ASTM A500 Grade B is a specification for cold-formed welded and seamless carbon steel structural tubing. It is widely used for structural applications such as building frames, bridges, and various other construction projects. The "Grade B" designation refers to a specific material grade that is required to meet certain mechanical properties.
For ASTM A500 Grade B ERW (Electric Resistance Welded) carbon steel pipe, here are some of the key characteristics:
- Material Properties
Yield Strength: Minimum of 46,000 psi (315 MPa)
Tensile Strength: 58,000 to 70,000 psi (400 to 485 MPa)
Elongation: 20% minimum in 8 in. (200 mm) or 25% in 2 in. (50 mm)
- Dimensions
Outer Diameter (OD): 0.5 to 12 inches (12.7 to 304.8 mm)
Wall Thickness: 0.083 to 0.500 inches (2.1 to 12.7 mm), depending on the diameter
- Applications
Construction: As a framing material for buildings, bridges, and structures.
Pipelines: In low-pressure applications for water or gas transportation.
Furniture and Railing: Used in various furniture manufacturing and for railings due to its combination of strength and ease of fabrication.
Mechanical: For applications requiring good tensile strength and ductility.
- Benefits of ERW Process
Cost-Effective: The ERW process is a more economical method compared to other welding techniques.
Uniformity: Provides a more uniform wall thickness and can be used for larger diameters, making it suitable for structural projects.
High Strength: The welding process and material properties ensure the pipe retains high strength for structural integrity.