Products Description
ASME SA709 Grade HPS 50W (High-Performance Steel) is a high-strength, low-alloy structural steel specifically designed for bridge construction, heavy engineering structures, and critical infrastructure projects.
It is part of the HPS series, developed to provide superior toughness, weldability, and corrosion resistance, especially suitable for extreme environments and heavy-duty load-bearing applications.
Key Features
High Strength:
Minimum Yield Strength: 345 MPa
Tensile Strength: 485–655 MPa
The high strength allows engineers to reduce structural weight while maintaining safety and load-bearing capacity.
Excellent Toughness:
Charpy V-notch Impact Energy: ≥27 J at 20°C, and some grades maintain good impact toughness even at sub-zero temperatures, ensuring safety in cold climates.
Superior Weldability:
Designed for MIG, TIG, and arc welding, enabling complex structural assemblies without compromising mechanical properties.
Improved Corrosion Resistance:
The HPS series features a balanced chemical composition that enhances atmospheric corrosion resistance, reducing the need for frequent maintenance and coating.
Good Fabrication Performance:
Suitable for cutting, drilling, bending, and cold forming, offering flexibility for bridge decks, beams, and heavy structural components.
Typical Chemical Composition (%)
| Element | Typical Range |
|---|---|
| Carbon (C) | 0.12–0.18 |
| Manganese (Mn) | 1.0–1.5 |
| Silicon (Si) | 0.15–0.40 |
| Phosphorus (P) | ≤0.025 |
| Sulfur (S) | ≤0.025 |
| Nickel (Ni) | ≤0.40 |
| Chromium (Cr) | ≤0.30 |
| Molybdenum (Mo) | ≤0.15 |
| Copper (Cu) | ≤0.25 |
Mechanical Properties
| Property | Value / Range |
|---|---|
| Yield Strength | ≥345 MPa |
| Tensile Strength | 485–655 MPa |
| Elongation | ≥20% |
| Impact Toughness | ≥27 J at 20°C |
| Hardness (Brinell) | 145–187 HB |
Advantages of HPS 50W Steel Plates
Allows lighter structural design without compromising strength.
Maintains high impact toughness at low temperatures, improving safety in extreme environments.
Excellent weldability and fabrication performance, reducing construction costs and time.
Durable and corrosion-resistant, ideal for long-term outdoor exposure.
