Studies on 16MnR,16Mnq,SM490C and 14MnNbq show that in the five elements of C,Si,Mn,P and S the content of S has greater effect on the impact toughness of the steel.

• 对 16MnR、16Mnq、SM490C以及 14MnNbq研究表明 :在C、Si、Mn、P和S五元素当中 ,S含量对钢的冲击韧性影响较大。