PSA built this rifle to be as simplistic as possible with features like the forward assist to help with malfunctions and reloads and a dust cover to prevent dirt, carbon, grass, and precipitation. The bolt-carrier group is built to operate in full-auto (depending on state & federal laws) and made with a Carpenter 158 steel bolt.Bolt Material: Machined from Mag Particle Inspected Carpenter 158 or 9310 Steel. Barrel: 16″ Chrome Lined with Yankee Hill Flash Suppressor. Barrel Material: 4150 Chrome Moly Vanadium 11595E Steel ... Barrel Material: 4150 Chrome Moly Vanadium 11595E Steel. Rifling: 1 in 10″ - Right Hand Twist. Stock: Magpul CTR Carbine Stock with Magpul ...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.AERMET® 100 AMS 6532. AerMet® 100 is an iron, cobalt and nickel enriched martensitic steel featuring ultra-high strength, exceptional hardness, and ductility properties. It is very well suited for applications which require both load-bearing capability and ballistic tolerance. With a superior stress corrosion cracking and fracture resistance ...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: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.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 ...For material, Carpenter 158/C-158 is great and practically a standard. 9310 is a bit better (~5% harder than c-158 iirc), but apparently it is harder to do correctly because it has a narrower production temperature. ... Personally I prefer Carpenter 158 steel, but 9310 is probably fine too. All mine happen to be PSA Premium, but I would not ...Firearm Discussion and Resources from AR-15, AK-47, Handguns and more! Buy, Sell, and Trade your Firearms and Gear.All Toolcraft BCG bolts are shot-peened, MPI and batch HPT to ensure quality and reliability. Made from either mil-spec Carpenter 158 steel or high strength 9310 steel, bolt carrier groups from Toolcraft are guaranteed to perform like new for thousands and thousands of rounds. You cannot buy a better bolt carrier group than a Toolcraft.Machined from S7 tool steel and tempered provides the superior strength when compared to MilSpec Carpenter 158. S7 provides a 75% increase in tensile strength, and nearly 60% improvement in yield strength. Rockwell Hardness HRC of 46 provides a 15% increase in hardness at the same toughness comparing to either Carpenter 158 & 9310.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 …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?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.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 …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.The Insider Trading Activity of CARPENTER ROBERT J on Markets Insider. Indices Commodities Currencies StocksCarpenter 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.The Bolt is machined from Carpenter 158 or 9310, shot peened and hard turned as per the military spec. Each BCG is further fitted with a Lantac CP-R360 domed head cam pin, which are precision machined from 17-4PH stainless steel, hand polished and hardened to H900 condition, this further reduces friction and wear within the upper receiver.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 HomeThis BCG features a C158 bolt, 4340 extractors, and an S7 tool steel ejector. The gas key is made out of 4130 steel, is chrome lined as it should be, and includes enhanced Sprinco extractor springs, a sealed gas key, and properly staked gas key screws. The carrier is made out of 8620 steel and has a phosphate finish with a chrome-lined bore.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 ..."Straw man arguments" are utilized in debates to undermine the opposition. If you want to take the high road–and debate more effectively in the process–utilize the "steel man" argu...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 ...One of the main differences between these two materials is their composition. S7 tool steel contains higher carbon and chromium levels, with higher hardness and wear resistance. 9310, however, has a lower carbon content but contains nickel, which gives it higher toughness and fatigue strength.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 and nickel.Feb 11, 2017 · 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?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 ...The most common steel used in the bolt is Carpenter 158 steel. Some manufactures are using 9310 steel. Which is better? It depends who you ask, but most will agree that the difference in steel is small, and both varieties of steel work just fine. Many manufacturers also "shot peen" their bolts. This is a process that essentially makes the ...The Carpenter 158 Bolt is heat treated, shot peened, precision ground for perfect dimensions, and MPI Tested. The 4140 Billet Gas Key is properly torqued with Grade 8 fasteners, and properly staked to ensure reliability. The 4140 Billet Cam Pin is nitride treated for wear resistance. ... 9310 Steel: Carrier Material: 8620 Steel: Country of ...Bolts are most usually made from Carpenter 158 steel, but 9310 is considered the premium material because it has a higher tensile strength. Bolts are heat-treated, and, that's a process that needs to be done correctly. We should be getting correct when we spend up for a higher-dollar part.