Carpenter 158 vs 9310. This Toolcraft DLC Bolt Carrier Group is paired with a MIL-SP...

158 Mil Spec which means 158 material is on the TDP but a

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, ...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 …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.The Insider Trading Activity of CARPENTER ROBERT J on Markets Insider. Indices Commodities Currencies StocksThe 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 testedCarpenter 158 is 9310 with case hardening It's not, Carpenter 158 is a propitiatory steel alloy. It has similar (arguably superior) properties to 9310 but it is not 9310.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.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 10Our bolt assemblies are shot-peened and made from 9310. They are batch high pressure ... 9310 or carpenter 158. Finish: Black Nitride. Continue Browsing. Linear ...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 …158 vs 9310. there plenty of threads on that Sent from my SM-G900V using Tapatalk ... Bolts are carpenter 158 or 9310. The carrier is 8620 (should be). Where are you seeing bolts made from 8620, or carriers and keys …AR15 Toolcraft Nickel Boron BCG - 9310 Steel -or- Carpenter 158 Steel Bolt, MPI Inspected, expertly machined, and a hassle free Lifetime Warranty! Track Your Order. Need Help? Menu. Reloading. Once Fired Brass. Commercial Range Brass; ... 9310 Steel. Carrier Material: 8620 Steel. Manufacturer:9310 Carrier/Bolt Steel. This is superior to 8620. Its development came after the AR15 was originally designed. This steel provides enhanced heat and pressure resistance. The tensile strength is 910 MPa, and the yield strength is 570 MPa. You will sometimes find that 9310 steel is used in the forging of both carrier and bolt. Carpenter …Carpenter 158. Some consider Carpenter 158 the best steel grade for a bolt. It is chrome-nickel alloy steel. Industry specs say when case hardened, this is ideal for parts that experience heavy shock and wear. That describes a bolt perfectly. Carpenter Steel is also a proprietary alloy only available from Carpenter Technology. I find it ...Jul 15, 2014 ... 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 ...Firearm Discussion and Resources from AR-15, AK-47, Handguns and more! Buy, Sell, and Trade your Firearms and Gear. ... 9310 alloy steel as an acceptable bolt material and substitute for Carpenter 158 (Carpenters brand name AISI P6 Spec mold steel). 8620 Carrier. 9310 Bolt MP ...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.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.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.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 approximately 135 ksi (931 MPa). These high mechanical properties are developed in sections up to 5" (127 mm) thick, making Carpenter 158 a consideration for use in very large parts requiring maximum strength, wear …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 LocationIt 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.Jul 25, 2013 · The truth is, the standard Mil-spec C-158 (Carpenter 158) bolt has a number of factors limiting its performance, not the least of which is that the life expectancy of such bolts is 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. 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 ... Nov 17, 2021 ... ... 9310 steel and is magnetic particle inspected, features a nitride finish. On ... last a lot longer than a Carpenter 158 bolt. It's a stronger ...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 …Toolcraft Logo'd Carpenter 158 Nitride Full-Auto Bolt Carrier Group . Rating: 91%. Regular Price $129.99 Special Price $99.99. Add to Cart. Add to Wish List Add ...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 …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 15For 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.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 ...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 ...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 ...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 ...Those pits rusted and cracked more until the bolt failed. There is a long article on the internet somewhere..Google. 158 was chosen as a better material to replace 8620, 9310 was not around then, the standard has not been changed. Both 158 and 9310 can be had in a VAC melt grade which is the purest form of both alloys.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 - …Carpenter 158. Some consider Carpenter 158 the best steel grade for a bolt. It is chrome-nickel alloy steel. Industry specs say when case hardened, this is ideal for parts that experience heavy shock and wear. That describes a bolt perfectly. Carpenter Steel is also a proprietary alloy only available from Carpenter Technology. I find it ...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.Jul 25, 2013 · The truth is, the standard Mil-spec C-158 (Carpenter 158) bolt has a number of factors limiting its performance, not the least of which is that the life expectancy of such bolts is 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. Perhaps this is the wrong outlet to make this question, but can anyone tell me the difference in reliability and longevity between a bolt made from 9310 steel and Carpenter 158 steel? Does one resist shearing better but is more brittle, I assume something along those lines is the difference. 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. It has become evident from the industry that a number of manufacturers have jumped upon the AISI 9310 wagon in order to claim better performance. Toolcraft Inc. is an OEM manufacturer of bolt carrier groups (BCGs) for many AR15 makers. These companies know they can trust Toolcraft quality and are proud to have their logos applied to Toolcraft BCGs. Toolcraft products are also trusted by the U.S. Military and carry a lifetime warranty. Finish is Black Nitride which is a metal treatment ...Jul 25, 2013 · The truth is, the standard Mil-spec C-158 (Carpenter 158) bolt has a number of factors limiting its performance, not the least of which is that the life expectancy of such bolts is 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. 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.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 ...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 …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. 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 ...I’m aware that there are plenty of high quality 9310 steel bolts out there. I also know that it’s possible for high grade 9310 steel to be stronger than Carpenter 158 steel, if it’s heat treated properly. However, there are many suppliers of 9310 steel. And there’s some variation in the composition specifications for 9310 steel.Quoted: As I understand it, Carpenter 158 is a case (surface) hardened steel where 8620 is through hardened. This would allow 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 being through hardened can either be softer ...[#1] This is a debated topic. 9310 is supposed to be harder and more durable if heat treated correctly. They get a bad rap because when they first hit the market there were a lot that were not heat treated correctly and failed C158 is the Mil spec standard with a long track record of reliability. It is usually the most desiredWilson 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.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... Dec 10, 2013 · 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 ... 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. 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 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 TreatmentThough 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 Firearms use 9310 Steel bolts for their BCG, and V Seven Weapon System offers a bolt carrier in Grade 5 Titanium. These materials are actually stronger than Mil-Spec steel and are ...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.M16/AR15 Bolt - 9310 MPI (5.56) - Completion Kit - Black Nitride. ... When comparing 9310 vs 158 bolts, 9310 steel bolts provide a more reliable and durable base metal. The Melonite coating combined with 9310 steel is able to withstand more …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 ...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 (100%) Originally Posted by SilverBullet432.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. View All Quotes. better actually however, the heat treating must be done right.9310 is a standard. Carpenter 158 is proprietary alloy, and no real difference from 9310 in effective use of weaponry in a bolt. The difference between C-158 and 9310, I just don't see it. There is no evidence, let alone testing differences to the practical extent that it …158 vs 9310. there plenty of threads on that Sent from my SM-G900V using Tapatalk ... Bolts are carpenter 158 or 9310. The carrier is 8620 (should be). Where are you seeing bolts made from 8620, or carriers and keys …9310 is a standard. Carpenter 158 is proprietary alloy, and no real difference from 9310 in effective use of weaponry in a bolt. The difference between C-158 and 9310, I just don't see it. There is no evidence, let alone testing differences to the practical extent that it …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.. Aug 26, 2023 · Carpenter No. 158 Bolt Steel.IIRC, the original specifications for the GI issue model Firearm Discussion and Resources from AR-15, AK-47, Handguns and more! Buy, Sell, and Trade your Firearms and Gear.Feb 15, 2020 · 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 ... $ 185.00 $ 158.73 Add to cart. Sale! FREE SHIPPING ITEM! F 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 Whether we want to admit it or not, the goo...

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