钢材大致可分为四类：炭素钢，合金钢，高强度低合金钢和不锈钢。

There are four broad classifications of steel: carbon steels, alloy steels, high-strength low-alloy steels and stainless steels.

youdao

钢材大致辞可分为四类，即：碳素钢、合金钢、高强度低合金钢和不锈钢。

There are four broad classifications of steel : carbon steels, alloy steels, high-strength low-alloy steels and stainless steels.

youdao

FS 12 A适用于所有铁类金属及合金钢材。

FS 12ais suitable for all ferrous metals and steel alloys.

youdao