<h1 class="title maintitle" id="" style="margin: 0px 0px 14px; padding: 0px; font-size: 34px; width: 700px; font-family: 'Microsoft YaHei', SimHei, Verdana; line-height: 34px; color: rgb(0, 0, 0); font-weight: 500; z-index: 0; position: relative; overflow: hidden; zoom: 1; clear: right;"> <span class="lemmaTitleH1" style="height: auto; padding: 0px 0px 5px; display: inline;">42CrMo</span></h1> <p> &nbsp;</p> <p> <span style="color: rgb(51, 51, 51); font-family: arial, 宋体, sans-serif; font-size: 14px; line-height: 24px; text-indent: 28px;">42CrMo钢属于超高强度钢，具有高强度和韧性，淬透性也较好，无明显的回火脆性，调质处理后有较高的疲劳极限和抗多次冲击能力，低温冲击韧性良好。该钢适宜制造要求一定强度和韧性的大、中型塑料模具。</span></p> <p> &nbsp;</p> <p> <a href="http://baike.baidu.com/view/91950.htm" style="text-decoration: none; color: rgb(19, 110, 194); font-family: arial, 宋体, sans-serif; font-size: 14px; line-height: 24px; text-indent: 28px;" target="_blank">强度</a><span style="color: rgb(51, 51, 51); font-family: arial, 宋体, sans-serif; font-size: 14px; line-height: 24px; text-indent: 28px;">、淬透性高，</span><a href="http://baike.baidu.com/view/545555.htm" style="text-decoration: none; color: rgb(19, 110, 194); font-family: arial, 宋体, sans-serif; font-size: 14px; line-height: 24px; text-indent: 28px;" target="_blank">韧性</a><span style="color: rgb(51, 51, 51); font-family: arial, 宋体, sans-serif; font-size: 14px; line-height: 24px; text-indent: 28px;">好，淬火时变形小，高温时有高的蠕变强度和</span><a href="http://baike.baidu.com/view/1502846.htm" style="text-decoration: none; color: rgb(19, 110, 194); font-family: arial, 宋体, sans-serif; font-size: 14px; line-height: 24px; text-indent: 28px;" target="_blank">持久强度</a><span style="color: rgb(51, 51, 51); font-family: arial, 宋体, sans-serif; font-size: 14px; line-height: 24px; text-indent: 28px;">。用于制造要求较35CrMo钢强度更高和</span><a href="http://baike.baidu.com/view/891605.htm" style="text-decoration: none; color: rgb(19, 110, 194); font-family: arial, 宋体, sans-serif; font-size: 14px; line-height: 24px; text-indent: 28px;" target="_blank">调质</a><span style="color: rgb(51, 51, 51); font-family: arial, 宋体, sans-serif; font-size: 14px; line-height: 24px; text-indent: 28px;">截面更大的锻件，如机车牵引用的大齿轮、增压器传动齿轮、压力容器齿轮、后轴、受载荷极大的连杆及弹簧夹，也可用于 2000m以下石油深井钻杆接头与打捞工具，并且可以用于折弯机的模具等。</span></p> <p> &nbsp;</p> <p> 化学成分：</p> <p> &nbsp;</p> <p> <span style="color: rgb(51, 51, 51); font-family: arial, 宋体, sans-serif; font-size: 14px; line-height: 24px; text-indent: 2em;">&nbsp; &nbsp; &nbsp; 碳 C ：0.38～0.45%</span></p> <div class="para" style="color: rgb(51, 51, 51); margin: 15px 0px 5px; text-indent: 2em; line-height: 24px; font-family: arial, 宋体, sans-serif; font-size: 14px;"> 硅 Si：0.17～0.37%</div> <div class="para" style="color: rgb(51, 51, 51); margin: 15px 0px 5px; text-indent: 2em; line-height: 24px; font-family: arial, 宋体, sans-serif; font-size: 14px;"> 锰 Mn：0.50～0.80%</div> <div class="para" style="color: rgb(51, 51, 51); margin: 15px 0px 5px; text-indent: 2em; line-height: 24px; font-family: arial, 