Q355NHC is a kind of weather resistant steel. Q represents the yield strength, 355 represents the lower limit of the yield strength of steel, the unit is MPa. NH is the first letter of the Chinese pinyin of the characters "Nai" and "hou" respectively. C represents the quality grade.
Q355NHC steel plate implementation standard: GB/T 4171-2008.
Chemical composition of Q355NHC weather resistant steel plate
| Grade |
C |
Si |
Mn |
P |
S |
Cu |
Cr |
Ni |
| Q355NH weather resistant steel plate |
≤0..16 |
≤0.50 |
0.50-1.50 |
≤0.030 |
- |
0.25-0.55 |
0.40-0.80 |
≤0.65 |
Q355NHC weather resistant steel plate is a steel that improves atmospheric corrosion resistance by adding a small amount of alloying elements such as Cu, P, Cr, Ni, etc. to form a protective layer on the surface of the metal substrate. Q355NH weather resistant steel plate is a welded weather resistant steel and is widely used in vehicles, bridges, containers, buildings or other structural parts. Compared with high weather resistant steel, Q355NHC weather resistant steel plate has better welding performance.
