The decision depends largely on the specific requirements of your application. For applications that require excellent toughness, wear resistance, and uniform hardness, 9310 steel bolts are a great option. For applications that require high strength, durability, and resistance to thermal shocks, C158 bolts are the ideal choice.The firearmhistory had some great info. I suppose can 9310 be a better bolt material than C158, sure but it has to be heat treated properly in order to do so, and the improvement is less than 8%. So, as always, better make sure you're buying from a reputable manufacturer. I wouldn't pursue a 9310 bolt simply for the sake of having one made out ...Sep 24, 2020 · 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 ...Carpenter 158; The Faxon Blog and Podcast. Posted by Faxon Firearms Staff on May 12th 2016. Why 9310 Steel in an AR-15 / M16 Bolt? "9310 is not MIL-SPEC, it's better than MIL-SPEC" Last week Faxon announced the release of their GUNNER series of Modern Sporting Rifle bolt carrier groups. Its been a pleasure working on the car …This is our standard Nickel Boron Coated Bolt Carrier Group for the 5.56./.223 caliber. We use a 9310 Vac-Arc steel Bolt over the Mil-Spec Carpenter 158 Bolt because it's stronger and after many test firings and torture tests we've found it to not only last longer but to be more durable. The Nickel Boron coating has a Rockwell hardness between ...Carpenter 158 is just ANSI P6 steel. Perhaps look for a P6 supplier instead? ... IIRC, the original specifications for the GI issue model were for AQ-9310 (aircraft quality). The bolts were supposed to be good for 75K rounds, but most showed signs of cracking after 50-60K. I think that heat treat was changed to nitriding, but the numbers never ...Great discussions are par for the course here on Lifehacker. Each day, we highlight a discussion that is particularly helpful or insightful, along with other great discussions and ...8740 steel firing pin with hard chrome finish. Magnetic particle inspected. Proudly made in the U.S.A. 6.5 Grendel Nitride Bolt Carrier Group (Type II) BCG Nitride 6.5 Grendel (Type II) Bolt Carrier Group (BCG) Product Specs: 6.5 Grendel Salt bath nitride finish M16 cut 9310 steel carrier Carpenter 158 steel bolt 4140 steel extractor MIL-SPEC O-ri.Definition: Carpenter 158 steel is a high-strength, alloy steel specifically designed for use in critical firearm components such as bolt carriers, bolts, and barrels. Composition: It is primarily composed of iron, carbon, chromium, molybdenum, vanadium, and other alloying elements.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 ...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 …Firearm Discussion and Resources from AR-15, AK-47, Handguns and more! Buy, Sell, and Trade your Firearms and Gear.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 BrownellsToughness 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.Why 9310 instead of Mil-Spec Carpenter 158 steel? Simple, 9310 is an AISI standard grade tool steel which, when properly treated, actually makes it about 7 ...Another thing to consider is the pinion tooth count. The 6.00 ratio has a 6 tooth pinion. If you step up to a 6.14, you will have a 7 tooth pinion shaft. We have been running a 5.83 AX gear in our truck with 37" MTR's and 475 hp and the truck weighs about 4500lbs and it has about 1000 miles on the R&P with zero problems.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 ...Alloy 9310 in bar SPECIFICATIONS: GRADE ALLOY 9310, AISI 9310, UNS G93106 Castle Metals distributes a wide range of Alloy 9310 in bar from our distribution centers in the U.S., Canada, Mexico, Shanghai, Singapore, France, and the U.K. When customers confer with us on 9310, sometimes they share their challenges with inventory accuracy. Should we decide that custom bar codes could simplify the ...What Is the Difference Between 9310 Steel and Carpenter 158 Steel? 9310 steel and Carpenter 158 steel differ in their composition and intended applications. 9310 steel is a nickel-chromium-molybdenum alloy steel containing carbon, manganese, silicon, chromium, nickel, and molybdenum. It is known for its strength, toughness, and wear resistance ...Sep 6, 2023 ... 9310 Tool Steel is known to be brittle at room temperature, while Carpenter Steel has a lower resistance to corrosion and oxidation. If cost is ...9310 is only slightly (7%?) harder because it is a more modern alloy that is heat treated and case hardened. However if the treatment isn't done correctly, 9310 is worse than C158. Heat treatment on 9310 is critical to its function, so it is very important who makes the 9310 bolt.