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不銹鋼304牌號元素

信息編號:63877398 發布時間:2025/7/24 13:56:35
以下按照中國國家標準GB/T 20878-2007、國際標準以及美國ASTM標準,為你介紹不銹鋼304牌號元素及含量范圍:
中國標準(GB/T 20878 - 2007)
|元素|含量范圍|
|碳(C)|≤0.08%|
|硅(Si)|≤1.00%|
|錳(Mn)|≤2.00%|
|磷(P)|≤0.045%|
|硫(S)|≤0.030%|
|鉻(Cr)|18.00% - 20.00%|
|鎳(Ni)|8.00% - 11.00%|

國際標準(ISO)
國際標準下304不銹鋼元素含量與中國標準相近,但表述略有不同:
|元素|含量范圍|
|碳(C)|≤0.07%|
|硅(Si)|≤1.00%|
|錳(Mn)|≤2.00%|
|磷(P)|≤0.045%|
|硫(S)|≤0.030%|
|鉻(Cr)|17.5% - 19.5%|
|鎳(Ni)|8.0% - 10.5%|

美國標準(ASTM)
美國ASTM標準中的304不銹鋼對應牌號為S30400 ,元素含量要求如下:
|元素|含量范圍|
|碳(C)|≤0.08%|
|硅(Si)|≤0.75%|
|錳(Mn)|≤2.00%|
|磷(P)|≤0.045%|
|硫(S)|≤0.030%|
|鉻(Cr)|18.0% - 20.0%|
|鎳(Ni)|8.0% - 11.0%|

在實際應用中,各標準雖存在細微差異,但都圍繞鉻、鎳等關鍵元素來確保304不銹鋼具備良好的耐腐蝕性和加工性能。
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