ASTM A516 / A516M
This specification covers carbon steel plates intended primarily for service in welded pressure vessels where improved notch toughness is important.Plates under this specification are available in four grades having different strength levels.The maximum thickness of plates is limited only by the capacity of the composition to meet the specified mechanical property requirements; however, current practice normally limits the maximum thickness of plates furnished under the specification.
| Grades | Description |
|---|---|
| Grade 55 [Grade 380] | - |
| Grade 60 [Grade 415] | - |
| Grade 65 [Grade 450] | - |
| Grade 70 [Grade 485] | - |
Chemical Properties
| Grade | Carbon | Manganese | Phosphorus,max | Sulfur,max | Silicon | |||||
|---|---|---|---|---|---|---|---|---|---|---|
| 1⁄2 in. [12.5 mm] and under | Over 1⁄2 in. to 2 in. [12.5 to 50 mm], incl | Over 2 in. to 4 in. [50 to 100 mm], incl | Over 4 to 8 in. [100 to 200 mm], incl | Over 8 in. [200 mm] | 1⁄2 in. [12.5 mm] and under: | Over 1⁄2 in. [12.5 mm]: | ||||
| Grade 55 [Grade 380] | 0.18 | 0.20 | 0.22 | 0.24 | 0.26 | 0.55–0.98 | 0.55–1.30 | 0.025 | 0.025 | 0.13–0.45 |
| Grade 60 [Grade 415] | 0.21 | 0.23 | 0.25 | 0.27 | 0.27 | 0.55–0.98C | 0.79–1.30 | 0.025 | 0.025 | 0.13–0.45 |
| Grade 65 [Grade 450] | 0.24 | 0.26 | 0.28 | 0.29 | 0.29 | 0.79–1.30 | 0.79–1.30 | 0.025 | 0.025 | 0.13–0.45 |
| Grade 70 [Grade 485] | 0.27 | 0.28 | 0.30 | 0.31 | 0.31 | 0.79–1.30 | 0.79–1.30 | 0.025 | 0.025 | 0.13–0.45 |
Note: A Applies to both heat and product analyses.
B For each reduction of 0.01 percentage point below the specified maximum for carbon, an increase of 0.06 percentage point above the specified maximum for manganese is permitted, up to a maximum of 1.50 % by heat analysis and 1.60 % by product analysis.
C Grade 60 plates 1⁄2 in. [12.5 mm] and under in thickness may have 0.85–1.20 % manganese on heat analysis, and 0.79–1.30 % manganese on product analysis.
Mechanical Properties
| Grades |
Tensile strength,min: ksi [MPa] |
Yield strength,minA: ksi [MPa] |
Elongation in 8 in. [200 mm] min, %B | Elongation in 2 in. [50 mm] min, %B |
|---|---|---|---|---|
| Grade 55 | 55–75 [380–515] | 30 [205] | 23 | 27 |
| Grade 60 | 60–80 [415–550] | 32 [220] | 21 | 25 |
| Grade 65 | 65–85 [450–585] | 35 [240] | 19 | 23 |
| Grade 70 | 70–90 [485–620] | 38 [260] | 17 | 21 |
