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| 非合金弹簧钢 (【技】用于制造各种弹簧和弹性件的非合金钢。曾经称为碳素弹簧钢。其含碳量较高，有很高的强度、硬度、比例极限和弹性模量，但塑性、韧性不高，淬透性低，耐热性差。多用来制造断面尺寸小、工作温度不高的小型弹簧，或是性能要求不高、断面尺寸较大的弹簧、弹性件。) | |||
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