Steel P265GH
EN P265GH
P265GH (1.0425) is a non-alloy carbon steel plate for boilers and pressure vessels under the EN 10028-2 family, with Q245R and ASTM A515 Gr.65 as close counterparts.
Values for the HR condition
P265GH tempers and conditions
P265GH is supplied in 6 conditions, soft to hard. HR is the default FabDigit quotes; the values on this page are for it.
Compare all 6 conditionsHide
| Condition · open for datasheet | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness | Conductivity |
|---|---|---|---|---|---|---|
full/sub-critical annealed (+A), soft condition | Pick for maximum ductility before deep cold forming, tube expanding or heavy machining; strength drops toward the specification minimum. | 275 | 430 | 32 | 120 HB | 10 % IACS |
HRDefault Hot rolled | As-rolled thin plate, strip or welded tube where the mill's rolling schedule already gives fine grain; cheapest route but toughness scatter is wider and thick sections need normalizing. | 295 | 465 | 26 | 140 HB | 10 % IACS |
Normalized and tempered | Used for heavy forgings and thick tube where a tempering/stress-relief cycle after normalizing is needed to homogenize hardness and remove residual stress. | 295 | 460 | 29 | 130 HB | 10 % IACS |
Normalized (standard EN 10028-2 delivery condition) | Standard supply condition for pressure-vessel plate, tube and forgings; fine-grained, guaranteed 40 J CVN at 20 °C and full elevated-temperature design values. | 300 | 470 | 28 | 135 HB | — |
Quenched and tempered | Occasionally supplied for thick forgings, flanges and fittings needing through-thickness toughness at low temperature; strength band is only slightly above normalized because the carbon and alloy content are low. | 340 | 500 | 26 | 150 HB | 10 % IACS |
Cold drawn | Cold-drawn precision tube/bar with tight dimensions and higher strength but reduced ductility; must be normalized (+N) or stress-relieved for code pressure service. | 450 | 560 | 12 | 175 HB | 10 % IACS |
What is P265GH?
P265GH (1.0425) is a non-alloy carbon steel plate for boilers and pressure vessels under the EN 10028-2 family, with Q245R and ASTM A515 Gr.65 as close counterparts. It offers higher yield strength than P245GH — typically 295 MPa yield, 465 MPa tensile, 26 % elongation and 140 HB — combined with very good weldability and formability, and is supplied as hot-rolled, annealed, normalized, N&T, Q&T or cold-drawn product for medium-pressure vessel shells, heads and pipe. Design temperature is limited to about 400 °C and the steel has no corrosion resistance, so coating or cladding is required; where a higher yield is needed in the same duty, P355GH or Q345R is the next step. P265GH has a density of 7.85 g/cm³ (0.284 lb/in³), heavier than 56% of steel grades. It melts at 1,495°C (2,723 °F). P265GH has a yield strength of 295 MPa (42.8 ksi) and a tensile strength of 465 MPa (67.4 ksi) — weaker than 87% of steel grades. Elongation at break is 26% and the elastic modulus is 211 GPa (30.6 Msi).
What is P265GH used for?
- Pressure-vessel shells and heads
- Welded boiler components
- Heat-exchanger shells and tube sheets
- Steam and process piping
- Storage tanks
- Flanges and nozzles
- Compressor and receiver bodies
Advantages
- Easy to machine — 66/100, better than 95% of steel grades
- Forms and bends easily — 76/100, better than 91% of steel grades
- Readily welded — 90/100, better than 90% of steel grades
- Conducts heat well — 50 W/m·K (28.9 BTU/hr·ft·°F), better than 87% of steel grades
- High electrical conductivity — 10 % IACS, better than 83% of steel grades
Limitations
- Low strength — 295 MPa (42.8 ksi), worse than 87% of steel grades
P265GH properties
Typical room-temperature values for P265GH-HR; bars are the position among steel grades.
Physical3
P265GH has a density of 7.85 g/cm³ (0.284 lb/in³), heavier than 56% of steel grades. It melts at 1,495°C (2,723 °F).
Mechanical16
P265GH has a yield strength of 295 MPa (42.8 ksi) and a tensile strength of 465 MPa (67.4 ksi) — weaker than 87% of steel grades. Elongation at break is 26% and the elastic modulus is 211 GPa (30.6 Msi).
