溢达供应9CrWMn模具钢耐蚀性好9CrWMn研磨和抛光性能材料溢达供应9CrWMn模具钢耐蚀性好9CrWMn研磨和抛光性能材料溢达供应9CrWMn模具钢耐蚀性好9CrWMn研磨和抛光性能材料溢达供应9CrWMn模具钢耐蚀性好9CrWMn研磨和抛光性能材料溢达供应9CrWMn模具钢耐蚀性好9CrWMn研磨和抛光性能材料溢达供应9CrWMn模具钢耐蚀性好9CrWMn研磨和抛光性能材料溢达供应9CrWMn模具钢耐蚀性好9CrWMn研磨和抛光性能材料溢达供应9CrWMn模具钢耐蚀性好9CrWMn研磨和抛光性能材料溢达供应9CrWMn模具钢耐蚀性好9CrWMn研磨和抛光性能材料溢达供应9CrWMn模具钢耐蚀性好9CrWMn研磨和抛光性能材料溢达供应9CrWMn模具钢耐蚀性好9CrWMn研磨和抛光性能材料 化学成份 锰 Mn:0.90~1.20 硫 S :≤0.030 磷 P :≤0.030 铬 Cr:0.50~0.80 镍 Ni:允许残余含量≤0.25 铜 Cu:允许残余含量≤0.30 钨 W :0.50~0.80