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Injection Plastic Mold Alloy Steel Plate / Flat Bar 1.2311 / P20 Similar grades: DIN-1.2311, AISI-P20, JIS-PDS-3, GB-3Cr2Mo Chemical Composition(%): C Si Mn S P Cr Mo 0.28-0.40 0.20-0.40 1.30-1.60 ≤0...