Steel P235TR2 +AR (Hot rolled)
Heat-treated state
EN 1.0255
Cheapest hot-finished tube where the mill controls rolling temperature; used for low-duty structural or conveying lines.
Values for the +AR condition
Other P235TR2 tempers and conditions
P235TR2 is listed in 7 conditions; see the grade overview at P235TR2.
Compare all 7 conditionsHide
| Condition · open for datasheet | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness | Conductivity |
|---|---|---|---|---|---|---|
Annealed | Softest, most ductile condition for tube that will be heavily bent, flared, expanded or cold-formed after supply. | 220 | 370 | 32 | 110 HB | 12 % IACS |
Hot-dip galvanized tube | Choose for outdoor water, fire-protection and low-pressure lines where bare carbon steel would rust. | 255 | 420 | 27 | 125 HB | 11 % IACS |
+NDefault Normalized | Standard EN 10216-1 / 10217-1 pressure-tube delivery condition with guaranteed 235 MPa yield and +20 °C impact energy. | 260 | 420 | 28 | 125 HB | — |
Annealed then lightly cold drawn | Used when a soft, formable tube with close diameter tolerance and bright surface is needed. | 260 | 400 | 26 | 120 HB | 11 % IACS |
+ARThis page Hot rolled | Cheapest hot-finished tube where the mill controls rolling temperature; used for low-duty structural or conveying lines. | 270 | 430 | 26 | 130 HB | 11 % IACS |
Stress relieved | Balanced condition: keeps most cold-drawn strength and precision but restores enough ductility for bending and flaring of hydraulic lines. | 370 | 480 | 16 | 150 HB | 11 % IACS |
Cold drawn | Highest strength and tightest dimensional tolerance; pick for hydraulic/pneumatic precision tube where no further forming is required. | 460 | 550 | 9 | 165 HB | — |
What is P235TR2 +AR?
P235TR2 +AR is P235TR2 heat treated to +AR — cheapest hot-finished tube where the mill controls rolling temperature; used for low-duty structural or conveying lines. P235TR2 +AR has a yield strength of 270 MPa (39.2 ksi) and a tensile strength of 430 MPa (62.4 ksi) — weaker than 91% of steel grades. Elongation at break is 26% and the elastic modulus is 210 GPa (30.5 Msi). P235TR2 +AR 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). +N is the default condition FabDigit quotes; +AR is available on request or by drawing note.
Advantages
- Conducts heat well — 52 W/m·K (30 BTU/hr·ft·°F), better than 98% of steel grades
- High electrical conductivity — 11 % IACS, better than 98% of steel grades
- Readily welded — 95/100, better than 97% of steel grades
- Forms and bends easily — 80/100, better than 93% of steel grades
- Ductile — tolerates forming and impact — 26%, better than 82% of steel grades
Limitations
- Low strength — 270 MPa (39.2 ksi), worse than 91% of steel grades
- Limited service temperature — 300°C (572 °F), worse than 78% of steel grades
P235TR2 +AR properties
Typical room-temperature values for P235TR2 +AR; 22 are specific to this condition. Other listed values are P235TR2 reference data and may not represent this condition. Bars are the position among steel grades.
Physical3
P235TR2 +AR 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
P235TR2 +AR has a yield strength of 270 MPa (39.2 ksi) and a tensile strength of 430 MPa (62.4 ksi) — weaker than 91% of steel grades. Elongation at break is 26% and the elastic modulus is 210 GPa (30.5 Msi).
Thermal6
P235TR2 +AR is rated for continuous service to 300°C (572 °F). It conducts heat at 52 W/m·K (30 BTU/hr·ft·°F), better than 98% of steel grades. Thermal expansion is 12.2 µm/m·K (6.78 µin/in·°F).
Electrical3
P235TR2 +AR conducts electricity at 11 % IACS, better than 98% of steel grades.
Chemical & Environmental3
Corrosion resistance is not recommended (10/100), worse than 86% of steel grades.
Sustainability4
Producing a kilogram of P235TR2 +AR takes about 25 MJ of energy and emits 2.1 kg of CO₂ — less than 82% of steel grades. Typical recycled content is 25%.
Manufacturability8
P235TR2 +AR's machinability is good (58/100, better than 75% of steel grades); weldability excellent (95/100); formability very good (80/100).