Thermal6
P265GH is rated for continuous service to 400°C (752 °F). It conducts heat at 50 W/m·K (28.9 BTU/hr·ft·°F), better than 87% of steel grades. Thermal expansion is 12 µm/m·K (6.67 µin/in·°F).
Electrical3
P265GH conducts electricity at 10 % IACS, better than 83% of steel grades.
Chemical & Environmental3
Corrosion resistance is not recommended (12/100), worse than 53% of steel grades.
Sustainability4
Producing a kilogram of P265GH takes about 25 MJ of energy and emits 2 kg of CO₂ — less than 82% of steel grades. Typical recycled content is 25%.
Manufacturability7
P265GH's machinability is good (66/100, better than 95% of steel grades); weldability excellent (90/100); formability very good (76/100).
Common Calculations5
Values are nominal handbook figures for design screening. Certified mill or lot data ships with every FabDigit order on request.
Strength versus weight in the steel family
Yield strength against density for every steel grade FabDigit runs. P265GH is highlighted; hover a dot for its name, or open the interactive family chart.
Working with P265GH
Is P265GH easy to machine?
Machines like mild steel — free-cutting at 120–200 m/min with coated carbide, but gummy chips and built-up edge; use positive rake, generous coolant and sharp tools for good finish.
Can P265GH be welded?
Excellent weldability by SMAW/GMAW/SAW/TIG with matching C-Mn consumables; preheat 100–150 °C above ~30 mm or in restrained joints, PWHT 550–600 °C per EN 13445/AD 2000 for thick sections.
Can P265GH be formed, bent or molded?
Readily cold formed, flanged and rolled into shells; hot form at 850–1000 °C and re-normalize if hot forming finishes below ~750 °C or cold strain exceeds code limits.
Manufacturability
The process limits FabDigit applies to P265GH. Every P265GH part is priced by an engineer; design inside these and the quote comes back without a redesign loop.
CNC machining
| Machinability | Better66 / 100 |
|---|---|
| ISO material group | P.2 |
| Cutting speed (rough / finish) | 180 / 210 m/min |
| Minimum wall | 0.8 mm |
| Minimum internal radius | 1 mm |
| Drill depth limit | 5× diameter |
| Best surface (machined / polished) | Ra 1.6 / — |
| Hardenable after machining | No |
Sheet metal
| Formability | Better76 / 100 |
|---|---|
| Weldability | Excellent90 / 100 |
| Bendable | Yes |
P265GH chemical composition (wt %)
Limits by weight percent from the governing specification, written the way the spec states them — a single maximum for impurities, a range for alloying elements, and the base element as balance. Nominal is the typical mid-range value.
| Element | Spec limit (wt %) | Nominal |
|---|---|---|
| CEN 10028-2 plate; ladle analysis | ≤ 0.2 | 0.16 |
| Si | ≤ 0.4 | 0.25 |
| Mn | 0.5 – 1.4 | 0.9 |
| P | ≤ 0.03 | 0.02 |
| S | ≤ 0.01 | 0.01 |
| Altotal Al, grain-refining minimum | ≥ 0.02 | 0.03 |
| CrCr+Cu+Mo+Ni ≤ 0.70 total | ≤ 0.3 | 0.1 |
| Cu | ≤ 0.3 | 0.15 |
| Mo | ≤ 0.08 | 0.02 |
| Ni | ≤ 0.3 | 0.1 |
| Nb | ≤ 0.01 | 0.01 |
| Ti | ≤ 0.03 | 0.01 |
| V | ≤ 0.02 | 0.01 |
| Fe | balance |
What surface finishes work on P265GH?
Not anodizable — blast-clean to Sa 2½ then epoxy/zinc-rich paint, hot-dip galvanize, phosphate, or use weld-overlay/roll-bonded stainless cladding for corrosive service.
Surface treatments FabDigit runs on steel parts — pick them in the quote configurator or call them out on the drawing. Each links to its datasheet in the surface-finish library (thickness, specs, call-out, material verdicts).
Plating
CVD Coating
Black / Phosphate
Thermal Spray
Equivalent designations
Standards and trade names that resolve to Steel P265GH in FabDigit's catalog. Equivalence is nominal — check the exact specification when certification matters.
