1378 MPa). Tensile ductility must be good, with a minimum 10% elongation ...Carpenter 158 was originally developed as a dies steel and when carburized is best suited for application requiring high core strength and subjected to heavy shock and wear. Carburized 9310 is a very good steel when high core strength, toughness, fatigue, and wear properties are required. It's biggest use is in heavy duty gears and crankshafts.We also offer the Toolcraft DLC BCG with a 9310 grade tool steel bolt. This bolt steel is 7% stronger than even Carpenter 158 steel. Above: SpiceTac specifies MIL SPEC Carpenter 158 steel for the bolts in our Diamond DLC BCGs. Even great bolt steels like 9310 and C-158 won't overcome one weakness that the AR-15 has shown over the …There are 31 material properties with values for both materials. Properties with values for just one material (1, in this case) are not shown. For each property being compared, the top bar is SAE-AISI 52100 steel and the bottom bar is SAE-AISI 9310 steel. SAE-AISI 52100 (G52986) Chromium Steel SAE-AISI 9310 (1.6657, G93106) Ni-Cr-Mo Steel.. C158 minus proprietary source + molybdenum =Description CarTech No. 158 alloy is a chrome-nickel allo 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.The bolt is a critical component of the BCG and plays a key role in the reliability and function of the firearm. By upgrading to a high-quality bolt, you can improve the overall performance of your BCG. Look for bolts made from durable materials such as 9310 steel or Carpenter 158 steel, as these offer enhanced strength and longevity. The original specification calls for this part to View at Faxon. Prices accurate at time of publishing. Known for their pencil-thin barrels, gunner profile barrels, and even their Ultralight FX5500 4.95 lb complete AR-15, Faxon also makes more affordable lightweight BCGs compared to other manufacturers. The Gunner BCG is made from 9310 steel and weighs 8.2 oz. IIRC, the original specifications for the ...
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