ASTM A516 Grade 70 Steel Plate Data Sheet

What is ASTM A516 Grade 70 Steel Plate Data Sheet?

As a trusted manufacturer and exporter of pressure vessel and boiler steel plates, Gangsteel delivers premium ASTM A516 GR 70 steel plates engineered for high-pressure and low-temperature applications. This data sheet provides a comprehensive overview of the chemical composition, mechanical properties, and applications of ASTM A516 GR 70, ensuring engineers, fabricators, and procurement specialists have the technical details needed for material selection in industries such as oil and gas, petrochemical, and power generation.

Chemical Composition

ASTM A516 GR 70 is a carbon steel plate designed for excellent weldability and toughness, particularly in normalized conditions. The chemical composition, as specified by ASTM standards, is tightly controlled to ensure performance in pressure vessel applications. The following table outlines the key elements:

Key Notes:

• Carbon: Capped at 0.27% to maintain weldability and prevent excessive hardness.
• Manganese: Enhances strength and toughness, critical for high-pressure environments.
• Phosphorus and Sulfur: Low levels minimize brittleness and improve notch toughness.
• Silicon and Aluminum: Ensure the steel is fully killed, reducing gas inclusions and enhancing mechanical properties.

Gangsteel’s ASTM A516 GR 70 plates comply with both ASTM and ASME SA516 GR 70 standards, with additional testing available to verify chemical consistency.

Mechanical Properties

The mechanical properties of ASTM A516 GR 70 make it ideal for pressure vessels and boilers operating under moderate to low temperatures. Its normalized condition enhances toughness and resistance to thermal stress. The following table summarizes the mechanical properties:

Highlights:

• Tensile Strength: 485–620 MPa ensures durability in high-pressure applications.
• Yield Strength: Minimum 260 MPa supports structural integrity in demanding conditions.
• Elongation: 17–21% ductility facilitates forming and fabrication without cracking.
• Impact Toughness: Excellent performance at low temperatures (down to -46°C), ideal for cryogenic applications.

Compared to ASTM A516 GR 65 and ASTM A516 GR 60, ASTM A516 GR 70 offers superior strength, making it suitable for more robust pressure vessel designs while retaining excellent weldability.

Physical Properties

These properties ensure ASTM A516 GR 70 performs reliably in high-temperature and high-pressure environments, with good thermal stability for boiler applications.

Applications

ASTM A516 GR 70 is a versatile material widely used in:

• Pressure Vessels: For oil, gas, and chemical processing, due to its high strength and low-temperature toughness.
• Boilers: In power generation, where thermal stability and weldability are critical.
• Cryogenic Equipment: Suitable for LNG storage and other low-temperature applications.
• Fabrication: Its formability supports complex assemblies in industrial equipment.

Gangsteel’s ASME SA516 GR 70 plates are manufactured to meet ASME standards, ensuring compliance for boiler and pressure vessel applications worldwide.

Comparison with Other Grades

To aid material selection, the following table compares ASTM A516 GR 70 with related grades:

For detailed insights into global equivalents, such as EN P355GH, refer to Gangsteel’s guide on ASME SA516 GR 70 Equivalent Grade.

Weldability and Processing

ASTM A516 GR 70 is fully killed carbon steel, ensuring excellent weldability with standard welding processes like SMAW, GTAW, and SAW. Its low carbon content minimizes the risk of weld imperfections, while normalization enhances grain structure for improved toughness. Gangsteel provides plates in hot-rolled, normalized, or clad forms to meet specific fabrication needs.

Why Choose Gangsteel?

Gangsteel is a global leader in supplying ASTM A516 GR 70 and ASME SA516 GR 70 plates, offering:

• Certified Quality: Plates undergo ultrasonic testing, Charpy impact tests, and chemical analysis to meet ASTM/ASME standards.
• Customization: Available in various thicknesses and finishes (hot-rolled, normalized, or clad).
• Global Reach: Competitive pricing and reliable delivery for industries worldwide.
• Expert Support: Guidance on selecting ASTM A516 GR 70 versus ASTM A516 GR 65, ASTM A516 GR 60, or ASTM A516 GR 55.

Conclusion

ASTM A516 GR 70 is a high-performance carbon steel plate optimized for pressure vessels and boilers, offering excellent strength, toughness, and weldability. Its precise chemical composition and robust mechanical properties make it a top choice for demanding applications. Gangsteel’s commitment to quality ensures our ASME SA516 GR 70 plates meet global standards, delivering reliability for your projects. For more on equivalent standards, explore our ASME SA516 GR 70 Equivalent Grade guide.