Nov 3, 2006 #1 emonje Mechanical Joined Nov 3, 2006 Messages 48 Location AU I've got to work with old drawing calling for "Si Mn st75" as material (steel, most probably) required. I have no idea what it is. Can please anyone help?
I've got to work with old drawing calling for "Si Mn st75" as material (steel, most probably) required. I have no idea what it is. Can please anyone help?
Nov 6, 2006 #2 rb1957 Aerospace Joined Apr 15, 2005 Messages 16,165 Location CA my guess is 7075 ... it used to be called 75ST, but the Si-Mn might mean 6061 Upvote 0 Downvote