S136 S136 chemical composition of the elements C Si Mn Cr PS content (%) 13.6 0.8 0.5 0.38 <0.03 <0.03 Factory annealing to 235HB hardness characteristics by refining (VD) + ESR refining (ESR), the organization is more pure and subtle, excellent corrosion resistance, polishability, good wear resistance, machinability, excellent dimensional stability when hardened. Uses high polished degree and high demand within the module, high corrosion resistance of plastic mold, manufacturing, medical, food industry and other products. S136 S136 advantage is excellent corrosion resistance plastic mold steel, with excellent production characteristics, but more of the following advantages: lower maintenance costs: dies after prolonged use, the original cavity surface remains smooth state. Mold in humid environment or store operation, the need of special protection. Lower production costs: because the mold does not affect the cooling water and corrosion because of a certain cooling cycle, increase the die life. The benefits listed above, S136 combines high corrosion resistance, low maintenance costs and provide a high life of the mold, to achieve the best value for money. Meanwhile S136 after remelting (ESR) refining, with clean and subtle organization, the mold has good mechanical properties, high polishing performance. Uses S136 can be used with all of the mold, because of its special nature, is more suitable for the special needs of the environment. Corrosion resistance strain: the use of corrosive PVC acetate salts (ACETATES0) and other raw materials or injection mold must be at work and stored in a wet environment, S136 resistant to water vapor, weak organic acids, nitrates, carbonates corrosive effect of salt or the like, via a mold made of S136, if operating in humid environment, or the use of corrosive plastic material in a normal state, will not rust and contamination. If tempering to 250 ℃ and polished into a mirror surface state, in particular, can show excellent corrosion resistance.