breech plug alloy?

[ron ward]

anyone know the alloy of a typical breech plug?

 

[Zonie]

If I had to guess it would be something like ASTM A27-81 Grade 60-30, a low carbon, carbon steel with a Tensile strength of around 63 KSI, Yield strength of 35KSI and Elongation of 30%.

Breech plugs don't have to be stronger than the material barrels are usually made from and this material matches up pretty good.

 

[ohio ramrod]

I don't know about commerical ones but I make mine out of 8620, or 12L14. Simply because I had access to a lot of bar ends at 8 cents a lb.

 

[Zonie]

Now that I pull my head out and re-read the original post I will have to add 12L14, 1018 or 1020.

For some reason I was thinking about castings when I made my first response so I mentioned a cast material.

 

[Stophel]

I imagine that they just make them from 12L14, just like the barrels, but they could be plain mild steel too.

 

[ron ward]

thanks guys,
i was hoping/thinking they were probably something like 1018. i have a peice of that.

 

[ohio ramrod]

1018 will work just fine.