What makes pressure vessel plate different
P-grades to EN 10028-2 are fine-grain, normalized steels whose yield strength is guaranteed not only at room temperature but at elevated temperatures (up to 400 °C for P265GH, 500 °C for 16Mo3), with tight limits on carbon, sulphur and phosphorus, controlled aluminium for grain size and a −20 °C impact test. They are supplied with EN 10204 3.2 certificates witnessed by a notified body, which is what the Pressure Equipment Directive, ASME Section VIII (for A516) and most national boiler codes require. Applications: fire-tube and water-tube boilers, steam drums, pressure vessels, air receivers, LPG and ammonia tanks, heat-exchanger shells and tube sheets, autoclaves, and process vessels in refineries and food plants.
Grade pages — P235GH to 16Mo3 and A516
Each pressure-vessel grade has its own page with chemistry, elevated-temperature yield, equivalents, weight tables and price band: P235GH (hot-water and low-pressure boilers), P265GH (the standard boiler plate, in stock), P295GH, P355GH (high-pressure drums, LPG), P355NH (fine-grain, −20 °C, LPG spheres), 16Mo3 (to 500 °C) and the ASME grade A516 Gr. 70.
Grades and elevated-temperature properties
| Grade | Number | Yield 20 °C (MPa) | Yield 300 °C (MPa) | Tensile (MPa) | Max. design temp. | Old DIN | ASTM near |
|---|---|---|---|---|---|---|---|
| P235GH | 1.0345 | 235 | 150 | 360–480 | 400 °C | HI | A285 Gr. C |
| P265GH | 1.0425 | 265 | 175 | 410–530 | 400 °C | HII | A516 Gr. 60 |
| P295GH | 1.0481 | 295 | 200 | 460–580 | 400 °C | 17Mn4 | A516 Gr. 65 |
| P355GH | 1.0473 | 355 | 235 | 510–650 | 400 °C | 19Mn6 | A516 Gr. 70 |
| 16Mo3 | 1.5415 | 275 | 194 (at 400 °C 159) | 440–590 | 500 °C | 15Mo3 | A204 Gr. A |
| P275NH | 1.0487 | 275 | — | 390–510 | — | WStE 285 | — |
| P355NH | 1.0565 | 355 | — | 490–630 | — | WStE 355 | A516 Gr. 70 (N) |
Impact 27 J at −20 °C (GH) / 40 J (NH); chemistry C ≤ 0.16–0.22, Mn 0.40–1.70, Al ≥ 0.020, S ≤ 0.010–0.015 for 16Mo3/P355GH. Full data on steelstandart.com.
Sizes and stock
| Grade | Thickness | Width | Length | Availability |
|---|---|---|---|---|
| P235GH | 5–60 mm | 1 500 / 2 000 / 2 500 | 6 000 / 12 000 | Order 3–5 weeks |
| P265GH | 5–100 mm | 1 500 / 2 000 / 2 500 / 3 000 | 6 000 / 12 000 | 6–40 mm stock |
| P295GH | 6–80 mm | 2 000 / 2 500 | 6 000 / 12 000 | Order 4–6 weeks |
| P355GH | 6–100 mm | 2 000 / 2 500 / 3 000 | 6 000 / 12 000 | 8–30 mm stock |
| 16Mo3 | 6–80 mm | 2 000 / 2 500 | 6 000 / 12 000 | Order 4–8 weeks |
| A516 Gr. 70 | 6–100 mm | 2 000 / 2 500 / 3 000 | 6 000 / 12 000 | Order 4–6 weeks; dual P355GH on request |
Certification: 3.2, PED, UT, HIC
Standard delivery is EN 10204 3.1 normalized; for pressure equipment we supply 3.2 with the inspector of your choice (TÜV, BV, LR, DNV, SGS) witnessing the tensile, impact and elevated-temperature tests. Ultrasonic testing to EN 10160 S1/E1 or S2/E2, through-thickness Z25/Z35, and HIC testing (NACE TM0284) for sour service are available; plates are hard-stamped with heat, plate number and inspector's mark. All mills are PED-approved (Annex I 4.3) and hold AD 2000 W0 approval.
Cutting, bevelling, rolling and dished ends
Plasma and oxy-fuel cutting to shell developments and nozzle cut-outs; bevelling for full-penetration welds; four-roll plate rolling to 40 mm × 3 000 mm for shells and cones (see rolling and bending); dished ends (torispherical, elliptical) to 3 000 mm diameter from partner presses; tube sheets drilled to drawing. Rolled shells ship nested with heat traceability transferred under inspection.
