60Si2MnA is a kind of ( ), its Si content is ( ), its Mn content is ( )
A.
alloy structural steel or alloy spring steel, <2%, <1%
B.
high strength low alloy steel, <2%, <1%
C.
alloy structural steel or alloy spring steel, between 1.5% and 2.49%, <1.5%< /div>
D.
high strength low alloy steel, between 1.5% and 2.49%, <1.5%< /div>
拍照语音搜题,微信中搜索"皮皮学"使用
参考答案:
参考解析:
知识点: