Q345 is a material of steel. It is a low alloy steel (C<0.2%) and is widely used in construction, bridges, vehicles, ships, pressure vessels, etc. Q represents the yield strength of this material, and the latter 345 refers to the yield value of this material, around 345 MPa. And the yield value decreases as the thickness of the material increases.
Q345 has good comprehensive mechanical properties, good low temperature performance, good plasticity and weldability. It is used as a medium, low pressure vessel, oil tank, vehicle, crane, mining machinery, power station, bridge and other structures that bear dynamic loads, mechanical parts, building structures, and general Metal structural parts, used in hot-rolled or normalized conditions, can be used in a variety of structures in cold regions below -40 °C.
