<h1 style="margin: 0px 0px 15px; padding: 0px; outline: 0px; font-size: 34px; width: 978px; line-height: 33px; border-bottom-style: solid; border-bottom-width: 1px; border-bottom-color: rgb(204, 204, 204); text-align: center; color: rgb(0, 0, 0); font-family: 'Microsoft YaHei', SimHei, Verdana; font-weight: 500;"> <span style="margin: 0px; padding: 0px; outline: 0px; font-size: 34px;">4Cr10Si2Mo</span></h1> <p style="margin: 0px; padding: 0px 12px; outline: 0px; font-size: 12px; text-indent: 2em; color: rgb(0, 0, 0); font-family: Arial, Helvetica, sans-serif; line-height: 24px;"> &nbsp;</p> <h2 style="margin: 0px; padding: 0px; outline: 0px; font-size: 24px; color: rgb(0, 0, 0); line-height: 24px; font-family: 'Microsoft YaHei', SimHei, Verdana; font-weight: 500;"> <span style="margin: 0px; padding: 0px; outline: 0px; font-size: 24px; line-height: 24px;">特性及适用范围</span></h2> <div style="margin: 15px 0px 5px; padding: 0px; outline: 0px; font-size: 14px; line-height: 24px; color: rgb(51, 51, 51); font-family: arial, 宋体, sans-serif;"> 有较高的热强性，作内燃机进气阀，轻负荷发动机的排气阀等。</div> <div style="margin: 0px; padding: 0px; outline: 0px; font-size: 14px; color: rgb(0, 0, 0); line-height: 24px; font-family: arial, 宋体, sans-serif;"> &nbsp;</div> <h2 style="margin: 0px; padding: 0px; outline: 0px; font-size: 24px; color: rgb(0, 0, 0); line-height: 24px; font-family: 'Microsoft YaHei', SimHei, Verdana; font-weight: 500;"> <span style="margin: 0px; padding: 0px; outline: 0px; font-size: 16px; line-height: 24px; background-color: rgb(81, 156, 234); color: rgb(255, 255, 255);">3</span><span style="margin: 0px; padding: 0px; outline: 0px; font-size: 24px; line-height: 24px;">化学成分</span></h2> <div style="margin: 15px 0px 5px; padding: 0px; outline: 0px; font-size: 14px; line-height: 24px; color: rgb(51, 51, 51); font-family: arial, 宋体, sans-serif;"> 碳 C ：0.35～0.45硅 Si：1.90～2.60</div> <div style="margin: 15px 0px 5px; padding: 0px; outline: 0px; font-size: 14px; line-height: 24px; color: rgb(51, 51, 51); font-family: arial, 宋体, sans-serif;"> 锰 Mn：&le;0.70</div> <div style="margin: 15px 0px 5px; padding: 0px; outline: 0px; font-size: 14px; line-height: 24px; color: rgb(51, 51, 51); font-family: arial, 宋体, sans-serif;"> 硫 S ：&le;0.030</div> <div style="margin: 15px 0px 5px; padding: 0px; outline: 0px; font-size: 14px; line-height: 24px; color: rgb(51, 51, 51); font-family: arial, 宋体, sans-serif;"> 磷 P ：&le;0.035</div> <div style="margin: 15px 0px 5px; padding: 0px; outline: 0px; font-size: 14px; line-height: 24px; color: rgb(51, 51, 51); font-family: arial, 宋体, sans-serif;"> 铬 Cr：9.00～10.50</div> <div style="margin: 15px 0px 5px; padding: 0px; outline: 0px; font-size: 14px; line-height: 24px; color: rgb(51, 51, 51); font-family: arial, 宋体, sans-serif;"> 镍 Ni：&le;0.60</div> <div style="margin: 15px 0px 5px; padding: 0px; outline: 0px; font-size: 14px; line-height: 24px; color: rgb(51, 51, 51); font-family: arial, 宋体, sans-serif;"> 钼 Mo：0.70～0.90</div> <div style="margin: 0px; padding: 0px; outline: 0px; font-size: 14px; color: rgb(0, 0, 0); line-height: 24px; font-family: arial, 宋体, sans-serif;"> &nbsp;</div> <h2 style="margin: 0px; padding: 0px; outline: 0px; font-size: 24px; color: rgb(0, 0, 0); line-height: 24px; font-family: 'Microsoft YaHei', SimHei, Verdana; font-weight: 500;"> <span style="margin: 0px; padding: 0px; outline: 0px; font-size: 16px; line-height: 24px; background-color: rgb(81, 156, 234); color: rgb(255, 255, 255);">4</span><span style="margin: 0px; padding: 0px; outline: 0px; font-size: 24px; line-height: 24px;">力学性能</span></h2> <div style="margin: 15px 0px 5px; padding: 0px; outline: 0px; font-size: 14px; line-height: 24px; color: rgb(51, 51, 51); font-family: arial, 宋体, sans-serif;"> 抗拉强度 &sigma;b (MPa)：淬火回火,&ge;885</div> <div style="margin: 15px 0px 5px; padding: 0px; outline: 0px; font-size: 14px; line-height: 24px; color: rgb(51, 51, 51); font-family: arial, 宋体, sans-serif;"> 条件屈服强度 &sigma;0.2 (MPa)：淬火回火,&ge;685</div> <div style="margin: 15px 0px 5px; padding: 0px; outline: 0px; font-size: 14px; line-height: 24px; color: rgb(51, 51, 51); font-family: arial, 宋体, sans-serif;"> 伸长率 &delta;5 (%)：淬火回火,&ge;10</div> <div style="margin: 15px 0px 5px; padding: 0px; outline: 0px; font-size: 14px; line-height: 24px; color: rgb(51, 51, 51); font-family: arial, 宋体, sans-serif;"> 断面收缩率 &psi; (%)：淬火回火,&ge;35</div> <div style="margin: 15px 0px 5px; padding: 0px; outline: 0px; font-size: 14px; line-height: 24px; color: rgb(51, 51, 51); font-family: arial, 宋体, sans-serif;"> 硬度 ：退火,&le;269</div> <div style="margin: 0px; padding: 0px; outline: 0px; font-size: 14px; color: rgb(0, 0, 0); line-height: 24px; font-family: arial, 宋体, sans-serif;"> &nbsp;</div> <h2 style="margin: 0px; padding: 0px; outline: 0px; font-size: 24px; color: rgb(0, 0, 0); line-height: 24px; font-family: 'Microsoft YaHei', SimHei, Verdana; font-weight: 500;"> <span style="margin: 0px; padding: 0px; outline: 0px; font-size: 16px; line-height: 24px; background-color: rgb(81, 156, 234); color: rgb(255, 255, 255);">5</span><span style="margin: 0px; padding: 0px; outline: 0px; font-size: 24px; line-height: 24px;">热处理规范及金相组织</span></h2> <div style="margin: 15px 0px 5px; padding: 0px; outline: 0px; font-size: 14px; line-height: 24px; color: rgb(51, 51, 51); font-family: arial, 宋体, sans-serif;"> 热处理规范：1)淬火,1010～1040℃油冷;2)回火,120～160℃空冷。</div> <div style="margin: 15px 0px 5px; padding: 0px; outline: 0px; font-size: 14px; line-height: 24px; color: rgb(51, 51, 51); font-family: arial, 宋体, sans-serif;"> 金相组织：组织特征为马氏体型。</div>