ASTM A709 Grade HPS70W is a high-performance steel with the following properties:
| Property | Value |
|---|---|
| Yield Strength (min) | 485 MPa (70 ksi) |
| Tensile Strength | 585-760 MPa (85-110 ksi) |
| Elongation in 200mm (min) | 19% |
HPS70W is primarily used in bridge construction, offering several advantages:
For example, the Ford City Bridge in Pennsylvania used HPS70W in negative moment regions, resulting in a 20% reduction in steel weight.
HPS70W is produced by quenching and tempering (Q&T) or Thermal-Mechanical Controlled Processing (TMCP).
Available dimensions:
| Process | Thickness | Length | Width |
|---|---|---|---|
| Q&T | Up to 4 inches (100 mm) | Up to 50 ft (15.2 m) | 72-120 inches (1830-3050 mm) |
| TMCP | Up to 2 inches (50 mm) | Up to 125 ft (38 m) | 72-120 inches (1830-3050 mm) |
| Grade | Yield Strength (min) | Tensile Strength (min) | Corrosion Resistance |
|---|---|---|---|
| 50W | 345 MPa (50 ksi) | 485 MPa (70 ksi) | Improved |
| HPS50W | 345 MPa (50 ksi) | 485 MPa (70 ksi) | Enhanced |
| HPS70W | 485 MPa (70 ksi) | 585 MPa (85 ksi) | High Performance |
HPS70W offers improved weldability compared to conventional steels. It can be welded using standard procedures without preheating or post-weld heat treatment in most applications.
Despite a higher initial cost (approximately 30% more than 50-ksi material), the use of HPS70W can lead to significant weight savings. For example, a project by the Missouri Department of Transportation achieved a 17% reduction in superstructure steel weight, resulting in an overall steel cost savings of 11%.
At HL Steel Company, we offer high-quality ASTM A709 Grade HPS70W steel coils tailored for bridge construction and other structural applications, ensuring optimal performance and durability for your projects.
121, Building 114, Jiangsu Street, Wuzhou International Industrial Expo City, Xinwu District, Wuxi City,Jiangsu Province,China
Building 114, Jiangsu Street, Wuzhou International Industrial Expo City, Xinwu District, Wuxi City
We will contact you within 1 working day, please pay attention to the email with the suffix “[email protected]”.