ASTM A285 / A285M
This specification covers carbon steel plates of lowand intermediate-tensile strengths which may be made by killed, semi-killed, capped, or rimmed steel practices at the producer’s option. These plates are intended for fusion-welded pressure vessels.Plates under this specification are available in three grades having different strength levels.The maximum thickness of plates under this specification,for reasons of internal soundness, is limited to a maximum thickness of 2 in. [50 mm] for all grades.
Grades
| Grades | Descriptions |
|---|---|
| Grade A | - |
| Grade B | - |
| Grade C | - |
Chemical Properties
| Grade | Carbon | Manganese | Phosphorus,max | Sulfur,max |
|---|---|---|---|---|
| Grade A | 0.17 | 0.98 | 0.025 | 0.025 |
| Grade B | 0.22 | 0.98 | 0.025 | 0.025 |
| Grade C | 0.28 | 0.98 | 0.025 | 0.025 |
Note: A Applies to both heat and product analyses.
Mechanical Properties
| Grades |
Tensile strength,min: ksi [MPa] |
Yield strength,min: ksi [MPa] |
Elongation in 8 in. [200 mm] min, %A | Elongation in 2 in. [50 mm] min, %A,B |
|---|---|---|---|---|
| Grade A | 45–65 [310–450] | 24 [165] | 27 | 30 |
| Grade B | 50–70 [345–485] | 27 [185] | 25 | 28 |
| Grade C | 55–75 [380–515] | 30 [205] | 23 | 27 |
