ASTM A500
Basic Info
The ASTM A500 standard specifies the standard specifications for cold formed welded and seamless carbon steel structural pipes. These pipes are suitable for use in buildings, bridges, and other structures, and have good processability and mechanical properties. This standard covers the chemical composition, mechanical properties, and dimensional requirements of pipes, ensuring stable performance and quality of products in various engineering applications.
Characteristics
High Strength: ASTM A500 steel exhibits high strength, making it suitable for structural applications where strength and load-bearing capacity are essential. It is commonly used in construction projects requiring sturdy and durable structural components.
Excellent Weldability: ASTM A500 steel has excellent weldability, allowing for easy fabrication and assembly without compromising its structural integrity. This characteristic makes it ideal for welding processes such as arc welding, MIG welding, and TIG welding, enabling seamless integration into various structural configurations.
Good Formability: ASTM A500 steel possesses good formability, allowing it to be shaped and manipulated into desired forms and dimensions during the manufacturing process. This formability makes it versatile for creating structural tubing in round, square, and rectangular shapes to meet specific design requirements.
Corrosion Resistance: While ASTM A500 steel is not specifically designed for corrosion resistance like some other alloys, it does offer adequate resistance to atmospheric corrosion. Proper coating or painting can further enhance its resistance to rust and corrosion, ensuring long-term durability and performance in outdoor and exposed environments.
ASTM A500 Data Sheet
Dimensions and Tolerances
Equivalent Steel Grades
Chemical Composition
Mechanical Properties
Fabrication and Welding
ASTM A500 Grade B vs. Grade C
Dimensions and Tolerances
Round Tubing
- Dimensions: OD x WT (Outside Diameter x Wall Thickness)
- Common Sizes (inches): 1/2″ to 12″
Square Tubing
- Dimensions: OD x OD (Outside Diameter x Outside Diameter)
- Common Sizes (inches): 1/2″ to 16″ on each side
Rectangular Tubing
- Dimensions: OD x OD (Outside Diameter x Outside Diameter)
- Common Sizes (inches): 1/2″ x 1″ to 12″ x 20″
Equivalent Steel Grades
United States
- Equivalent Grades: AISI 1010, 1015, 1020
- Standard: ASTM A500/A500M
China
- Equivalent Grades: Q195, Q215, Q235
- Standard: GB/T 6728
Japan
- Equivalent Grades: SS330, SS400, SS490
- Standard: JIS G3466
European Union
- Equivalent Grades: S185, S235, S275
- Standard: EN 10219-1.EN 10219-2
Chemical Composition
Carbon (C)
- Grade A (%): 0.26 max
Manganese (Mn)
- Grade A (%): 1.35 max
Phosphorus (P)
- Grade A (%): 0.035 max
Sulfur (S)
- Grade A (%): 0.035 max
Mechanical Properties
Tensile Strength, min, psi (MPa)
- Grade A: 45,000 (310)
- Grade B: 58,000 (400)
Yield Strength, min, psi (MPa)
- Grade A: 39,000 (270)
- Grade B: 46,000 (320)
Elongation in 2 inches (50 mm), min, %
- Grade A: 25
- Grade B: 23
Elongation in 8 inches (200 mm), min, %
- Grade A: Not applicable
- Grade B: 21
Fabrication and Welding
Weldability
- Grade A: Excellent
- Grade B: Excellent
Machinability
- Grade A: Good
- Grade B: Good
Formability
- Grade A: Good
- Grade B: Good
Hot Working
- Grade A: Not applicable
- Grade B: Not applicable
Cold Working
- Grade A: Good
- Grade B: Good
Heat Treatment
- Grade A: Not applicable
- Grade B: Not applicable
Annealing
- Grade A: Not applicable
- Grade B: Not applicable
Hardening
- Grade A: Not applicable
- Grade B: Not applicable
Stress Relieving
- Grade A: Not applicable
- Grade B: Not applicable
Cutting
- Grade A: Can be cut easily with standard cutting tools
- Grade B: Can be cut easily with standard cutting tools
Bending
- Grade A: Can be easily bent
- Grade B: Can be easily bent
Punching
- Grade A: Can be punched easily
- Grade B: Can be punched easily
Drilling
- Grade A: Can be drilled easily
- Grade B: Can be drilled easily
Sawing
- Grade A: Can be sawed easily
- Grade B: Can be sawed easily
Welding Processes
- Grade A: Suitable for various welding processes including arc welding, MIG welding, and TIG welding
- Grade B: Suitable for various welding processes including arc welding, MIG welding, and TIG welding
Preheating
- Grade A: Not required
- Grade B: Not required
Interpass Temperature
- Grade A: Not applicable
- Grade B: Not applicable
Post-weld Heat Treatment (PWHT)
- Grade A: Not required
- Grade B: Not required
Precautions
- Grade A: Ensure proper fit-up and alignment before welding
- Grade B: Ensure proper fit-up and alignment before welding
ASTM A500 Grade B vs. Grade C
Chemical Composition
- ASTM A500 Grade B:
Carbon (C): 0.26% max
Manganese (Mn): 1.35% max
Phosphorus (P): 0.04% max
Sulfur (S): 0.05% max
- ASTM A500 Grade C:
Carbon (C): 0.23% max
Manganese (Mn): 1.35% max
Phosphorus (P): 0.04% max
Sulfur (S): 0.05% max
Mechanical Properties
- ASTM A500 Grade B:
Tensile Strength: 400 MPa (58 ksi) min
Yield Strength: 290 MPa (42 ksi) min
Elongation: 23% min in 2 inches
- ASTM A500 Grade C:
Tensile Strength: 427 MPa (62 ksi) min
Yield Strength: 317 MPa (46 ksi) min
Elongation: 21% min in 2 inches
Manufacturing Standards
- ASTM A500 Grade B:
Manufactured according to ASTM A500/A500M standard, which covers cold-formed welded and seamless carbon steel structural tubing in round, square, and rectangular shapes.
- ASTM A500 Grade C:
Manufactured according to ASTM A500/A500M standard, which covers cold-formed welded and seamless carbon steel structural tubing in round, square, and rectangular shapes.
Applications
- ASTM A500 Grade B:
Commonly used in structural applications such as building construction, bridges, highways, and machinery frames where higher strength is required.
- ASTM A500 Grade C:
Suitable for structural applications similar to Grade B but is often used in applications where enhanced ductility and formability are desired.
