Thread: ats-34 vs 420hc
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Old 10-18-2008, 09:59 AM
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tmickley tmickley is offline
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Join Date: Jun 2002
Location: North Mankato, MN
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My heat treat recipe (from crucible)
for cpm154, I fast ramp it to 1450, hold for 10 minutes then fast ramp up again to 1950F, hold for 25 minutes and then plate quench. This gives me a 61.5 to 62RC. Then into cryo liquid nitrogen for 8 hours. This gives me another point in RC hardness. Temper at 450F twice for a 59RC.
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