按钢质量分类,优质碳素钢中硫、磷的含量应为()。A、S≤0.035%,P≤0.045%B、S≤0.035%,P≤0.035%C、S≤0.025%,P≤0.035%
按钢质量分类,优质碳素钢中硫、磷的含量应为()。
- A、S≤0.035%,P≤0.045%
- B、S≤0.035%,P≤0.035%
- C、S≤0.025%,P≤0.035%
相关考题:
TSG 21-2016规定标准抗拉强度下限小于或者等于540Mpa的钢材,其硫磷含量的控制应当为___。A. P≤0.035%、S≤0.035%;B. P≤0.030%、S≤0.020%;C. P≤0.025%、S≤0.015%。
GB/T699-1999《优质碳素结构钢》中规定:优质钢的S、P含量为()AS≤0.030% P≤0.030%BS≤0.030% P≤0.035%CS≤0.035% P≤0.030%DS≤0.035% P≤0.035%
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GB/T699-1999《优质碳素结构钢》中规定:优质钢的S、P含量为()A、S≤0.030% P≤0.030%B、S≤0.030% P≤0.035%C、S≤0.035% P≤0.030%D、S≤0.035% P≤0.035%
单选题GB/T699-1999《优质碳素结构钢》中规定:优质钢的S、P含量为()AS≤0.030% P≤0.030%BS≤0.030% P≤0.035%CS≤0.035% P≤0.030%DS≤0.035% P≤0.035%
单选题按钢的质量对钢进行分类,优质碳素钢中S、P的含量应()A分别小于0.055%和0.045%;B均小于0.04%;C分别小于0.03%和0.035%;D以上答案均不对。