What is Q390C steel plate

What is Q390C steel plate?
Q390C steel plate is a kind of low-alloy high-strength steel. Q390C steel plate is named after its yield strength value, Q is the abbreviation of yield strength, that is, the yield strength of Q390C steel is 390 MPa, C means the impact temperature of Q390C steel is 0℃.

Chemical composition of Q390C steel plate:
C≤0.20, Si ≤0.50, Mn ≤1.7, P ≤0.030, S≤0.030, Nb≤0.07, V≤0.20, Ti≤0.20, Cr≤0.30, Ni≤0.50, Cu≤0.30, N≤0.015, Mo≤0.10, Al≤0.015.

The mechanical properties of Q390C steel plate are: yield strength ≥ 390 MPa, tensile strength 470-620 MPa, elongation after fracture ≥ 18%, impact energy 34J.

Application of Q390C steel plate:
Q390C steel plate is mainly used for bridges, vehicles, ships, workshops and other large structural parts, high and medium pressure Petrochemical vessels, boiler tubes, pipes, superheaters, pressure vessels, heavy machinery, etc.