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耐熱鋼牌號

更新时间:2019-11-09 15:21人气:5247

不鏽鋼和耐熱鋼牌號 不鏽鋼和耐熱鋼牌號采用表) 6 ) 6 " 規定的合金元素符號和阿拉伯數字表示,易切削不鏽鋼和耐熱鋼在牌號頭部加“7” 。一般用一名阿拉伯數字表示均勻含碳量(以千分之幾計)。當均勻含碳量不小於"#%%&時,采用二位阿拉伯數字表示。當含碳量上限小於%#"&時,以“%”表示含碳量,當含碳量上限不大於%#%*&,大於%#%"&時(超低碳),以“%*”表示含碳量。當含碳量上限不大於%#%"&時(極低碳),以“%"”表示含碳量。含碳量沒有規定下限時,采用阿拉伯數字表示含碳量的上限數字。合金元素含量表示方法同合金結構鋼。例如:均勻含碳量為%#)%&,含鉻量為"*&的不鏽鋼,其牌號表示為“)’("*”。含碳量上限為%#%5& ,均勻含鉻量為"5&,含鎳量為4&的鉻鎳,其牌號表示為“%’("5/04”。含碳量上限為%#")&、均勻含鉻量為".&的加硫易切削鉻不鏽鋼,其牌號表示為“7"’(".”。均勻含碳量為"#"%&,含鉻量為".&的高碳鉻不鏽鋼,其牌號表示為“""’(".”。含碳量上限為%#%*&,均勻含鉻量為"4&,含鎳量為"%&的超低碳不鏽鋼,其牌號表示為“%*’("4/0"%”。含碳量上限為%#%"&,均勻含鉻量為"4&,含鎳量為""&的極低碳不鏽鋼,其牌號表示為“%"’("4/0""”。(十)焊接用鋼焊接用鋼包括焊接用碳素鋼、焊接用合金鋼和焊接用不鏽鋼等,其牌號耐熱鋼牌號

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