ASTM A285 standard is for carbon steel, low and intermediate tensile strength steel plates intended for fusion-welded pressure vessels.
The steel plate under ASTM A285 ranges in three grades, A, B and C, most common use is ASTM A285 Grade C plates. Which shall be made by killed, semi-killed, capped or rimmed steel practices at manufacturer's option.
For killed carbon steels only refer to below ASTM specifications.
- A 299/A 299M: Carbon steel manganese silicon pressure vessel plates.
- A 515/A 515M: Carbon steel for intermediate and higher temperature services of pressure vessel plates.
- A516/A516M: Carbon steel for moderate and lower temperature pressure vessel plates.
Maximum thickness of plates is limited to 50 mm [2 inch] for all grades.
Referenced Documents:
ASTM Sandards:
- A20/A20M: General requirements for steel plates for pressure vessels.
General Requirements and Ordering Information:
- Testing and retesting methods, procedures, dimension tolerance, mass, quality and repair defects, marking, loading and ordering information shall comply with A20/A20M.
- In additional to basic requirements, certain supplementary requirements are available.
- Coils are excluded from A285 until they have been cutted to plate.
ASTM A285 Grade C Steel Plate Data Sheet
Chemical Composition:
Elements | Composition, % | ||
|---|---|---|---|
| Grade A | Grade B | Grade C |
Carbon, maxA | 0.17 | 0.22 | 0.28 |
Manganese, max Heat analysis | 0.90 | 0.90 | 0.90 |
Product analysis | 0.98 | 0.98 | 0.98 |
Phosphorus, maxA | 0.025 | 0.025 | 0.025 |
Sulfur, maxA | 0.025 | 0.025 | 0.025 |
Mechanical Properties:
| Grade A | Grade B | Grade C | |||
|---|---|---|---|---|---|---|
| ksi | [MPa] | ksi | [MPa] | ksi | [MPa] |
Tensile strength | 45-65 | [310-450] | 50-70 | 345-485 | 55-75 | 380-515 |
Yield strength, minA | 24 | [165] | 27 | [185] | 30 | [205] |
Elongation in 8 in. or [200 mm], min, %B | 27 | 25 | 23 | |||
Elongation in 2 in. or [50 mm], min, %B | 30 | 28 | 27 | |||
A Determined by either the 0.2% offset method or the 0.5% extension under load method.
B See Specification A20/A20M for elongation adjustment.
Our Supply Range:
Description: Carbon Steel ASTM A285 Grade C & B & A
Manufacturing Types: Hot Rolled
Thickness: 2 to 150 mm
Width: 0.6m to 3m
Length: 6m, 12m, customized
Surface: Natural, Painted
Packing: Standard sea packing, bundled with streel strip.
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ASTM A515 Grade 60, 65, 70 Plate
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