内容标题35

  • <tr id='S1bqz7'><strong id='S1bqz7'></strong><small id='S1bqz7'></small><button id='S1bqz7'></button><li id='S1bqz7'><noscript id='S1bqz7'><big id='S1bqz7'></big><dt id='S1bqz7'></dt></noscript></li></tr><ol id='S1bqz7'><option id='S1bqz7'><table id='S1bqz7'><blockquote id='S1bqz7'><tbody id='S1bqz7'></tbody></blockquote></table></option></ol><u id='S1bqz7'></u><kbd id='S1bqz7'><kbd id='S1bqz7'></kbd></kbd>

    <code id='S1bqz7'><strong id='S1bqz7'></strong></code>

    <fieldset id='S1bqz7'></fieldset>
          <span id='S1bqz7'></span>

              <ins id='S1bqz7'></ins>
              <acronym id='S1bqz7'><em id='S1bqz7'></em><td id='S1bqz7'><div id='S1bqz7'></div></td></acronym><address id='S1bqz7'><big id='S1bqz7'><big id='S1bqz7'></big><legend id='S1bqz7'></legend></big></address>

              <i id='S1bqz7'><div id='S1bqz7'><ins id='S1bqz7'></ins></div></i>
              <i id='S1bqz7'></i>
            1. <dl id='S1bqz7'></dl>
              1. <blockquote id='S1bqz7'><q id='S1bqz7'><noscript id='S1bqz7'></noscript><dt id='S1bqz7'></dt></q></blockquote><noframes id='S1bqz7'><i id='S1bqz7'></i>
                沪程实业(上海)有限公司 沪程实业(上海)有限公司

                55Si2MnA

                执行标准GB/T1222—1984。牌号60Si2Mn;化学成分%:C0.56~0.64,Si1.50~2.00,Mn1.00~1.30,Cr小 于等于0.35;淬火温度:870;冷却剂:油;回火温度:480;屈服点:MPA1175;抗拉强度:1275;伸长率:5;收缩就率:25。特性及用 途(60Si2Mn、60Si2MnA):钢的强度々和弹性较55SI2MN和55SIMNB稍高,淬透性亦较高。适于制作铁道车辆∞、汽车、拖拉机上承△受较 大负荷的扁形弹簧或线径在30mm以下的螺旋弹簧,如汽车、火车车厢下部承受应力和振动用的板簧、气缸安全阀簧、止回阀簧以及工作温度在250度以下非腐 蚀介质中的耐热弹〖簧,也可用于其他受剧烈磨损的机械零件。65MnΦ16-Φ180、 65Mn 钢板1.5--3.0、60Si2CrΦ11-Φ12、60Si2MnΦ14-Φ260