Composition and mechanical properties of S355G8+M hydroelectric steel

The applicable standard for S355G8+M hydropower steel is BS EN10225. The main use of steel plates is high-strength structural steel series products, which have good comprehensive mechanical properties, welding performance, and process performance. Suitable for manufacturing structural components such as offshore and offshore oil production platforms and dock equipment.

S355G8+M is a type of European standard steel plate, belonging to the weldable structural steel used for fixed coastal structures. Its delivery status is thermomechanical rolling, and the impact is -40 degrees impact test. The 8 after G represents the relevant numbers of steel grade characteristics. As for the later +M, it means thermomechanical rolling, which is just a method of naming steel grades in the standard.

Chemical composition of S355G8+M hydroelectric steel:
C:≤0.12, Si:0.15-0.55, Mn:1.00-1.65, S:≤0.005, P:≤0.020, AIs:≥0.015, Nb:≤0.030, V:≤0.060, Ti:≤0.025.

Mechanical properties of S355G8+M steel plate:
Tensile strength 470-630
Yield strength 355
Elongation 22
Impact temperature -40
Impact energy 50

Same type of hydropower steel:
S355G8+N, S355G8+M, S460G2+QT, S355G10+N, S355G10+M