ASTM A516 Grade 70: Pressure Vessel Carbon Steel Plate
ASTM A516/A516M · Published: 2026-06-03 · Updated: 2026-06-03
ASTM A516 Grade 70 is the most widely specified carbon steel for pressure vessels and boilers. It offers excellent notch toughness at low temperatures and is qualified for service from -45°C to 425°C depending on impact test requirements.
ASTM A516 Grade 70 is the most widely specified carbon steel for pressure vessels and boilers. It offers excellent notch toughness at low temperatures and is qualified for service from -45°C to 425°C depending on impact test requirements.
Quick Facts
| Category | Carbon Steel |
| Standard | ASTM A516/A516M |
| Density | 7.85 g/cm³ |
| Yield Strength | 260 MPa (38 ksi) |
| Tensile Strength | 485-620 MPa (70-90 ksi) |
Global Equivalents & Cross-Reference
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Frequently Asked Questions
What makes A516 Gr 70 different from A36?
A516 Gr 70 undergoes stricter chemistry control (particularly for carbon, manganese, and silicon) and mandatory fine-grain practice. It is tested for notch toughness (Charpy V-notch) at specified temperatures, which A36 is not. A516 is exclusively used for pressure-containing applications.
References & International Standards
- ASTM International. Standard Specifications for Steel & Metal Alloys. astm.org
- International Organization for Standardization (ISO). Metallic Materials — Cross-Reference Database. iso.org
- American Iron and Steel Institute (AISI). Steel Grade Designations & Equivalents. steel.org
- European Committee for Standardization (CEN). EN Steel Standards & Numbering System. cencenelec.eu