P21(T51621)模具鋼,P21(T51621),圓棒,板材,可切割毛料,洗磨精光板
P21(T51621)模具鋼(13524351833)
牌號(hào):P21/T51621
標(biāo)準(zhǔn):ASTM A681-08
化學(xué)成分:
碳 C:0.18~0.22
錳 Mn:0.20~0.40
磷 P:≤0.030
硫 S:≤0.030
硅Si:0.20~0.40
鉻Cr:0.20~0.30
釩V:0.15~0.25
鎢 W:~
鉬 Mo:~
鎳 Ni:3.90~4.25



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