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.Firearm Discussion and Resources from AR-15, AK-47, Handguns and more! Buy, Sell, and Trade your Firearms and Gear.at some point, it is how many angels can dance on the head of a pin. 9310 is a standard. Carpenter 158 is proprietary alloy, and no real difference from 9310 in effective use of weaponry in a bolt. The difference between C-158 and 9310, I just don't see it. There is no evidence, let alone testing differences to the practical extent that it matters.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, ...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. 9310 is about half the cost of P-6. Which is better? Don't know, I barely made it through that class. IMO, the heat treat is probably more important than the alloy comp.Complete Black Nitride / Melonite Bolt Carrier Group. Smooth & Protective Nitride coating. M16 Carrier-8620 Bolt-9310 MPI & HPT Tested Shot Peened Upgraded ...For instance; PSA, Aero Precision - both DPMS pattern- offer receivers, barrels, BCG's on their websites. What if I want to get a 3rd party BCG because of different specs - carpenter 158 vs 9310 bolt. Then - I assume the AR10 BCG will not run in …The 9310 steel is another common material for bolts and carriers, but it’s cheaper and not as strong as the Carpenter 158. The tensile strength of 9310 steel comes in at 910 MPa, while its yield strength is 570 MPa. Finally, the 8620 steel is the cheapest option, and you can usually find it on the carrier, not the bolt. 9310 or Carpenter 158 Steel: Bolt Finish: Nickel Boron: Caliber: 223/5.56/300 Blackout: Extractor O-ring: Viton; Mil Spec: Carrier Material: 8620 Steel, Toolcraft Proprietary: Carrier Finish: Nickel Boron: Carrier Design: M16 Full Auto Style: Gas Key Material: 4130 Steel: Cam Pin Material: 4140 Steel: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 ... 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.For AR-10/LR-308 rifles Bolt is made from Carpenter 158 steel Carrier is made from 8620 steel ground to mil-spec Nitride finishOrder today! Key Specifications Item ... The 223 Bolt and Bolt Carrier Assembly is compatible with 5.56 and 300 Blackout. Enhanced 9310 Steel (Bolt) 8620 Tool Steel (Carrier) Mil-Spec Extractor Spring, black ...9310 Steel. This steel is more readily available than the Carpenter No. 158 and is used for both carrier and bolt manufacturing, but isn’t inferior in strength or durability. Less expensive, it helps influence quality parts at a more affordable price. Tensile Strength: 910 MPa; Yield Strength: 570 MPa; 8620 SteelBuild a list of your favorite alloys. Click the heart icon on any alloy to begin creating your account. Premium quality chromium-nickel-molybdenum carburizing steel produced by the vacuum consumable electrode process. It has high hardenability, high core hardness, and superior fatigue strength.Nov 14, 2013 · 11-14-13, 06:26 #1 eperk Member Join Date Aug 2012 Location Northeast MS. Posts 460 Feedback Score 0 Carpenter 158 Vs. 9310 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? 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. 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.For someone who wants become a carpenter, an associate’s degree or certificate to become employed in the profession is needed. Most carpenters need to learn and master basic carpentry skills through formal education and apprenticeships.Cryptic Coatings Mystic Black Titanium BCG. The bolt carrier is machined from Aircraft Quality 6A1-4V Titanium with a Carpenter 158 bolt with spring and ejector. Weight (complete BCG): 7.78 ounces. Carrier Material and Finish: 6AL-4V, proprietary CVD. Bolt Material and Testing: Carpenter 158, MPI & HPT. Price: $450.Can somebody tell me what the difference is between c-158 and 9310 and why 9310 isn't mil-spec? I've seen 9310 used in some bolts and wonder if it's actually inferior. Is there technical data to show that c-158 is …Firearm Discussion and Resources from AR-15, AK-47, Handguns and more! Buy, Sell, and Trade your Firearms and Gear.$ 185.00 $ 158.37 More Info. Sale! FREE SHIPPING ITEM! Ballistic Advantage 300 Blackout Performance Series 8.3 Hanson Barrel $ 210.00 $ 142.07 Add to cart. Sale! FREE SHIPPING ITEM! Ballistic Advantage 300 Blackout Performance Series 9 DRP Barrel $ 190.00 $ 134.81 More Info. Sale! FREE SHIPPING ITEM!