Posted by John Cooper on December 29, 1999 at 15:33:39:
In Reply to: Re: Annealing -- can it be 'undone'? posted by Matt Walters on December 28, 1999 at 20:00:18:
Rapid quenching of brass will soften the metal the most. All non-ferris metals (silver, brass, copper, and gold) are annealed by heating to a cherry red then quenching. This is the opposite of ferris metals such as iron and steal which are hardened by quenching.