SECONDARY HARDNESS. The higher hardness developed by certain alloy steels when they are cooled from a tempering operation. This should always be followed by a second tempering operation.
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SOAKING. Prolonged holding at a selected temperature to effect homogenization of structure or composition.
VACUUM ANNEALING. Annealing carried out at sub-atmospheric pressure.
SLACK QUENCHING. The incomplete hardening of steel due to quenching from the austenitizing temperature at a rate slower than the critical cooling rate […]
SPRAY QUENCHING. A quenching process using spray nozzles to spray water or other liquids on a part. The quench rate is controlled by […]