UID:38309
UID:40332
UID:10768
UID:15149
引用第84楼巴乌于2012-04-05 12:21发表的 :常用工具用钢简略说明碳钢:CS主要指碳的质量分数小于2.11%而不含有特意加入的合金元素的钢。有时也称为普碳钢或碳素钢。含碳量越高,强度越高,塑性(韧性)越低。45#碳钢属于一种优质碳素钢(含磷、硫较低),广泛用于通用工具材料。.......
UID:25295
UID:33908
UID:77868
UID:32289
UID:34784
UID:19573
UID:7276
UID:78349
UID:83458
UID:58339
UID:33273
UID:31725
UID:27343
UID:38348
UID:30157
UID:25622
UID:18709
UID:88513
UID:29583
UID:87516
UID:24559