Back-Up Steel

I got a piece of 01 steel in the mail Tuesday.  It is my back-up steel.  Since I don't know the blade steel type on the blade that I "inherited" then I don't know whether to quench it in oil, water, or sand.  Believe it or not, it makes a huge difference.  If I choose the wrong quench, I will end up with a warped blade.  I don't like to take chances on someone elses project.  Hell.....I don't like to take chances on my own projects.  The only thing that I haven't backed up is the #5 saw blades that are used to cut steel with the jewelers saw.  I am going to trace the profile of this blade onto the new piece of steel, order 12 saw blades and hope I don't have to use them.