Dec 12, 2023 · 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.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.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 ejectorC-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 and nickel.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 ...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?and AIS1 9310 Gear Steels J 4- Dennis P. Townsend and Erwin V. Zaretsky 1.. 5. ,, - NOVEMBER 1980 .> 4 . TECH LIBRARY KAFB. NY ... material was originally developed as a tool steel and designated H-12 tool steel. The H-12 steel was later modified by lowering the carbon content from 0.35 to 0.24 percent and designated Vasco X-2.9310 Steel bolt, M16-style bolt carrier group, MPI/HP tested; Gas key MIL-SPEC sealed, torqued and staked ... M16-style MIL-SPEC bolt carrier group and HPT/MPI-tested bolt made from Carpenter 158; Mid-length gas system with H buffer and pinned gas block ... this accuracy would start to suffer but given that the FN Guardian uses a fairly durable ...9310, and Carpenters 158, are two distinct different types of steels. Both made for different kinds of applications, and both with different properties. ... I recently talked with some Carpenter Steel engineers, the earliest mention (data sheets) that we could find with C-158 even listed was 1981.9310 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.Noveske's Enhanced 6mm ARC bolt info: Constructed from high-quality SAE 9310 steel sourced domestically, including complete traceability through Mill MTR's and heat treat certification. Materials and heat treat are meticulously controlled and verified. 9310 is a superior material to carpenter 158 for this use. DLC coated for exceptional ...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...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...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.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).Typically the AR15 community looks for C-158 which is a blend of steel from Carpenter. 9310 is also a Carpenter product, but the make up of the steel differs between the two. What I surmised was that 9310 should be a better bolt material as long as it is properly heat-treated. It is less brittle than C-158 and theoretically stronger as long as ...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.5.56 Bolt is machined from Carpenter 158 tool steel; Shot peened; HPT tested/MPI marked; Black o-ring insert on extractor ... Nickel Bolt Carrier Group: No Aero 'A' Logo; Machined from 8620 Tool Steel (Carrier) and 9310 Steel (Bolt) Carrier has forward assist serrations; Shrouded firing pin; Nickel Boron Coating inside and out (Bolt, Carrier ...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 …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?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. Its combination of high alloy and low carbon content can achieve high core ...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.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 ...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 …In contrast to this, LWD doesn't sell bulk steel, it sells products expected to perform beyond mil-spec requirements. 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.Nov 14, 2013 · By comparison AISI 9310 will on first inspection also make an adequate bolt material. It has several alloy elements that promote a better structure and in the correct heat treatment will provide a slightly higher toughness than Carpenter 158 which is benificial to the fatigue life.May 18, 2023 ... 300BO M16 Profile MPI Inspected Bolt Carrier Groups features a Black Nitride finish, 8620 Steel Bolt Carrier, 9310 Steel ... carpenter-158-bolt- ...So should I look for a bolt that's Carpenter 158 or 9310? Is there a preference? ... 9310 is approximately 7% stronger than C-158. 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 .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 years as it ...Nov 5, 2013 ... I discuss the steel differences between carpenter 158 and 9310 from the AR Performance Super bolt. A new manufacturer of a "high quality ...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 ...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?BCG 5.56 NATO / .223 Rem, 9310 Steel -or- Carpenter 158 Bolt, Deals, Sales and Coupons BCG 5.56 NATO / .223 Rem, 9310 Steel -or- Carpenter 158 Bolt, - Calguns.net HomeRaise your children like a gardener—not a carpenter. My oldest daughter turns 10 this month. I say this with disbelief, as I am under the mistaken impression that I am still new to...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.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.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 ...When you temper a low-alloy steel like 8620, 9310 or Carpenter 158 at 1,050 degrees Fahrenheit, you kill their strength. There is nothing to be gained by nitriding a bolt that has already been case-hardened. ... 9310 or Carpenter 158, and 1,000 other steels. S7 is an air-hardening steel, which means it can be cooled very slowly in air and still ...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 ...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 ...Toolcraft Logo'd Carpenter 158 Nitride Full-Auto Bolt Carrier Group . Rating: 98%. Regular Price $129.99 Special Price $79.99. Add to Cart. Add to Wish ... PSA 20" Rifle-Length 6.5 Grendel 1/8 Stainless Steel Barrel & BCG Combo - 5165448797 . Rating: 94%. Regular Price $289.99 Special Price $249.99. Add to Cart. Add ...Bolt Material: Machined from Mag Particle Inspected Carpenter 158 or 9310 Steel. Barrel: 16″ Superlight with Melonite QPQ Finish and A2 Flash Suppressor. Barrel Material: 4150 Chrome Moly Vanadium 11595E Steel with M4 Feed Ramps. Rifling: 1 in 9″ - Right Hand Twist.