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HAP72 | “HS10-8-5-10”

Numeric designationHAP72
Chemical designation"HS10-8-5-10"
Etching5 % Nital

This powder metallurgically produced high-speed steel contains 3.7 – 4.7% chromium, 8 – 8.5% molybdenum, 9 – 10% wolfram, 4.8 – 5.10% vanadium and 9 – 10% cobalt, thus corresponds to a (fictitious) “HS10-8-5-10”.