anyone willing to test a Bolt Carrier

[elephant]

I'm having (5) bolt carriers manufactured using HY-100 steel. This is the same material US submarines are made from and are virtually indestructible and resistant to corrosion. The steel is certified MIL-S-21952 C/D and T9074-BD-GIB-010/0300 and rated at 100,000psi. You can read more about it here: https://en.wikipedia.org/wiki/HY-80. Our company manufactures replacement parts for the Ohio Class Submarines and I had some material left over, the material I have has been ultra sound, X-RAY, gamma irradiated and stress test.

Having said that, I am wanting to know if anyone would want to test these out for me. Possibly a few thousand rounds should provide enough feedback. Basically I'm wanting someone to try to destroy these bolt carriers through heavy firing, wet/humid conditions, carbon build up, different types of ammo etc. I don't know if there is a market for these considering these would probably cost around $400-$500 but perhaps last a lifetime. Anyways, let me know if you have interest or wanting more information.

[JulyAZ]

I’d be willing to test one out, unfortunately right now I can’t see myself putting a round count of that magnitude through it, maybe in a few months, I could but right now I wouldn’t be much help.

How are these being manufactured, will the carrier key be made of the same material? Is there even a carrier key, or is it just the stripped carrier?

Would a metal of that composite have any adverse effect on the aluminum receivers over use? I’m not a metallurgist, but have read a few books on alchemy :sarcasm:

[gaijin]

I could get some rds. through one for you.

[Airhasz]

No bolt, just carrier?

[MegademiC]

No bolt, just carrier?

It probably wouldnt work well since it has 75% of the yield strength as c158. Im assuming the numbers i found were both untempered, but neither was specified.

[GH41]

It probably wouldnt work well since it has 75% of the yield strength as c158. Im assuming the numbers i found were both untempered, but neither was specified.

I am no expert but it looks like HY-100 is used for pressure vessels, piping and hull plating on submarines. I couldn't find an example of it being used for bearing surfaces. I wonder if the OP has the ability to chrome the bore? I'd like to know how using HY-100 would offer an advantage over a conventional milspec carrier.

[EzGoingKev]

I don't know if there is a market for these considering these would probably cost around $400-$500 but perhaps last a lifetime.

With the exception of a rifle blowing up due to an ammo issue I have never seen someone break a bolt carrier.

If a $45 bolt carrier will last a lifetime IDK who would spend $400-500 on one.

[markm]

If a $45 bolt carrier will last a lifetime IDK who would spend $400-500 on one.

Yeah. $400 is a huge juice/squeeze gap to bridge. Even if a carrier lasted half a lifetime, just buy two, and you're still hundreds of dollars ahead.

[elephant]

HY-100 is lighter than 8620 carbon steel, Carpenter 158 and Super Duplex. I know that machining HY-100 is not easy, but doing some research and talking to our engineers, I have found that HY-100 is perfectly suitable for a bolt carrier. The reason is because HY-100 is used primary because it is resistant to corrosion, light weight and stronger than other bolt carriers on the market. It would cost me $400-500 to manufacture (5) total, not each.

I don't have the capabilities to manufacture the gas key, bolt, ejector, firing pin or anything else for that matter. I am just going to do a run on the bolt carrier itself and then buy the parts needed to build a complete BCG.

I also don't have the capabilities to chrome line the bore so I will most likely use Ceramax which is a coating that we invented and later sold to Rexroth, more info here:https://www.airlinehyd.com/literatur...%20Coating.PDF
its stronger than chrome, more heat resistant and self healing.

this is a drawing I did on AutoCAD Inventor
Attachment 50414

I have a drawing for the bolt itself, just too complex to manufacture.

[jsbhike]

Isn't lightening the bolt carrier generally considered a negative?