Carpenter 158 vs 9310.
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3. Toolcraft LOGO’D Premium 5.56 Nickel Boron BCG W/ Carpenter 158 Bolt. Number 3 on this list of the best PSA BCGs is the Toolcraft Logo’d Premium 5.56 Nickel Boron BCG with Carpenter 158 Bolt. Now you may be saying to yourself, that this is a Toolcraft BCG not a PSA BCG, but here’s the deal, Toolcraft makes a lot of BCGs for …The above mentioned 8620 steel is also used by manufacturers to make bolts for certain rifle models. For instance, it was extensively used in World War II for the M1 Garand rifle. Actually, the original M16 rifles also used bolts made of 8620 steel, but the US military found that the bolts were wearing out after 40,000 - 50,000 shots, which is ...15/16" x 144" Stainless Steel Carpenter 158 GP. Weight: ~ 30.29 Lbs/pp. Price: $211/pp. THIS MATERIAL IS IMMEDIATELY AVAILABLE. *photo is not of actual material.May 13, 2013 · Those pits rusted and cracked more until the bolt failed. There is a long article on the internet somewhere..Google. 158 was chosen as a better material to replace 8620, 9310 was not around then, the standard has not been changed. Both 158 and 9310 can be had in a VAC melt grade which is the purest form of both alloys.
MPI = Magnetic Particle Inspected. Nitride is my choice over phosphate as it is an actual treatment and it's generally "slicker" and more corrosion resistant. Posted: 11/23/2017 3:40:51 PM EDT. [#2] Toolcraft does not make their own bolts. Just carriers. The bolts they use are top of the line. They offer 158 and 9310.
The above mentioned 8620 steel is also used by manufacturers to make bolts for certain rifle models. For instance, it was extensively used in World War II for the M1 Garand rifle. Actually, the original M16 rifles also used bolts made of 8620 steel, but the US military found that the bolts were wearing out after 40,000 - 50,000 shots, which is ...
Jan 1, 2020 · Carpenter 158 was what was spec'd in the 1950's when the rifle was made. One company in the world makes it, and it's Carpenter. Other metal alloys have come along since 1950-whatever that are definitely superior, I think 9310 is fine. So is polishing a radius on the cam pin hole in the bolt, which is where the cracks usually happen. Feb 15, 2020 · The difference is in the steel. Many manufacturers will state that properly heat treated 9310 is approximately 7-8% "stronger" than 158, but 9310 requires that it be heat treated properly to achieve that increase in strength. Carpenter 158 is mil-spec, but many companies nowadays are opting for "stronger" steels like 9310 and S7 which are both ... Firearm Discussion and Resources from AR-15, AK-47, Handguns and more! Buy, Sell, and Trade your Firearms and Gear.Bolt is made of 158 carpenter instead of the 9310 i notice most others are. Is the 158 going to hold up fine its a hunting rig for a buddy that probly wont see a lot of rounds. Im sure they wouldnt be selling it if it wasnt up to par, thanks again guys. grayfox. 03-31-2018, 01:01 PM.
Firearm Discussion and Resources from AR-15, AK-47, Handguns and more! Buy, Sell, and Trade your Firearms and Gear.
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, …
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. Here’s the information on both the DLC and NiB-X coatings. Technical Data on DLC Coating. …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.This Toolcraft Bolt is made of Mil-spec Carpenter 158 steel, shot peened, and mag particle inspected. Gas key is chrome lined, phosphate coated, and secured with grade 8 fasteners and staked per mil-spec. Full-auto bolt carrier is phosphate coated and chrome lined. Made in …The most common is Carpenter 158 or C-158 steel, and the second most popular is 9310 steel. BOLT MATERIALS: CARPENTER 158 Vs 9310-STEELĪnother place different manufacturers try to stand out is what kind of steel they choose for their bolts.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?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 ...
Well, 9310 is actually around 7% stronger than Carpenter 158 and is better than "mil-spec." faxonfirearms.com FWIW, Right To Bear has Toolcraft 9310 BCGs for $80.Complete Black Nitride / Melonite Bolt Carrier Group. Smooth & Protective Nitride coating. M16 Carrier-8620 Bolt-9310 MPI & HPT Tested Shot Peened Upgraded ...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 ...In a rifle bolt there are only two things we need to be concerned with: the physical properties of the steel (hardness, strength, elasticity, etc), and shape. The physical properties of Carpenter 158 and 9310 are similar, and as long as the finished product passes gauging. the shape is correct.This Toolcraft Bolt is made of Mil-spec Carpenter 158 steel, shot peened, and mag particle inspected. Gas key is chrome lined, phosphate coated, and secured with grade 8 fasteners and staked per mil-spec. Full-auto bolt carrier is phosphate coated and chrome lined. Made in …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.
AXIAL FATIGUE VS 9310 Maximum Stress Level (ksi) Nf, Cycles to Failure 200 180 160 140 100 120 80 1.E+04 1.E+05 1.E+06 1.E+07 1.E+08 AXIAL FATIGUE PROPERTY DATA Ferrium C61 9310 Kt = 1.0, R = 0.10 Shot peened 0.30 in. gage diameter LongitudinalCarrier made with 8620 Steel and bolt made from Carpenter 158 Steel which is USGI Spec. ... Nitride VS. Chrome Lined - Which is better? Connect with Us: © 2023 ...
