What is P265GH steel plate?
P265GH is the non-alloy pressure-vessel steel with 265 MPa minimum yield and specified elevated-temperature properties per EN 10028-2. Its chemistry (C ≤ 0.20 %, Mn 0.80–1.40 %, Al-killed, fine grain) is set for a stable microstructure in continuous service to about 400 °C; the standard certifies Rp0.2 of 223 MPa at 100 °C, 186 at 200 °C, 153 at 300 °C and 130 at 400 °C for plate up to 16 mm, and it is these values a designer uses to size a shell under the PED, AD 2000 or EN 13445. The DIN predecessor was H II, and the ASME-world twin is A516 Grade 60 — the two are frequently accepted as substitutes with the designer's approval. P265GH is the volume grade: Erdemir and İsdemir roll it in every campaign, so it is the boiler plate with the shortest lead time and the one we stock. It welds without preheat up to 25–30 mm, forms and dishes well, and covers the great majority of steam boilers, air receivers, heat exchangers and autoclaves.
Chemical composition
| Element | C | Si | Mn | P | S | Al | Cr | Cu | Mo | Ni | N |
|---|---|---|---|---|---|---|---|---|---|---|---|
| max. % (ladle) | ≤ 0.20 | ≤ 0.40 | 0.80–1.40 | ≤ 0.025 | ≤ 0.010 | ≥ 0.020 | ≤ 0.30 | ≤ 0.30 | ≤ 0.08 | ≤ 0.30 | ≤ 0.012 |
Nb ≤ 0.020, Ti ≤ 0.03, V ≤ 0.02; Cr + Cu + Mo + Ni ≤ 0.70. CEV ≤ 0.40 typical.
Mechanical properties
| Thickness | Yield ReH min (MPa) | Tensile Rm (MPa) | Elongation A min | Impact KV |
|---|---|---|---|---|
| ≤ 16 mm | 265 | 410–530 | 22 % | 27 J at +20 °C (40 J long.) |
| > 16–40 mm | 255 | 410–530 | 22 % | 27 J at +20 °C |
| > 40–60 mm | 245 | 410–530 | 22 % | 27 J at +20 °C |
| > 60–100 mm | 215 | 400–520 | 21 % | 27 J at +20 °C |
| Rp0.2 at 100 / 200 / 300 / 400 °C (≤ 16 mm) | 223 / 186 / 153 / 130 | — | — | — |
Equivalent grades
| System | Grade | Note |
|---|---|---|
| DIN 17155 | H II | direct predecessor |
| ASTM | A516 Gr. 60 | 220 MPa yield, 415–550 tensile |
| ASTM | A285 Gr. C (near) | |
| JIS G3103 / G3115 | SB410 / SPV235 | |
| GB 713 | Q245R | |
| BS 1501 | 161-430A | historic |
Thickness range and stock sizes
| Thickness | Widths × lengths | Availability |
|---|---|---|
| 3–5 mm | 1 500 × 6 000 | to order 1–3 weeks |
| 6–20 mm | 1 500 / 2 000 / 2 500 × 6 000 | stock, limited |
| 25–40 mm | 2 000 / 2 500 × 6 000–12 000 | to order 1–3 weeks |
| 50–100 mm | 2 000–2 500 × 6 000 | to order 3–5 weeks, UT |
Weight per m² and per plate
| Thickness | kg/m² | 1 500 × 6 000 (kg) | 2 000 × 6 000 (kg) | 2 500 × 12 000 (kg) |
|---|---|---|---|---|
| 3 mm | 23.6 | 212 | 283 | 707 |
| 4 mm | 31.4 | 283 | 377 | 942 |
| 5 mm | 39.3 | 353 | 471 | 1 178 |
| 6 mm | 47.1 | 424 | 565 | 1 413 |
| 8 mm | 62.8 | 565 | 754 | 1 884 |
| 10 mm | 78.5 | 707 | 942 | 2 355 |
| 12 mm | 94.2 | 848 | 1 130 | 2 826 |
| 15 mm | 117.8 | 1 060 | 1 413 | 3 533 |
| 20 mm | 157.0 | 1 413 | 1 884 | 4 710 |
| 25 mm | 196.3 | 1 766 | 2 355 | 5 888 |
| 30 mm | 235.5 | 2 120 | 2 826 | 7 065 |
| 40 mm | 314.0 | 2 826 | 3 768 | 9 420 |
| 50 mm | 392.5 | 3 533 | 4 710 | 11 775 |
| 60 mm | 471.0 | 4 239 | 5 652 | 14 130 |
| 80 mm | 628.0 | 5 652 | 7 536 | 18 840 |
| 100 mm | 785.0 | 7 065 | 9 420 | 23 550 |
Nominal weights — mill tolerance to EN 10029 class A adds up to +4 % on thin plate; invoiced on theoretical weight unless agreed otherwise.
