The difference between Q355GNH high corten steel plate and Q355NH corten steel plate

Chemical composition of Q355GNH high corten steel plate:
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
Chemical composition of Q355NH weathering steel
C: ≤0.16 Si: ≤0.50 Mn: 0.50~1.50 P: ≤0.030 S: ≤0.030 Mo: ≤0.30 Cu: 0.25~0.55 Ti: ≤0.10 V: ≤0.12 Nb: ≤0.06 Cr: 0.40~0.80
Mechanical properties of Q355GNH high corten steel plate:
Tensile strength: ≥490~630Mpa Yield strength: ≤355 Growth rate: ≤26
Q355NH mechanical properties
Tensile strength: ≥516~670Mpa Yield point: ≥355
Q355NH is a corten steel plate, and Q355GNH is a corten steel plate. They both belong to the low-alloy series and are rust-resistant. They can resist corrosion and extend the life of components, reduce thickness and reduce consumption, and save labor and energy.
In terms of performance and price, Q355GNH has better performance and ingredients than Q355NH, and the price is also higher.
Corten steel plate is often used to manufacture structural parts such as railway vehicles, seaport buildings, containers, oil production platforms, chemical and petroleum equipment, and containers containing hydrogen sulfide corrosive media in oil derricks. It can also be used to manufacture steel structures such as towers, railways, bridges, vehicles, etc. that are exposed to the atmosphere for a long time.