Titanium Grade 17-ANN (Annealed)
Heat-treated state · default condition
ASTM Grade 17 · UNS R52252
Default stocked condition: maximum ductility and formability for deep-drawn heads, linings and heat-exchanger tube.
Values for the ANN condition
Other Grade 17 tempers and conditions
Grade 17 is listed in 4 conditions; see the grade overview at Grade 17.
Compare all 4 conditionsHide
| Condition · open for datasheet | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness | Conductivity |
|---|---|---|---|---|---|---|
ANNDefaultThis page Annealed | Default stocked condition: maximum ductility and formability for deep-drawn heads, linings and heat-exchanger tube. | 240 | 330 | 32 | 120 HB | — |
Forging / billet, annealed (ASTM B381 F-17) | For valve bodies, flanges and pump parts in Pd-enhanced corrosion service. | 240 | 330 | 30 | 120 HB | 3.3 % IACS |
Cold worked and stress relieved | Choose for cold-drawn seamless tubing and wire where higher strength and tighter tolerances are wanted with usable ductility. | 390 | 470 | 16 | 170 HB | 3.3 % IACS |
Cold rolled | As-rolled thin strip/foil for anodes, gaskets and clad liners where strength and flatness matter more than drawability. | 480 | 550 | 8 | 195 HB | 3.3 % IACS |
What is Grade 17-ANN?
Grade 17-ANN is Grade 17 heat treated to ANN — default stocked condition: maximum ductility and formability for deep-drawn heads, linings and heat-exchanger tube. Grade 17-ANN has a yield strength of 240 MPa (34.8 ksi) and a tensile strength of 330 MPa (47.9 ksi) — weaker than 90% of titanium grades. Elongation at break is 32% and the elastic modulus is 103 GPa (14.9 Msi). Grade 17-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
- Forms and bends easily — 90/100, better than 97% of titanium grades
- Easy to machine — 40/100, better than 93% of titanium grades
- High electrical conductivity — 3.3 % IACS, better than 92% of titanium grades
- Conducts heat well — 17.5 W/m·K (10.1 BTU/hr·ft·°F), better than 90% of titanium grades
Limitations
- Low strength — 240 MPa (34.8 ksi), worse than 90% of titanium grades
Grade 17-ANN properties
Typical room-temperature values for Grade 17-ANN; 13 are specific to this condition. Other listed values are Grade 17 reference data and may not represent this condition. Bars are the position among titanium grades.
Physical3
Grade 17-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
Grade 17-ANN has a yield strength of 240 MPa (34.8 ksi) and a tensile strength of 330 MPa (47.9 ksi) — weaker than 90% of titanium grades. Elongation at break is 32% and the elastic modulus is 103 GPa (14.9 Msi).
Thermal6
Grade 17-ANN is rated for continuous service to 315°C (599 °F). It conducts heat at 17.5 W/m·K (10.1 BTU/hr·ft·°F), better than 90% of titanium grades. Thermal expansion is 8.6 µm/m·K (4.78 µin/in·°F).
Electrical3
Grade 17-ANN conducts electricity at 3.3 % IACS, better than 92% of titanium grades.
Chemical & Environmental3
Corrosion resistance is excellent (95/100), better than 83% of titanium grades.
Sustainability4
Producing a kilogram of Grade 17-ANN takes about 700 MJ of energy and emits 42 kg of CO₂ — more than 74% of titanium grades. Typical recycled content is 25%.
Manufacturability7
Grade 17-ANN's machinability is fair (40/100, better than 93% of titanium grades); weldability excellent (88/100); 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 Grade 17-ANN
Is Grade 17 easy to machine?
Cuts like soft CP Ti — use sharp, positive-rake carbide, low speed (~30–60 m/min) with heavy flood coolant; avoid dwell and rubbing which work-harden and gall the gummy surface.
Can Grade 17 be welded?
Excellent GTAW/plasma/EB weldability with matching Gr17 or Gr1 filler; requires full inert trailing and back shielding, clean bright weld colour, and low-hydrogen preparation.
Can Grade 17 be formed, bent or molded?
The most formable Ti-Pd grade: cold deep-draws, bends to ~2T and spins readily; allow generous springback and warm-form (150–300 °C) heavy sections.
What surface finishes work on Grade 17?
Pickle in HNO₃/HF then passivate; anodizes to durable coloured oxide films; electroplating is rarely used and adhesion needs an activation strike.
Grade 17 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 |
|---|---|---|
| Pdcorrosion-enhancing addition; distinguishes Gr17 from Gr1 | 0.04 – 0.08 | 0.06 |
| Fe | ≤ 0.2 | 0.08 |
| OGrade 1 base — low interstitials give high ductility | ≤ 0.18 | 0.1 |
| C | ≤ 0.08 | 0.02 |
| N | ≤ 0.03 | 0.01 |
| H0.015% max for bar/billet; lower limits apply to sheet per order | ≤ 0.02 | 0.01 |
| Residuals (each)total residuals 0.40 max | ≤ 0.1 | — |
| Ti | balance | — |
Grade 17-ANN — frequently asked
What is Grade 17-ANN used for?
Grade 17-ANN is typically used for deep-drawn and formed vessel components, chemical process tanks and hoppers, thin-wall condenser and heat exchanger tubing, expansion bellows and diaphragms, vessel linings and cladding sheet and spun heads and dished ends. In short: most formable Ti-Pd grade; low-Pd Grade 11 substitute; deep-draw corrosion titanium.
What is the yield strength of Grade 17-ANN?
Grade 17-ANN has a typical yield strength of 240 MPa (34.8 ksi) and a tensile strength of 330 MPa (47.9 ksi) — weaker than 90% of titanium grades. Strength varies by condition: see the 4 listed tempers.
Is Grade 17-ANN easy to machine?
Not especially — machinability is rated fair (40/100, better than 93% of titanium grades). Cuts like soft CP Ti — use sharp, positive-rake carbide, low speed (~30–60 m/min) with heavy flood coolant; avoid dwell and rubbing which work-harden and gall the gummy surface.
Can Grade 17-ANN be welded?
Yes — weldability is rated excellent (88/100). Excellent GTAW/plasma/EB weldability with matching Gr17 or Gr1 filler; requires full inert trailing and back shielding, clean bright weld colour, and low-hydrogen preparation.
What surface finishes work on Grade 17-ANN?
Pickle in HNO₃/HF then passivate; anodizes to durable coloured oxide films; electroplating is rarely used and adhesion needs an activation strike.
Can Grade 17-ANN be formed, bent or molded?
The most formable Ti-Pd grade: cold deep-draws, bends to ~2T and spins readily; allow generous springback and warm-form (150–300 °C) heavy sections.
What is the maximum service temperature of Grade 17-ANN?
Grade 17-ANN 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 Grade 17-ANN and Grade 17 CR-Hard?
ANN is the default condition — default stocked condition: maximum ductility and formability for deep-drawn heads, linings and heat-exchanger tube. CR-Hard: as-rolled thin strip/foil for anodes, gaskets and clad liners where strength and flatness matter more than drawability. Yield strength is 240 MPa in ANN versus 480 MPa in CR-Hard.
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 / B861 / B862 — Titanium Tubing (seamless and welded) — ASTM International (2021)
- ASTM B381 — Titanium and Titanium Alloy Forgings — ASTM International (2019)
- ASM Handbook Vol. 2 — Properties and Selection: Nonferrous Alloys — ASM International (1990)
- Materials Properties Handbook: Titanium Alloys — ASM International (1994)
- GB/T 3621 (TA9-1) — SAC (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.