A516 Gr.70
Data verifiedASTM 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.
Chemical composition
| Element | Content (%) |
|---|---|
| C | ≤0.27 (≤12.5 mm) |
| Si | 0.15–0.40 |
| Mn | 0.85–1.20 |
| P | ≤0.025 |
| S | ≤0.025 |
Weight percent, per the governing standard ranges. Actual values per heat are on the mill certificate.
Properties
| Yield strength | ≥260 MPa |
| Tensile strength | 485–620 MPa |
| Density | 7.85 g/cm³ |
Heat treatment
Supplied as-rolled or normalized; normalized condition is standard for thicker and low-temperature orders.
Equivalent grades
| Standard | Designation |
|---|---|
| din | P355GH (near) |
| aisi | A516 Gr.70 |
| jis | SGV480 (near) |
| gb | Q345R (near) |
Compare side by side: A516 Gr.70 vs A516 Gr.60 · A516 Gr.70 vs P355GH · A516 Gr.70 vs Q345R
Equivalents overlap in chemistry and use but are not always identical — see our equivalents guide before substituting in certified designs.
Applications & Processing
Applications: Pressure vessels, boilers, storage tanks, heat exchanger shells, LPG bullets.
Processing: Excellent weldability with standard vessel procedures; PWHT per code when thickness or service requires it.
FAQ
- A516 Gr.70 vs P355GH?
- Same duty and similar strength (P355GH yields higher at ≥355 MPa vs 260 MPa, tensile bands overlap). A516 is the ASME/ASTM route, P355GH the EN 10028/PED route — certificates are not automatically interchangeable on coded work.
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Ask for a quotationVisit NasteelSource: ASTM A516 published ranges · Last updated 2026-11-03. Data is indicative — verify critical values against the governing standard and mill certificate before use.