Q355GNH is weathering steel, that is, atmospheric corrosion-resistant steel. It is a low-alloy steel series between ordinary steel and stainless steel. Q355GNH weather resistant steel plate has the strength and toughness of high-quality steel, plastic extension, forming, welding and cutting, abrasion, high temperature, fatigue resistance and other characteristics.
1. Chemical composition of Q355GNH high weather resistant steel plate:
C: 0.12 Si: 0.2-0.75 Mn: 1.0 P: 0.07-0.15 S: 0.02
Cr: 0.3-1.25 Ni: 0.65 Cu: 0.25-0.55
2.The tensile yield strength of Q355GNH high weather resistant steel plate:
Tensile strength: 490-630Mpa
Yield strength: 345Mpa
Elongation: 19%
180°bending test: d=3a
3.Q355GNH high weather resistant steel plate application instructions
Q355GNH high weather resistant steel plate is mainly used for steel structures exposed to the atmosphere for a long time, such as railways, vehicles, bridges, and towers. Q355GNH high weather resistant steel plate is used to manufacture structural parts such as containers, railway vehicles, oil derricks, seaport buildings, oil production platforms, and containers containing hydrogen sulfide corrosive medium in chemical and petroleum equipment.
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