9310 and 158 have very similar chemical makeup. Their yield and tensile strength are almost identical. Nitride or melonite will not make it stronger. It will give it a harder surface for wear. Craig. Posted: 10/31/2015 9:47:51 PM EDT. [#2] 158 bolts are also nitride/melonited.Brownells 9310 vs PSA H&R C158 BCG for 607 build I hate not knowing, doing my research, and realizing how confused I am, and knowing much less than I thought - which one boys & girls? Locked post. New comments cannot be posted. Share Add a Comment. Be the first to comment Nobody's responded to this post yet. ...Machined from carpenter 158 steel. High Pressure Tested (HPT) Magnetic Particle Inspected (MPI) ... the bolt is made from 9310 steel, and the rear body is made from 7075 (T6) aluminum to aid in weight reduction. ... titanium can be stronger than steel but weigh 45% less. The total weight of this titanium BCG is 7.9 oz. Faxon Gunner Light Weight ...Carpenter 158 Stockist Round Bar Forging Stock, Equivalent Carpenter 158 of Technical Datasheet Material Inventory Steel Forging, Specifications of Carpenter 158 Material Properties Performance specifications. ... Steel strip: THK0.15 ~ 2.50 X W8.0 ~ 200mm Flat bar (Thickness X width): 10 ~ 350 X 15 ~ 850mm Length: Fixed length or random length ...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 then shot peened (stress relieved) and finished with the same Ion Bond DLC as the carrier.See how we test. The $949.99 base model of the XPS 13 has a Core i3 CPU, 8GB of memory, a 256GB solid-state drive, and a 1,920-by-1,200-pixel non-touch screen. It's silver with a black interior ...(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 carrier is made of AISI 8620 aircraft-quality steel, the Carpenter Technology No. 158 Alloy is used for the bolt, and the gas key is made from 4130 Chromoly steel. ... The bolt on this one is made from case-hardened 9310 steel which has been shot-peened and magnetic particle inspected for maximum durability and reliability.Choose from either the very popular 9310 steel or the mil-spec 158 Carpenter steel. Both are modern ultra-high strength steels designed specifically for applications where high strength and durability are of paramount importance. ... 9310 or Carpenter 158 Steel: Bolt Finish: Nickel Boron: Caliber: 223/5.56/300 Blackout: …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 ...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.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 15When 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.Carpenter Technologies' 158 blend of steel was selected as it provided adequate strength and wear characteristics. 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 ...Bolt Steel Carpenter No 158 Steel Profile Full Auto Profile Gas Key Grade 8 Hardened Fasteners Staked per MilSpec Features This Toolcraft Logod 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. AR 15 BOLT CARRIER GROUP BrownellsIf I remember right, Carpenter 158 is an exclusive brand spec where 9310 is an ASTM or other standard. Sanwizard Sanwizard. Full Member. Minuteman. Dec 11, 2018 132 72 Charleston South Carolina. ... 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 ...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 10Features. 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 operational reliability.Can somebody tell me what the difference is between c-158 and 9310 and why 9310 isn't mil-spec? ... Thread: Carpenter 158 Vs. 9310. Thread Tools. Show Printable Version; 04-29-17, 14:46 #121. AR-556. View Profile View Forum Posts View Articles Member Join DateBCGs 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?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 Jun 2010 Location MN Posts 947 Feedback Score 6 …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?For starters, the bolt is made from 9310 steel which when properly heat treated is just about as durable as Mil-spec Carpenter 158 steel… In addition to that, the bolt is Magnetic Particle Inspected (MPI) which means that is inspected for weak points, and the carrier is constructed from 8620 which is an incredibly solid steel…LESCALLOY 9310 VAC-ARC steel has machinability rating of 40% of B1112 steel. FORMS AVAILABLE Billets; hot rolled bars, cold drawn and centerless ground bars; forgings. APPLICATIONS Aircraft Engine Gears and Pinions HEAT TREATMENT Annealing: Heat uniformly to 1475-1575°F (802-857°C), furnace cool. Normalizing: Heat uniformly to 1650-1750°FThere 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.JSW Steel News: This is the News-site for the company JSW Steel on Markets Insider Indices Commodities Currencies StocksHardness. 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.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 a great value. You should know that many would say ...Firearm Discussion and Resources from AR-15, AK-47, Handguns and more! Buy, Sell, and Trade your Firearms and Gear.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. Batch MPI and HPT tested. Tensile strengths of 1550-1600 mpa, or ...(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...Firearm Discussion and Resources from AR-15, AK-47, Handguns and more! Buy, Sell, and Trade your Firearms and Gear.