Difference between structural steel and 45 steel

Different uses and advantages:
1. Structural steel is a common building material, often used to make structural parts of houses, such as beams, columns, wall panels, etc. Its advantages are good weldability, machinability and processability, as well as high strength and good plastic deformation ability.
2. 45 steel has high hardness, strength and wear resistance, and is widely used in manufacturing mechanical parts and cutting tools. At the same time, 45 steel also has better processability and weldability.