What is Q355GNH atmospheric corrosion resisting steel

Q355GNH atmospheric corrosion resisting steel has the characteristics of high quality steel, such as plastic drawing, welding and cutting, strength and toughness, abrasion, forming, fatigue resistance and so on; at the same time, it also has the characteristics of rust resistance, corrosion resistance and life extension.

Chemical composition of Q355GNH atmospheric corrosion resisting steel:
C: ≤0.12
S: 0.20-0.75
Mn: ≤1.00
P: 0.07-0.75
S: ≤0.020
Cu: 0.25-0.55
Cr: 0.30-1.25
Ni: ≤0.25

Mechanical properties of Q355GNH atmospheric corrosion resisting steel:
Tensile strength: ≥ 490 - 630 MPa
Yield strength: ≤ 355 MPa
Elongation: ≤ 26%

Q355GNH atmospheric corrosion resisting steel is often used to manufacture structural parts such as railway vehicles, port buildings, containers, oil production platforms, chemical and petroleum equipment and containers containing hydrogen sulfide corrosive medium in oil derrick. It can also be used to manufacture tower, railway, bridge, vehicle and other steel structures exposed to the atmosphere for a long time.