Titanium ERTi-2-SR (Stress relieved)
Heat-treated state
GB ERTi2 · ISO 24034 Ti2
Pick when residual stress must be cut for dimensional stability or stress-corrosion service (e.g. hot chloride, methanol) without softening much.
Values for the SR condition
Other ERTi-2 tempers and conditions
ERTi-2 is listed in 3 conditions; see the grade overview at ERTi-2.
Compare all 3 conditionsHide
| Condition · open for datasheet | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness | Conductivity |
|---|---|---|---|---|---|---|
Annealed | Softest, most ductile condition; used when the whole fabrication is annealed for forming or maximum toughness/hydrogen control. | 340 | 450 | 28 | 145 HB | 3.1 % IACS |
SRThis page Stress relieved | Pick when residual stress must be cut for dimensional stability or stress-corrosion service (e.g. hot chloride, methanol) without softening much. | 355 | 465 | 25 | 150 HB | 3.1 % IACS |
AWDefault As-welded deposit | Default condition of the deposited weld metal straight from GTAW/GMAW with full argon shielding and trailing/back purge. | 380 | 480 | 22 | 155 HB | — |
What is ERTi-2-SR?
ERTi-2-SR is ERTi-2 heat treated to SR — pick when residual stress must be cut for dimensional stability or stress-corrosion service (e.g. hot chloride, methanol) without softening much. ERTi-2-SR has a yield strength of 355 MPa (51.5 ksi) and a tensile strength of 465 MPa (67.4 ksi) — weaker than 77% of titanium grades. Elongation at break is 25% and the elastic modulus is 105 GPa (15.2 Msi). ERTi-2-SR has a density of 4.51 g/cm³ (0.163 lb/in³), heavier than 57% of titanium grades. It melts at 1,660°C (3,020 °F). AW is the default condition FabDigit quotes; SR is available on request or by drawing note.
Advantages
- Easy to machine — 40/100, better than 93% of titanium grades
- Readily welded — 90/100, better than 93% of titanium grades
- Ductile — tolerates forming and impact — 25%, better than 82% of titanium grades
- Forms and bends easily — 72/100, better than 78% of titanium grades
- High electrical conductivity — 3.1 % IACS, better than 75% of titanium grades
Limitations
- Low strength — 355 MPa (51.5 ksi), worse than 77% of titanium grades
ERTi-2-SR properties
Typical room-temperature values for ERTi-2-SR; 22 are specific to this condition. Other listed values are ERTi-2 reference data and may not represent this condition. Bars are the position among titanium grades.
Physical3
ERTi-2-SR has a density of 4.51 g/cm³ (0.163 lb/in³), heavier than 57% of titanium grades. It melts at 1,660°C (3,020 °F).
Mechanical16
ERTi-2-SR has a yield strength of 355 MPa (51.5 ksi) and a tensile strength of 465 MPa (67.4 ksi) — weaker than 77% of titanium grades. Elongation at break is 25% and the elastic modulus is 105 GPa (15.2 Msi).
Thermal6
ERTi-2-SR is rated for continuous service to 315°C (599 °F). It conducts heat at 16.4 W/m·K (9.48 BTU/hr·ft·°F), better than 71% of titanium grades. Thermal expansion is 8.6 µm/m·K (4.78 µin/in·°F).
Electrical3
ERTi-2-SR conducts electricity at 3.1 % IACS, better than 75% of titanium grades.
Chemical & Environmental3
Corrosion resistance is excellent (92/100), better than 53% of titanium grades.
Sustainability4
Producing a kilogram of ERTi-2-SR takes about 650 MJ of energy and emits 40 kg of CO₂ — less than 75% of titanium grades. Typical recycled content is 20%.
Manufacturability7
ERTi-2-SR's machinability is fair (40/100, better than 93% of titanium grades); weldability excellent (90/100); formability very good (72/100).
Values are nominal handbook figures for design screening. Confirm any required mill or lot documentation when quoting.
Working with ERTi-2-SR
Is ERTi-2 easy to machine?
Weld metal machines like CP Ti Gr.2 — slow speed, high feed, sharp carbide tools, flood coolant, never dwell (galling and fire risk with fine chips).
