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:
|
Element |
Composition (% by weight) |
|---|---|
|
Carbon (C) |
0.27 max |
|
Manganese (Mn) |
0.85–1.20 |
|
Phosphorus (P) |
0.035 max |
|
Sulfur (S) |
0.035 max |
|
Silicon (Si) |
0.15–0.40 |
|
Aluminum (Al) |
0.02 min (for killed steel) |
|
Iron (Fe) |
Balance |
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.
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