- EN / DIN / Werkstoff-Nr.
- 1.0425
- Similar grades
- Q245RA515 Gr.65
How much does P265GH cost?
P265GH is a standard-cost steel ($$), cheaper than about 71% of the materials FabDigit quotes. Part price depends far more on geometry, tolerance and quantity than on the raw stock — upload a CAD file for a live quote.
P265GH — frequently asked
What is P265GH used for?
P265GH is typically used for pressure-vessel shells and heads, welded boiler components, heat-exchanger shells and tube sheets, steam and process piping, storage tanks and flanges and nozzles. In short: pressure-vessel HR plate.
What is the yield strength of P265GH?
P265GH has a typical yield strength of 295 MPa (42.8 ksi) and a tensile strength of 465 MPa (67.4 ksi) — weaker than 87% of steel grades. Strength varies by condition: see the 6 listed tempers.
Is P265GH easy to machine?
Reasonably — machinability is rated good (66/100, better than 95% of steel grades). Machines like mild steel — free-cutting at 120–200 m/min with coated carbide, but gummy chips and built-up edge; use positive rake, generous coolant and sharp tools for good finish.
Can P265GH be welded?
Yes — weldability is rated excellent (90/100). Excellent weldability by SMAW/GMAW/SAW/TIG with matching C-Mn consumables; preheat 100–150 °C above ~30 mm or in restrained joints, PWHT 550–600 °C per EN 13445/AD 2000 for thick sections.
What surface finishes work on P265GH?
Not anodizable — blast-clean to Sa 2½ then epoxy/zinc-rich paint, hot-dip galvanize, phosphate, or use weld-overlay/roll-bonded stainless cladding for corrosive service.
Can P265GH be formed, bent or molded?
Readily cold formed, flanged and rolled into shells; hot form at 850–1000 °C and re-normalize if hot forming finishes below ~750 °C or cold strain exceeds code limits.
What is the maximum service temperature of P265GH?
P265GH is rated for continuous use to about 400°C (752 °F). Strength falls off well before that limit — check the elevated-temperature data for load-bearing parts.
What is the difference between P265GH-HR and P265GH-CD?
HR is the default condition — as-rolled thin plate, strip or welded tube where the mill's rolling schedule already gives fine grain; cheapest route but toughness scatter is wider and thick sections need normalizing. CD: cold-drawn precision tube/bar with tight dimensions and higher strength but reduced ductility; must be normalized (+N) or stress-relieved for code pressure service. Yield strength is 295 MPa in HR versus 450 MPa in CD.
How much does P265GH cost?
P265GH is a standard-cost steel ($$), cheaper than about 71% of the materials FabDigit quotes. Part price depends far more on geometry, tolerance and quantity than on the raw stock — upload a CAD file for a live quote.
Can FabDigit make parts in P265GH?
Yes — P265GH is available for CNC machining and sheet metal; every part is priced by an engineer rather than instantly. Upload a STEP file to get a price and a DFM check.
Sources
- EN 10028-2 — Flat products of steels for pressure purposes: non-alloy and alloy steels with specified elevated temperature properties — CEN (2017)
- EN 10216-2 — Seamless steel tubes for pressure purposes with specified elevated temperature properties — CEN (2020)
- EN 10222-2 — Steel forgings for pressure purposes: ferritic and martensitic steels with specified elevated temperature properties — CEN (2021)
- EN 10273 — Hot rolled weldable steel bars for pressure purposes with specified elevated temperature properties — CEN (2016)
- ASM Handbook Vol.1 — Properties and Selection: Irons, Steels, and High-Performance Alloys — ASM International (1990)
- ASM Handbook Vol.19 — Fatigue and Fracture — ASM International (1996)
- Pressure vessel plate P265GH / P355GH datasheets — Dillinger / Voestalpine / ArcelorMittal (2022)
Property data is compiled from published supplier and standards handbooks and normalised for comparison; hardness values on non-Brinell scales are converted approximately for charting only. Manufacturability limits are FabDigit quote-engine defaults and may be relaxed by engineering review. Nothing on this page is a certification — request mill certs, CoC or material test reports with your order.