Performance Characteristics:
Superior resistance to corrosion, no need for special care or maintenance; S136 is smelted by using vacuum degassing, so that the quality is more purified, the structure is even dense and the polish property is excellent; already pre-hardened and no need for further heat treatment, suitable for direct mold cutting.
Applications:
S136 is suitable for plastic molds, and has better antirust properties for the molds used under wet environment. It is mainly used for making of the high-quality transparent plastic moulds, like sunglasses and optical instruments.
Chemical Composition(%):
C ：0.36～0.45 Si：≤0.60 Mn：≤0.80 S ：≤0.030
P ：≤0.035 Cr：12.00～14.00 Ni：≤0.60
Heat treatment standard:
(1) annealing, 800 ~ 900 ℃ slow cooling or about 750 ℃ quick cooling;
(2) quenching, 1050 ~ 1100 ℃ cold oil;
(3) tempering, 200 ~ 300 ℃ rapid cooling .
