Titanium Grade 11 Annealed
Temper · default condition
ASTM Grade 11 · UNS R52250
Standard stocked condition for all product forms; maximum ductility and corrosion performance.
Values for the Annealed condition
Other Grade 11 tempers and conditions
Grade 11 is listed in 4 conditions; see the grade overview at Grade 11.
- Annealed
- FORGED-ANN
- AW
- CW-SR
Compare all 4 conditionsHide
| Condition · open for datasheet | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness | Conductivity |
|---|---|---|---|---|---|---|
AnnealedDefaultThis page mill annealed sheet, plate, bar and tube | Standard stocked condition for all product forms; maximum ductility and corrosion performance. | 220 | 330 | 30 | 120 HB | — |
Forged and annealed (flanges, fittings, valve bodies) | Near-net forged corrosion hardware per ASTM B381 F11, annealed after forging. | 225 | 335 | 28 | 125 HB | 3.5 % IACS |
As-welded deposit | Property set for welded tube (ASTM B338/B337) and autogenous joints; weld slightly stronger, less ductile than base. | 240 | 345 | 22 | 135 HB | 3.5 % IACS |
Cold worked + stress relieved | Choose when higher strength and straightness are needed and forming is already complete. | 370 | 450 | 18 | 160 HB | 3.4 % IACS |
What is Grade 11 Annealed?
Grade 11 Annealed is Grade 11 in the Annealed temper — standard stocked condition for all product forms; maximum ductility and corrosion performance. Grade 11 Annealed has a yield strength of 220 MPa (31.9 ksi) and a tensile strength of 330 MPa (47.9 ksi) — weaker than 97% of titanium grades. Elongation at break is 30% and the elastic modulus is 103 GPa (14.9 Msi). Grade 11 Annealed 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).
Advantages
- Easy to machine — 45/100, better than 100% of titanium grades
- Forms and bends easily — 92/100, better than 99% of titanium grades
- Tough — resists crack growth — 90 MPa·√m (81.9 ksi·√in), better than 97% of titanium grades
- High electrical conductivity — 3.5 % IACS, better than 97% of titanium grades
- Readily welded — 92/100, better than 97% of titanium grades
Limitations
- Low strength — 220 MPa (31.9 ksi), worse than 97% of titanium grades
Grade 11 Annealed properties
Typical room-temperature values for Grade 11 Annealed; 11 are specific to this condition. Other listed values are Grade 11 reference data and may not represent this condition. Bars are the position among titanium grades.
Physical3
Grade 11 Annealed 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
Grade 11 Annealed has a yield strength of 220 MPa (31.9 ksi) and a tensile strength of 330 MPa (47.9 ksi) — weaker than 97% of titanium grades. Elongation at break is 30% and the elastic modulus is 103 GPa (14.9 Msi).
Thermal6
Grade 11 Annealed is rated for continuous service to 300°C (572 °F). It conducts heat at 16.5 W/m·K (9.53 BTU/hr·ft·°F), better than 80% of titanium grades. Thermal expansion is 8.6 µm/m·K (4.78 µin/in·°F).
Electrical3
Grade 11 Annealed conducts electricity at 3.5 % IACS, better than 97% of titanium grades.
Chemical & Environmental3
Corrosion resistance is excellent (96/100), better than 92% of titanium grades.
Sustainability4
Producing a kilogram of Grade 11 Annealed takes about 700 MJ of energy and emits 40 kg of CO₂ — more than 74% of titanium grades. Typical recycled content is 20%.
Manufacturability7
Grade 11 Annealed's machinability is fair (45/100, better than 100% of titanium grades); weldability excellent (92/100); formability excellent (92/100).
Common Calculations5
Values are nominal handbook figures for design screening. Confirm any required mill or lot documentation when quoting.
Working with Grade 11 Annealed
Is Grade 11 easy to machine?
Machine like CP titanium: sharp, positive-rake carbide, low speed (20–45 m/min), heavy rigid feed, flood coolant; avoid dwelling to prevent work hardening and smearing.
