<p><span quot;font-size: large;">2017的合金元素为铜，是靠前个获得工业应用的2系合金，具有很高的强度和良好的切削加工性能，<br />但耐腐蚀性较差。主要应用于铆钉、通用机械零件、飞机、船舶、交通、建筑结构件、运输工具结构<br />件、螺旋桨元件及配件。</span></p> <table border="0" cellspacing="1" cellpadding="0" bgcolor="#999999"> <tbody> <tr> <td rowspan="2" width="69" bgcolor="#ffffff"> <p align="left"><span quot;font-size: 14pt;">主要成份％</span></p> </td> <td width="23" bgcolor="#ffffff"> <p align="center"><span quot;font-size: 14pt;">Cu</span></p> </td> <td width="45" bgcolor="#ffffff"> <p align="center"><span quot;font-size: 14pt;">Si</span></p> </td> <td width="33" bgcolor="#ffffff"> <p align="center"><span quot;font-size: 14pt;">Fe</span></p> </td> <td width="28" bgcolor="#ffffff"> <p align="center"><span quot;font-size: 14pt;">Mn</span></p> </td> <td width="72" bgcolor="#ffffff"> <p align="center"><span quot;font-size: 14pt;">Mg</span></p> </td> <td width="54" bgcolor="#ffffff"> <p align="center"><span quot;font-size: 14pt;">Zn</span></p> </td> <td width="54" bgcolor="#ffffff"> <p align="center"><span quot;font-size: 14pt;">Cr</span></p> </td> <td width="54" bgcolor="#ffffff"> <p align="center"><span quot;font-size: 14pt;">Ti</span></p> </td> <td width="54" bgcolor="#ffffff"> <p align="center"><span quot;font-size: 14pt;">Pb.Bi</span></p> </td> <td width="58" bgcolor="#ffffff"> <p align="center"><span quot;font-size: 14pt;">Al</span></p> </td> </tr> <tr> <td width="23" bgcolor="#ffffff"> <p align="center"><span quot;font-size: 14pt;">3.5~4.5</span></p> </td> <td width="45" bgcolor="#ffffff"> <p align="center"><span quot;font-size: 14pt;">0.2~0.8</span></p> </td> <td width="33" bgcolor="#ffffff"> <p align="center"><span quot;font-size: 14pt;">0.7</span></p> </td> <td width="28" bgcolor="#ffffff"> <p align="center"><span quot;font-size: 14pt;">0.4~1.0</span></p> </td> <td width="72" bgcolor="#ffffff"> <p align="center"><span quot;font-size: 14pt;">0.4~0.8</span></p> </td> <td width="54" bgcolor="#ffffff"> <p align="center"><span quot;font-size: 14pt;">0.25</span></p> </td> <td width="54" bgcolor="#ffffff"> <p align="center"><span quot;font-size: 14pt;">0.1</span></p> </td> <td width="54" bgcolor="#ffffff"> <p align="center"><span quot;font-size: 14pt;">0.15</span></p> </td> <td width="54" bgcolor="#ffffff"> <p align="center"><span quot;font-size: 14pt;">/</span></p> </td> <td width="58" bgcolor="#ffffff"> <p align="center"><span quot;font-size: 14pt;">余量</span></p> </td> </tr> </tbody> </table>