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Heat treating 5160 tool steel.
Manganese 0 75 to 1 00 manganese 0 65 to 1 00.
This reference does state that higher temperatures and longer times are needed to dissolve all the carbides in d7 than in other d series tools steels.
5160 has very good toughness with a heat treatment using an austenitizing temperature of 1500 1525 f and tempered at 375 400 f.
Heat the steel to non magnetic any way you can 815 c 1500 f no hold time required just get the entire blade to this temperaturequickly quench in luke warm canola oil oil is about 30 c 86 f sand the flats with some sand paper just enough to get a few shiny sections temper the blade in the stove for 2 hours x 2 at 200 c 390 f the.
Designer and knifemaker derick rougeau heat treats 5160 steel to be used for torture testing.
5160 steel spec s and heat treating.
From the asm manual.
Skipping cryo may improve toughness slightly with a drop in hardness but this was not tested.
How to heat treat simple carbon steels the short version.
5160 aisi 5160h aisi.
Heat treat instructions for this grade can be found in the asm heat treaters guide.
Definitive heat treat sae 5160 51200.
That results in 58 5 59 5 rc and very high toughness when heat treated with a cryo step.