2316 mold steel chemical composition of elements C Si Mn Cr Mo content (%) 0.4 0.9 0.5 13.6 0.2 equivalent AISI420 (ESR) ASSAB S-136H 2316 mold steel hardness factory pre-hardened to 31 ~ 35HRC 2136 features excellent corrosion resistance of the steel mold resistance, high polished, homogeneous, good overall performance. 2136 2316 mold steel use for the manufacture PVC, POM and other plastic products, or corrosive plastics and high-quality finish of plastic molds. 2316 mold steel forging physical characteristics: 1050-850 ℃ annealing: heating to 750-800 ℃, stay at this temperature for 1 to 3 hours in the oven to cool gradually. Quenching: the first pre-heated to 550 ~ 650 ℃, and then heated to 800 ~ 850 ℃, and then heated to 1020 ~ 1050 ℃, and then air-cooled, oil quenching or hot bath 350 ~ 500 ℃ quenching. Tempering: The first heated to 180 ~ 200 ℃, at this temperature to stay, and then cooled in still air; the second is heated to 200 ~ 600 ℃, according to the work required to select temperature. Hardness: up to 49HRC