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.This, c158 has to be purchased in massive quantities, while 9310 can be purchase in a quantity more reasonable for a small company. Can also hold up to the stress a bolt is put under as well as 158 with proper heat treating. View All Quotes. better actually however, the heat treating must be done right.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?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. …PSA Logoed Premium 5.56 Nickel Boron BCG with Carpenter 158 Bolt - 516446450 . Rating: 94%. Regular Price $199.99 Special Price $99.99. Add to Cart. Add to Wish ...In conclusion, 9310 and 158 steel have unique properties and characteristics that make them ideal for certain applications. 9310 steel is tougher and more impact-resistant, while 158 steel is more corrosion-resistant. When choosing between the two, it’s important to consider your project’s specific requirements and needs.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.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. Continued.... Several have made claims that AISI 9310 has problems. Maybe it does. But it is a fact that 9310 is the most frequently used steel alloy for aircraft gears.9310 ALLOY STEEL – AMS 6265 VAR – UNS93106 DATA SHEET GENERAL CHARACTERISTICS: 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 …Jan 16, 2021 · Been examining the differences between C158 and 9310 steel bolts for the AR platform, and now I'm more confused than before. 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 ... The bolt carrier is the housing of the entire BCG and contains ALL the other parts. This part is what contacts the buffer spring and absorbs the incredible force of expanded gas. The strength of this part is crucial for not only proper use, but safety, and is made from three types of forged steel: Carpenter no. 158, 8620, or 9310. Gas / Carrier KeyI’m aware that there are plenty of high quality 9310 steel bolts out there. I also know that it’s possible for high grade 9310 steel to be stronger than Carpenter 158 steel, if it’s heat treated properly. However, there are many suppliers of 9310 steel. And there’s some variation in the composition specifications for 9310 steel.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. It has become evident from the industry that a number of manufacturers have jumped upon the AISI 9310 wagon in order to claim better performance.C 158 vs 9310 Bolt. Just ordered a Aero Precision 6.5 bcg with bolt. 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.The 9310 steel is another common material for bolts and carriers, but it’s cheaper and not as strong as the Carpenter 158. The tensile strength of 9310 steel comes in at 910 MPa, while its yield strength is 570 MPa. Finally, the 8620 steel is the cheapest option, and you can usually find it on the carrier, not the bolt.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.Posted: 7/17/2014 3:12:39 PM EDT. Sharps' Relia-Bolt has significantly come down on its price since its unveiling around the first of the year due to now being only $79.99. Being an S7 tool steel bolt with a NP3 finish for a hair less than $80, I decided to order one to try out in my upcoming build. I ordered it early Monday Morning, it shipped ...Nov 16, 2017 · 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. 9310 is about half the cost of P-6. Which is better? Don't know, I barely made it through that class. IMO, the heat treat is probably more important than the alloy comp. 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. Technical Specification. Bolt: S7 Tool steel, …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.Carpenter 158 is a case (surface) hardened steel where 8620/9310 is through hardened. Case hardening allows 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. 8620/9310 being through hardened can either be softer and better at ...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.Posted on 1/16/21 at 2:25 pm. 1 0. Been examining the differences between C158 and 9310 steel bolts for the AR platform, and now I'm more confused than before. 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 ...