How do you temper steel?

to avoid the high internal stresses caused by quenching and to get tempered Martensite that is less brittle

Yes. It is considered "Mild" Steel due to the low amount of carbon in the steel.

Steel handsaw, steel hacksaw and steel bandsaw blades are made from high speed steel. The most popular specification of steel used to produce these products is BS4659 BM2 commonly known as M2 high...

Stainless steel is steel. Assuming that you mean high carbon steel, and martensitic stainless and proper heat treatment, most of the martensitic steels would be harder with some exceptions.

I am an engineer... I can do ANYTHING with steel! I can build the framework for a sky-scraper with it, or I can make a bracket to hang your coat on. I can fold it to form a sword or I can weld it...