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<p style="margin: 0px; padding: 0px 12px; outline: 0px; text-indent: 2em; color: rgb(0, 0, 0); font-family: Arial, Helvetica, sans-serif; line-height: 24px;"> <span style="margin: 0px; padding: 0px; outline: 0px; font-size: 14px; font-family: arial, sans-serif; line-height: 28px;">40Mn2，</span>合金結構鋼<span style="margin: 0px; padding: 0px; outline: 0px; font-size: 14px; font-family: arial, sans-serif; line-height: 28px;">。</span></p> <p style="margin: 0px; padding: 0px 12px; outline: 0px; text-indent: 2em; color: rgb(0, 0, 0); font-family: Arial, Helvetica, sans-serif; line-height: 24px;"> &nbsp;</p> <p> <span style="margin: 0px; padding: 0px; outline: 0px; font-size: 14px; color: rgb(0, 0, 0); font-family: arial, sans-serif; line-height: 28px;">標準：GB/T 3077-1999</span></p> <p style="margin: 0px; padding: 0px 12px; outline: 0px; text-indent: 2em; color: rgb(0, 0, 0); font-family: Arial, Helvetica, sans-serif; line-height: 24px;"> <span style="margin: 0px; padding: 0px; outline: 0px; font-size: 14px; font-family: arial, sans-serif; line-height: 28px;">【主要特性】</span></p> <p style="margin: 0px; padding: 0px 12px; outline: 0px; text-indent: 2em; color: rgb(0, 0, 0); font-family: Arial, Helvetica, sans-serif; line-height: 24px;"> &nbsp;</p> <p> <span style="margin: 0px; padding: 0px; outline: 0px; font-size: 14px; color: rgb(0, 0, 0); font-family: arial, sans-serif; line-height: 28px;">這是一種中碳調質錳鋼，鋼的</span><span style="color: rgb(0, 0, 0); font-family: Arial, Helvetica, sans-serif; line-height: 24px;">強度</span><span style="margin: 0px; padding: 0px; outline: 0px; font-size: 14px; color: rgb(0, 0, 0); font-family: arial, sans-serif; line-height: 28px;">、</span><span style="color: rgb(0, 0, 0); font-family: Arial, Helvetica, sans-serif; line-height: 24px;">塑性</span><span style="margin: 0px; padding: 0px; outline: 0px; font-size: 14px; color: rgb(0, 0, 0); font-family: arial, sans-serif; line-height: 28px;">和</span><span style="color: rgb(0, 0, 0); font-family: Arial, Helvetica, sans-serif; line-height: 24px;">耐磨性</span><span style="margin: 0px; padding: 0px; outline: 0px; font-size: 14px; color: rgb(0, 0, 0); font-family: arial, sans-serif; line-height: 28px;">都較高，可切削性及熱處理工藝性能亦好，在油中臨界淬透直徑達8.5～23mm，在水中臨界淬透直徑達20～42mm；但存在</span><span style="color: rgb(0, 0, 0); font-family: Arial, Helvetica, sans-serif; line-height: 24px;">回火脆性</span><span style="margin: 0px; padding: 0px; outline: 0px; font-size: 14px; color: rgb(0, 0, 0); font-family: arial, sans-serif; line-height: 28px;">和</span><span style="color: rgb(0, 0, 0); font-family: Arial, Helvetica, sans-serif; line-height: 24px;">過熱敏感性</span><span style="margin: 0px; padding: 0px; outline: 0px; font-size: 14px; color: rgb(0, 0, 0); font-family: arial, sans-serif; line-height: 28px;">，而且淬火時易于開裂。此鋼有白點敏感性，冷變形塑性不高，焊接性差，需要預熱到100～425℃后方可焊接。</span></p> <p style="margin: 0px; padding: 0px 12px; outline: 0px; text-indent: 2em; color: rgb(0, 0, 0); font-family: Arial, Helvetica, sans-serif; line-height: 24px;"> <span style="margin: 0px; padding: 0px; outline: 0px; font-size: 14px; font-family: arial, sans-serif; line-height: 28px;">【應用舉例】</span></p> <p style="margin: 0px; padding: 0px 12px; outline: 0px; text-indent: 2em; color: rgb(0, 0, 0); font-family: Arial, Helvetica, sans-serif; line-height: 24px;"> &nbsp;</p> <p> <span style="margin: 0px; padding: 0px; outline: 0px; font-size: 14px; color: rgb(0, 0, 0); font-family: arial, sans-serif; line-height: 28px;">一般在</span><span style="color: rgb(0, 0, 0); font-family: Arial, Helvetica, sans-serif; line-height: 24px;">調質</span><span style="margin: 0px; padding: 0px; outline: 0px; font-size: 14px; color: rgb(0, 0, 0); font-family: arial, sans-serif; line-height: 28px;">狀態下使用，可用于制造重負荷條件下工作的零件，如軸、曲軸、車軸、活塞桿、蝸桿、杠桿、連桿、有負荷的螺栓、螺釘、加固環、彈簧以及其它調質件。一般用于直徑小于50mm的小截面重要零件時，這種鋼的靜強度及</span><span style="color: rgb(0, 0, 0); font-family: Arial, Helvetica, sans-serif; line-height: 24px;">疲勞</span><span style="margin: 0px; padding: 0px; outline: 0px; font-size: 14px; color: rgb(0, 0, 0); font-family: arial, sans-serif; line-height: 28px;">性能均與40Cr鋼相當，故可作40Cr的代用鋼。</span><br style="margin: 0px; padding: 0px; color: rgb(0, 0, 0); font-family: Arial, Helvetica, sans-serif; line-height: 24px;" /> <br style="margin: 0px; padding: 0px; color: rgb(0, 0, 0); font-family: Arial, Helvetica, sans-serif; line-height: 24px;" /> <span style="color: rgb(0, 0, 0); font-family: Arial, Helvetica, sans-serif; line-height: 24px;">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;產品名稱：</span><strong style="margin: 0px; padding: 0px; outline: 0px; color: rgb(0, 0, 0); font-family: Arial, Helvetica, sans-serif; line-height: 24px;">性能40Mn2特性特鋼</strong><span style="color: rgb(0, 0, 0); font-family: Arial, Helvetica, sans-serif; line-height: 24px;">&nbsp;規格：13產地：撫鋼 類型：碳鋼</span></p>