portant; font-size: 16px; line-height: 30px; list-style-type: none; margin: 0px; padding: 0px;">M2高速钢简介
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portant; font-size: 16px; line-height: 30px; list-style-type: none; margin: 0px; padding: 0px;">M2是钼系高速钢,具有碳化物不均匀性小和韧性较高的优点.易于过热,故应严格控制淬火加热温度,对热处理保护要求较严.由于其硬度和耐磨性好,多用于制造切削较难切削材料的刀具.M2高速钢具有碳化物倾向性较大,故对热处理保护要求较严,适合承受震动和冲击荷载的模具.
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portant; font-size: 16px; line-height: 30px; list-style-type: none; margin: 0px; padding: 0px;">主要用途:
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portant; font-size: 16px; line-height: 30px; list-style-type: none; margin: 0px; padding: 0px;">冷锻模、精冲模、粉末压制模等,剪切机模,添加玻纤之塑料模等。适合承受震动和冲击荷载的模具:深拉模具、冲孔模。金属切割锯刃,冷镦和挤出工具等。
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portant; font-size: 16px; line-height: 30px; list-style-type: none; margin: 0px; padding: 0px;">M2高速钢化学成分
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portant; font-size: 16px; line-height: 30px; list-style-type: none; margin: 0px; padding: 0px;">碳 C :0.80~0.90(允许偏差:±0.01)
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portant; font-size: 16px; line-height: 30px; list-style-type: none; margin: 0px; padding: 0px;">硅 Si:0.20~0.45(允许偏差:±0.05)
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portant; font-size: 16px; line-height: 30px; list-style-type: none; margin: 0px; padding: 0px;">锰 Mn:0.15~0.40(允许偏差:+0.04)
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portant; font-size: 16px; line-height: 30px; list-style-type: none; margin: 0px; padding: 0px;">硫 S :≤0.030
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portant; font-size: 16px; line-height: 30px; list-style-type: none; margin: 0px; padding: 0px;">磷 P :≤0.030
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portant; font-size: 16px; line-height: 30px; list-style-type: none; margin: 0px; padding: 0px;">铬 Cr:3.80~4.40(允许偏差:±0.05)
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portant; font-size: 16px; line-height: 30px; list-style-type: none; margin: 0px; padding: 0px;">镍 Ni:允许残余含量≤0.30
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portant; font-size: 16px; line-height: 30px; list-style-type: none; margin: 0px; padding: 0px;">铜 Cu:允许残余含量≤0.25
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portant; font-size: 16px; line-height: 30px; list-style-type: none; margin: 0px; padding: 0px;">钒 V :1.75~2.20(允许偏差:±0.05)
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portant; font-size: 16px; line-height: 30px; list-style-type: none; margin: 0px; padding: 0px;">钼 Mo:4.50~5.50(允许偏差:尺寸≤6,±0.05;尺寸>6,±0.10)
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portant; font-size: 16px; line-height: 30px; list-style-type: none; margin: 0px; padding: 0px;">钨 W :5.50~6.75(允许偏差:尺寸≤10,±0.10;尺寸>10,±0.20)
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portant; font-size: 16px; line-height: 30px; list-style-type: none; margin: 0px; padding: 0px;">注:根据供需双方协议,V的含量可为1.60~2.20
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portant; font-size: 16px; line-height: 30px; list-style-type: none; margin: 0px; padding: 0px;">出厂硬度:≤255HB
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portant; font-size: 16px; line-height: 30px; list-style-type: none; margin: 0px; padding: 0px;">淬硬温度:1220-1240
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portant; font-size: 16px; line-height: 30px; list-style-type: none; margin: 0px; padding: 0px;">硬度:≤63
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