Titanium ERTi-1 AW-SR
Heat-treated state
GB ERTi1 · ISO 24034 Ti1
Use for weldments needing residual-stress reduction before machining or for SCC-sensitive chemical service; strength drops slightly, ductility recovers.
Values for the AW-SR condition
Other ERTi-1 tempers and conditions
ERTi-1 is listed in 2 conditions; see the grade overview at ERTi-1.
- AW-SR
- AW
Compare all 2 conditionsHide
| Condition · open for datasheet | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness | Conductivity |
|---|---|---|---|---|---|---|
AW-SRThis page as-welded then stress-relieved (480–595 °C, inert/vacuum) | Use for weldments needing residual-stress reduction before machining or for SCC-sensitive chemical service; strength drops slightly, ductility recovers. | 195 | 290 | 33 | 105 HB | 3.6 % IACS |
AWDefault As-welded deposit | Default reference condition: properties of the undiluted GTAW deposit made with full inert-gas shielding. | 210 | 300 | 30 | 110 HB | — |
What is ERTi-1 AW-SR?
ERTi-1 AW-SR is ERTi-1 heat treated to AW-SR — use for weldments needing residual-stress reduction before machining or for SCC-sensitive chemical service; strength drops slightly, ductility recovers. ERTi-1 AW-SR has a yield strength of 195 MPa (28.3 ksi) and a tensile strength of 290 MPa (42.1 ksi) — weaker than 100% of titanium grades. Elongation at break is 33% and the elastic modulus is 103 GPa (14.9 Msi). ERTi-1 AW-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; AW-SR is available on request or by drawing note.
Advantages
- Ductile — tolerates forming and impact — 33%, better than 101% of titanium grades
- Readily welded — 95/100, better than 100% of titanium grades
- Conducts heat well — 20 W/m·K (11.6 BTU/hr·ft·°F), better than 98% of titanium grades
- High electrical conductivity — 3.6 % IACS, better than 98% of titanium grades
- Forms and bends easily — 88/100, better than 94% of titanium grades
Limitations
- Low strength — 195 MPa (28.3 ksi), worse than 100% of titanium grades
ERTi-1 AW-SR properties
Typical room-temperature values for ERTi-1 AW-SR; 22 are specific to this condition. Other listed values are ERTi-1 reference data and may not represent this condition. Bars are the position among titanium grades.
Physical3
ERTi-1 AW-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-1 AW-SR has a yield strength of 195 MPa (28.3 ksi) and a tensile strength of 290 MPa (42.1 ksi) — weaker than 100% of titanium grades. Elongation at break is 33% and the elastic modulus is 103 GPa (14.9 Msi).
Thermal6
ERTi-1 AW-SR is rated for continuous service to 300°C (572 °F). It conducts heat at 20 W/m·K (11.6 BTU/hr·ft·°F), better than 98% of titanium grades. Thermal expansion is 8.6 µm/m·K (4.78 µin/in·°F).
Electrical3
ERTi-1 AW-SR conducts electricity at 3.6 % IACS, better than 98% of titanium grades.
Chemical & Environmental3
Corrosion resistance is excellent (92/100), better than 53% of titanium grades.
Sustainability4
Producing a kilogram of ERTi-1 AW-SR takes about 700 MJ of energy and emits 45 kg of CO₂ — more than 74% of titanium grades. Typical recycled content is 15%.
Manufacturability8
ERTi-1 AW-SR's machinability is fair (40/100, better than 93% of titanium grades); weldability excellent (95/100); formability excellent (88/100).
Values are nominal handbook figures for design screening. Confirm any required mill or lot documentation when quoting.
Working with ERTi-1 AW-SR
Is ERTi-1 easy to machine?
Soft and gummy — sharp, positive-rake carbide tools, low speed with heavy flood coolant to avoid galling, smearing and fire risk from fine chips.
Can ERTi-1 be welded?
GTAW/GMAW/PAW with 99.995 % argon or Ar-He, trailing shield and full back purge; keep interpass <150 °C and weld area free of oil, moisture and iron pickup — a silver/straw weld colour is acceptable, blue/grey is reject.
Can ERTi-1 be formed, bent or molded?
Wire draws and bends readily; deposited metal is the most formable CP Ti — cold-form generously but allow high springback and avoid iron-contaminating tooling.
What surface finishes work on ERTi-1?
Pickle in HNO3/HF to remove alpha case and iron smear, then colour-anodize or leave bare; do not shot-blast with steel media.
ERTi-1 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 |
|---|---|---|
| CAWS A5.16 max | ≤ 0.03 | 0.01 |
| Olowest oxygen of the ERTi CP series | ≤ 0.1 | 0.06 |
| N | ≤ 0.01 | 0.01 |
| Hhydrogen embrittlement control | ≤ 0.01 | 0 |
| Fe | ≤ 0.1 | 0.04 |
| Other, eachresidual elements | ≤ 0.1 | — |
| Other, totalresidual elements | ≤ 0.4 | — |
| Ti≈99.8 % Ti | balance | — |
ERTi-1 AW-SR — frequently asked
What is ERTi-1 AW-SR used for?
ERTi-1 AW-SR is typically used for welding CP Ti Grade 1 tanks, chemical processing equipment, deep-drawn titanium components and corrosion-resistant piping. In short: purest CP titanium filler; maximum weld-metal ductility; matches Grade 1 base metal.
What is the yield strength of ERTi-1 AW-SR?
ERTi-1 AW-SR has a typical yield strength of 195 MPa (28.3 ksi) and a tensile strength of 290 MPa (42.1 ksi) — weaker than 100% of titanium grades. Strength varies by condition: see the 2 listed tempers.
Is ERTi-1 AW-SR easy to machine?
Not especially — machinability is rated fair (40/100, better than 93% of titanium grades). Soft and gummy — sharp, positive-rake carbide tools, low speed with heavy flood coolant to avoid galling, smearing and fire risk from fine chips.
Can ERTi-1 AW-SR be welded?
Yes — weldability is rated excellent (95/100). GTAW/GMAW/PAW with 99.995 % argon or Ar-He, trailing shield and full back purge; keep interpass <150 °C and weld area free of oil, moisture and iron pickup — a silver/straw weld colour is acceptable, blue/grey is reject.
What surface finishes work on ERTi-1 AW-SR?
Pickle in HNO3/HF to remove alpha case and iron smear, then colour-anodize or leave bare; do not shot-blast with steel media.
Can ERTi-1 AW-SR be formed, bent or molded?
Wire draws and bends readily; deposited metal is the most formable CP Ti — cold-form generously but allow high springback and avoid iron-contaminating tooling.
What is the maximum service temperature of ERTi-1 AW-SR?
ERTi-1 AW-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.
What is the difference between ERTi-1-AW and ERTi-1 AW-SR?
AW is the default condition — default reference condition: properties of the undiluted GTAW deposit made with full inert-gas shielding. AW-SR: use for weldments needing residual-stress reduction before machining or for SCC-sensitive chemical service; strength drops slightly, ductility recovers. Yield strength is 210 MPa in AW versus 195 MPa in AW-SR.
Sources
- AWS A5.16/A5.16M — Titanium and Titanium-Alloy Welding Electrodes and Rods — AWS (2013)
- ASTM B348 / B265 — Titanium and Titanium Alloy Bars and Strip/Plate (Grade 1) — ASTM (2021)
- 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.13B — Corrosion: Materials (Titanium) — ASM International (2005)
- CP titanium filler wire data (Grade 1 / ERTi-1) — TIMET / Baoji titanium producers (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.