Steel P265GH · supply condition · default condition
Steel P265GH-HR
Properties of the HR condition, compared with the other P265GH tempers.
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.
What is P265GH-HR?
P265GH-HR is P265GH supplied in the HR 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. P265GH-HR 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). P265GH-HR 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).
Advantages
- Easy to machine — 68/100, better than 95% of steel grades
- Readily welded — 90/100, better than 90% of steel grades
- Forms and bends easily — 76/100, better than 90% of steel grades
- Conducts heat well — 50 W/m·K (28.9 BTU/hr·ft·°F), better than 88% of steel grades
- Ductile — tolerates forming and impact — 26%, better than 82% of steel grades
Limitations
- Low strength — 295 MPa (42.8 ksi), worse than 87% of steel grades
P265GH-HR properties
Typical room-temperature values for P265GH-HR — 9 properties are specific to this condition; the rest are grade-level values shared by every P265GH temper. Each bar shows where the value sits among the steel grades in FabDigit's library — further right is higher.
Physical3
P265GH-HR 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).
Mechanical15
P265GH-HR 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-HR 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 88% of steel grades. Thermal expansion is 12 µm/m·K (6.67 µin/in·°F).
Electrical2
P265GH-HR has an electrical resistivity of 1.7×10⁻⁷ Ω·m.
Chemical & Environmental3
Corrosion resistance is not recommended (12/100), worse than 53% of steel grades.
Sustainability4
Producing a kilogram of P265GH-HR 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-HR's machinability is good (68/100, 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.
Other P265GH tempers and conditions
P265GH is also supplied in 5 other conditions. The full side-by-side table is on the P265GH overview.
- HRDefaultAs-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 MPa yield · 140 HB
- CDCold-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 MPa yield · 175 HB
- Q&TOccasionally 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 MPa yield · 150 HB
- NormalizedStandard 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 MPa yield · 135 HB
- N&TUsed for heavy forgings and thick tube where a tempering/stress-relief cycle after normalizing is needed to homogenize hardness and remove residual stress.295 MPa yield · 130 HB
- AnnealedPick for maximum ductility before deep cold forming, tube expanding or heavy machining; strength drops toward the specification minimum.275 MPa yield · 120 HB
Working with P265GH-HR
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.
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.
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 | — |
P265GH-HR — frequently asked
What is P265GH-HR used for?
P265GH-HR 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-HR?
P265GH-HR 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-HR easy to machine?
Reasonably — machinability is rated good (68/100, 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-HR 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-HR?
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-HR 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-HR?
P265GH-HR 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.
Can FabDigit make parts in P265GH-HR?
Yes — P265GH-HR is available for CNC machining and sheet metal with instant online pricing. 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. Nothing on this page is a certification — request mill certs, CoC or material test reports with your order.