Steel P235TR2
EN 1.0255
Low-carbon (≤0.16% C) non-alloy steel for seamless cold-drawn precision tubes with good weldability and cold formability; chosen for tight-tolerance hydraulic and pneumatic tubing rather than heavy pressure-vessel shells.
Reference datasheet — P235TR2 is not in the instant-quote catalog. Upload your part and an engineer will quote it in this grade or suggest the closest stocked equivalent.
Values for the +N condition
P235TR2 tempers and conditions
P235TR2 is supplied in 7 conditions, soft to hard. +N is the default FabDigit quotes; the values on this page are for it.
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 |
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?
Low-carbon (≤0.16% C) non-alloy steel for seamless cold-drawn precision tubes with good weldability and cold formability; chosen for tight-tolerance hydraulic and pneumatic tubing rather than heavy pressure-vessel shells. P235TR2 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). P235TR2 has a yield strength of 260 MPa (37.7 ksi) and a tensile strength of 420 MPa (60.9 ksi) — weaker than 92% of steel grades. Elongation at break is 28% and the elastic modulus is 210 GPa (30.5 Msi).
What is P235TR2 used for?
- hydraulic cylinder barrels
- pneumatic cylinder tubes
- machine tool tubing
- automotive fluid lines
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 — 85/100, better than 96% of steel grades
- Ductile — tolerates forming and impact — 28%, better than 89% of steel grades
Limitations
- Low strength — 260 MPa (37.7 ksi), worse than 92% of steel grades
- Limited service temperature — 300°C (572 °F), worse than 78% of steel grades
P235TR2 properties
Typical room-temperature values for P235TR2-+N; bars are the position among steel grades.
Physical3
P235TR2 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 has a yield strength of 260 MPa (37.7 ksi) and a tensile strength of 420 MPa (60.9 ksi) — weaker than 92% of steel grades. Elongation at break is 28% and the elastic modulus is 210 GPa (30.5 Msi).
Thermal6
P235TR2 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 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 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's machinability is good (60/100, better than 83% of steel grades); weldability excellent (95/100); formability excellent (85/100).
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. P235TR2 is highlighted; hover a dot for its name, or open the interactive family chart.
Working with P235TR2
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.
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 |
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.
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).
Organic Coating
Black / Phosphate
Thermal Spray
Equivalent designations
Standards and trade names that resolve to Steel P235TR2 in FabDigit's catalog. Equivalence is nominal — check the exact specification when certification matters.
- EN / DIN / Werkstoff-Nr.
- 1.0255
How much does P235TR2 cost?
P235TR2 is a budget-cost steel ($), cheaper than about 90% of the materials FabDigit quotes. Part price depends far more on geometry, tolerance and quantity than on the raw stock — upload a CAD file for a live quote.
P235TR2 — frequently asked
What is P235TR2 used for?
P235TR2 is typically used for hydraulic cylinder barrels, pneumatic cylinder tubes, machine tool tubing and automotive fluid lines. In short: tight-tolerance precision tube; excellent weldability and formability; cold-drawn hydraulic tube standard.
What is the yield strength of P235TR2?
P235TR2 has a typical yield strength of 260 MPa (37.7 ksi) and a tensile strength of 420 MPa (60.9 ksi) — weaker than 92% of steel grades. Strength varies by condition: see the 7 listed tempers.
Is P235TR2 easy to machine?
Reasonably — machinability is rated good (60/100, better than 83% of steel grades). Machines easily but is gummy in the annealed state — use sharp positive-rake tooling, high speed and good chip breaking; cold-drawn (+C) tube cuts cleaner than +A.
Can P235TR2 be welded?
Yes — weldability is rated excellent (95/100). Excellent weldability by TIG, MIG, SAW and resistance methods with CEV ≤0.35; no preheat below ~30 mm wall, use ER70S-6 / E7018 class fillers.
What surface finishes work on P235TR2?
No anodizing; protect with zinc plating, hot-dip galvanizing, phosphate + oil or epoxy paint — bare tube rusts within days in humid storage.
Can P235TR2 be formed, bent or molded?
Very good cold bending, flaring and expansion in +N/+A/+SR; cold-drawn +C tube should be stress relieved before tight-radius bending to avoid cracking.
What is the maximum service temperature of P235TR2?
P235TR2 is rated for continuous use to about 300°C (572 °F). Strength falls off well before that limit — check the elevated-temperature data for load-bearing parts.
How much does P235TR2 cost?
P235TR2 is a budget-cost steel ($), cheaper than about 90% 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.
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; 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.