東莞批發(fā)SKS31冷作模具鋼SKS31高淬透性模具鋼材東莞批發(fā)SKS31冷作模具鋼SKS31高淬透性模具鋼材東莞批發(fā)SKS31冷作模具鋼SKS31高淬透性模具鋼材東莞批發(fā)SKS31冷作模具鋼SKS31高淬透性模具鋼材東莞批發(fā)SKS31冷作模具鋼SKS31高淬透性模具鋼材東莞批發(fā)SKS31冷作模具鋼SKS31高淬透性模具鋼材東莞批發(fā)SKS31冷作模具鋼SKS31高淬透性模具鋼材東莞批發(fā)SKS31冷作模具鋼SKS31高淬透性模具鋼材東莞批發(fā)SKS31冷作模具鋼SKS31高淬透性模具鋼材東莞批發(fā)SKS31冷作模具鋼SKS31高淬透性模具鋼材東莞批發(fā)SKS31冷作模具鋼SKS31高淬透性模具鋼材東莞批發(fā)SKS31冷作模具鋼SKS31高淬透性模具鋼材東莞批發(fā)SKS31冷作模具鋼SKS31高淬透性模具鋼材東莞批發(fā)SKS31冷作模具鋼SKS31高淬透性模具鋼材東莞批發(fā)SKS31冷作模具鋼SKS31高淬透性模具鋼材東莞批發(fā)SKS31冷作模具鋼SKS31高淬透性模具鋼材東莞批發(fā)SKS31冷作模具鋼SKS31高淬透性模具鋼材東莞批發(fā)SKS31冷作模具鋼SKS31高淬透性模具鋼材 化學(xué)成分 標(biāo)準(zhǔn)(JIS G4404)w/% 碳 C :0.90~1.05 硅 Si:≤0.40 錳 Mn:0.80~1.10 硫 S :≤0.03 磷 P :≤0.03 鉻 Cr:0.90~1.20 鎳 Ni:允許殘余含量≤0.25 銅 Cu:允許殘余含量≤0.30 鎢 W :1.20~1.60