440C STAINLESS TOOL STEEL
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STRESS
RELIEVING |
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| Heat to 650°C / 700°C. Hold for 2-4 hours and furnace cool. |
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HARDENING |
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| Heat slowly to 1010°C / 1060°C and oil quench. Smaller sections can be air cooled. As quenched hardness in the range of Rockwell "C" 60 / 61 is possible. |