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 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 ...Aug 8, 2020 ... The steel is further classified into different classes, but the most common ones for manufacturing BCGs are 9310 and Carpenter 158 Steel.Firearm Discussion and Resources from AR-15, AK-47, Handguns and more! Buy, Sell, and Trade your Firearms and Gear.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 ... Carpenter 158 came first & was adopted as the mil-spec steel for the bolt, and 9130 was developed later.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.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.comBrownells 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.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 …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?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.Slick and functional design. Properly staggered rings on the bolt. Easy installation. Exceptional performance with no malfunctions reported after firing around 100 rounds. Made with a high-quality Carpenter No. 158 steel bolt. Full Auto profile for reliable operation. Gas key features Grade 8 hardened fasteners, staked per MilSpec.Carpenter 158 is 9310 with case hardening. Forgot to mention that specifically. Reply reply TheRealSchifty • Carpenter 158 is 9310 with case hardening It's not, Carpenter 158 is a propitiatory steel alloy. It has similar (arguably superior) properties to …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!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?Bolt Material: Machined from Mag Particle Inspected Carpenter 158 or 9310 Steel. Barrel: 18" Fluted 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.Bolt Steel: Carpenter No. 158 Steel. Profile: Full Auto Profile. Gas Key: ... 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. Reviews . Q & A.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 ...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.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 ...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 ...A short while back, I was on the phone with a few Carpenter Steel engineers looking for info. The first data sheet that mentions C-158 (or Carpenter No. 158) came out in 1981. ... Both 158 and 9310 can be had in a VAC melt grade which is the purest form of both alloys. Both alloys have apx the same strength depending on the heat treat.Business, Economics, and Finance. GameStop Moderna Pfizer Johnson & Johnson AstraZeneca Walgreens Best Buy Novavax SpaceX Tesla. Crypto9310 vs 158 steel both have advantages and disadvantages that should be considered when deciding which type of steel to use. 9310 steel is stronger and harder, …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 ...Sep 6, 2023 · 9310 vs 158 steel both have advantages and disadvantages that should be considered when deciding which type of steel to use. 9310 steel is stronger and harder, making it ideal for applications where strength and durability are important.Carpenter 158 was originally developed as a dies steel and when carburized is best suited for application requiring high core strength and subjected to heavy shock and wear. Carburized 9310 is a very good steel when high core strength, toughness, fatigue, and wear properties are required. It's biggest use is in heavy duty gears and crankshafts.Bolt Material: Machined from Mag Particle Inspected Carpenter 158 or 9310 Steel. Barrel: 16" Medium 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.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 Specification with Matched Bolt.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 anBolt Carriers made from 8620 Steel, 6A1-4V Titanium or Aluminum; Keys made from 4130 Steel; Bolts available in 9310 Steel or Carpenter 158MSRP: $139.99. Price: $119.00. — You save $20.99. Quantity: Add to Wish List. Description. Additional Information. This bolt carrier is manufactured from case hardened 8620 steel with properly staked 4130 steel gas key. The accompanying bolt is Carpenter 158, shot peened, HPT and MPI tested, and finished in a self-lubricating polished black ...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 ...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.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 or Carpenter 158 (C158) Steel: Bolt Finish: Black Nitride: Caliber.223 | 5.56 NATO | 300 Blackout: Extractor O-ring: Viton; Mil Spec: Carrier Material: 8620 Steel, Toolcraft Proprietary: Carrier Finish: …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 ...Interior of Bolt Carrier Carrier Key & Bolt Carrier are chrome lined on the M16 Phosphate Bolt Carrier Group only. M16 Bolt Carrier will function in semi-auto or full-auto AR-15/M16. Gas Key Screws are properly torqued and staked. Bolt and Bolt Carrier feature a matte black mil-spec finish. SPECS: Bolt - Carpenter 158 steel, Magnetic Particle ...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 ...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?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 ...Quoted: As I understand it, Carpenter 158 is a case (surface) hardened steel where 8620 is through hardened. This would allow 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 being through hardened can either be softer ...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 ...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 30, 2018 ... - 9310 for the bolt (not carrier?) vs 158 carpenter - MPI bolt (don't think the carrier) - Forged lower (not billet) - the barrel (if the ...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.