Titanium Ti Grade 11 CW-SR
Supply condition
UNS R52250 · EN 3.7225
CW-SR = 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.
Values for the CW-SR 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 |
ANNDefault 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 |
CW-SRThis page 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 CW-SR?
Ti Grade 11 CW-SR is Ti Grade 11 supplied in the CW-SR condition — use for machined parts, springs-clips and tube ends where residual stress and distortion must be removed without full softening. Ti Grade 11 CW-SR has a yield strength of 370 MPa (53.7 ksi) and a tensile strength of 440 MPa (63.8 ksi) — weaker than 76% of titanium grades. Elongation at break is 18% and the elastic modulus is 103 GPa (14.9 Msi). Ti Grade 11 CW-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). ANN is the default condition FabDigit quotes; CW-SR is available on request or by drawing note.
Advantages
- Conducts heat well — 20 W/m·K (11.6 BTU/hr·ft·°F), better than 98% of titanium grades
- Easy to machine — 42/100, better than 98% of titanium grades
- Low embodied carbon — 36 kg CO₂/kg, better than 98% of titanium grades
- High electrical conductivity — 3.2 % IACS, better than 89% of titanium grades
Limitations
- Low fracture toughness — 60 MPa·√m (54.6 ksi·√in), worse than 83% of titanium grades
- Low strength — 370 MPa (53.7 ksi), worse than 76% of titanium grades
Ti Grade 11 CW-SR properties
Typical room-temperature values for Ti Grade 11 CW-SR; 23 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 CW-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
Ti Grade 11 CW-SR has a yield strength of 370 MPa (53.7 ksi) and a tensile strength of 440 MPa (63.8 ksi) — weaker than 76% of titanium grades. Elongation at break is 18% and the elastic modulus is 103 GPa (14.9 Msi).
Thermal6
Ti Grade 11 CW-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
Ti Grade 11 CW-SR conducts electricity at 3.2 % IACS, better than 89% of titanium grades.
Chemical & Environmental3
Corrosion resistance is excellent (95/100), better than 83% of titanium grades.
Sustainability4
Producing a kilogram of Ti Grade 11 CW-SR 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 CW-SR's machinability is fair (42/100, better than 98% of titanium grades); weldability excellent (85/100); formability good (55/100).
Values are nominal handbook figures for design screening. Confirm any required mill or lot documentation when quoting.
Working with Ti Grade 11 CW-SR
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 CW-SR — frequently asked
What is Ti Grade 11 CW-SR used for?
Ti Grade 11 CW-SR 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 CW-SR?
Ti Grade 11 CW-SR has a typical yield strength of 370 MPa (53.7 ksi) and a tensile strength of 440 MPa (63.8 ksi) — weaker than 76% of titanium grades. Strength varies by condition: see the 5 listed tempers.
Is Ti Grade 11 CW-SR easy to machine?
Not especially — machinability is rated fair (42/100, better than 98% 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 CW-SR be welded?
Yes — weldability is rated excellent (85/100). 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 CW-SR?
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 CW-SR 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 CW-SR?
Ti Grade 11 CW-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 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.