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.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 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 ...The thermal properties of AISI E9310 alloy steel are listed in the following table. Properties. Metric. Imperial. Thermal expansion co-efficient (@ 20°C/68°F, estimated) 11.5 µm/m°C. 6.39 µin/in°F. Thermal conductivity (typical steel) 51.9 W/mK.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 ...Rockwell Industries is a specialty steel distributor of stainless steels, nickel alloys, cobalt alloys, alloy steels, titanium and aluminum. ... Featured Inventory. Alloy Steels. 9310 VAR AMS 6265; 4340 VAR AMS 6414; Aermet® 100 AMS 6532; Pyrowear® 53 AMS 6308; Nitriding® 135M VAR AMS 6471; CBS-50 NiL® AMS 6278; Carpenter 158 ...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 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...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 ... Carpenter Acube® 100, Custom Age 625 Plus®, Custom Age 725®, Free-Cut Invar "36"®, High Permeability "49"®, HyMu "80"®, Invar "36"®, and Low Expansion "42"®, ...This alloy is considered to be a benchmark alloy because it has a superior combination of strength and fracture toughness for a structural steel. As shown in Table 1, Cartech AerMet 100 alloy has been averaging 246 ksi yield strength, 287 ksi ultimate tensile strength, and 16.1% elongation with a fracture toughness of 120 ksi√in. CVN impact ...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 …Jul 7, 2023 · The alloying elements in 9310 steel make its material composition and behavior more complex. This can affect material selection, processing, and quality control, requiring specialized knowledge and expertise to ensure consistent and reliable performance. What Is the Difference Between 9310 Steel and Carpenter 158 Steel?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 most common steel used in the bolt is Carpenter 158 steel. Some manufactures are using 9310 steel. Which is better? It depends who you ask, but most will agree that the difference in steel is small, and both varieties of steel work just fine. Many manufacturers also "shot peen" their bolts. This is a process that essentially makes the ...Firearm Discussion and Resources from AR-15, AK-47, Handguns and more! Buy, Sell, and Trade your Firearms and Gear.Alloy Steel 9310 specializes in high core strength applications. 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.This BCG weighs a mere 7.9 ounces, but is full-auto ready and functions with 5.56, .223, .300 BLK, and .200 Ruger rounds. The carrier itself is machined from 6A1-4V titanium, while the bolt is sturdy 9310 tool steel. The entire assembly is coated with a diamond-like coating (DLC) for an extra rugged finish.Another difference is the strength and toughness levels of the alloys. 8620 and 9310 have good toughness, which means they can withstand high-stress levels without breaking. However, the tensile strength of 9310 steel is significantly higher than that of 8620 steel. This makes 9310 steel ideal for parts requiring strength and durability.Bolt Material: Machined from Mag Particle Inspected Carpenter 158 or 9310 Steel. Barrel: 16" Heavy 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.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.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 ...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 ...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.ASTM A646 (9310-2) SAE J1397 (9310) SAE J404 (9310) AISI E9310 Uses. One of the main applications of AISI E9310 is manufacturing aircraft components, including gears, shafts, and bolts. The alloy is also used in high-stress applications, such as heavy-duty machinery, oil and gas drilling equipment, and racing engines.4140 vs 9310. 4140 vs 9310 : what is the difference between 4140 steel and 8620 steel? A： Today we are still discussing 4140 steel. As we know that 4140 steel belongs to the alloy structural steel. ... B：9310 steel can be used in some applications without case-hardening, as it exhibits strength with excellent toughness and ductility. A ...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.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...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 TreatmentThis 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.. The steel is then tempered at a lower temperature to improsemi_cop. I think 9310 has more molybdenum and C-158 and P-6 I give up - does anyone have the means to use a Webcrawler to download the entire database, and then mass search all of the PDFs offline for 158/9310? 07-16-14, 09:05 Heavy Metal The steel is then tempered at a lower temperature Firearm Discussion and Resources from AR-15, AK-47, Handguns and more! Buy, Sell, and Trade your Firearms and Gear. The proprietary alloy used by LMT's enhanced bo...
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