July 9, 20187 yr Ok so, im curious, if after hardening you temper for two straight hours at 400°F would it be harder or softer then if you did two one hour cycles (letting cool completely inbetween) at 400°F? I dont feel like the alloy matters but this was a 1095 farriers rasp. Thanks in advance!
July 10, 20187 yr NOT!!! Most tempering figures are per inch of thickness. You "HAVE TO" do your own testing, to find out what doesn't work. School of "Hard Knocks" is a teacher that you won't forget. If you forget, you shouldn't be playing the game. Don't be afraid of making a junk pile. Expecting someone to answer all your questions is precocious. Enjoy learning, your way. Neil
July 10, 20187 yr correct, most HT questions and answers are based on thickness, that is why we have a separate section for blades, most dealing with 1/4 inch or less in thickness.
July 10, 20187 yr According to a metallurgist I know multiple cycles are better as each cycle "jars" the crystalline structure a bit knocking a bit more into line. As phase changes are all statistical distributions it's hard to get 100% without going overboard. The temperature of course has to be based on alloy and intended use---you temper a sword the same way as a straight razor and you may end up cutting your own throat!---even if they were forged from the same alloy.
July 10, 20187 yr Author 12 hours ago, swedefiddle said: NOT!!! Most tempering figures are per inch of thickness. You "HAVE TO" do your own testing, to find out what doesn't work. School of "Hard Knocks" is a teacher that you won't forget. If you forget, you shouldn't be playing the game. Don't be afraid of making a junk pile. Expecting someone to answer all your questions is precocious. Enjoy learning, your way. Neil I was curious to know im not asking people to answer all my questions.
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