Welding, cutting and forming
Welding to EN ISO 15614-1 qualified procedures: basic low-hydrogen consumables (E42 basic, G3Si1 / G4Si1), no preheat up to 25–30 mm, 75–100 °C above; interpass ≤ 250 °C. PWHT at 550–600 °C above about 35 mm wall per PED/AD 2000 (and always for tube-plate weldments). Cold forming to 2 × t; hot forming 900–1 000 °C followed by normalising at 890–930 °C; dished ends are pressed hot and normalised. Ultrasonic testing per EN 10160 is recommended above 40 mm. The fine grain gives excellent drilling and tube-expansion behaviour.
Where it is used
- Steam boiler shells, furnaces and reversal chambers
- Air receivers and compressed-air vessels
- Heat-exchanger shells and tube plates
- Autoclaves and sterilisers
- Process vessels to 400 °C
- Hot-water accumulators and district-heating tanks
P265GH vs A516 Grade 60
They are the two default pressure-vessel plates of their worlds and are usually interchangeable with designer approval: P265GH gives 265 MPa yield and a certified elevated-temperature table; A516 Gr. 60 gives 220 MPa yield with a wider tensile band (415–550 MPa) and is specified through ASME Section II. A516 is generally normalised only above 40 mm unless ordered; P265GH always is. For an ASME U-stamp job order A516 Gr. 70; for PED/AD 2000 order P265GH. For more strength in the same family see P295GH and P355GH.
Price
P265GH is our reference boiler plate, about 200 USD/t over the S235JR base. The band below is the month's FOB Istanbul range for the 6–20 mm stock; UT, 3.2 and cut blanks are priced per ton or per piece.
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
Export packing of P265GH steel plate is by skid: up to 5 t per pack, steel straps, corner boards, stencilled heat numbers and a pack list that references the 3.1 certificates. Six-metre plate loads 24–25 t into a 40' HC. Long and heavy plate is shipped flat-rack or breakbulk via Derince. HS code 7208.51 / 7208.52.
| Term | Detail |
|---|---|
| MOQ | 5 t of one thickness |
| Incoterms | FOB Istanbul · CIF / CFR Gulf, Africa · DAP EU, Balkans, Iraq, Caucasus · DAP Aktau |
| Lead time | Stock 6–20 mm: 3–7 working days; other sizes 1–3 weeks |
| Packing | Skids up to 5 t, strapped, heat numbers stencilled |
| Container / truck | 40' HC ≈ 24–25 t of 6 m plate |
| Documents | Invoice, packing list, EN 10204 3.1 (3.2 on request), certificate of origin; SASO / SONCAP / PVoC on request |
| Payment | 30% advance, balance against B/L copy; L/C at sight for orders above 100 t |
Certificates and testing
Documentation for P265GH steel plate: EN 10204 3.1 mill certificate as standard (heat number, analysis, tensile, Charpy, condition); 3.2 with an independent inspector, EN 10160 UT reports and additional low-temperature Charpy tests are available on plates above 8 mm at order.
How to order
Send thickness × width × length, tonnage, design code, certificate level and UT/impact options; for dished-end blanks and tube plates send the drawing and we cut to size on our plasma and laser lines.
Standards
- EN 10028-2:2017 — P265GH, 1.0425
- DIN 17155 — H II (withdrawn)
- PED 2014/68/EU; AD 2000 W1
- EN 10029 class A/B; EN 10160 S1/E1 on request
Grades
Grade data sheets (chemistry, mechanicals, equivalents) are on our reference site: P265GH · P235GH · P295GH
Frequently asked questions
What type of material is P265GH?
A non-alloy, aluminium-killed, normalised carbon steel for pressure equipment (EN 10028-2, 1.0425) with 265 MPa yield and certified yield strength up to 400 °C; formerly DIN H II.
What is the ASTM steel equivalent of P265GH?
ASTM A516 Grade 60 is the standard comparison (A285 Grade C for lighter duty); substitution needs the designer's approval because the two standards certify different properties.
What is the maximum working temperature of P265GH?
About 400 °C for plate in continuous service — the highest temperature at which EN 10028-2 specifies its proof strength; use 16Mo3 above that.
Does P265GH need preheating?
Not below 25–30 mm; 75–100 °C above, with low-hydrogen consumables. PWHT is required above about 35 mm by most codes.
What is the difference between P265GH and P295GH?
P295GH has 295 MPa yield (11 % more) and higher elevated-temperature values, so the shell can be about 10 % thinner at the same pressure; it has a higher carbon equivalent and needs preheat above 20 mm.
Is P265GH in stock in Turkey?
Yes — 6–20 mm in 1 500–2 500 mm widths in limited quantities at our Dilovası warehouse; other sizes in 1–3 weeks.