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]Surging Steel Stocks Might Be Set for a Cool-Down...NUE Steel stocks have been a solid support for investors in 2021. Indeed, after a protracted period of underperformance from sto...Bolt Material: Machined from Mag Particle Inspected Carpenter 158 or 9310 Steel. ... Barrel Material: 4150 Chrome Moly Vanadium 11595E Steel. Rifling: 1 in 10″ - Right Hand Twist. Stock: Magpul CTR Carbine Stock with Magpul ASAP QD Single Point Receiver End Plate.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.AR-15 bolts are typically made of high-strength materials like Carpenter 158 steel or 9310 steel, which provide durability and reliability under extensive use. 3. How is the AR-15 bolt different from other rifle bolts?It's made from 9310 Alloy Steel - Bolt Head - 9310 Steel is a low alloy steel that is a mixture of nickel, chromium, & molybdenum, (MPI) Inspected. ... What I will do, not necessary, but I have an extra bolt made from Carpenter 158, & I will use that inside the Mercury Precision LR-308 BCG, since 158 can flex well under pressure from CM round ...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 operational reliability.Jun 18, 2017 · 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?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 treated which gives ...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.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?May 12, 2016 · 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 ...Firearm Discussion and Resources from AR-15, AK-47, Handguns and more! Buy, Sell, and Trade your Firearms and Gear.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 ...An alloy providing high hardness and strength combined with exceptional ductility and toughness.Carpenter 158 is steel from the 60's, literally. Does not a 'best' BCG make. The carrier itself however, almost irrelevant. Reply reply 1000stomachcrunches • thanks for the info, his comment had me off on a hunt to learn more about 9310, didnt think to check if 158 is actually the best. Im normally more of a skeptic too. Reply reply ...c158 is carpenter 158 meaning only carpenter can supply the stock so it's held to their standards. many years back after a mass shooting there was a run on parts including bcgs and manufacturers couldn't get c158 in a steady enough supply so they looked at alternative metals including 9310. on paper 9310 is stronger when heat treated correct, but given the rush of production that wasn't always ...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: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.The first data sheet that mentions C-158 (or Carpenter No. 158) came out in 1981. They have no data that it existed before this date- at least not that they can find. IF, that is true, that would lead to believing that 8620 was the standard before this alloy was available (which is what many believe).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 ...AR-15 bolts are usually made of high-strength steel alloys such as Carpenter 158 or 9310 steel. 11. How reliable is the AR-15 bolt? When properly maintained, the AR-15 bolt is highly reliable and has been used extensively in military, law enforcement, and civilian applications. 12. Can the AR-15 bolt be modified or upgraded?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…Carrier 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 ...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.Metal Suppliers Online offers the widest selection & very best prices on Tool Steels Carpenter No. 158 Alloy(tm). ... 158 Plastic Mold Steel(tm) P6 Carpenter No. 158 (tm) Specifications: DIN 1.2735: UNS T51606: Chemistry Data. Carbon 0.05 - 0.15. Chromium 1.25 - 1.75. Iron ...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.Some steel grades accept nitriding more readily than others, such as low-carbon, low-alloy steels, including: Nitriding 135M; GKH®W; GKP®YW; When comparing nitriding vs. carburizing, a nitrided steel's surface (case) gets harder but not as deep as a carburized steel part. However, nitriding does offer superior corrosion resistance.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 …Sep 5, 2023 · 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. 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.I bought one thinking it had a Carpenter 158 bolt according to the product description. The bolt I received is marked MPI 9310. The have subsequently changed the description to Carpenter No. 9310 steel. They claim the extractor is tool steel machined, however it and the gas key appear to be MIM.Bolt Material: Machined from Mag Particle Inspected Carpenter 158 or 9310 Steel. Barrel: 18" Fluted, 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: Magpul MOE Fixed Buttstock.0. C158, 8620, 9310 BCG Steel. These are the (3) most common BCG steels being used in today's AR/M4 industry (from what I read about). I know just a little bit about metallurgy, but, not enough to distinguish what comes into play when each steel is used for BCG's. My (2) AR's use 9310 steel for the BCG's.0. C158, 8620, 9310 BCG Steel. These are the (3) most common BCG steels being used in today's AR/M4 industry (from what I read about). I know just a little bit about metallurgy, but, not enough to distinguish what comes into play when each steel is used for BCG's. My (2) AR's use 9310 steel for the BCG's.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 operational reliability.9310 steel vs 158 carpenter. 9310 steel vs 158 carpenter. Posted on October 16, 2023 05:10:01 AM | Views: 628Carpenter 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 …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!One of the most significant differences between 9310 and 4140 steel is their chemical composition. 