Can ERTi-2 be welded?
GTAW/GMAW/PAW with 99.99 % argon or Ar-He, trailing shield and full back purge; keep interpass <150 °C and joints surgically clean — straw/blue tint is acceptable, grey/white powder means scrap and rework.
Can ERTi-2 be formed, bent or molded?
Deposited metal is ductile enough for cold bending at generous radii (≥3–4 t); hot forming 600–750 °C in the annealed condition to avoid springback.
What surface finishes work on ERTi-2?
Pickle in HNO3/HF or abrasive-blast plus pickle to remove alpha case; colour anodizing or thermal oxidation for identification; avoid iron contamination from steel brushes/grinding media.
ERTi-2 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 | ≤ 0.03 | 0.02 |
| Ocontrolled range — main strength contributor | 0.08 – 0.16 | 0.12 |
| N | ≤ 0.02 | 0.01 |
| H | ≤ 0.01 | 0 |
| Fe | ≤ 0.2 | 0.1 |
| Others (each)residual elements, each | ≤ 0.05 | — |
| Others (total)residual elements, total | ≤ 0.4 | — |
| Ti | balance | — |
ERTi-2-SR — frequently asked
What is ERTi-2-SR used for?
ERTi-2-SR is typically used for welding CP Ti Grade 2 vessels, marine and desalination equipment, aerospace ducting and general titanium fabrication. In short: most widely used Ti filler; matches CP Grade 2 strength; highest-ductility CP deposit.
What is the yield strength of ERTi-2-SR?
ERTi-2-SR has a typical yield strength of 355 MPa (51.5 ksi) and a tensile strength of 465 MPa (67.4 ksi) — weaker than 77% of titanium grades. Strength varies by condition: see the 3 listed tempers.
Is ERTi-2-SR easy to machine?
Not especially — machinability is rated fair (40/100, better than 93% of titanium grades). Weld metal machines like CP Ti Gr.2 — slow speed, high feed, sharp carbide tools, flood coolant, never dwell (galling and fire risk with fine chips).
Can ERTi-2-SR be welded?
Yes — weldability is rated excellent (90/100). GTAW/GMAW/PAW with 99.99 % argon or Ar-He, trailing shield and full back purge; keep interpass <150 °C and joints surgically clean — straw/blue tint is acceptable, grey/white powder means scrap and rework.
What surface finishes work on ERTi-2-SR?
Pickle in HNO3/HF or abrasive-blast plus pickle to remove alpha case; colour anodizing or thermal oxidation for identification; avoid iron contamination from steel brushes/grinding media.
Can ERTi-2-SR be formed, bent or molded?
Deposited metal is ductile enough for cold bending at generous radii (≥3–4 t); hot forming 600–750 °C in the annealed condition to avoid springback.
What is the maximum service temperature of ERTi-2-SR?
ERTi-2-SR is rated for continuous use to about 315°C (599 °F). Strength falls off well before that limit — check the elevated-temperature data for load-bearing parts.
What is the difference between ERTi-2-AW and ERTi-2-ANN?
AW is the default condition — default condition of the deposited weld metal straight from GTAW/GMAW with full argon shielding and trailing/back purge. ANN: softest, most ductile condition; used when the whole fabrication is annealed for forming or maximum toughness/hydrogen control. Yield strength is 380 MPa in AW versus 340 MPa in ANN.
Sources
- AWS A5.16/A5.16M — Titanium and Titanium-Alloy Welding Electrodes and Rods — AWS (2013)
- ASTM B265 / B348 — Titanium and Titanium Alloy Strip, Sheet, Plate and Bars (Grade 2) — ASTM (2020)
- ISO 24034 — Welding consumables, solid wires and rods for fusion welding of titanium — ISO (2020)
- ASM Handbook Vol.2 — Properties and Selection: Nonferrous Alloys — ASM International (1990)
- ASM Handbook Vol.6 / Vol.13B — Welding and Corrosion of Titanium — ASM International (1993)
- CP titanium filler wire datasheets — / Titanium Industries (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.