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ASME SA516 Grade 70 is a carbon steel plate used for pressure vessels and boilers, offering a tensile strength of 485-620 MPa and excellent weldability.At Gangsteel, we manufacture and export high-quality SA516 GR 70 plates, meeting ASME standards for critical applications in oil, gas, and petrochemical industries. This article details its properties, applications, and why it’s a top choice.
ASME SA516 Grade 70, also known as ASME SA 516 GR 70, is a carbon steel plate specification under the ASME Boiler and Pressure Vessel Code (BPVC). It is designed for welded pressure vessels operating at moderate and low temperatures, with superior strength and toughness. Gangsteel ensures compliance with ASME SA 516/SA 516M, delivering plates with excellent HIC resistance for sour service applications.
The chemical composition of SA516 GR 70 ensures its weldability and durability:
|
Element |
Composition (% by Weight) |
Notes |
|---|---|---|
|
Carbon (C) |
≤0.27% |
Maximum, ≤0.27% for plates ≤12.5 mm. |
|
Manganese (Mn) |
0.79 - 1.30 |
Adjustable to 1.50% with reduced carbon. |
|
Phosphorus (P) |
≤0.025 |
Enhances weldability and toughness. |
|
Sulfur (S) |
≤0.025 |
Low sulfur for HIC resistance in sour gas environments. |
|
Silicon (Si) |
0.15 - 0.40 |
Improves oxidation resistance. |
|
Aluminum (Al) |
≥0.02 |
Ensures fine-grain structure (killed steel). |
Gangsteel’s SA516 GR 70 plates are tested per NACE TM0284 for HIC, with sulfur content as low as 0.003% for critical applications.
SA516 GR 70’s mechanical properties make it ideal for high-pressure environments:
|
Property |
Value |
Notes |
|---|---|---|
|
Tensile Strength |
485 - 620 MPa (70-90 ksi) |
High strength for pressure vessels. |
|
Yield Strength (min) |
260 MPa (38 ksi) |
Ensures resistance to deformation. |
|
Elongation (min, 200 mm) |
17% |
Indicates ductility. |
|
Elongation (min, 50 mm) |
21% |
Higher ductility for shorter gauges. |
|
Charpy V-Notch |
27 J at -46°C (typical) |
Ensures toughness in low temperatures. |
These properties are verified through ASTM E8 (tension) and ASTM E23 (impact) tests, with Gangsteel providing MTCs per EN 10204 3.1.
ASME SA 516 GR 70 is widely used in:
Gangsteel offers plates from 6mm to 200mm thickness, customizable up to 300mm, with rapid global delivery.
Gangsteel ensures quality through:
ASME SA516 Grade 70 is a high-strength carbon steel plate for pressure vessels, offering excellent weldability and HIC resistance. Gangsteel’s ASME SA 516 GR 70 plates meet global standards, ensuring reliability in critical industries. Contact us for high-quality solutions.
Keywords: ASME SA516 GR 70, carbon steel plate, pressure vessel steel, HIC resistance
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