Titanium Ti Grade 11-ANN (Annealed)
Heat-treated state · default condition
UNS R52250 · EN 3.7225
Standard stocked condition for corrosion service: maximum ductility and formability, meets ASTM B265/B338/B348 Grade 11.
Values for the ANN condition
Other Ti Grade 11 tempers and conditions
Ti Grade 11 is listed in 5 conditions; see the grade overview at Ti Grade 11.
Compare all 5 conditionsHide
| Condition · open for datasheet | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness | Conductivity |
|---|---|---|---|---|---|---|
Hot rolled and annealed plate | Pick for pressure-vessel plate, tube sheets and clad-liner stock where thickness > 6 mm. | 200 | 290 | 30 | 118 HB | 3.3 % IACS |
ANNDefaultThis page Annealed | Standard stocked condition for corrosion service: maximum ductility and formability, meets ASTM B265/B338/B348 Grade 11. | 210 | 300 | 32 | 120 HB | — |
As-welded deposit | Property set for welded Grade 11 tube (B338 welded) and autogenous GTAW joints in inert-gas-shielded fabrication. | 220 | 310 | 24 | 135 HB | 3.3 % IACS |
Cold worked and stress relieved | Use for machined parts, springs-clips and tube ends where residual stress and distortion must be removed without full softening. | 370 | 440 | 18 | 10 HRC | 3.2 % IACS |
Cold worked | Choose when higher strength and straightness are needed and forming is finished; ductility drops sharply. | 410 | 480 | 15 | 14 HRC | 3.2 % IACS |
What is Ti Grade 11-ANN?
Ti Grade 11-ANN is Ti Grade 11 heat treated to ANN — standard stocked condition for corrosion service: maximum ductility and formability, meets ASTM B265/B338/B348 Grade 11. Ti Grade 11-ANN has a yield strength of 210 MPa (30.5 ksi) and a tensile strength of 300 MPa (43.5 ksi) — weaker than 99% of titanium grades. Elongation at break is 32% and the elastic modulus is 103 GPa (14.9 Msi). Ti Grade 11-ANN 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
- Ductile — tolerates forming and impact — 32%, better than 98% of titanium grades
- Conducts heat well — 20 W/m·K (11.6 BTU/hr·ft·°F), better than 98% of titanium grades
- Low embodied carbon — 36 kg CO₂/kg, better than 98% of titanium grades
- Forms and bends easily — 90/100, better than 97% of titanium grades
- Readily welded — 90/100, better than 93% of titanium grades
Limitations
- Low strength — 210 MPa (30.5 ksi), worse than 99% of titanium grades
Ti Grade 11-ANN properties
Typical room-temperature values for Ti Grade 11-ANN; 15 are specific to this condition. Other listed values are Ti Grade 11 reference data and may not represent this condition. Bars are the position among titanium grades.
Physical3
Ti Grade 11-ANN 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
Ti Grade 11-ANN has a yield strength of 210 MPa (30.5 ksi) and a tensile strength of 300 MPa (43.5 ksi) — weaker than 99% of titanium grades. Elongation at break is 32% and the elastic modulus is 103 GPa (14.9 Msi).
Thermal6
Ti Grade 11-ANN 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
Ti Grade 11-ANN conducts electricity at 3.3 % IACS, better than 92% of titanium grades.
Chemical & Environmental3
Corrosion resistance is excellent (96/100), better than 92% of titanium grades.
Sustainability4
Producing a kilogram of Ti Grade 11-ANN takes about 620 MJ of energy and emits 36 kg of CO₂ — less than 97% of titanium grades. Typical recycled content is 25%.
Manufacturability8
Ti Grade 11-ANN's machinability is fair (38/100, better than 85% of titanium grades); weldability excellent (90/100); formability excellent (90/100).
Common Calculations5
Values are nominal handbook figures for design screening. Confirm any required mill or lot documentation when quoting.
Working with Ti Grade 11-ANN
Is Ti Grade 11 easy to machine?
Machine like CP Ti: low speed, heavy positive-rake sharp carbide, high feed and flood coolant to avoid galling, work hardening and chip fires.
Can Ti Grade 11 be welded?
Excellent GTAW/PAW/EBW weldability with trailing-shield and back-purge argon; keep the weld and HAZ below ~200 ppm oxygen pick-up (bright silver bead) and never weld in air.
Can Ti Grade 11 be formed, bent or molded?
Best cold formability of the CP grades — bend radii of ~2t are routine; allow for high springback or warm-form at 150–300 °C.
What surface finishes work on Ti Grade 11?
Pickle in HNO3/HF to remove alpha case and scale, then passivate; colour anodizing and electropolishing both work well, plating is rarely used.
Ti 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 for reducing-acid/crevice corrosion resistance | 0.12 – 0.25 | 0.15 |
| Fe | ≤ 0.2 | 0.08 |
| OGrade 1 oxygen level — governs strength | ≤ 0.18 | 0.1 |
| C | ≤ 0.08 | 0.02 |
| N | ≤ 0.03 | 0.01 |
| H0.015 max for sheet/plate; lower limits apply to bar/billet | ≤ 0.02 | 0.01 |
| Residuals (each)total residuals 0.4 max | ≤ 0.1 | — |
| Ti | balance | — |
Ti Grade 11-ANN — frequently asked
What is Ti Grade 11-ANN used for?
Ti Grade 11-ANN is typically used for chemical process piping, pressure vessels needing forming and corrosion resistance and desalination equipment. In short: most formable CP-family grade; grade 1 ductility with Pd corrosion resistance; lowest strength in family.
What is the yield strength of Ti Grade 11-ANN?
Ti Grade 11-ANN has a typical yield strength of 210 MPa (30.5 ksi) and a tensile strength of 300 MPa (43.5 ksi) — weaker than 99% of titanium grades. Strength varies by condition: see the 5 listed tempers.
Is Ti Grade 11-ANN easy to machine?
Not especially — machinability is rated fair (38/100, better than 85% of titanium grades). Machine like CP Ti: low speed, heavy positive-rake sharp carbide, high feed and flood coolant to avoid galling, work hardening and chip fires.
Can Ti Grade 11-ANN be welded?
Yes — weldability is rated excellent (90/100). Excellent GTAW/PAW/EBW weldability with trailing-shield and back-purge argon; keep the weld and HAZ below ~200 ppm oxygen pick-up (bright silver bead) and never weld in air.
What surface finishes work on Ti Grade 11-ANN?
Pickle in HNO3/HF to remove alpha case and scale, then passivate; colour anodizing and electropolishing both work well, plating is rarely used.
Can Ti Grade 11-ANN be formed, bent or molded?
Best cold formability of the CP grades — bend radii of ~2t are routine; allow for high springback or warm-form at 150–300 °C.
What is the maximum service temperature of Ti Grade 11-ANN?
Ti Grade 11-ANN 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 Ti Grade 11-ANN and Ti Grade 11-CW?
ANN is the default condition — standard stocked condition for corrosion service: maximum ductility and formability, meets ASTM B265/B338/B348 Grade 11. CW: choose when higher strength and straightness are needed and forming is finished; ductility drops sharply. Yield strength is 210 MPa in ANN versus 410 MPa in CW.
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 — Seamless and Welded Titanium Tubes for Condensers and Heat Exchangers — ASTM International (2021)
- ASM Handbook Vol. 2 — Properties and Selection: Nonferrous Alloys — ASM International (1990)
- ASM Handbook Vol. 13B — Corrosion: Materials (Titanium) — ASM International (2005)
- Titanium mill product datasheets (Grade 7/11 Pd-alloyed CP titanium) — TIMET / Baoti (2022)
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.