宋体, sans-serif; font-size: 14px;"> 硫 S ：允许残余含量&le;0.035%</div> <div class="para" style="color: rgb(51, 51, 51); margin: 15px 0px 5px; text-indent: 2em; line-height: 24px; font-family: arial, 宋体, sans-serif; font-size: 14px;"> 磷 P ：允许残余含量&le;0.035%</div> <div class="para" style="color: rgb(51, 51, 51); margin: 15px 0px 5px; text-indent: 2em; line-height: 24px; font-family: arial, 宋体, sans-serif; font-size: 14px;"> 铬 Cr：0.90～1.20%</div> <div class="para" style="color: rgb(51, 51, 51); margin: 15px 0px 5px; text-indent: 2em; line-height: 24px; font-family: arial, 宋体, sans-serif; font-size: 14px;"> 镍 Ni：允许残余含量&le;0.030%</div> <div class="para" style="color: rgb(51, 51, 51); margin: 15px 0px 5px; text-indent: 2em; line-height: 24px; font-family: arial, 宋体, sans-serif; font-size: 14px;"> 铜 Cu：允许残余含量&le;0.030%</div> <div class="para" style="color: rgb(51, 51, 51); margin: 15px 0px 5px; text-indent: 2em; line-height: 24px; font-family: arial, 宋体, sans-serif; font-size: 14px;"> 钼 Mo：0.15～0.25%</div> <div class="para" style="color: rgb(51, 51, 51); margin: 15px 0px 5px; text-indent: 2em; line-height: 24px; font-family: arial, 宋体, sans-serif; font-size: 14px;"> &nbsp;</div> <div class="para" style="color: rgb(51, 51, 51); margin: 15px 0px 5px; text-indent: 2em; line-height: 24px; font-family: arial, 宋体, sans-serif; font-size: 14px;"> 物理性能：</div> <div class="para" style="color: rgb(51, 51, 51); margin: 15px 0px 5px; text-indent: 2em; line-height: 24px; font-family: arial, 宋体, sans-serif; font-size: 14px;"> <div class="para" style="margin: 15px 0px 5px; text-indent: 2em; line-height: 24px; font-size: 14px;"> <a href="http://baike.baidu.com/view/52178.htm" style="text-decoration: none; color: rgb(19, 110, 194);" target="_blank">抗拉强度</a>&sigma;b (MPa)：&ge;1080(110)</div> <div class="para" style="margin: 15px 0px 5px; text-indent: 2em; line-height: 24px; font-size: 14px;"> 屈服强度 &sigma;s (MPa)：&ge;930(95)</div> <div class="para" style="margin: 15px 0px 5px; text-indent: 2em; line-height: 24px; font-size: 14px;"> 伸长率 &delta;5 (%)：&ge;12</div> <div class="para" style="margin: 15px 0px 5px; text-indent: 2em; line-height: 24px; font-size: 14px;"> <a href="http://baike.baidu.com/view/52182.htm" style="text-decoration: none; color: rgb(19, 110, 194);" target="_blank">断面收缩率</a>&psi; (%)：&ge;45</div> <div class="para" style="margin: 15px 0px 5px; text-indent: 2em; line-height: 24px; font-size: 14px;"> 冲击功 Akv (J)：&ge;63</div> <div class="para" style="margin: 15px 0px 5px; text-indent: 2em; line-height: 24px; font-size: 14px;"> <a href="http://baike.baidu.com/view/52186.htm" style="text-decoration: none; color: rgb(19, 110, 194);" target="_blank">冲击韧性</a>值 &alpha;kv (J/cm2)：&ge;78(8)</div> <div class="para" style="margin: 15px 0px 5px; text-indent: 2em; line-height: 24px; font-size: 14px;"> 硬度 ：&le;217HB</div> <div class="para" style="margin: 15px 0px 5px; text-indent: 2em; line-height: 24px; font-size: 14px;"> 试样尺寸：试样毛坯尺寸为25mm</div> </div> <p> &nbsp;</p>