Carbon Structural Steel Square Bars S20C Specification 1, Size: 120*120mm; 130*130mm; 150*150mm; 160*160mm; 200*200mm 2, Length: Max 12m 3, Heat Treatment: Normalizing, Annealing, Tempering, Quenching 4, Surface Treatment: Black, Polished, Galvanized Application 1, Used in the manufacturing mechanical parts with high toughness but can not suffer great stress 2, Used in manufacturing carburizing and carbonitriding parts with high surface hardness. Chemical Composition % Products Show C Si Mn P S Cr Ni Cu 0.08-0.23 0.15-0.35 0.30-0.60 ≤0.030 ≤0.035 ≤0.20 ≤0.25 ≤0.25
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