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 …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 ...11-17-13, 07:36 #32 Palmguy Senior Member Join Date Oct 2007 Location NW Florida Posts 2,553 Feedback Score 42 (98%) Originally Posted by Iraqgunz C158 is around $10.33 per pound and it must be purchased in huge lots.The Relia-Bolt™ is machined from S7 tool steel and tempered with SRC’s proprietary heat-treating process, significantly increasing strength when compared to MilSpec Carpenter 158. S7 provides a 75% increase in tensile strength, and nearly 60% improvement in yield strength. Batch MPI and HPT testedFirearm Discussion and Resources from AR-15, AK-47, Handguns and more! Buy, Sell, and Trade your Firearms and Gear.Carpenters use math for measuring and cutting, for determining the amount of material and manpower required for a job and for determining the amount to bid for a particular job. Carpenters must understand addition, subtraction, multiplicati...Posted: 7/17/2014 3:12:39 PM EDT. Sharps' Relia-Bolt has significantly come down on its price since its unveiling around the first of the year due to now being only $79.99. Being an S7 tool steel bolt with a NP3 finish for a hair less than $80, I decided to order one to try out in my upcoming build. I ordered it early Monday Morning, it shipped ...The 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?)For each property being compared, the top bar is SAE-AISI 4140 steel and the bottom bar is SAE-AISI 9310 steel. SAE-AISI 4140 (SCM440, G41400) Cr-Mo Steel SAE-AISI 9310 (1.6657, G93106) Ni-Cr-Mo Steel. Metric Units US Customary Units. Mechanical Properties. Brinell Hardness: 200 to 310:May 29, 2022 · #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 …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.1.20. Zr-0.0C1%Hf (Grade 21) Zircaloy 2 (Grade 32) Zircaloy 4 (Grade 34) Spot Welding Equip. Thermodes (Hot-bars) ACF BONDING EQUIP. Machining. Have a look at our machinability rating graph which without a doubt will make your decision a lot easier with its incredibly detailed information.It’s MPI tested and otherwise mil-spec…except that the bolt is made of 9310 steel instead of Carpenter 158. The chances of that mattering for an average shooter that puts even a few thousand rounds downrange a year is super slim. In the back of your mind, you’ll know it’s not mil-spec…but it’s about half the price of the BCM.Aug 26, 2023 · Carpenter No. 158 Bolt Steel. This is Mil-Spec steel for bolt fabrication and offered case hardened steel to prevent cracking and surface wear. Tensile Strength: 1103 MPa; Yield Strength: 931 MPa; 9310 Steel. Similar to Carpenter No. 158 and is used for both carrier and bolt manufacturing, it is more widely available and is more affordable. 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. Survivalist. 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 that 158 was a proprietary from one company and that it is case hardened.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.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. 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. Technical Specification. Bolt: S7 Tool steel, …Fully treated, Carpenter 158 attains a core strength of approximately 160 ksi (1103 MPa) tensile strength with a yield point of about 135 ksi (931 MPa).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 6, 2014 · Carpenter 158 is a case (surface) hardened steel where 8620/9310 is through hardened. Case hardening allows 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. 8620/9310 being through hardened can either be softer and better at ... It’s MPI tested and otherwise mil-spec…except that the bolt is made of 9310 steel instead of Carpenter 158. The chances of that mattering for an average shooter that puts even a few thousand rounds downrange a year is super slim. In the back of your mind, you’ll know it’s not mil-spec…but it’s about half the price of the BCM.The Relia-Bolt™ is machined from S7 tool steel and tempered with SRC’s proprietary heat-treating process, significantly increasing strength when compared to MilSpec Carpenter 158. S7 provides a 75% increase in tensile strength, and nearly 60% improvement in yield strength.-See it at Sharps here. Low Plasticity Roller Ball Burnishing:BOLT CARRIER GROUPS ARE WHERE THE RUBBER MEETS THE ROADWhile most people will say that the BCG is the heart of your rifle, most people don’t know why or what3. 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 …M16 Nitride BCG | Full Auto Rated | Nitride Coating | 8620 Carrier | M16 Carrier | Tool 7 Steel Extractor | Viton O-Ring | 9310 Bolt.This, c158 has to be purchased in massive quantities, while 9310 can be purchase in a quantity more reasonable for a small company. Can also hold up to the stress a bolt is put under as well as 158 with proper heat treating. View All Quotes. better actually however, the heat treating must be done right.They are both excellent. 9310 has a small amount of molybdenum, 158 does not. 158 has a little more chrome than 9310. Otherwise they are almost identical. 