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42CrMo钢:是超高强度钢,具有高强度和韧性,淬透性也较好,无明显的回火脆性,淬火时变形小,调质处理后有较高的疲劳极限和抗多次冲击能力,低温冲击韧度良好,高温时有高的蠕变强度和持久强度,及可靠的耐磨性。/r
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45钢:调质处理后零件具有良好的综合机械性能,广泛应用于各种重要的结构零件,特别是那些在交变负荷下工作的连杆、螺栓、齿轮及轴类等。但表面硬度较低,不耐磨。可用调质+表面淬火提高零件表面硬度。/r
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42CrMo与45钢区别/r
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1: 42CrMo 为合金结构钢,碳含量为0.38--0.45%,含铬0.9--1.2%,含钼0.15--0.25%,抗拉强度为1100MPa ,屈服点为950MPa 。用负荷较大,耐磨性好!要求可靠性较高的零部件。/r
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2: 45为优质碳素结构钢,碳含量为0.42--0.50%,抗拉强度为610MPa ,屈服点为360MPa ;用于一般轴类零件。
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