SA387/A387 Pressure Vessel Plate
The A387/SA387 steel sheet specification refers to six grades of alloy steel plates for high temperature applications, categorized by chromium and molybdenum content. 11 and 12 grades have similar chemical compositions and can be used for welded pressure vessels and industrial boilers, which are mainly used in the oil and gas and petrochemical industries, and are generally used for the transportation of high-temperature mediums. 5 and 9 grades of plates are alloyed with chromium and molybdenum to provide good corrosion and heat resistance, which is required by the sour oil and gas industry. The alloying elements chromium and molybdenum in grades 5 and 9 provide good corrosion and heat resistance, which is required by the sour oil and gas industry.
GNEE offers a wide range of sizes of A387/SA387 steel plate for pressure vessel manufacturers and the oil and gas industry. If you are interested in A387/SA387 pressure vessel quality steel plate or any other pressure vessel steel products, please contact us now for the latest price!
SA387/A387 boiler steel plate chemical composition
| GR. 2 | GR. 12 | GR. 11 | GR. 22 | GR. 22L | GR. 21 | GR. 21L | GR. 5 | GR. 9 | GR. 91* | |
|---|---|---|---|---|---|---|---|---|---|---|
| C | 0.05-0.21 | 0.05-0.17 | 0.05-0.17 | 0.05-0.15 | 0.10 | 0.05-0.15 | 0.10 | 0.15 | 0.15 | 0.08-0.12 |
| Mn | 0.55-0.80 | 0.40-0.65 | 0.40-0.65 | 0.30-0.60 | 0.30-0.60 | 0.30-0.60 | 0.30-0.60 | 0.30-0.60 | 0.30-0.60 | 0.30-0.60 |
| P | 0.025 | 0.025 | 0.025 | 0.025 | 0.025 | 0.025 | 0.025 | 0.025 | 0.025 | 0.020 |
| S | 0.025 | 0.025 | 0.025 | 0.025 | 0.025 | 0.025 | 0.025 | 0.025 | 0.025 | 0.010 |
| Si | 0.15-0.40 | 0.15-0.40 | 0.50-0.80 | 0.50 | 0.50 | 0.50 | 0.50 | 0.50 | 1.00 | 0.20-0.50 |
| Cr | 0.50-0.80 | 0.80-1.15 | 1.00-1.50 | 2.00-2.50 | 2.00-2.50 | 2.75-3.25 | 2.75-3.25 | 4.00-6.00 | 8.00-10.00 | 8.00-9.50 |
| Mo | 0.45-0.60 | 0.45-0.60 | 0.45-0.65 | 0.90-1.10 | 0.90-1.10 | 0.90-1.10 | 0.90-1.10 | 0.45-0.65 | 0.90-1.10 | 0.85-1.05 |
| V | - | - | - | - | - | - | - | - | 0.04 | 0.18-0.25 |
Tensile Requirements For Class 1 steel boiler plate
| GRADE | TENSILE (MPA) | YIELD (MPA) | ELONG. (50MM) | REDUC'N OF AREA* |
|---|---|---|---|---|
| 2, 12 | 380 - 550 | 230 min | 22% min | - |
| 11 | 415 - 585 | 240 min | 22% min | - |
| 22, 21, 5, 9 | 415 - 585 | 205 min | 18% min | 40% min |
| 21L, 22L | 415 - 585 | 205 min | 18% min | 40% min |
Tensile Requirements For Class 2 steel pressure vessel steel plate
| GRADE | TENSILE (MPA) | YIELD (MPA) | ELONG. (50 MM) | REDUC'N OF AREA* |
|---|---|---|---|---|
| 2 | 485 - 620 | 310 min | 22% min | - |
| 11 | 515 - 690 | 310 min | 22% min | - |
| 12 | 450 - 585 | 275 min | 22% min | - |
| 22, 21, 5, 9 | 515 - 690 | 310 min | 18% min | 40% min |
| 91 | 585 - 760 | 415 min | 18% min | - |
SA387/A387 Boiler Plate Steel Products Details
SA387/A387 has high resistance to embrittlement as well as good impact toughness at low temperatures. It is suitable for refining and gas treatment in hydrotreating and conversion facilities at high temperatures, and is available in thicknesses up to 250mm. Depending on the thickness and impact requirements, the heat treatment of SA387 steel plates is either normalized and tempered or normalized and rapidly cooled and tempered.
A387/SA387 vessel steel plate is suitable for temperature range (316℃-593℃). Its high temperature properties are of particular interest even in the current trend of applications requiring high temperature toughness.SA387/A387 steel is usually treated with fine grain, low silicon, low sulfur, calcium, and sometimes Q&T production to achieve the highest level of toughness.SA387/A387 boiler steel plate is available in a wide range of temperatures from (316°C - 593°C) to (593°C).
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