9310 is more available. I use S-7 . A little more expensive, but easier to heat treat with little if any distortion. You can get 55 c scale with S-7 air quench.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.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. 9310 is about half the cost of P-6. Which is better? Don't know, I barely made it through that class. IMO, the heat treat is probably more important than the alloy comp.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 …Typically, the carrier itself is machined from 8620 or 9310 steel, with the bolt itself being Carpenter 158. The firing pin may be 8740 steel and chrome ...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 ... 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. Bolt Steel: Carpenter 158 Bolt Carrier Profile: Full-auto Charging Handle included: Yes Build Kit: PSA Classic EPT Lower Build Kit, Flat Dark Earth Overall Length: 24.5" Features. Barrel: 4150V Chrome-moly steel, chambered in 5.56 NATO, with a 1:7 twist, M4 barrel extension, nitride treated, and a mid-length gas system.Jun 26, 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 ... 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.The Insider Trading Activity of CARPENTER ROBERT J on Markets Insider. Indices Commodities Currencies StocksCarpenter ant infestations are indicated by piles of wood shavings, the presence of smooth holes in wood and the emergence of large, winged ants from the structure. Worker ants don’t have wings and aren’t necessarily a sign of an infestatio...Toggle navigation. www.battlecreekarmory.com. HOME; AR-15. UPPER ASSEMBLIES.300 BLKOUT; 5.56 /.223 WYLDECarpenter bees are a common nuisance for homeowners, causing damage to wooden structures and outdoor furniture. While hiring a professional exterminator is one option, building your own carpenter bee traps can be a cost-effective and enviro...Jul 25, 2013 · The truth is, the standard Mil-spec C-158 (Carpenter 158) bolt has a number of factors limiting its performance, not the least of which is that the life expectancy of such bolts is only about 6,000 rounds. In fact, standard bolts will start to show stress cracks on the locking lugs adjacent to the extractor cut after only 3,000 rounds. Looks like a $10 "premium" for the black nitrate over the phosphorus (both with Carpenter 158 bolts). Don't get me wrong - I'm not trying to "save" ten bucks. Tell me which of these are "better" and that's the one I'll get. Posted ... C158 and 9310, are in high load gears, often in helicopter transmissions, ...Toolcraft Logo'd Premium 5.56 Nickel Boron BCG with Carpenter 158 Bolt - 5165449729 . Rating: 93%. Regular Price $199.99 Special Price $99.99. Add to Cart. Add to Wish List Add to Compare. PSA Custom AR-15 Charging Handle Ambidextrous . Rating: 93%. $56.95. Add to Cart. Add to Wish List Add to ...I'm building an AR pistol and looking for ideas. I have a few parts and a lot of ideas but suggestions are welcome, thanks! When it comes to BCGs, I'l9310 has a better charpy rating which should help to keep the lugs from ripping off the body of the bolt. From what I understand is what is said above. 158 has to be bought in bulk to make it worth while and affordable. The 9310 is cheaper to buy in smaller quantities.Those pits rusted and cracked more until the bolt failed. There is a , Np. The firearmhistory had some great info. I suppose can 9310 be a better bolt material than C158, su, If fact, 9310 response to thin section quenching is better tha, M16 Nitride BCG | Full Auto Rated | Nitride Coating | 8620 C, Carpenter 158 was what was spec'd in the 1950', May 12, 2016 · It has been the "Mil-Spec" since. Since the creation of Carpenter 158, the metals, 9310 or Carpenter 158 Steel: Bolt Finish: Nickel Boron: Caliber:, SAE 9310 is even harder and with C158 are popular in to, Apr 29, 2017 · Carpenter has never made or even tested a single bolt,, Dec 10, 2013 · Wilson combat 9310 steel - on sale for $98.57. BCGs , Well, 9310 is actually around 7% stronger than Carpenter 158 and, Members. 550. LocationCalifornia. Posted July 20, 2014. , Mar 8, 2020 · Well, 9310 is actually around 7% stro, Mar 8, 2020 · Well, 9310 is actually around 7% stronger tha, Cabinet design software has become an essential tool for desig, Carpenter No. 158 Bolt Steel. Carpenter No. 158 steel is t, I bought a Carpenter steel bolt years ago from Fulton Amory more out, 9310 Steel. This is an excellent steel alloy with high core hardnes.