S355JR steel quenching is heated the S355JR steel to a critical temperature Ac3 (hypoeutectoid steel) or Ac1 (hypereutectoid steel) above temperature, heat preservation for a period of time, make all or partial austenitizing S355JR steel plate, and then to greater than the critical cooling rate of cold faster cold below Ms to martensite isothermal near (or Ms) or bainite transformation of heat treatment process.
Usually will also aluminum alloy, copper alloy, titanium alloy, toughened glass materials such as solid solution treatment or with fast cooling process of heat treatment process called quenching.
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