DH500 DH500-Z25 DH500-Z35 high strength structural steel plate for ship and ocean

DH500 steel plate belongs to high strength ship and marine structural steel plate. From the development of high strength ship plate in the world today, low carbon equivalent, microalloying, controlled rolling and controlled cooling, heat treatment and other technologies are widely used. The participation of microalloying elements can not only improve the strength, compensate for the strength loss caused by the reduction of carbon equivalent, but also enhance the welding, mechanical and technological properties of steel. Because the application environment requirements of DH500 high-strength ship plate, it can meet the requirements of high strength, high toughness, high welding performance, and thickness direction performance.

Chemical composition of DH500 structural steel plate (melting analysis%):
C≤0.20; Si≤0.55; Mn≤1.70; P≤0.25; S≤0.25; N≤0.020

Mechanical properties of DH500 steel plate:
Yield strength≥500;
Tensile strength 610-770;
Elongation%:≥16;
Test temperature/°C: - 40°;
Impact energy Akv/J Longitudinal direction: C≥50;

DH500 structural steel plate heat treatment:
TMCP, quenching and tempering and TMCP+tempering. Z25 or Z35 can be selected. Requirements of flaw detection specification, flaw detection grade, Z-direction performance requirements, classification society certification requirements, requirements for adding special alloy elements, etc can be met.