Q235NH Atmospheric Corrosion Resistant Steel

Q235NH belongs to weather-resistant structural steel and atmospheric corrosion-resistant steel plate.

Q235NH executive standard: GB\T4171-2008
"Q" is the first letter of yield pinyin.
"235" means that its yield strength is 235MPa.
"NH" is the first letter of weather-resistant pinyin.

Q235NH delivery status: hot rolling, controlled rolling, normalizing, etc.

Q235NH smelting method: steel is smelted by converter or electric furnace, and it is killed steel.

Chemical composition of Q235NH weathering board:
Q235NH grade contains
C:≤0.13
Mn:0.20-0.60
Si:≤0.10-0.40
S:≤0.030
P:≤0.030
Cu: 0.25-0.55
Cr:0.40-0.80
Ni:≤0.65

Mechanical properties of Q235NH weathering board:
Tensile strength (σb/MPa): 360-510
Yield strength Thickness≤16MM≥235
>16-40mm≥225
>40-60mm≥215
>60mm≥215
Elongation (δ5/%):
16mm ≥25
16-40mm ≥25
40-60mm ≥24
60-100mm ≥23

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