Quote Originally Posted by katy View Post
I would suspect that they would make good knives, they're tough, they'll bend with a lot of force without breaking. Maybe someone that knows a lot about different steels will chime in w/more info.

Gotta go, Merry Christmas to all.
I am by no means an expert on all steel grades, and I am not a blade smith either. Just like gun smiths those guys are artisans.
While I have made a few blades over they years just as I have made parts for and repaired several firearms this does not qualify me as either.
That being said, a few things I do know about some of the various grades of steel is that not all jack handle/ lug wrenches are equal I've seen some that I wouldn't trust to make cotter pins out of and some that would probably bash in the skull of the Hulk or superman.
one thing to look for is if they are forged rather than just hot stamp formed. When finding them in salvage yards or flea markets look at the socket end if it looks like it has been deformed and has stretched on the lug nuts then it is probably just softer steel the larger diameter longer ones with a socket end that would fit on say the nuts of an older 1 ton truck it quite possibly could be S7 tool steel also known as Bearcat, supershock7, Arapaho, or other names. Pretty good for making things like chisels or punches but I wouldn't know about knives.