Pressure Vessel & Boiler Plate · pressure-vessel plate for reactor and column shells, heat-exchanger shells, boiler and steam drums, LPG and ammonia storage spheres, and hydrotreater vessels
1.1 This specification covers two types of 2¼ Cr-1 Mo and three types of Cr-Mo-V alloy steel plates for use in the quenched-and-tempered condition, intended for the fabrication of welded pressure vessels and components. 1.2 Material under this specification is available in five types, designated "A," "B," "C," "D," and "E." Type B is identical to Type A except for restrictive limits for carbon, phosphorus, sulfur, and nickel. The material is also available in five classes having the following strength levels. Type…
Specification text excerpt, reproduced for reference. Read the full ASME SA-542/SA-542M text →
| Element | Type A |
|---|---|
| Carbon: / Heat analysis | 0.15 |
| Carbon: / Product analysis | 0.18 |
| Manganese: / Heat analysis | 0.30–0.60 |
| Manganese: / Product analysis | 0.25–0.66 |
| Phosphorus: / Heat analysis | 0.025 |
| Phosphorus: / Product analysis | 0.025 |
| Sulfur: / Heat analysis | 0.025 |
| Sulfur: / Product analysis | 0.025 |
| Silicon: / Heat analysis | 0.50 |
| Silicon: / Product analysis | 0.50 |
| Chromium: / Heat analysis | 2.00–2.50 |
| Chromium: / Product analysis | 1.88–2.62 |
| Molybdenum: / Heat analysis | 0.90–1.10 |
| Molybdenum: / Product analysis | 0.85–1.15 |
| Copper: / Heat analysis | 0.40 |
| Copper: / Product analysis | 0.43 |
| Nickel: / Heat analysis | 0.40 |
| Nickel: / Product analysis | 0.43 |
| Vanadium: / Heat analysis | 0.03 |
| Vanadium: / Product analysis | 0.04 |
| Titanium: / Heat analysis | — |
| Titanium: / Product analysis | — |
| Boron: / Heat analysis | — |
| Boron: / Product analysis | — |
| Columbium (niobium):A / Heat analysis | — |
| Columbium (niobium):A / Product analysis | — |
Limits as specified in ASME SA-542/SA-542M. Where the standard sets different values by thickness or product analysis, each band is shown separately.
| Column 1 | Class 1 | Class 2 | Class 3 | Class 4 | Class 4a |
|---|---|---|---|---|---|
| Elongation in 2 in. [50 mm], min, %A | 14 | 13 | 20 | 20 | 18 |
| A See Specification A20/A20M for elongation adjustment. | A See Specification A20/A20M for elongation adjustment. | A See Specification A20/A20M for elongation adjustment. | A See Specification A20/A20M for elongation adjustment. | A See Specification A20/A20M for elongation adjustment. | A See Specification A20/A20M for elongation adjustment. |
Mechanical requirements for the thickness ranges shown. Impact testing is carried out at the temperature specified for the grade.
SA542 is normally specified for reactor and column shells, heat-exchanger shells, boiler and steam drums, LPG and ammonia storage spheres, and hydrotreater vessels.
We supply it cut to size by plasma, laser or waterjet, with edges machined or flame-cut to your drawing, and can deliver in the heat-treatment condition your fabrication procedure requires.
Supplied in the heat-treatment condition the standard requires for the grade — as-rolled, normalized, normalized and tempered, or quenched and tempered. Simulated post-weld heat treatment can be carried out and reported before shipment.
Mill test certificate to EN 10204 3.1 / 3.2; Ultrasonic testing to EN 10160 (S1–S3) or ASTM A578; HIC to NACE TM0284 and SSC to NACE TM0177; Simulated post-weld heat treatment (PWHT) on request; Third-party inspection by SGS, BV, TÜV or Intertek
Seaworthy packing — bottom skids, steel strapping, VCI film and edge protection — is standard for sea freight. Container loading plans with piece weights are issued before shipment.
Send the grade or the standard you specify, the thickness range, quantity and destination port. We reply with price, lead time, delivery term and the applicable certificate within 12 hours (Mon–Sat, GMT+8).
