Chinese-made American standard steel plate grades ASTM A516 Grade 70(ASME SA516GR70) Chemical composition of pressure vessel plates&Mechanical properties
This designation originates from P355GH or P355NH under the EN standard.
A516Gr70 is equivalent to A516Gr485. 70 refers to the grade of the A516 series, while 485 is distinguished by tensile strength.
ASME uses the standards of the American Society of Mechanical Engineers, while ASTM uses the standards of the American Society of Materials Engineers. There is no essential difference between the two.
ASTM A516 Grade 70 Approaching Steel Plate Grade Lookup Table
| Grade | SA516Gr70 Chemical composition | SA516G70 Mechanical properties | Remark | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||
|
C ① ② Thickness(mm) |
Mn ② Thickness(mm) |
Si | S ① | P ① | Ni | … | ReH ③ | Rm | KV₂ | A% Gauge length 50mm ④ | A% Gauge length 200mm ④ | |||||||||||||||||||||||||||||||||||||||||||||||||
| ASTM A516 Grade70 | ≤12.5mm | 12.5-50mm | 50-100mm | 100-200mm | ＞200mm | ≤ 12.5mm | >12.5mm |
SA 0.15~0.40 |
FA 0.13~0.45 |
≤0.025 | ≤0.025 | ≥260 | 485~620 | ≥21 | ≥17 | |||||||||||||||||||||||||||||||||||||||||||||
| ≤0.27 | ≤0.28 | ≤0.30 | ≤0.31 | ≤0.31 |
SA 0.85~1.20 |
FA 0.79~1.30 |
SA 0.85~1.2 |
FA 0.79~1.30 |
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Notes:
Smelting Analysis=SA
Finished Product Analysis=FA
①:Applicable to both smelting analysis and finished product analysis.
②:For every 0.01% decrease below the specified maximum carbon content, the upper limit of the specified maximum manganese content can be increased by 0.06%, with a maximum allowable limit of 1.50% for smelting analysis and a maximum allowable limit of 1.60% for finished product analysis.
③:Determined by the 0.2% residual deformation method or the 0.5% elongation under load.
④:For corrections regarding elongation, see standard A-20/A20M.