Quote Originally Posted by Bob Seijasicon View Post
The Boak memo is dated February 25, 1942.
Thanks much, Bob. Appreciate the quick reply.

Quote Originally Posted by bob seijas View Post
Your tools were more likely Amola steel that WRA also used because it was pushed on them as a substitute.
Most tool makers used the "National Emergency" (also called "War Department") steels that metallurgists at AISI, from industry, and the WPB created in collaboration with each other as a result of the WPB cutting chromium and molybdenum content at <0.6%. These were AISI 86XX, 87XX, and 92XX triple alloys that used <0.4% nickel, chrome, and molybdenum. (Some makers, most notably Herbrand, actually forged-in the AISI numbers on their wrenches. Others went with the more generic "Alloy" or no markings at alll.) Other mfgrs used manganese steels (AISI 13XX). And others just perfected carbon steels.

Quote Originally Posted by bob seijas View Post
Amola was developed by metallurgists at Chrysler and was being touted as something of a wonder metal. It was also a chrome/moly alloy but with different proportions. Chrysler made a lot of car springs out of it, even featured it in some magazine ads.
Do you have any technical references for Amola, Bob? I've been unable to find anything definitive that provides its chemical composition or AISI grade number. What is your source for identifying it as a chrome-moly steel? If it was indeed a chrome-moly, it had to be a low-chrome chrome-moly, which is AISI 4118, 4120, or 4121, which all had <0.6% chromium content. I have been unable to determine when those grades were created. If I can link them to Amola, that would be a big breakthrough for us, as Ford and Willys documentation both refers to "Chrome-Molybdenum" steel well into 1943, which has confused us, since we know that the WPB restricted high-grade Chrome-Moly (AISI 41XX) after January 1, 1942. Anything you could point me to that provided Amola's formula would be much appreciated, Bob.