Description. HPT (High Pressure Batch Tested) and MPI (Magnetic Particle Inspected). Mil-Spec Carpenter 158® steel, shot peened for increased strength per Mil-Spec. HPT (High Pressure Batch Tested) and MPI (Magnetic Particle Inspected). Complete Mil-Spec Bolt includes: Mil-Spec Carpenter 158® steel bolt Shot Peened for Increased Strength per ...Both are 8620 Tool Steel (Carrier) and 9310 Steel (Bolt) and are in my budget. Anybody have experience with these and want to offer their pros, cons and recommendations between the two? ... Sionics Phosphate BCG. 158 Carpenter Bolt, meticulously assembled and spec'ed out. It'll be a smidge more than $130 ($150 - ish), but you may find them on ...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?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® Nickel Alloys. Inconel® 718 AMS 5662 ... 9310 VAR AMS 6265 alloy steel from Rockwell is a low alloy carburizing steel known for its hardenability and strength. 9310 VAR also possesses solid ductility, weldability, and machinability properties. Stock sizes: 1.000" to 12.000" diameter.The carrier is usually made of 8620 steel, but the bolt (which takes the brunt of pressure and such), I've seen made of 8620 steel, carpenter 158, and 9310 steel. The "mil-spec" is carpenter 158; some companies have claimed 9310 steel to be stronger or just as good, but less expensive. In stock at PSA right now are some quality BCG's for less ...Aermet 100 (Carpenter Technology Corporation), Ferrium C61 and Ferrium C64 (QuesTek Innovations, LLC)) after a preliminary evaluation of a larger material matrix that had consisted of, in addition, CCS42L, LESCO53, 32CDV13 and XD15NW ferrous alloys. Pyrowear 675 is a high strength stainless steel designed for gear application. Aermet 100 is anFirearm Discussion and Resources from AR-15, AK-47, Handguns and more! Buy, Sell, and Trade your Firearms and Gear.If you have a set of stainless utensils or even some gardening tools that are rusty, don't toss them. You can salvage them with just a bit of elbow grease. Advertisement Stainless ...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 …Bolt Material: Machined from Mag Particle Inspected Carpenter 158 or 9310 Steel. Barrel: 16" M4 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.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 ...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 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.Firearm Discussion and Resources from AR-15, AK-47, Handguns and more! Buy, Sell, and Trade your Firearms and Gear.The steel used is properly hardened, but I don't think it's technically Carpenter 158. However, at under $170, an HPT and MPI-tested BCG is a great value. You should know that many would say ..."C158 vs 9130 bolt material" "Carpenter 158 9130 m16 bolt" "C158 9130 superior bolt material" Something along those lines... Someone please help me find this document as I believe that it's important info for the AR community to know. There are so many 9130 vs C158 threads and this could be the document that ends all of the arguments.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. Stock: A2 Standard Stock.There are a couple of different popular bolt steels, notably 9310 and 158 Carpenter steel. Currently, MIL-SPEC steel based off Colt TDP is 158 Carpenter steel. The reason being is that it works, and it does it well. It is a strong, highly durable steel and is wear resistant. 9310 is harder on average, but harder doesn't always mean better.An alloy providing high hardness and strength combined with exceptional ductility and toughness.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.Carpenter 158 Vs. 9310; If this is your first visit, ... This thread is about 9310 vs 158! 04-29-17, 18:42 #128. AR-556. View Profile View Forum PostsFirearm 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.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.SRC bolt, S7 tool steel 12-08-2022, 03:32 AM. 6.5 Grendel Type 2 Bolt With 0.136 Bolt Face in DLC ... I'm not schooled in properties of S7 steel vs carpenter 158 or 8310 or whatever, nor whether doing the DLC coating - while it increases hardness, does it also increase brittleness under bcg operating environment, or what else does it do, ie, no ...Bolt Steel: 9310 Profile: Full Auto Profile Gas Key: Grade 8 Hardened Fasteners, Staked per MilSpec. Features. Upgrade your AR-15 with the PSA 5.56 Nitride MPI Full-Auto Bolt Carrier Group, engineered to deliver exceptional performance. The bolt undergoes meticulous Magnetic Particle Inspection (MPI), ensuring reliable quality and peace of mind.SAE-AISI 4130 Steel vs. SAE-AISI 9310 Steel. Both SAE-AISI 4130 steel and SAE-AISI 9310 steel are iron alloys. They have a very high 96% of their average alloy composition in common. There are 31 material properties with values for both materials. Properties with values for just one material (1, in this case) are not shown.9310 Alloy Steel (also known as AISI 9310 steel) is a low alloy steel composed primarily of nickel and chromium. It shows high hardenability, high core hardness and high fatigue strength. 9310 also possesses solid ductility, weldability, and machinability properties, and is an excellent metal for use in heavy-duty machinery, case hardened components, and gears.Abstract. CARPENTER NO. 158 ALLOY is a chromium-nickel carburizing steel ideally suited for jobs requiring an extra measure of core strength in sections up to 5 inches thick. Additionally, the steel develops high wear resistant case characteristics when carburized and hardened. This datasheet provides information on composition, physical properties, elasticity, and tensile properties. Filing ...Firearm Discussion and Resources from AR-15, AK-47, Handguns and more! Buy, Sell, and Trade your Firearms and Gear.