普通碳素结构钢

研究了国产SS41普通碳素结构钢（非焊接性用钢）的焊接性能。

The weldability of the home-made plain carbon structural steel SS41 ( non-welding steel ) was studied .

而用普通碳素结构钢必须防腐。

But normal carbon constructional steel must be rot-proof treated .

考虑其造价、寿命，用普通碳素结构钢为宜。

Considering the cost , life of use , it is good to use normal carbon constructional steel .

因此棒条材料选弹簧钢，筛板框架材料选普通碳素结构钢。

Therefore , spring steel is chose as the material of bars and ordinary carbon steel is selected as sieve frame material , it is dissimilar metal welding between those two materials .

超级钢的化学成分与普通的碳素结构钢相近，但其力学性能有大幅度的提高。

Super steel has the same chemical composition with plain carbon steel , but its yield strength is higher than plain carbon steel because it has fine grain size .