Explanation
Low alloy engineering structural steel (GB/T 5216-2004) in which a small amount of alloy elements are added to low-carbon steel to make the yield strength of steel product in rolling state or normalizing state exceed 345MPa. high strength lowr alloy steel has higher mechanical properties than rolling non alloy low-carbon structural steel steel, and some varieties also have higher weather resistance and corrosion resistance. Low alloy high-strength steel can obtain high strength under the condition of low carbon content, so the weldability is equivalent to or better than ordinary non alloy low-carbon steel.
Classification
Metals -> Steels -> Alloy steels