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Heat Treat Steel?

After i pound a peice of metal into shape at a bright cherry to full orange color how exactly do i quench my steel and temper it? Right now when i quench my steel with a straight plunge into room temp water it doesnt become brittle??? I use old fence post material as a base steel. Can any1 give me a more accurate instruction. Thank you! P.S. I do clean off the galvanization before heating

flamesami7 years ago
clean off all galvinization before heating!!! if you don't, it will vaporize and poison you!
as for hardening, harden it like you described (to brittle) then temper it. There are several ways to temper it:
-put the hardened item in and oven between 300ºF and 500ºF for two hours, turn of oven and allow to cool.
-as Bryan Smith says: file or grind a shiny spot and reheat until the the oxidation of the shiny spot is blue for springs and knife blades. quench imediately.
Bryan Smith8 years ago
If my memory is correct, you need steel with a high carbon content to be able to temper it (such as auto leaf springs). You can harden mild steel somewhat by quenching it red hot. On high carbon steel, You quench it red hot to harden it. file or grind a shiny spot and reheat until the the oxidation of the shiny spot is blue for springs and knife blades. quench imediately. salt water quenches fast, oil quenches slow.
gcrdcn8 years ago
After you heat the metal red hot, as it starts to cool quench it when it goes from red to blue color.