9310 steel is alloyed with nickel, chromium, and molybdenum, while 4140 steel contains chromium and molybdenum. Adding nickel in 9310 steel makes it more resistant to stress and fatigue, while the higher chromium content in 4140 steel improves ...Carpenter 158, on the other hand, contains a high percentage of carbon, which makes it incredibly hard and strong. Additionally, Carpenter 158 has a higher tensile strength and yield strength than 8620 tool steel, which means it can handle heavier loads and higher stress. Another important factor to consider when comparing these two tool steels ...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 …I bought a Carpenter steel bolt years ago from Fulton Amory more out of convenience than choice (back ~1998 or so.) 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.Jan 1, 2020 · 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 replacement.What Is the Difference Between 9310 Steel and Carpenter 158 Steel? 9310 steel and Carpenter 158 steel differ in their composition and intended applications. …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 ...Dec 12, 2023 · 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. However, C-158 is Mil-Spec. Why is C-138 Mil-Spec if there is something better out there?Sep 6, 2023 ... 9310 steel is tougher and more impact-resistant, while 158 steel is more corrosion-resistant. When choosing between the two, it's important to ...The newer Carpenter AerMet alloy can achieve an ultimate tensile strength (UTS) of 2170 Mpa (315 ksi). It has a 2x7.5 km (1.10 mega-inch) strength-to-weight ratio (specific strength), which is higher than that of other alloys, including titanium, known for such high values. AerMet 310 alloy has a high figure of merit for toughness, compared ...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...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 …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 ...Bolt Material: Machined from Mag Particle Inspected Carpenter 158 or 9310 Steel. Barrel: 20" Stainless Steel - Fluted - Matte Finish - w. Sling Stud. Barrel Material: Precision 416R Stainless Steel. Chamber: Compass Lake Spec. with Matched Bolt. Rifling: 1 Turn in 8" - Right Hand Twist. Stock / Forend: Laminated Wood - Nutmeg.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 ...C158 is the mil-spec steel for the AR platforms rifles, 9310 is the mil-spec steel for other full auto rifles, and many other rifles the military uses. C158 is HARDER to heat treat correctly than 9310.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 ...Bearing & Gear Steel UNS# 9310 G93106 52100 G52986 ACUBE® 100 Carpenter 158 T51606 CBS-223 CBS-50 NiL K91231 M-50 T11350 CBS-600 K21940 Ferrium® C61 K93061 Ferrium® C64 K92731 L-6490 T11350 Nitralloy 135M K24065 Nitralloy N Pyrowear® 53 K71040 High Strength AerMet® 100 K92580 Aermet® 100 Plus AerMet® 310 AerMet® 340 35NCD16 300M K44220 ...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 …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!Stag Arms – Mil-Spec shot peened Carpenter 158 steel.440″ Bolt Face. 6.5 Grendel – Type 2 with .136″ Head Space; 7.62x39mm – Type 1 with .125″ Head Space ... Maxim Firearms – 9310 Steel Stag Arms – Material not listed Underground Tactical – 9310 AQ Steel.473″ Bolt Face.358 SCOCOM.375 SCOCOM; 450 Bushmaster.458 SOCOM.50 ...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.Firearm Discussion and Resources from AR-15, AK-47, Handguns and more! Buy, Sell, and Trade your Firearms and Gear.Carpenter 158 Vs. 9310. Printable View. Show 40 post(s) from this thread on one page ... Originally Posted by SilverBullet432. You could have a bolt machined from a unicorn's horn. It may be better then the no. 158 bolt, but, its not mil-spec. Thats not what the TDP calls for. ... Aermet 100 is one material that seems to be clearly better than ...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 …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.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.Carpenter 158, on the other hand, contains a high percentage of carbon, which makes it incredibly hard and strong. Additionally, Carpenter 158 has a higher tensile strength and yield strength than 8620 tool steel, which means it can handle heavier loads and higher stress. Another important factor to consider when comparing these two tool steels ...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. It's why it's used for components that require greater strength .... Definition: Carpenter 158 steel is a high-strength, allFirearm Discussion and Resources from AR- The bolt is expertly crafted from 158 carpenter steel, providing exceptional strength, and is finished with a durable Manganese Phosphate coating for added resilience. Each bolt carrier undergoes rigorous MPI (Magnetic Particle Inspection) to ensure flawless integrity, and they are individually test-fired, guaranteeing reliability and performance …ALLOY STEEL 9310 AMS 6265 VAR - UNS 93106. 9310 is low alloy steel containing nickel, chromium and molybdenum. It has high core hardness and high fatigue strength. This alloy is best machined in the normalized and tempered state. All of this makes 9310 excellent for aircraft parts. 9310 steel specializes in high core strength applications. c158 is carpenter 158 meaning only carpenter can supply the stoc In terms of properties, both 8620 and 4140 steel have excellent strength and wear resistance. However, what sets them apart is their hardness level and the amount of carbon they contain. 4140 steel is much harder than 8620 steel, making it a better choice for applications requiring high durability and resistance to wear and tear. On the other ...Caliber: .308 Winchester Barrel Material: 4150 Chrome Moly Vanadium 11595E Steel Action: Semi-Automatic, Gas Impingement System Rifling: 1 in 10" ... Bolt Material: Machined from Mag Particle Inspected Carpenter 158 or 9310 Steel Length: 39.5" Barrel: 18" Fluted Medium Profile. 9310 steel vs 158 carpenter. 9310 steel vs 158 carpenter. Posted on O...
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