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 ...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 …Tiger Rock 9mm Caliber AR Complete Upper Receiver (2) $439.95 (Save $19.96) $419.99. Tiger Rock AR-15 Bolt Carrier Group (BCG) Assembly with Tactical Charging Handle Assembly $139.99 (Save $10.00) $129.99. 3 models Tiger Rock AR-9mm Complete Pistol Buffer Tube Kit (1) As Low As (Save Up to 20%) $55.99.Wilson combat has a 9310 steel Bolt Carrier Group on sale for $98.57, which is something like $70 off regular price. The three main BCGs I am looking at right now: PSA premium 158 Carpenter - was on sale for $109 when I put my order in. Rainier Arms 158 Carpenter - on sale for $119. Wilson combat 9310 steel - on sale for $98.57.Carpenter 158. UNS T51606. SAVED SAVE TO FAVORITES. Alloy & Specialty Steel ... Please note that Carpenter Technology does not sell or share personal information ...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.
Nov 9, 2020 · 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...
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?
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 ... Enter 9310. This is an AISI standard grade of tool steel that, when properly heat-treated, is approximately 7% stronger than Carpenter 158. With heat treatment, ...[#1] This is a debated topic. 9310 is supposed to be harder and more durable if heat treated correctly. They get a bad rap because when they first hit the market there were a lot that were not heat treated correctly and failed C158 is the Mil spec standard with a long track record of reliability. It is usually the most desiredThe Carpenter 158 has to be purchased in 20,000 Lb lots and is roughly $5/Lb. So I was wondering if there was another type of material out there that had the same chemical properties as the Carpenter 158, but could be purchased in smaller quantities (i.e. 1000 Lbs?)#1 For when the gun store expert says, "If it ain't mil-spec, it ain't shit". The C158 specified for M16 bolts dates to the 60's. Technology has advanced a little since then. Why 9310 Steel in an AR-15 / M16 Bolt? Why is 9310 Steel the superior option for your AR-15/M16 Bolt?The most common is Carpenter 158 or C-158 steel, and the second most popular is 9310 steel. BOLT MATERIALS: CARPENTER 158 Vs 9310-STEELĪnother place different manufacturers try to stand out is what kind of steel they choose for their bolts.There are different grades of 9310. Vac Arc being the highest. More and more bolts are being made from it because of availability. 158 is controlled by Carpenter and you have minimum weight orders to meet or they will not sell to you. Some say 9310 has a slight advantage over 158, but looking at the chemical makeup, they are very similar.[#1] This is a debated topic. 9310 is supposed to be harder and more durable if heat treated correctly. They get a bad rap because when they first hit the market there were a lot that were not heat treated correctly and failed C158 is the Mil spec standard with a long track record of reliability. It is usually the most desired
This premium backup bolt is a 9310 MPI spare bolt that perfectly fits the M16 and AR15 carriers and has a black nitride finish that provides increased corrosion resistance, natural lubrication and improved strength. When comparing 9310 vs 158 bolts, 9310 steel bolts provide a more reliable and durable base metal.Jun 21, 2014 · The 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. SAA AR-15 .223/5.56 Bolt Assembly Carpenter 158 - MPI Tested. Replacement Assembled Bolt for the .223/5.56/300AAC caliber AR-15 (or new builds). Assembled, Phosphate finished AR15 Bolt. Completely assembled with standard bolt parts: Extractor assembly, Ejector assembly, Gas Rings. Works with any AR15 standard …Instagram:https://instagram. merchantcenter transit pass commyochsner.org login pageumhs clinical home pagesafe passage dcl Apr 28, 2017 · 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? Carpenter 158 Vs. 9310 - Page 11 onenote journal templatehunting clubs in ga looking for members W1 and silver steel fall into this same category. O1. This material has been at least historically been widely used for several parts, 1911 manual offers it for many uses, e.g firing pins. It is tougher than plain carbon steel, but easy to heat treat. 4140, 4150. Likely one of the most common alloys used.Thread: Carpenter 158 Vs. 9310. Thread Tools. Show Printable Version; 04-29-17, 14:46 #121. AR-556. View Profile View Forum Posts View Articles Member Join Date ... san joaquin valley college infozone Features a carrier made from Carpenter 158 Tool Steel, and an 8620 steel with an M16 cut bolt. High Quality. ... Steel is further classified according to availability as well as easily machined variants. 9310 and 8620 steel and the high core strength Carpenter 158 steel are the recommended material for military specification BCGs.PSA Freedom AR-15 Nitride Bolt Carrier Group With Carpenter 158 Bolt - 516446915 . Rating: 95%. Regular Price $129.99 Special Price $89.99. Add to Cart. Add to Wish List Add to Compare. PSA 20" Rifle-Length 6.5 Grendel 1/8 Stainless Steel Barrel & BCG Combo - …