Values are nominal handbook figures for design screening. Confirm any required mill or lot documentation when quoting.
Working with P235TR2 +AR
Is P235TR2 easy to machine?
Machines easily but is gummy in the annealed state — use sharp positive-rake tooling, high speed and good chip breaking; cold-drawn (+C) tube cuts cleaner than +A.
Can P235TR2 be welded?
Excellent weldability by TIG, MIG, SAW and resistance methods with CEV ≤0.35; no preheat below ~30 mm wall, use ER70S-6 / E7018 class fillers.
Can P235TR2 be formed, bent or molded?
Very good cold bending, flaring and expansion in +N/+A/+SR; cold-drawn +C tube should be stress relieved before tight-radius bending to avoid cracking.
What surface finishes work on P235TR2?
No anodizing; protect with zinc plating, hot-dip galvanizing, phosphate + oil or epoxy paint — bare tube rusts within days in humid storage.
P235TR2 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 |
|---|---|---|
| C≤0.16 % for t ≤ 16 mm per EN 10216-1 | ≤ 0.16 | 0.13 |
| Si | ≤ 0.35 | 0.2 |
| Mn | 0.4 – 1.2 | 0.7 |
| P | ≤ 0.03 | 0.02 |
| S | ≤ 0.02 | 0.01 |
| Crresidual | ≤ 0.3 | 0.05 |
| Curesidual | ≤ 0.3 | 0.1 |
| Niresidual | ≤ 0.3 | 0.05 |
| Moresidual | ≤ 0.08 | 0.01 |
| Nbmicro-alloy limit | ≤ 0.05 | 0.01 |
| Ti | ≤ 0.04 | 0.01 |
| V | ≤ 0.05 | 0.01 |
| Altotal Al, fully killed / fine grain | ≥ 0.02 | 0.03 |
| Fe | balance | — |
P235TR2 +AR — frequently asked
What is P235TR2 +AR used for?
P235TR2 +AR is typically used for hydraulic cylinder barrels, pneumatic cylinder tubes, machine tool tubing and automotive fluid lines. In short: tight-tolerance precision tube; excellent weldability and formability; cold-drawn hydraulic tube standard.
What is the yield strength of P235TR2 +AR?
P235TR2 +AR has a typical yield strength of 270 MPa (39.2 ksi) and a tensile strength of 430 MPa (62.4 ksi) — weaker than 91% of steel grades. Strength varies by condition: see the 7 listed tempers.
Is P235TR2 +AR easy to machine?
Reasonably — machinability is rated good (58/100, better than 75% of steel grades). Machines easily but is gummy in the annealed state — use sharp positive-rake tooling, high speed and good chip breaking; cold-drawn (+C) tube cuts cleaner than +A.
Can P235TR2 +AR be welded?
Yes — weldability is rated excellent (95/100). Excellent weldability by TIG, MIG, SAW and resistance methods with CEV ≤0.35; no preheat below ~30 mm wall, use ER70S-6 / E7018 class fillers.
What surface finishes work on P235TR2 +AR?
No anodizing; protect with zinc plating, hot-dip galvanizing, phosphate + oil or epoxy paint — bare tube rusts within days in humid storage.
Can P235TR2 +AR be formed, bent or molded?
Very good cold bending, flaring and expansion in +N/+A/+SR; cold-drawn +C tube should be stress relieved before tight-radius bending to avoid cracking.
What is the maximum service temperature of P235TR2 +AR?
P235TR2 +AR is rated for continuous use to about 300°C (572 °F). Strength falls off well before that limit — check the elevated-temperature data for load-bearing parts.
Sources
- EN 10216-1 Seamless steel tubes for pressure purposes — non-alloy steel tubes with specified room temperature properties — CEN (2013)
- EN 10217-1 Welded steel tubes for pressure purposes — non-alloy steel tubes with specified room temperature properties — CEN (2019)
- EN 10305-1 Steel tubes for precision applications — seamless cold drawn tubes — CEN (2016)
- EN 10027-2 Designation systems for steels — numerical system (1.0255) — CEN (2015)
- ASM Handbook Vol.1 — Properties and Selection: Irons, Steels and High-Performance Alloys — ASM International (1990)
- ASM Handbook Vol.16 — Machining — ASM International (1989)
- worldsteel LCI data for steel products — World Steel Association (2023)
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.