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Hardening & Tempering

Salt Bath Heat Treatment (1000°F to 2300°F)

Of high speed, tool steels, carbon/low alloy steels and gray/ductile iron casting using salt, air, or oil quenching.

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Precipitation (Age) Hardening

A heat treatment technique used to increase the yield strength of malleable materials. In superalloys, it is known to cause yield strength anomaly, providing excellent high-temperature strength.

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Austenite is transformed to martensite by step quenching in molten salt, at a rate fast enough to avoid the formation of ferrite, pearlite, or bainite.

Learn more about Marquenching