Products Description
A516 GR 70 complies with ASME SA-516/SA-516M and ASTM A516/A516M standards. It offers high strength and good toughness, maintaining superior impact toughness particularly in medium-to-low temperature environments to effectively prevent brittle fracture, while also exhibiting excellent weldability.
S355JR complies with European standard EN 10025-2:2004. In its designation, "S" denotes structural steel, '355' indicates a minimum yield strength of 355 MPa, and "JR" signifies a room-temperature impact energy of 27 J (at 20°C). The chemical composition of this steel strictly controls the content of elements such as carbon, manganese, phosphorus, and sulfur. The carbon equivalent typically does not exceed 0.40%, ensuring excellent weldability and formability.
Differences Between A516 GR 70 and S355JR
Standards Compliance
- A516 GR 70: Complies with American ASTM and ASME standards, specifically ASTM A516/A516M specifications.
- S355JR: Complies with European standard EN 10025-2:2004. The corresponding grade in China's national standard GB/T 1591-2018 is Q355B.
Chemical Composition
- A516 GR 70: Carbon (C) ≤0.30%, Silicon (Si) 0.13%-0.45%, Manganese (Mn) 0.79%-1.30%, Phosphorus (P) ≤0.035%, Sulfur (S) ≤0.035%.
- S355JR: Carbon (C) content is typically around 0.12%-0.20%, Manganese (Mn) content around 1.00%-1.60%, Silicon (Si) content around 0.15%-0.50%, Phosphorus (P) ≤0.035%, Sulfur (S) ≤0.035%.
Mechanical Properties
- Yield Strength: A516 GR 70 has a yield strength ≥380MPa. S355JR's yield strength is ≥355MPa for thickness ≤16mm, decreasing with thickness: ≥345MPa for 16-40mm, and ≥335MPa for 40-63mm.
- Tensile Strength: A516 GR 70 has a tensile strength of 485–620 MPa. S355JR has a tensile strength of 510–680 MPa.
- Impact toughness: A516 GR 70 exhibits excellent low-temperature toughness, with a transverse Charpy V-notch impact energy ≥34J at -30°C. S355JR achieves an impact energy (KV2) ≥27J at room temperature (20°C).
Applications of A516 GR 70 and S355JR
A516 GR 70
Petrochemical Industry: Used for manufacturing core pressure equipment such as liquefied petroleum gas (LPG) storage tanks, propylene storage tanks, petrochemical reactors, and distillation columns.
Energy and Power Industry: Serves as the primary material for boiler drums, heat exchanger shells, and pressure pipelines in power plants.
Other Pressure Equipment: Such as cryogenic storage tanks and pressure vessels for gas separation equipment, particularly suitable for operating temperatures ranging from -30°C to 450°C.
S355JR
Construction and Infrastructure: Used for large-scale industrial plant steel structures, bridge main girders and supports, high-rise building steel frames, and tower crane towers.
Machinery Manufacturing: Manufactures bases for heavy machinery, machine tool beds, crane booms, and structural components for construction equipment.
Transportation: Serves as structural components for ship hulls, frames and underframes for railway freight cars, and load-bearing chassis parts for heavy-duty vehicles.
Yuxin (Tianjin) International Trade Co., Ltd. is a steel agent. The main business of our company is: medium and thick plates, ductile cast iron pipe, seamless pipes, deformed bars, etc. of Angang, Hangang, Wugang, Nangang, Shagang and other steel plants, as well as a variety of steel related products. If you want to know more about our products, please feel free to send us an email! info@chinasteelcompany.com
