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| 低屈强比钢 (【技】即屈强比明显低于其他钢种的高强度合金钢。材料的屈强比即其屈服强度与拉伸强度之比，是衡量金属板材冲压性能的重要指标。一般要求非合金钢的屈强比不大于70%,低合金高强度钢的屈强比不大于80%,否则冲压性能较差，必须采取一定的工艺措施改善其冲压加工性。深冲用钢板的屈强比不大于66%。双相钢是典型的低屈强比钢。) | |||
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