<p>2011的合金元素为铜，是含有微量铅和铋的易切削合金，具有很高的强度和良好的切削加工性能，但耐腐蚀性较差，常见为棒材、管材和线材。用于制造螺钉及要求良好切削性能的机械加工产品。</p> <table border="0" cellspacing="1" cellpadding="0" width="550" align="center" bgcolor="#d3c431" bordercolor="#ffffff"> <tbody> <tr bgcolor="#f0f0ca"> <td colspan="15" height="35"> <p class="style4" align="left"><strong><span quot;color: #996600;">化学成分(Chemical Composition Limits wt%</span>)</strong></p> </td> </tr> <tr bgcolor="#fafaed"> <td width="90" height="35"> <p align="center">Cu</p> </td> <td width="65" height="35"> <p align="center">Si</p> </td> <td width="63" height="35"> <p align="center">Fe</p> </td> <td width="43" height="35"> <p align="center">Mn</p> </td> <td width="41" height="35"> <p align="center">Mg</p> </td> <td width="41" height="35"> <p align="center">Zn</p> </td> <td width="43" height="35"> <p align="center">Cr</p> </td> <td width="45" height="35"> <p align="center">Ti</p> </td> <td width="58" height="35"> <p align="center">Pb.Bi</p> </td> <td width="50" height="35"> <p align="center">Al</p> </td> </tr> <tr bgcolor="#ffffff"> <td height="35"> <p align="center">5.0-6.0</p> </td> <td height="35"> <p align="center">0.40</p> </td> <td height="35"> <p align="center">0.70</p> </td> <td height="35"> <p align="center">/</p> </td> <td height="35"> <p align="center">/</p> </td> <td height="35"> <p align="center">0.30</p> </td> <td height="35"> <p align="center">/</p> </td> <td height="35"> <p align="center">/</p> </td> <td height="35"> <p align="center">0.2-0.6</p> </td> <td height="35"> <p align="center">余量</p> </td> </tr> </tbody> </table> <p> </p> <table border="0" cellspacing="1" cellpadding="0" width="550" align="center" bgcolor="#d3c431" bordercolor="#ffffff"> <tbody> <tr bgcolor="#f0f0ca"> <td colspan="13" height="35"> <p align="left"><span class="style5"><span quot;color: #996600;"><strong>典型<strong>合金</strong>2011-T3机械和物<span quot;color: #996600;">理性能(Typical</span></strong><strong>Mechanical &</strong><strong>Physical Properties)</strong></span></span></p> </td> </tr> <tr bgcolor="#fafaed"> <td width="114" height="35"> <p align="center">焊接性</p> </td> <td width="115" height="35"> <p align="center">切削性</p> </td> <td width="105" height="35"> <p align="center">耐蚀性</p> </td> <td width="111" height="35"> <p align="center">电导率20℃(68℉)<br />(%IACS)</p> </td> <td width="99" height="35"> <p align="center">密度<br />(20℃)(g/cm3)</p> </td> </tr> <tr bgcolor="#ffffff"> <td height="35"> <p align="center">不推荐焊接</p> </td> <td height="35"> <p align="center">较好</p> </td> <td height="35"> <p align="center">差</p> </td> <td height="35"> <p align="center">30-40</p> </td> <td height="35"> <p align="center">2.83</p> </td> </tr> <tr bgcolor="#fafaed"> <td height="35"> <p align="center">抗拉强度<br />(25°C MPa)</p> </td> <td height="35"> <p align="center">屈服强度<br />(25°C MPa)</p> </td> <td height="35"> <p align="center">硬度<br />500kg力10mm球</p> </td> <td height="35"> <p align="center">延伸率<br />1.6mm(1/16in)厚度</p> </td> <td height="35"> <p align="center">非常大剪应力<br />MPa</p> </td> </tr> <tr bgcolor="#ffffff"> <td height="35"> <p align="center">380</p> </td> <td height="35"> <p align="center">295</p> </td> <td height="35"> <p align="center">95</p> </td> <td height="35"> <p align="center">13</p> </td> <td height="35"> <p align="center">220</p> </td> </tr> </tbody> </table>