It's B20 bronze (80% copper, 20% tin).

Robert Zildjian explained it's not the formula that's the secret, but the process for manufacturing cymbals without cracking since B20 is so brittle.

I'd be shocked if they hadn't. Particularly, cymbal makers who have already mapped out the other parts of the process. In fact they may already be using the same or similar alloys. Consider that violins are all made from approximately the same materials.

It's a day's work in the right spectroscopy lab. A bit more difficult to figure out is how to turn the cast blank into a cymbal.

And, finding a place in a mature market.