P265GH vs S235JR / S355J2 — why not structural plate
S235JR and P265GH look similar at room temperature, but structural plate has no guaranteed strength at 300–400 °C, no −20 °C impact, wider sulphur limits and no PED certification, so a boiler or vessel inspector will reject it. P-grades cost 8–20% more per ton and are always normalized. A direct comparison of S235JR and P265GH is on our reference site.
Pressure vessel plate price per ton
Priced per mill lot and certificate level: P265GH normalized about 8–15% above S235JR plate, P355GH 12–20% above S355J2, 16Mo3 30–50% above; 3.2 witness, UT and HIC are per-plate extras. Ask for the current USD/MT with your grade, thickness, inspector and quantity.
Bands from our weekly export list (September 2026), FOB Istanbul, full-container quantities, excluding freight and certificates. Firm price per project on RFQ within one working day.
Export and packing
Plates on bearers, strapped, stamps visible; 6 m in 40' HC, 12 m by flat-rack or breakbulk. HS code 7208.51 / 7225.40 (16Mo3 alloy).
| Term | Detail |
|---|---|
| MOQ | 5 t per grade/thickness |
| Incoterms | FOB Istanbul / Derince · CIF / CFR Gulf, Africa · DAP EU, Balkans, Iraq, Caucasus · DAP Aktau |
| Lead time | P265GH / P355GH stock 5–10 working days; other grades 4–8 weeks; 3.2 witness +1 week |
| Packing | Plates on bearers, strapped; rolled shells nested and chocked |
| Container / truck | 40' HC to 6 m / 24 t · flat-rack 12 m · breakbulk · truck 24 t |
| Documents | EN 10204 3.1/3.2, UT, Z, HIC, PED statement, certificate of origin |
| Payment | 30% advance, balance against B/L copy; L/C at sight via London office |
Certificates
EN 10204 3.1 or 3.2 (TÜV / BV / LR / DNV / SGS), UT EN 10160, Z-quality EN 10164, HIC on request, PED conformity, certificate of origin.
How to order
Send grade, thickness × width × length or shell development, certificate level (3.1 / 3.2 + inspector), UT/Z/HIC needs, quantity and port. Reply within one working day.
Standards
- EN 10028-2 (flat products for pressure purposes, non-alloy and alloy steels with elevated-temperature properties)
- EN 10028-3 (P275NH, P355NH weldable fine-grain)
- PED 2014/68/EU (AD 2000-Merkblatt W1)
- ASTM A516 / A516M Gr. 60, 65, 70
- ASTM A285 Gr. C
- EN 10204 3.2 / EN 10160 UT
Grades
Grade data sheets (chemistry, mechanicals, equivalents) are on our reference site: P265GH · 16Mo3 · P355NH · A516 Grade 70 · S235JR vs P265GH
Frequently asked questions
What is P265GH?
A normalized non-alloy pressure-vessel steel to EN 10028-2 (1.0425, old HII): 265 MPa yield at 20 °C, 175 MPa guaranteed at 300 °C, tensile 410–530, impact 27 J at −20 °C — the most used boiler and vessel plate in Europe, equivalent to ASTM A516 Grade 60.
What is the difference between P265GH and A516 Grade 70?
A516 Gr. 70 has higher strength (260 MPa yield, 485–620 tensile) and corresponds to P355GH; P265GH matches A516 Gr. 60. Dual-certified plates P355GH/A516-70 are available for projects mixing EN and ASME.
When do I need 16Mo3?
For design temperatures between 400 and 500 °C — superheaters, steam drums, hot-oil systems — where the 0.3% molybdenum keeps the creep and elevated-temperature strength.
What is a 3.2 certificate?
An EN 10204 inspection certificate in which the tests are witnessed and countersigned by an independent inspector (TÜV, BV, LR, DNV) or the purchaser's representative — required by PED and most boiler codes.
Can I use S235JR for an air receiver?
Not for a pressure vessel under PED or a national boiler code: the inspector requires a P-grade with elevated-temperature properties and 3.2 certification. For non-coded low-pressure tanks S235JR is common.
Do you supply rolled shells and dished ends?
Yes — shells rolled to 40 mm × 3 000 mm on our four-roll machine, cones, and torispherical or elliptical dished ends to 3 000 mm from partner presses, with heat traceability transferred under inspection.
How much does P265GH cost?
About 8–15% above S235JR plate per ton for normalized 3.1 material; 3.2 witness, UT and HIC add per-plate fees. Firm price within one working day.