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.Description. FULL AUTO RATED M16 / AR15 NITRIDE BCG ( Check it out ) BCG Includes: High Pressure Tested (HPT) Magnetic Particle Inspected (MPI) Carrier machined from 8620 alloy, full auto profile, heat treated, Nitrided. Gas Key machined from 4130 chromoly steel alloy, heat treated and Nitrided. Bolt precision machined from 9310 alloy ...Details. ToolCraft AR-15 6.8SPC II BCG made for Palmetto State Armory OEM use. Functions with all 6.8 SPC II & 224 Valkyrie uppers. Includes a 9310 steel bolt assembly which is nitride treated for durability. BCG has an 8620 carrier, nitride treated, with a nitride treated gas key properly staked with grade 8 fasteners.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 is a case (surface) hardened steel where 8620/9310 is through hardened. Case hardening allows C-158 to be very hard on the outside to prevent wear and crack formation while the inside is softer and more flexible to prevent crack propagation and absorb shock loads. 8620/9310 being through hardened can either be softer and better at ...Great discussions are par for the course here on Lifehacker. Each day, we highlight a discussion that is particularly helpful or insightful, along with other great discussions and ...Posted by u/wormraper - 98 votes and 28 commentsWhy 9310 Steel in an AR-15 / M16 Bolt? Why is 9310 Steel the superior option for your AR-15/M16 Bolt? Well, 9310 is actually around 7% stronger than Carpenter 158 and is better than "mil-spec." faxonfirearms.com. 9.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 Aircraft Grade Steel • Extractor: Shot Peened and Case Hardened D2 Tool Steel • Firing Pin: Mil-spec 8740 steel with ...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.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 …Manufacturer: Palmetto State ArmoryCaliber: 5.56/.223Bolt Finish: NitrideBolt Steel: Carpenter No. 158 SteelProfile: Full Auto ProfileGas Key: Grade 8 Hardened Fasteners, Staked per MilSpec ** These Bolt Carrier Groups will have cosmetic blemishes that do not affect function. This may include but is not limited to, forging marks under the finish, scratches, and slight variations in the finish ...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% …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 ...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?Firearm Discussion and Resources from AR-15, AK-47, Handguns and more! Buy, Sell, and Trade your Firearms and Gear.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.Why 9310 Steel in an AR-15 / M16 Bolt? Why is 9310 Steel the superior option for your AR-15/M16 Bolt? Well, 9310 is actually around 7% stronger than Carpenter 158 and is better than "mil-spec." faxonfirearms.com. 9.Firearm Discussion and Resources from AR-15, AK-47, Handguns and more! Buy, Sell, and Trade your Firearms and Gear.Various grades of steel make up the most common AR-15 bolt carrier groups. 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-plated for longevity. The gas key itself may be 4140 steel.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 compound throat was causing issues to where the bullet would get stuck in the lands and grooves. Included is a matched bolt made from 9310AQ. Being Aircraft Quality 9310, it is free from any impurities, making it stronger than standard 9310 steel and much stronger than the mil-spec carpenter 158 steel.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.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 ...Nov 15, 2023 ... ... 9310 Steel. Carpenter 158 is available for an additional charge.  Finish: All Bolt components Shot Peened and Manganese Phosphate or ...Firearm Discussion and Resources from AR-15, AK-47, Handguns and more! Buy, Sell, and Trade your Firearms and Gear.Firearm Discussion and Resources from AR-15, AK-47, Handguns and more! Buy, Sell, and Trade your Firearms and Gear.Carpenter 158 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 …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?This is significantly stronger than the Carpenter 158 steel called out by the military and vastly superior to many materials used in civilian bolt production. What is S7 Tool Steel? a. The S-Type tool steel is specifically designed to resist the effects of shock at both high and low temperatures. What happens if I break your Relia-Bolt? a.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 ...LocationCalifornia. Posted July 20, 2014. I have been partial to the Carpenter 158 material for bolts but, there are quite a few available in 9310. I know 9310 alloy steel is very strong (they make differential ring and pinion gears for professional class drag racing cars. from it!) but on the M16/M4 the mil-spec is C158 - what is the preferred ...