ASTM A516 Gr.70 — Chemical Composition & Mechanical Properties
ASTM A516 Gr.70 is a structural & plate steel grade for pressure-vessel plate (UNS K02700, EN / W.Nr ≈ P355GH). It is also known as A516-70. This sheet summarises its chemical composition limits, minimum mechanical properties, heat treatment and typical service. Teshi Group supplies this grade as a stockist and supplier.
ASTM A516 Gr.70 at a glance
| Specification | ASTM A516 Gr.70 |
|---|---|
| Material family | Structural & plate steel |
| Product form | Pressure-vessel plate |
| UNS number | K02700 |
| EN / W.Nr equivalent | ≈ P355GH |
| Also known as | A516-70 |
| Document | TG-MG-042 · Rev. 1 · October 2026 |
Typical service
Pressure vessels, plate flanges, moderate & lower temperature
Heat treatment
As-rolled up to 40 mm; normalized above 40 mm (or when specified)
Chemical composition of ASTM A516 Gr.70 (weight %)
Single values are maximums unless shown as a range or “min”.
Mechanical properties
| Tensile strength, min | 485 MPa |
|---|---|
| Yield strength, min | 260 MPa |
| Elongation, min | 21 % |
| Hardness | Not specified |
About structural & plate steel
Structural steels such as IS 2062 and ASTM A36 are carbon–manganese steels for beams, columns, plates and fabricated structures, specified mainly by yield strength and weldability (carbon equivalent).
Reference information compiled from the published standard for convenience. It does not replace the current edition of the governing standard, which takes precedence. Verify critical dimensions and properties before design, purchase or fabrication. Teshi Engineers & Sales Promoters (P) Ltd accepts no liability for errors or omissions.
International equivalents of ASTM A516 Gr.70
All equivalents| Standard system | Nearest equivalent grade |
|---|---|
| USA — ASTM / ASME | ASTM A516 Gr.70 · ASME SA-516 Gr.70 |
| USA — UNS | K02700 |
| Europe — EN designation | P355GH (EN 10028-2) |
| Europe — W.Nr | 1.0473 |
| Japan — JIS | SGV480 / SPV355 (JIS G3118 / G3115) |
| China — GB / NB | Q345R (GB/T 713.2) |
| China — old GB designation | 16MnR |
| India — IS | IS 2002 Gr 2B |
| UK — BS (withdrawn) | BS 1501-224-490 |
Equivalents are the nearest commonly cited grades. Chemistry, mechanical properties and testing differ between standards — compare them before substituting one for another.
Other structural & plate steel grades
Structural & plate steel overviewStandards for ASTM A516 Gr.70
All material standardsFAQ
ASTM A516 Gr.70: common questions
What is the minimum yield strength of ASTM A516 Gr.70?
260 MPa, with a minimum tensile strength of 485 MPa.
What is the carbon content of ASTM A516 Gr.70?
0.27 max (≤12.5 mm) to 0.31 max (>100 mm) %.
What is the UNS number and EN equivalent of ASTM A516 Gr.70?
UNS K02700; the nearest European designation is W.Nr ≈ P355GH. Equivalents are close but not identical — check the specification if substituting.
How is ASTM A516 Gr.70 heat treated?
As-rolled up to 40 mm; normalized above 40 mm (or when specified).
What is the Chinese (GB) equivalent of ASTM A516 Gr.70?
The nearest Chinese equivalent is Q345R (GB/T 713.2), formerly 16MnR. Equivalents are close but not identical — compare chemistry and properties before substituting.
What is the JIS equivalent of ASTM A516 Gr.70?
The nearest Japanese (JIS) equivalent is SGV480 / SPV355 (JIS G3118 / G3115).
Does Teshi Group supply ASTM A516 Gr.70?
Teshi Group supplies this grade as a stockist and supplier. Send your size, rating and quantity to info@teshigroup.com for a quotation with EN 10204 3.1 certificates.
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