SUPERHEATING. Heating above the temperature at which an equilibrium phase transformation should occur without actually obtaining the transformation.
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SECONDARY HARDNESS. The higher hardness developed by certain alloy steels when they are cooled from a tempering operation. This should always be followed […]
WORK HARDNESS. Hardness developed in metal resulting from cold working.
TEMPER COLOR. A thin, tightly adhering oxide skin that forms when steel is tempered at a low temperature, or for a short time, […]
AGE HARDENING. Hardening by aging, usually after rapid cooling or cold working.