ASTM A588 Grade K is a high-strength low-alloy structural steel with the following composition and properties:
| Element | Percentage |
|---|---|
| C | 0.17% max |
| Si | 0.25-0.50% |
| Mn | 0.50-1.20% |
| P | 0.04% max |
| S | 0.05% max |
| Cu | 0.30-0.50% |
| Cr | 0.40-0.70% |
| Ni | 0.40% max |
| Nb | 0.005-0.05% |
Mechanical Properties:
| Property | Value |
|---|---|
| Yield Strength (min) | 345 MPa (50 ksi) |
| Tensile Strength | 485 MPa (70 ksi) min |
| Elongation in 50 mm (2″) | 21% min |
| Brinell Hardness | 170 |
ASTM A588 Grade K steel is commonly used in:
Its high strength and corrosion resistance make it ideal for structures exposed to atmospheric conditions.
ASTM A588 Grade K 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 is up to four times better than that of carbon steel.
ASTM A588 Grade K steel is typically produced through hot rolling. Available dimensions may vary by manufacturer, but common ranges include:
| Thickness | Width | Length |
|---|---|---|
| 6 mm to 200 mm | 1500 mm to 4050 mm | 3000 mm to 15000 mm |
| Grade | Yield Strength (min) | Corrosion Resistance |
|---|---|---|
| A588 Grade K | 345 MPa (50 ksi) | Excellent |
| A588 Grade A | 345 MPa (50 ksi) | Very Good |
| A36 | 250 MPa (36 ksi) | Standard |
ASTM A588 Grade K 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 K 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
We will contact you within 1 working day, please pay attention to the email with the suffix “[email protected]”.
