I know "use a known Steel" and I usually do mainly 1084. But I recently recieved three Simonds Mill Bast files that belonged to my grandfather. He passed away in 1986. But my grandmother passed away last week, that is when I got the files. I would love to make a knife out of one of them to put in the auction at next years family reunion. I have been to Simonds website and didn't see anything about what kind of steel the files are made of. I was wandering if any of you guys had any experience with this particular file. I plan to anneal it and make a stock removal knife then heat treat, but would like to know if anyone has any experience heat treating one of these files. The knife will mainly hold sentimental value to the final owner and it will be made clear that that is its purpose. I thought it would be a great item for the auction and family funds at the reunion. Thanks