Steel P195TR2 +SR (Stress relieved)
Heat-treated state
EN 1.0108
Cold-drawn tube given a sub-critical stress relief: keeps close tolerances and a good surface while restoring most ductility and impact toughness.
Values for the +SR condition
Other P195TR2 tempers and conditions
P195TR2 is listed in 5 conditions; see the grade overview at P195TR2.
Compare all 5 conditionsHide
| Condition · open for datasheet | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness | Conductivity |
|---|---|---|---|---|---|---|
Annealed | Softest condition, used when heavy cold bending, flaring or further tube forming is planned before final normalizing. | 210 | 340 | 36 | 105 HB | 10.8 % IACS |
+NDefault Normalized | Default stock condition for pressure tubing: uniform fine-grain ferrite-pearlite giving guaranteed +20 °C impact energy and full weldability. | 235 | 370 | 32 | 115 HB | — |
Hot rolled | Hot-finished tube supplied as rolled when the mill can demonstrate the normalized-condition properties; slightly coarser, more scattered properties than +N. | 240 | 380 | 30 | 120 HB | 10.5 % IACS |
+SRThis page Stress relieved | Cold-drawn tube given a sub-critical stress relief: keeps close tolerances and a good surface while restoring most ductility and impact toughness. | 280 | 400 | 24 | 130 HB | 10.5 % IACS |
Cold drawn | Choose for precision hydraulic/mechanical tubing where higher strength and tight dimensions matter more than impact toughness; not the pressure-code delivery condition. | 390 | 470 | 12 | 150 HB | 10.3 % IACS |
What is P195TR2 +SR?
P195TR2 +SR is P195TR2 heat treated to +SR — cold-drawn tube given a sub-critical stress relief: keeps close tolerances and a good surface while restoring most ductility and impact toughness. P195TR2 +SR has a yield strength of 280 MPa (40.6 ksi) and a tensile strength of 400 MPa (58 ksi) — weaker than 90% of steel grades. Elongation at break is 24% and the elastic modulus is 210 GPa (30.5 Msi). P195TR2 +SR has a density of 7.85 g/cm³ (0.284 lb/in³), heavier than 56% of steel grades. It melts at 1,490°C (2,714 °F). +N is the default condition FabDigit quotes; +SR 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
- Readily welded — 93/100, better than 95% of steel grades
- Low embodied carbon — 1.9 kg CO₂/kg, better than 92% of steel grades
- Forms and bends easily — 75/100, better than 90% of steel grades
- High electrical conductivity — 10.5 % IACS, better than 89% of steel grades
Limitations
- Low strength — 280 MPa (40.6 ksi), worse than 90% of steel grades
- Hard to polish — 45/100, worse than 84% of steel grades
- Limited service temperature — 300°C (572 °F), worse than 78% of steel grades
P195TR2 +SR properties
Typical room-temperature values for P195TR2 +SR; 22 are specific to this condition. Other listed values are P195TR2 reference data and may not represent this condition. Bars are the position among steel grades.
Physical3
P195TR2 +SR has a density of 7.85 g/cm³ (0.284 lb/in³), heavier than 56% of steel grades. It melts at 1,490°C (2,714 °F).
Mechanical16
P195TR2 +SR has a yield strength of 280 MPa (40.6 ksi) and a tensile strength of 400 MPa (58 ksi) — weaker than 90% of steel grades. Elongation at break is 24% and the elastic modulus is 210 GPa (30.5 Msi).
Thermal6
P195TR2 +SR 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 µm/m·K (6.67 µin/in·°F).
Electrical3
P195TR2 +SR conducts electricity at 10.5 % IACS, better than 89% of steel grades.
Chemical & Environmental3
Corrosion resistance is not recommended (10/100), worse than 86% of steel grades.
Sustainability4
Producing a kilogram of P195TR2 +SR takes about 25 MJ of energy and emits 1.9 kg of CO₂ — less than 82% of steel grades. Typical recycled content is 25%.
Manufacturability7
P195TR2 +SR's machinability is good (58/100, better than 75% of steel grades); weldability excellent (93/100); formability very good (75/100).
Values are nominal handbook figures for design screening. Confirm any required mill or lot documentation when quoting.
Working with P195TR2 +SR
Is P195TR2 easy to machine?
Soft and gummy — use sharp positive-rake tooling, higher speeds and good coolant to avoid built-up edge; rating ≈70% of AISI 1212.
Can P195TR2 be welded?
Excellent weldability by TIG/MIG/SMAW/resistance methods with CEV ≈0.30; no preheat needed below ~20 mm, ER70S-2/-6 or E7018 consumables.
Can P195TR2 be formed, bent or molded?
Very good cold formability — tube bending, flaring, expanding and flattening per EN 10216-1 are routine in +N or +A condition; normalize after heavy cold work.
What surface finishes work on P195TR2?
No anodizing; protect by shot-blast + primer/paint, hot-dip galvanizing, zinc or phosphate coating, or internal boiler-water treatment.
P195TR2 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 |
|---|---|---|
| Cladle analysis, EN 10216-1 | ≤ 0.13 | 0.09 |
| Si | ≤ 0.35 | 0.2 |
| Mn | ≤ 0.7 | 0.45 |
| P | ≤ 0.03 | 0.02 |
| S | ≤ 0.02 | 0.01 |
| Crresidual | ≤ 0.3 | — |
| Curesidual | ≤ 0.3 | — |
| Niresidual | ≤ 0.3 | — |
| Moresidual | ≤ 0.08 | — |
| Altotal Al, fully killed / fine-grain practice | ≥ 0.02 | 0.03 |
| Fe | balance | — |
P195TR2 +SR — frequently asked
What is P195TR2 +SR used for?
P195TR2 +SR is typically used for boiler tubes, pressure vessel tubing, steam and hot-water piping and heat exchangers. In short: impact-tested P195 variant; weldability score 95; better cold toughness than TR1.
What is the yield strength of P195TR2 +SR?
P195TR2 +SR has a typical yield strength of 280 MPa (40.6 ksi) and a tensile strength of 400 MPa (58 ksi) — weaker than 90% of steel grades. Strength varies by condition: see the 5 listed tempers.
Is P195TR2 +SR easy to machine?
Reasonably — machinability is rated good (58/100, better than 75% of steel grades). Soft and gummy — use sharp positive-rake tooling, higher speeds and good coolant to avoid built-up edge; rating ≈70% of AISI 1212.
Can P195TR2 +SR be welded?
Yes — weldability is rated excellent (93/100). Excellent weldability by TIG/MIG/SMAW/resistance methods with CEV ≈0.30; no preheat needed below ~20 mm, ER70S-2/-6 or E7018 consumables.
What surface finishes work on P195TR2 +SR?
No anodizing; protect by shot-blast + primer/paint, hot-dip galvanizing, zinc or phosphate coating, or internal boiler-water treatment.
Can P195TR2 +SR be formed, bent or molded?
Very good cold formability — tube bending, flaring, expanding and flattening per EN 10216-1 are routine in +N or +A condition; normalize after heavy cold work.
What is the maximum service temperature of P195TR2 +SR?
P195TR2 +SR 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 10027-2 / Werkstoffnummer 1.0108 designation system — CEN (2015)
- 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)
- worldsteel Life Cycle Inventory — hot rolled steel — 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.