1.2083 stainless steel, 1.2083 ESR steel bars, 420 stainless steels, 420SS stainless steels, 1.2083 steel equivalent, 420SS heat treat, 420SS hardness, 420SS plate UDDEHOLM STAVAX ESRProtect the steel and heat through to 890°C (1630°F). Then cool in the furnace at 20°C (40°F) per hour to 850°C (1560°F), then at 10°C (20°F) per hour to 700°C (1290°F), then freely in air. Stress relieving After rough machining the tool should be heated through to 650°C (1200°F), holding time 2 hours. Cool slowly to 500 °C (930°F),
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