16Mn steel plate (also known as Q345B) is a low alloy structural steel, with good comprehensive mechanical properties, welding properties and low temperature impact toughness, cold stamping and machinability are good.

The alloy content in the 16Mn steel plate is relatively small, so it has good weldability, and there is no need to preheat before welding. However, the hardening tendency of 16Mn steel plate is relatively large, so if the temperature is relatively low, or if the welding construction is on the thickness and rigidity of the relatively large components, appropriate preheating measures need to be taken.

Q235A steel plate is a common low carbon steel plate, mainly composed of iron, carbon, silicon, manganese, sulfur, phosphorus and other elements.

Q represents the yield of this material, and 235 in the back indicates that the yield strength is 235MPa, and its yield value decreases with the increase of the thickness of the material. Q235A carbon steel is often rolled into wire or round steel, square steel, flat steel, Angle steel, I-steel, channel steel, window frame steel and other types of steel, medium thickness steel plate.

Q235A steel plate has good plasticity, machinability, weldability and corrosion resistance, so it is widely used in construction, bridge, machinery manufacturing, light industry, shipbuilding, automobile manufacturing and other fields.