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, ... I use this company for my Carpenter 158 steels industrial metal sales it is moderatly priced and they ship quick give em a try ! T. truckeic Plastic. Joined Sep 12, 2017. Sep 3, 2019Firearm Discussion and Resources from AR-15, AK-47, Handguns and more! Buy, Sell, and Trade your Firearms and Gear.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 …The main difference between 9310 steel and 300M steel is their composition. 9310 steel contains higher levels of carbon and chromium, while 300M steel contains higher levels of molybdenum and vanadium. This difference in composition gives each type of steel different properties that make them suitable for different applications.SAVE TO FAVORITES. Premium quality chromium-nickel-molybdenum carburizing steel produced by the vacuum consumable electrode process. It has high hardenability, …Remember Me? What's New? Forum; FAQ; Forum ActionsNow 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 …Constructed from high-quality SAE 9310 steel sourced domestically, including complete traceability through Mill MTR’s and heat treat certification. Materials and heat treat are meticulously controlled and verified. 9310 is …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.Today, we’re talking about the most perfect cookware material on Earth: stainless steel. Before you smash that comment button, I want to make it clear that I’m not disparaging cast...Firearm Discussion and Resources from AR-15, AK-47, Handguns and more! Buy, Sell, and Trade your Firearms and Gear.9310 steel vs 158 carpenter. 9310 steel vs 158 carpenter. Posted on October 16, 2023 05:10:01 AM | Views: 628The heat treatment process must be more closely controlled with 9310, from what I've read. I'm pretty sure Aermet 100 is a better steel than Carpenter 158 or SAE 9310. It's also made by Carpenter Technology Corporation. The Aermet 100 is about 3 times more expensive than Carpenter 158, but doesn't have lot minimums.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 ...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 …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 ...steel $2/lb = $0.75 C158 $10/lb = $3.75 A100 $30/lb = $11.25 It looks like A100 is slightly more difficult to machine than 4340 at 38HRC. That would increase machining costs. I'd expect the rest of the costs ( heat treat, shot peening and coating) to be similar between the three.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 Share. Like. This is an older thread, you may not receive a response, and could be reviving an old thread. Please consider creating a new thread.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 …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 ...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% …If fact, 9310 response to thin section quenching is better that Carpenter 158. And, taking the leap between this statement:". . . 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 . . ." and this statement:Made in USA. Bolt is made of Mil-spec Carpenter 158 steel, Shot peened, High pressure tested and Mag Particle Inspected. Gas key is machined out of bar stock, chrome lined phosphate coated, and secured with grade 8 fasteners and staked per mil-spec. Bolt carrier is phosphated outside and chrome lined inside. Laser engraved with the PSA logo.Constructed from high-quality SAE 9310 steel sourced domestically, including complete traceability through Mill MTR's and heat treat certification. Materials and heat treat are meticulously controlled and verified. 9310 is a superior material to carpenter 158 for this use. DLC coated for exceptional surface hardness and lubrication, all while preserving a…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 ...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 ...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 ...The NBS .223/5.56 Black Nitride 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 ...In contrast to this, LWD doesn't sell bulk steel, it sells products expected to perform beyond mil-spec requirements. 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.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.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 ...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 ...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.The structural steel frame is a long-lasting, cost-effective, and ecologically-friendly construction method for low-rise, mid-rise, and high-rise Expert Advice On Improving Your Ho...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?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.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?Coefficient of Friction - Lower coefficient of friction compared to Nickel Boron (.15 vs .5-.8) 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.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?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 .... 4140 vs 9310. 4140 vs 9310 : what is the SRC bolt, S7 tool steel 12-08-2022, 03:32 AM. 6.5 Grendel Type 2 B For a free quote or To find out more about 9310 Alloy Steel, Call us on 714-632-0140. Contact Us. Friend Metals offer 9310 alloy bar with AMS 6265 specifications. Explore our forging options for high-quality alloys. Visit our website for more details.The NBS .223/5.56 Black Nitride 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 … Typically the AR15 community looks for C-158 which 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 ...The most common material for AR-15 bolts is Carpenter 158 steel or Mil-Spec 9310 steel due to their high durability and tolerance to heat. Other materials that are sometimes used include titanium, which offers reduced weight but can be prone to wear over time; as well as various coatings like nickel boron or chrome that offer improved ... Quoted: Hardness levels produced by gas, plasma...
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