Q345 steel detection
For the detection of Q345 steel, on the one hand, whether the element content of the steel meets the requirements of the national standard, and the most important aspect is whether the mechanical properties (yield strength, tensile test) of the steel meet the standard through professional institutions.
performance and application
Q345 steel has good comprehensive mechanical properties, good low temperature performance, good plasticity and weldability. Therefore, Q345 steel is used as medium and low pressure containers, oil tanks, vehicles, cranes, mining machinery, power stations, bridges and other dynamic load-bearing structures, mechanical parts, building structures, general metal structural parts, hot-rolled or normalized, Q345 steel It can be used in various structures in cold regions below -40°C.
The difference between Q235 steel and Q345 steel
The lower limit of yield strength of Q235 steel is 235mpa, and the lower limit of yield strength of Q345 steel is 345mpa.
Q235 steel is ordinary carbon steel, and Q345 steel is low alloy steel.
If the structure is controlled by strength, Q345 steel can be considered, and if the structure is controlled by stiffness, Q235 steel can be considered.
