What is steel grade Q345C equivalent

What is steel grade Q345C equivalent? In order to better understand this question, first, let us make it clear that what is steel grade Q345C? The steel grade Q345C is Chinese GB standard low alloy high strength structural steel with 470-630 Mpa tensile strength and min. 345 MPa yield strength. The steel grade Q345C has better properties than Q235 steel.

The steel grade Q345C density is 7.85 g/cm3. And its impact test temperature is 0℃. The steel grade Q345C equivalent certainly has no big difference with Q345C steel in properties and performance. After comparison, we can find EN standard S355J0 is steel grade Q345C equivalent.

The steel grade Q345C contains low alloy elements. And it has good weldability, cold and hot workability. Besides, it also has certain corrosion resistance. That makes Q345C steel widely used in bridges, ships, boilers, pressure vessels, petroleum storage tanks, lifting transport machinery and other high-load welded structural parts.