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?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 ...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?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 ... Carpenter 158 came first & was adopted as the mil-spec steel for the bolt, and 9130 was developed later.Carpenter 158 is 9310 with case hardening. Forgot to mention that specifically. Reply reply TheRealSchifty • Carpenter 158 is 9310 with case hardening It's not, Carpenter 158 is a propitiatory steel alloy. It has similar (arguably superior) properties to …The Sharps 308 Balanced Bolt Carrier Group Complete has the same innovative design as the Sharps 5.56 Balanced Bolt Carrier Group. The 308 carrier is precisely machined from case-hardened 8620 alloy steel. The 308 Relia-Bolt™ is made of robust 9310 nickel-chrome-moly alloy steel. The entire BCG is finished with DLC (Diamond Like Carbon) Coating.Apparently the 1b1b6 has a "158 Carpenter Steel bolt", opposed to a "AISI 9310 alloy steel" Bolt on the Nitrided one I'm looking at. Is one superior to the other, or a matter of preference? ... Bolts available in 9310 Steel or Carpenter 158. Obviously, Toolcraft will make whatever the customer wants. They might use different steels and do ...Subscribe to be notified when this product is back in stock. SKU: F4-15-BCG-NiB Categories: BCG, Parts. Description. Additional information. Reviews (1) Material: 9310 Steel Bolt (Carpenter 158), 4140 Billet Extractor, 8620 Steel Carrier (Full Auto) Features: Magnetic Particle Inspected (MPI) Bolt. Finish: Premium Nickel Boron Finish or Black ...The proprietary alloy used by LMT's enhanced bolt outclasses the industry standard of Carpenter 158 & 9310 Steel commonly used for bolts. The material and grooves cut into the locking lugs (to relieve stress) make a bolt that is built to last in a suppressed full auto system. BCG Coating/FinishesBolt Material : Carpenter 158+ Carrier Material : 8620 Steel Coating : Nanoweapon MPI & HPT : Yes Full-Auto Rated : Yes. My Take. This is the most expensive option on this list. However, if there was ever a piece of equipment to spend a little more money it is the BCG. The Geissele BCG is the best on the market in my opinion.Firearm Discussion and Resources from AR-15, AK-47, Handguns and more! Buy, Sell, and Trade your Firearms and Gear.Aug 8, 2020 ... The steel is further classified into different classes, but the most common ones for manufacturing BCGs are 9310 and Carpenter 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.This 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.Nov 14, 2013 · 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 ...Choose from either the very popular 9310 steel or the mil-spec 158 Carpenter steel. Both are modern ultra-high strength steels designed specifically for applications where high strength and durability are of paramount importance. ... 9310 or Carpenter 158 Steel: Bolt Finish: Nickel Boron: Caliber: 223/5.56/300 Blackout: Extractor O-ring: Viton ...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.Extractors are being made from these materials as an example. 440C and 17-4. These are stainless steels, and used in many parts sold as "stainless". 8620. This is case hardening steel, which is tough and as standalone responds little to heat treatment, but once case hardened, can be made into very tough, but on the surface very hard part.140-280. 1.20. Zr-0.0C1%Hf (Grade 21) Zircaloy 2 (Grade 32) Zircaloy 4 (Grade 34) Have a look at our machinability rating graph which without a doubt will make your decision a lot easier with its incredibly detailed information.You are comparing the cost of the raw material with the cost of the finished bolt. 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.On the hardenability of steel, 4140 heat treatment has good strength and good comprehensive mechanical properties, good manufacturability, high yield. The highest temperature is 427 degrees Celsius. 4140 strength, high hardenability, and good toughness, quenching deformation of small, high temperature creep rupture strength, and high.This - $58.95. $60.95 was 9310 steel AO Precision Premium Phosphate Bolt Carrier Group - 158 HPT/MPI This mil-spec bolt carrier group goes through rigorous quality control tests before it's made available for purchase, including high pressure testing and magnetic particle inspection.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- ...Premium 5.56 Nickel Boron BCG with Carpenter 158 Bolt - No Logo. Regular Price $159.99 Special Price $99.99. Details; SKU: 516446914: Model Number: 516446914: Brand: Palmetto State Armory: UPC: ... Bolt Steel: Milspec Carpenter No. 158 Bolt: Shot Peened Mag Particle Inspected: Yes. Features.Is steel still the best material for building? Learn about the pros and cons of using steel for building construction and engineering at HowStuffWorks. Advertisement Ever since the...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.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 .... Sep 24, 2020 · While most individuals wiAnother difference is the strength and toughness The main limitation of C158 steel bolts is that they are brittle and prone to cracking under high-speed and impact loads. Difference Between 9310 and C158 Steel Bolt Strengths and Limitations of Each Steel Type. 9310 steel sheets have excellent toughness and wear resistance but may need to perform better in high-temperature and … Sep 5, 2023 · September 5, 2023 | 4:33 pm. When choosing high 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. Manufactured to precise tolerances, these high-quality replacement p...
Continue Reading