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.8620 Steel carrier; Carpenter 158 steel bolt; 9310 steel extractor and cam pin; Compatible with 5.56, .223, and .300 BLK; Every component of this Nitride bolt carrier group needs to be made from materials suited for its role. The carrier needs to withstand high amounts of friction, so it was made from 8620 steel because it is more easily ...Stainless 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...Firearm Discussion and Resources from AR-15, AK-47, Handguns and more! Buy, Sell, and Trade your Firearms and Gear.Members. 550. LocationCalifornia. Posted July 20, 2014. I have been partial to the Carpenter 158 material for bolts but, there are quite a few available in 9310. I know 9310 alloy steel is very strong (they make differential ring and pinion gears for professional class drag racing cars. from it!) but on the M16/M4 the mil-spec is C158 - what is ...Quoted: Hardness levels produced by gas, plasma, or Liquid Nitriding are similar, ranging from between 600-1200 HV (60-70+ HRC), hard chrome plating is around 70 HRC. It boils down to personal preference. Nitrided is definitely easier to clean, but a parked BCG is far from difficult to clean. View Quote.We 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.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.Is it made from 9310 steel like the Maxim Arms bolt? I wonder what kind of pressure these can take. Everyone throws around the 53K figure for max Grendel presure but thats the max presure of a 5.56 bolt made from 158 carpenter steel not a Grendel bolt made from 9310 steel which has never been rated.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.Mar 26, 2015 · 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.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.Better Bolt metal 9310 Steel or Carpenter 158 AR15 COM. The market demands 4150 because it is believes to be so much better than 4140 when in actuality they are nearly identical C 158 is simply Carpenters trade name for P 6 tool steel P 6 and 9310 are very close in composition The 9310 has some molybedenum while the P 6 has more chrome …If 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 ...Why 9310 instead of Mil-Spec Carpenter 158 steel? Simple, 9310 is an AISI standard grade tool steel which, when properly treated, actually makes it about 7 ...Sep 6, 2023 · While 9310 Tool Steel and Carpenter Steel have exceptional properties, they also have weaknesses. 9310 Tool Steel is known to be brittle at room temperature, while Carpenter Steel has a lower resistance to corrosion and oxidation. If cost is a major consideration for your project, Carpenter Steel may be a more affordable option.9310 Steel. Often called 19130, this is the most common metal for a bolt. It is a nickel-chrome-molybdenum case-hardened steel, and it’s harder than Carpenter 158. These are the cheapest BCGs. The problem is so many companies advertise 9310 bolts, and you only find out it isn’t 9130 when it breaks.While the Nickel Boron on the 9310 steel bolt was chosen for being easy to clean, having a low coefficient of friction, AND with the benefit of heat dissipation. ... Carpenter 158 steel bolt; Chrome-lined interior bolt carrier key and bolt carrier; Torqued and staked gas key screws; Coated with a matte black mil-spec finish;Firearm Discussion and Resources from AR-15, AK-47, Handguns and more! Buy, Sell, and Trade your Firearms and Gear.Nitriding 9310 at 900-1,050 degrees F knocks about 20% off the core strength. I mention that because it doesn't look like Faxon offers a bolt that is NOT nitrided. Im also kind of skeptical that 9310 is consistently 7% stronger than Carpenter 158, or that it really matters much even if it is.. Carpenter 158 Vs. 9310; If this is your first visit, Find here carpenter 158 steel materials, C-158 forging, roll Jan 6, 2014. #2. It's my understanding that the 158 is mil spec for the bolt, 8620 is spec for the carrier and 9310 is less than 10% harder than the 158. I think I've read somewhere … 8740 steel firing pin with hard chrome finish. Magnetic parti The high alloy content in 9310 allows for heavy sections to be treated to result in high case hardness and high core strength and toughness. This material is useful without carburizing, yet carburizing produces a highly wear-resistant case. The material is vacuum degassed and is also available in consumable electrode vacuum remelting process.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 … The Relia-Bolt™ is machined from S7 tool ...
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