钢铁基本知识大全(1)

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1、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......................................................................................................5八.度..................................

5、....................................................................5第二节.钢的分类...................................................................................................6一.黑色金属和有色金属..........................................................................61..黑色金属

6、..........................................................................................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...............................................................................63.按成形方法分类：........................................................

8、...................64.按金相组织分类...............................................................................75