钢铁知识大全 
                                                      目录 
 第一节.钢材机械性能介绍 .................................................................................4 
       一       .屈服点（σs ）......................................................................................4 
       二       .屈服强度（σ0.2 ）...............................................................................4 
       三       .抗拉强度（σb ）..................................................................................4 
       四       .伸长率（δs ）.......................................................................................4 
       五       .屈强比（σs/σb ）.................................................................................4 
       六       .硬度......................................................................................................4 
              1. 布氏硬度（HB ）.............................................................................4 
              2.  洛氏硬度（HR ）.............................................................................5 
              3.  维氏硬度（HV ）.............................................................................5 
       七       .强度......................................................................................................5 
       八       .刚度......................................................................................................5 
第二节.钢的分类...................................................................................................6 
       一       .黑色金属和有色金属..........................................................................6 
              1. .黑色金属..........................................................................................6 
              2.  .有色金属..........................................................................................6 
       二       .钢的分类..............................................................................................6 
              1. 按品质分类.......................................................................................6 
              2.  按化学成份分类...............................................................................6 
              3.  按成形方法分类：...........................................................................6 
              4.  按金相组织分类...............................................................................7 
              5. 按用途分类.......................................................................................7 
              6.  综合分类...........................................................................................7 
              7.  按冶炼方法分类...............................................................................7 
第三节.我国钢号表示方法...................................................................................8 
       一       .我国钢号表示方法概述......................................................................8 
       二       .我国钢号表示方法的分类说明......
钢铁知识大全.doc