What is the difference between Q195 steel and 20# steel

Q195 steel is common carbon structural steel, in which alloy elements are not specially added. Q195 steel is mainly used in construction and engineering structures. Q195 steel has low carbon and manganese content, low strength, good plasticity, high toughness, good process performance and weldability.

20# steel is high-quality carbon structural steel. In this kind of steel, no alloy element is specially added. 20# steel is mainly used in machine structure manufacturing, and has become non alloy steel for machine manufacturing. 20# steel is a kind of high-quality structural steel with a large amount of use. 20# steel has higher strength than Q195 steel, good weldability and no temper brittleness. Machinability of 20# steel can be improved by water quenching.