Q355NH Weathering Steel

Q355NH is an atmospheric corrosion resistant steel plate, also known as a weathering steel plate.
Q355NH executive standard: GB\T4171-2008
"Q" is the first letter of yield pinyin.
"355" means it has a yield strength of 355MPa.
"NH" is the first letter of weather-resistant pinyin.

Q355NH delivery status: hot rolling, controlled rolling, positive, etc.

Chemical composition of Q355NH weathering steel:
C: 0.12～0.21,
Si: 0.2 to 2.0,
Mn: 0.7～2.0,
S ≤0.036,
P≤0.034,
Cu: 0.10 to 0.40

Q355NH Application:
Weathering steel is mainly used in railways, vehicles, bridges, towers and other steel structures exposed to the atmosphere for a long time. It is used in the manufacture of 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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