Quote Originally Posted by kilopi505 View Post
Is the SAF mentioned here the Sandvik company of Swedenicon? Or is it an acronym for something else?

Edit:

Is SAF No.7 this ? Sanicro 70 — Sandvik Materials Technology


...and I can't find SAF No. 1 because all the names are changed, I think.
You are dealing with a time period where there were no international material standards as such.
In addition, steel manufacturers closely guarded their alloying information as trade secrets.

You will not be able to directly cross reference a current material standard to an historic material without access to the historic materials alloy information.