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.Business, Economics, and Finance. GameStop Moderna Pfizer Johnson & Johnson AstraZeneca Walgreens Best Buy Novavax SpaceX Tesla. CryptoThe 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 ...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 ...Apr 29, 2017 · 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.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.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.[PARTS] Toolcraft Logo'd Carpenter 158 Nitride Full-Auto Bolt Carrier Group $69.99 + S/H . ... use 9310 steel for the bolts and I've not had a negative experience with them. I'm a believer in 9310 as any decent company should be spot checking the bolt hardness after heat treat to verify the process. ... [Magazine] Windham Steel 30rnd (9.99+free ...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.Business, Economics, and Finance. GameStop Moderna Pfizer Johnson & Johnson AstraZeneca Walgreens Best Buy Novavax SpaceX Tesla. CryptoSteel Dynamics News: This is the News-site for the company Steel Dynamics on Markets Insider Indices Commodities Currencies StocksUpdate: Some offers mentioned below are no longer available. View the current offers here. My first trip to Austin, Texas, the land of breakfast tacos... Update: Some offers...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 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 ...9310 or Carpenter 158 (C158) Steel: Bolt Finish: Black Nitride: Caliber.223 | 5.56 NATO | 300 Blackout: Extractor O-ring: Viton; Mil Spec: Carrier Material: ... Cam Pin Finish: Black Nitride: Firing Pin Material: 8740 Steel; Hard Chrome Plated: Manufacturer: Toolcraft . Note: Some dealers are selling Toolcraft BCGs that have been finished after ...Apr 29, 2017 · 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.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.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 with a carpenter 158 bolt with a full-auto profile, designed to be ...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. Posted: 1/1/2020 3:57:10 PM EDT [#18] As long as the bolt isn't 8620, the carrier is usually made from this but after Sandy Hook a lot of shady fly-by-night manufacturers ...Machining DataSheet for Steel 9310 (14NiCrMo134) Machining DataSheet for. Steel 9310 (14NiCrMo134) Steel 9310 Menu: Equivalent Standards. Chemical Composition. Cutting Speeds Recommendation. Recommended Carbide Grades. Cutting Edge Geometry.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?Business, Economics, and Finance. GameStop Moderna Pfizer Johnson & Johnson AstraZeneca Walgreens Best Buy Novavax SpaceX Tesla. CryptoThe carrier is usually made of 8620 steel, but the bolt (which takes the brunt of pressure and such), I've seen made of 8620 steel, carpenter 158, and 9310 steel. The "mil-spec" is carpenter 158; some companies have claimed 9310 steel to be stronger or just as good, but less expensive. In stock at PSA right now are some quality BCG's for less ...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 ...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 ...Can you use steel wool on hard anodized cookware? Visit TLC to learn whether you can use steel wool to clean hard-anodized cookware. Advertisement Hard-anodized cookware is made of...Brownells TiN Lightweight BCG. Their bolt uses 9310 steel, but again…it is likely never going to matter and is the standard for lightweight builds. It weighs in a little heavier than the Titanium counterparts at 8.2 ounces but is less than half the price. Brownells TiN Lightweight BCG, Rear.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 ...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?Apr 29, 2017 · Carpenter 158 Vs. 9310; If this is your first visit, ... This thread is about 9310 vs 158! 04-29-17, 18:42 #128. AR-556. View Profile View Forum PostsThread: 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 …Carpenter 158 and 9310 steel are the best materials for the bolt. And 8620 steel will work with the carrier, though it's not strong enough for the bolt. Quality Control/Preparation. The right quality inspections for the bolt are high pressure tested (HPT) and magnetic particle inspected (MPI). And it should be shot peened to ensure durability .... Order 9310 from Sullivan Steel today. Toggle navigation. HWilson combat 9310 steel - on sale for $98.57. BCGs are co Firearm Discussion and Resources from AR-15, AK-47, Handguns and more! Buy, Sell, and Trade your Firearms and Gear. Nov 15, 2013 · I doubt it takes anywhere near a Because of its high strength, 9310 steel is used to forge both the carrier and bolt in some BCGs. Carpenter No. 158 Bolt Steel. The bolt itself is subjected to the highest heat, pressure and friction when live rounds are fired. To accommodate this, the bolt itself is made from Carpenter No. 158 steel, the mil-spec alloy favored by the military.- 9310 Steel can likely be deemed a quality and acceptable alternative to Carpenter 158 as the average properties when Heat Treated properly are similar. -8620 Steel is a VERY poor choice as an alternate and will both prematurely wear due to lower hardness and will likely fail within a relatively short period due to the significantly lower ... Yes 158 is good. But there are reasons someone would want a bolt w...
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