Q550NH steel is a type of weather-resistant steel that is designed to resist atmospheric corrosion and provide high strength and good toughness. It is used in various applications such as bridges, buildings, and other structures that are exposed to harsh weather conditions.
The steel contains alloy elements such as copper, nickel, chromium, and phosphorus, which contribute to its corrosion resistance properties. The presence of these elements forms a protective layer on the surface of the steel when exposed to the atmosphere, which helps to prevent further corrosion.
Q550NH steel has a minimum yield strength of 550 MPa and a minimum tensile strength of 620 MPa, making it a strong and durable material for structural applications. It is typically supplied in a normalized or controlled rolled condition, which improves its toughness and ductility.
In addition to its use in structural applications, Q550NH steel is also used in the manufacture of containers, railway rolling stock, and other outdoor equipment that requires high strength and good corrosion resistance.
Mechnical property for Q550NH corten steel
| Thickness (mm) | ||||
| Q550NH | ≤ 16 | > 16 ≤ 40 | > 40 ≤ 60 | >60 |
| Yield strength (≥Mpa) | 550 | 540 | 530 | 530 |
| Tensile strength (Mpa) | 620-780 | |||
| Main chemical elements composition of Q550NH | |||||||
| C | Si | Mn | P | S | Cu | Ni | Cr |
| 0.16 | 0.65 | 2.00 | 0.025 | 0.030 | 0.20-0.55 | 0.12-0.65 | 0.30-1.25 |
