钢铁知识大全.doc

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1、钢铁知识大全目录第一节.钢材机械性能绍.................................................................................4一.屈服点（σs）......................................................................................4二.屈服强度（σ0.2）....................................................

2、...........................4三.抗拉强度（σb）..................................................................................4四.伸长率（δs）.......................................................................................4五.屈强比（σs/σb）...............................

3、..................................................4六.度......................................................................................................41.布氏硬度（HB）.............................................................................42.洛氏硬度（HR）......

4、.......................................................................53.维氏硬度（HV）.............................................................................5七.度..................................................................................................

5、....5八.度......................................................................................................5第二节.钢的分类...................................................................................................6一.黑色金属和有色金属...............................

6、...........................................61..黑色金属..........................................................................................62..有色金属..........................................................................................6二.钢的分类...............

7、...............................................................................61.按品质分类.......................................................................................62.按化学成份分类.............................................................................

8、..63.按成形方法分类：...........................................................................64.按金相组织分类...........................................................................