ASTM A588 Grade B is a high-strength low-alloy structural steel with the following composition and properties:
| Element | Percentage |
|---|---|
| C | 0.20% max |
| Si | 0.15-0.50% |
| Mn | 0.75-1.35% |
| P | 0.04% max |
| S | 0.05% max |
| Cu | 0.20-0.40% |
| Cr | 0.40-0.70% |
| Ni | 0.50% max |
| V | 0.01-0.10% |
Mechanical Properties:
| Property | Value |
|---|---|
| Yield Strength (min) | 345 MPa (50 ksi) |
| Tensile Strength | 485 MPa (70 ksi) min |
| Elongation in 50mm (2″) | 21% min |
ASTM A588 Grade B steel is commonly used in:
Its high strength and corrosion resistance make it ideal for structures exposed to atmospheric conditions.
ASTM A588 Grade B exhibits superior corrosion resistance compared to regular carbon steel. It forms a protective oxide film (patina) that slows down further corrosion, making it suitable for unpainted applications. The atmospheric corrosion resistance index (ASTM G101) must be ≥6.0.
ASTM A588 Grade B steel is typically produced through hot rolling. Available dimensions may vary, but common ranges include:
| Product Type | Thickness (mm) | Width (mm) | Length (mm) |
|---|---|---|---|
| Plate | 4.78 – 12.7 | 1800 – 2400 | 6100 – 18300 |
| Plate | 6.35 – 50.80 | 1800 – 3050 | 6100 – 25910 |
| Plate | 51.1 – 124 | 1800 – 3350 | 6100 – 25910 |
| Grade | Yield Strength (min) | Corrosion Resistance |
|---|---|---|
| A588 Grade B | 345 MPa (50 ksi) | Excellent |
| A588 Grade A | 345 MPa (50 ksi) | Very Good |
| A36 | 250 MPa (36 ksi) | Standard |
ASTM A588 Grade B offers higher strength and is used in applications requiring better mechanical properties compared to Grade A.
ASTM A588 Grade B can be welded using standard welding techniques. However, care should be taken to maintain its corrosion-resistant properties in the heat-affected zones. It has good formability for deep drawing applications.
At HL Steel Company, we offer high-quality ASTM A588 Grade B steel coils tailored for various construction and 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
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