It is 154CM.
I got a couple smaller odd size "drop" sheets in .127-.132" thick. It was shirttailed in with another order of 2'x3' sheets.

I am not a forger, but I think that anything is forgeable. Ed Fowler forges 52100 and gets a much tighter grain structure. I guess the question is can you master the heat treat process after you have forged it. I think all forgers do their own heat treat don't they????

The CPM process improves the grain stucture also by using smaller and more uniform size particles--so the mfr says.

Tim

"The significant problems we face cannot be solved at the same level of thinking we were at when we created them."
Albert Einstein

At Khe Sanh a sign read "For those who fight for it, life has a flavor the protected never knew".