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 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.In the case of the M16 family, the US military selected a steel called Carpenter 158 (also known as "C158" or "Car 158") to be used for manufacturing the bolt. Therefore, any AR15 or M16 bolts that claim to follow military specifications (or "mil-spec" for short) should be made of C158 steel as one of the requirements.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 ...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.Jul 25, 2009 · Carpenter Technologies' 158 blend of steel was selected as it provided adequate strength and wear characteristics. 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 ...Jun 10, 2019 · Target said: 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.Firearm Discussion and Resources from AR-15, AK-47, Handguns and more! Buy, Sell, and Trade your Firearms and Gear.Bren. 79807 posts · Joined 2005. #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. The left are a coalition of ...Bolt Steel Carpenter No 158 Steel Profile Full Auto Profile Gas Key Grade 8 Hardened Fasteners Staked per MilSpec Features This Toolcraft Logod 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. AR 15 BOLT CARRIER GROUP BrownellsBusiness, Economics, and Finance. GameStop Moderna Pfizer Johnson & Johnson AstraZeneca Walgreens Best Buy Novavax SpaceX Tesla. CryptoI would assume that 9310 has the potential to be heat treated, stress relieved, hardened, shot peened, etc into a good 5.56 bolt. But it would be folly to overlook the truly massive amount of research that has gone into the Carpenter 158 bolt we have now.The test gears used for this work were manufactured from AISI 9310 steel. The nominal chemical composition of the AISI 9310 material is given in Table 3. The gears were case carburized and heat treated according to Table 2 . The nominal properties of the carburized gears have a case hardness of Rockwell C60, a case depth of 0.038 in., and a ...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 ...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 ...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.Carpenter 158 comes from one place, and one place only, Carpenter Technology of Reading PA. AISI 9310 steel can be sourced from any number of foundries, Carpenter being one of them. Needless to say, 9310 is more easily obtainable. Posted: 12/16/2016 12:41:00 AM EDT. [#5]These steels contain elements such as chromium, cobalt, nickel, etc. In comparison with carbon steels, alloy steels are a lot more responsive to mechanical and heat treatments. Alloy steels can be subjected to unique melting and deoxidization processes for specific kinds of applications. AISI 9310 alloy steel is a low alloy steel containing ...September 5, 2023 | 4:33 pm. When choosing high-performance bolts, steel type cannot be compromised. The steel used determines the bolt’s quality, strength, and durability. …Lugs were a little more beefy, made from 9310 Vac Arc steel. Seemed to be a little more rugged looking than your standard mil. spec. bolt made from Carpenter 158. A few other minor differences. I have never installed or run this bolt before and was curious if anyone else has had any experience with bolts made from 9310 Vac Arc steel?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. Also, since Carpenter has never made or tested any bolts using 9310, I fail to see how anything they say with regard to its use is of any relevance whatsoever.MSRP: $139.99. Price: $119.00. — You save $20.99. Quantity: Add to Wish List. Description. Additional Information. This bolt carrier is manufactured from case hardened 8620 steel with properly staked 4130 steel gas key. The accompanying bolt is Carpenter 158, shot peened, HPT and MPI tested, and finished in a self-lubricating polished black ...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 ...Firing Pin: Mil Spec firing pin made of 8740 steel, center-less ground and Hard Chrome coated Bolt Assembly: The Bolt is "true" Mil Spec dimension and external surfaces are CNC ground after heat treat for a precision fit. Material: Case Hardened 9310 Steel. Carpenter 158 is available for an additional charge.Bolt Material: Machined from Mag Particle Inspected Carpenter 158 or 9310 Steel. Barrel: 20" Fluted, Chrome Lined with A2 Flash Suppressor. Barrel Material: 4150M Chrome Moly Vanadium 11595E Stee. Rifling: 1 Turn in 10" - Right Hand Twist - 6 Lands & Grooves.Lugs were a little more beefy, made from 9310 Vac Arc steel. Seemed to be a little more rugged looking than your standard mil. spec. bolt made from Carpenter 158. A few other minor differences. I have never installed or run this bolt before and was curious if anyone else has had any experience with bolts made from 9310 Vac Arc steel?Bolt Material: Machined from Mag Particle Inspected Carpenter 158 or 9310 Steel. Barrel: Fluted 20″ Stainless Steel - Matte Finish with Sling Stud. Barrel Material: Precision 416R Stainless Steel. Rifling: 1 in 8″ - Right Hand Twist. Stock: Standard A2 Stock with Dipped Wood Grain Finish.Wilson combat 9310 steel - on sale for $98.57. BCGs are coming down in price and I want to buy a couple of good quality ones while prices are good. I have a Palmetto State Armory premium 158 Carpenter steel bolt carrier group on the way, I ordered it last week for $109. The other BCG I was looking at was the Rainier Arms for $119 and a lifetime ...