| A516 Grade 70 Chemical Composition | |||||
| Grade | The Element Max (%) | ||||
| C | Si | Mn | P | S | |
| A516 grade 70 | |||||
| Thick <12.5mm | 0.27 | 0.13-0.45 | 0.79-1.30 | 0.035 | 0.035 |
| Thick12.5-50mm | 0.28 | 0.13-0.45 | 0.79-1.30 | 0.035 | 0.035 |
| Thick50-100mm | 0.30 | 0.13-0.45 | 0.79-1.30 | 0.035 | 0.035 |
| Thick100-200mm | 0.31 | 0.13-0.45 | 0.79-1.30 | 0.035 | 0.035 |
| Thick>200mm | 0.31 | 0.13-0.45 | 0.79-1.30 | 0.035 | 0.035 |
| Grade | A516 Grade 70 Mechanical Property | |||
| Thickness | Yield | Tensile | Elongation | |
| A516 grade 70 | mm | Min Mpa | Mpa | Min % |
Heat Treatment:
Plates in thickness of 40 mm [1.5 in] or under it normally supplied in as-rolled condition. In case require normalized or stress relieved shall be informed before the order.
Plates over 40 mm [1.5 in] thickness shall be normalized.
In case notch-toughness tests are required on plates 1.5 in [40 mm] and under this thickness, the plates shall be normalized unless otherwise specified by the purchaser.
Agreed by purchaser, cooling rates faster than cooling in air are permissible for improvement of the toughness, provided the plates are subsequently tempered in 1100 to 1300℉ [595 to 705 ℃].
ASTM standards:
A20/A20M: General requirements of steel plates for pressure vessels and tanks
A435/A435M: Specification for straight-beam ultrasonic examination of steel plates
A577/A577M: For angle-beam ultrasonic examination of steel plates
A578/A578M: For straight-beam UT examniation of rolled plates for special applications
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