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Widely Use For Making Injection Plastic Mould S50C Carbon Tool Steel Chemical Composition(%) C Si Mn P S Cr Ni Cu 0.47-0.53 0.15-0.35 0.6-0.9 ≤0.035 ≤0.035 ≤0.25 ≤0.25 ≤0.25 Sizes for your choose ...