What is A252 grade 3 steel pipe material?

ASTM A252 grade 3 steel pipe is a type of steel material used specifically for steel pipe piles, which are structural components designed to support heavy loads in construction and civil engineering applications. Among the three grades specified under the ASTM A252 standard, A252 grade 3 steel pipe is the strongest and most commonly used due to its high yield and tensile strength.

Key Characteristics of A252 grade 3 steel pipe Material
A252 grade 3 steel pipeMechanical Properties:
Yield Strength (minimum): 45,000 psi (310 MPa).
Tensile Strength (minimum): 66,000 psi (455 MPa).
A252 grade 3 steel pipe elongation: At least 20% in 2 inches (50.8 mm) for seamless or welded pipes. Varies slightly based on pipe wall thickness and diameter.

A252 grade 3 steel pipe Chemical Composition:
ASTM A252 does not strictly define chemical composition but ensures the material meets the required mechanical properties. Typical composition includes:
Carbon (C): Approximately 0.20%–0.26%.
Manganese (Mn): Approximately 1.0%–1.6%.
Phosphorus (P): ≤ 0.05%.
Sulfur (S): ≤ 0.045%.
Trace amounts of silicon (Si) and other elements to enhance strength and weldability.

A252 grade 3 steel pipe manufacturing process:
Can be produced as seamless or welded pipes.
Welding methods include Electric Resistance Welding (ERW), Submerged Arc Welding (SAW), or Longitudinally Submerged Arc Welding (LSAW).
A252 grade 3 steel pipe Surface Finish:
Pipes are supplied with a plain or beveled end finish.
Must be free from defects like cracks, seams, or laminations that could impair structural performance.

A252 grade 3 steel pipe dimensional specifications: Outer Diameter (OD): Commonly ranges from 6 inches to 120 inches. Wall Thickness: Typically varies from 0.188 inches to 2 inches, depending on the project.Length: Available in fixed or random lengths as required.