3 Attachment(s)
Identifying copper alloys
Hi everyone, I'm a new member.
About 7 years ago, I purchased some small copper sheets online. They are about 3/32" thick by 2" x 3". I've made a few things with them over the years.
I read about the dangers of process BeCu alloys and as a hobbyist, I was not aware of this metal. I have no way of contacting the seller at this point to find out what the alloy of copper I have could be.
I've been over on some other metal working forums asking this question. Looks like some of you may be in this forum as well, but I'm asking here to cast a wider net. :?
Is there a way to distinguish "normal" copper from BeCu alloys? The copper that I have is fairly hard to start with, but it can get very soft if hot quenched annealed. I'm attaching some pics of one of the sections with the blue film over it. The copper has patinaed a little bit, being that its 7 years in my possession at this point.
Thanks.
Attachment 389630Attachment 389629Attachment 389631