A516 Gr.70 vs A516 Gr.60
These two grades are listed as equivalents of each other: their chemistry windows overlap and they serve the same applications. They are not always identical — check the differences below before substituting, especially in certified designs.
A516 Gr.70
Structural & HSLA Steel
ASTM A516 Grade 70 is the most specified pressure-vessel plate in the world — the default carbon steel for ASME Section VIII vessels. Its 485–620 MPa tensile band and fine-grain, killed practice give reliable toughness and weldability across a wide thickness range.
Standards: DIN P355GH (near) · AISI A516 Gr.70 · JIS SGV480 (near) · GB Q345R (near)
A516 Gr.60
Structural & HSLA Steel
ASTM A516 Grade 60 is a carbon pressure-vessel plate specified for moderate and low-temperature service where notch toughness matters. It is the entry grade of the A516 family used for welded ASME VIII vessels and tanks.
Standards: DIN P355GH (near) · AISI A516 Gr.60 · JIS SG295/SGV410 (near) · GB Q345R (near)
Chemical composition compared (%)
| Element | A516 Gr.70 | A516 Gr.60 |
|---|---|---|
| C | ≤0.27 (≤12.5 mm) | ≤0.21 (≤12.5 mm) |
| Si | 0.15–0.40 | 0.15–0.40 |
| Mn | 0.85–1.20 | 0.60–0.90 (≤12.5 mm) |
| P | ≤0.025 | ≤0.025 |
| S | ≤0.025 | ≤0.025 |
Properties compared
| Property | A516 Gr.70 | A516 Gr.60 |
|---|---|---|
| Yield strength | ≥260 MPa | ≥220 MPa |
| Tensile strength | 485–620 MPa | 415–550 MPa |
| Density | 7.85 g/cm³ | 7.85 g/cm³ |
Sourcing either grade?
Nasteel stocks both families from Shenzhen with EN 10204 3.1 mill certificates by heat number.
Ask for a quotationSee full data sheets: A516 Gr.70 · A516 Gr.60. Substitution decisions for certified parts stay with the design authority.