Can Grade 11 be welded?
Excellent GTAW/plasma/EB weldability with matching Gr11 or Gr1 filler, provided full argon shielding of the puddle, trailing shield and back purge to below ~430 °C; no post-weld heat treatment normally required.
Can Grade 11 be formed, bent or molded?
Best cold formability of the CP grades — deep drawing, spinning and tight bend radii (about 2–3 t) are practical; allow for springback and warm form at 150–300 °C for severe shapes.
What surface finishes work on Grade 11?
Pickle in HNO3/HF to remove alpha case and iron pick-up, then passivate or colour-anodize; avoid steel tooling contamination and never use chlorinated or fluoride-bearing cleaners.
Grade 11 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 |
|---|---|---|
| Pdpalladium addition that stabilises the passive film | 0.12 – 0.25 | 0.15 |
| Olow-oxygen (Grade 1 base) for maximum ductility | ≤ 0.18 | 0.1 |
| Fe | ≤ 0.2 | 0.08 |
| C | ≤ 0.08 | 0.02 |
| N | ≤ 0.03 | 0.01 |
| H0.0125 % max for bar/billet per ASTM B348 | ≤ 0.02 | 0 |
| Residuals, eachtotal residuals 0.4 % max | ≤ 0.1 | — |
| Ti | balance | — |
Grade 11 Annealed — frequently asked
What is Grade 11 Annealed used for?
Grade 11 Annealed is typically used for deep-drawn corrosion-resistant vessels, chemical process piping and anode substrates. In short: most formable CP titanium; palladium crevice resistance; lowest strength CP grade.
What is the yield strength of Grade 11 Annealed?
Grade 11 Annealed has a typical yield strength of 220 MPa (31.9 ksi) and a tensile strength of 330 MPa (47.9 ksi) — weaker than 97% of titanium grades. Strength varies by condition: see the 4 listed tempers.
Is Grade 11 Annealed easy to machine?
Reasonably — machinability is rated fair (45/100, better than 100% of titanium grades). Machine like CP titanium: sharp, positive-rake carbide, low speed (20–45 m/min), heavy rigid feed, flood coolant; avoid dwelling to prevent work hardening and smearing.
Can Grade 11 Annealed be welded?
Yes — weldability is rated excellent (92/100). Excellent GTAW/plasma/EB weldability with matching Gr11 or Gr1 filler, provided full argon shielding of the puddle, trailing shield and back purge to below ~430 °C; no post-weld heat treatment normally required.
What surface finishes work on Grade 11 Annealed?
Pickle in HNO3/HF to remove alpha case and iron pick-up, then passivate or colour-anodize; avoid steel tooling contamination and never use chlorinated or fluoride-bearing cleaners.
Can Grade 11 Annealed be formed, bent or molded?
Best cold formability of the CP grades — deep drawing, spinning and tight bend radii (about 2–3 t) are practical; allow for springback and warm form at 150–300 °C for severe shapes.
What is the maximum service temperature of Grade 11 Annealed?
Grade 11 Annealed 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 Grade 11 Annealed and Grade 11 CW-SR?
Annealed is the default condition — standard stocked condition for all product forms; maximum ductility and corrosion performance. CW-SR: choose when higher strength and straightness are needed and forming is already complete. Yield strength is 220 MPa in Annealed versus 370 MPa in CW-SR.
Sources
- ASTM B265 — Titanium and Titanium Alloy Strip, Sheet, and Plate — ASTM International (2020)
- ASTM B348 — Titanium and Titanium Alloy Bars and Billets — ASTM International (2021)
- ASTM B338/B337 — Titanium Tube for Condensers and Heat Exchangers — ASTM International (2019)
- ASTM B381 — Titanium and Titanium Alloy Forgings — ASTM International (2019)
- ASM Handbook Vol.2 — Properties and Selection: Nonferrous Alloys — ASM International (1990)
- Ti-Pd corrosion-resistant grade datasheets (Gr7/Gr11) — titanium mill 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.