What are the characteristics of low alloy structural steel

What are the characteristics of low alloy structural steel?

Low alloy structural steel refers to the steel containing a small amount of alloy elements, which is mainly used in construction and engineering structures.

The carbon content of low alloy structural steel is generally not more than 0.20%, and the total content of alloy elements is not more than 3%. Due to the effect of alloy elements, the yield strength of low-alloy high-strength structural steel is 25% - 150% higher than that of carbon structural steel with the same carbon content. The use of low-alloy high-strength structural steel instead of carbon structural steel can reduce the weight of the structure, save metal materials and prolong the service life of the structure.

In addition, low alloy structural steel has good toughness and weldability, and some of them have the characteristics of corrosion resistance and low temperature resistance.