该钢种属普通低碳合金钢，其特点是以价格较低的V，Mn，Cr取代昂贵的Ni，Mo，B等进行合金化，勿需热处理，生产工艺简单。
This steel is a plain carbon structural steel , its advantage is using cheap V , Mn , Cr instead of expensive Ni , Mo , B and other elements for alloying .
普通低合金钢