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.Technical Data Sheet. Alloy 9310 Vac-Arc (LESCALLOY 9310 VAC ARC ®) is a carburizing steel which has high hardenability, high core hardness together with high fatigue strength. The premium quality of alloy 9310 make it ideally suited for critical aircraft engine gears. Alloy 9310 Vac-Arc (LESALLOY 9310 VAC ARC ®) is available in bar (round bar) .Mil-Spec Carpenter 158® steel bolt; Shot Peened for Increased Strength per Mil-Spec; Additional information. Weight: 2 oz: Dimensions: 3 × 1 × 1 in: Reviews There are no reviews yet. Only logged in customers who have purchased this product may leave a review. Share On Facebook. Tweet This Product. Pin This Product.Brownells TiN Lightweight BCG. Their bolt uses 9310 steel, but again…it is likely never going to matter and is the standard for lightweight builds. It weighs in a little heavier than the Titanium counterparts at 8.2 ounces but is less than half the price. Brownells TiN Lightweight BCG, Rear.But since you asked nicely: From Faxon: "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.Carpenter 158 9310 - MAY be harder than Carpenter 158 Nickel baron (easier to clean) Titanium BCG with an S7 bolt. Supposed to be three times more impact resistance than Carpenter 158 ... There has been an increase use in 9310 steel for bolts over C158. 9310 steel claims a slight advantage of toughness when properly heat …Description CarTech No. 158 alloy is a chrome-nickel alloy steel with an analysis representing the best case hardening steel known for parts subject to heavy shock and wear. This alloy is ideally suited for jobs where an extra measure of core strength is required. Fully treated, CarTech No. 158 alloy attains a core strength of approximately 160 ...Milspec is C158. 9310 is very common in commercial bolts. Either will work. I’d still sooner use a nitride carrier over all others, with chrome second and other coatings including NiB down the list somewhere. In a ‘two is one, one is none’ philosophy, either material can be seen in broken bolts, but in a properly set up rifle it’s rare ...Firearm Discussion and Resources from AR-15, AK-47, Handguns and more! Buy, Sell, and Trade your Firearms and Gear.Technical Data Sheet. Alloy 9310 Vac-Arc (LESCALLOY 9310 VAC ARC ®) is a carburizing steel which has high hardenability, high core hardness together with high fatigue strength. The premium quality of alloy 9310 make it ideally suited for critical aircraft engine gears. Alloy 9310 Vac-Arc (LESALLOY 9310 VAC ARC ®) is available in bar (round bar) .The interesting thing about Carpenter 158 is that it is a proprietary steel alloy and its formula and method of manufacturing are not publicly defined. Therefore, there is no SAE standard for it and the sole manufacturer of this steel is a company called Carpenter Technology in Pennsylvania. ... In general, bolts made of 9310 steel are the ...Firearm Discussion and Resources from AR-15, AK-47, Handguns and more! Buy, Sell, and Trade your Firearms and Gear.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.The difference is in the steel. Many manufacturers will state that properly heat treated 9310 is approximately 7-8% "stronger" than 158, but 9310 requires that it be heat treated properly to achieve that increase in strength. Carpenter 158 is mil-spec, but many companies nowadays are opting for "stronger" steels like 9310 and S7 which are both ...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 ...The carrier is made of AISI 8620 aircraft-quality steel, the Carpenter Technology No. 158 Alloy is used for the bolt, and the gas key is made from 4130 Chromoly steel. ... The bolt on this one is made from case-hardened 9310 steel which has been shot-peened and magnetic particle inspected for maximum durability and reliability.Bolt Steel Carpenter No 158 Steel Profile Full Auto Profile Gas Key Grade 8 Hardened Fasteners Staked per MilSpec Features This Toolcraft Logod 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. AR 15 BOLT CARRIER GROUP Brownells. Description CarTech No. 158 alloy is a chrome-nickeChemical Composition. One of the biggest differences between 3 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 NBS .223/5.56 Black Nitride Bolt Carrier Group was designed w Dec 10, 2013 · Wilson combat has a 9310 steel Bolt Carrier Group on sale for $98.57, which is something like $70 off regular price. The three main BCGs I am looking at right now: PSA premium 158 Carpenter - was on sale for $109 when I put my order in Rainier Arms 158 Carpenter - on sale for $119 Wilson combat 9310 steel - on sale for $98.57.Both SAE-AISI 9310 steel and SAE-AISI H13 steel are iron alloys. They have a moderately high 93% of their average alloy composition in common. There are 23 material properties with values for both materials. Properties with values for just one material (10, in this case) are not shown. For each property being compared, the top bar is SAE-AISI ... The most common material for AR-15 bolts is Carpenter 158 steel or Mil...
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