Long black mark on brass?

L

Larry W.

Guest
What do long black marks mean on brass? Are they still usable? It has been since the early 1970s that I have done any shooting. I think that I tried to temper them in my oven.
 
I hope this is meant to be a joke? If so it's not funny IMO ...... "tempering brass in the oven" is borderline insanity.

"Thinking maybe I did it" ......... ?????

I don't know how to be polite here. :) Throw the brass away. If I were a Safety Inspector I'd insist you bash them all with a hammer first.
 
Seriously, flatten them all, and sell them for scrap or throw them away. Heating cases to too high a temperature can weaken their heads, and that can result in a catastrophic failure that could seriously injure the shooter and/or a bystander, and for goodness sakes don't try one to see what happens. Get rid of them. We are not kidding.:mad:
 
black marks on brass.

Thanks, I will throw them away. I was young and stupid back in the early 1970s.
 
Temper??

Most copper alloys, including brass, achieves it's strength level through cold working, in the case of Rifle Brass, in the drawing proccess.

At that point, it is as strong as it will ever be. You can soften it, and make it more ductile, by annealing it with heat.

Not sure what you mean by tempering, which is a proccess used in alloy steels, (and other ferrous based metals) to achieve a certain level of strength properties after hardenning.

Anyway, NEVER subject the back half portion of a case to any appreciable heat heat, as you would have done in an oven. That is where maximum strength is needed........jackie
 
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