Titanium Grade Ti-Pd16-ANN (Annealed)
Heat-treated state
ASTM B367 Grade Ti-Pd16
Use after heavy weld repair or machining to remove residual stress and stabilise dimensions; slightly lower strength, best ductility.
Values for the ANN condition
Other Grade Ti-Pd16 tempers and conditions
Grade Ti-Pd16 is listed in 4 conditions; see the grade overview at Grade Ti-Pd16.
Compare all 4 conditionsHide
| Condition · open for datasheet | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness | Conductivity |
|---|---|---|---|---|---|---|
ANNThis page Annealed | Use after heavy weld repair or machining to remove residual stress and stabilise dimensions; slightly lower strength, best ductility. | 365 | 435 | 14 | 170 HB | 3.1 % IACS |
HIP + anneal | Highest-integrity condition for cyclically loaded or code-stamped corrosion castings requiring both density and low residual stress. | 375 | 450 | 15 | 175 HB | 3.1 % IACS |
FDefault As fabricated | Standard commercial supply condition for corrosion castings where internal porosity is acceptable (static pressure parts, valve bodies). | 380 | 450 | 11 | 180 HB | — |
Hot isostatic pressed | Choose when internal shrinkage porosity must be closed for pressure-boundary, fatigue-loaded or radiographic-quality castings. | 385 | 460 | 14 | 180 HB | 3.1 % IACS |
What is Grade Ti-Pd16-ANN?
Grade Ti-Pd16-ANN is Grade Ti-Pd16 heat treated to ANN — use after heavy weld repair or machining to remove residual stress and stabilise dimensions; slightly lower strength, best ductility. Grade Ti-Pd16-ANN has a yield strength of 365 MPa (52.9 ksi) and a tensile strength of 435 MPa (63.1 ksi) — weaker than 76% of titanium grades. Elongation at break is 14% and the elastic modulus is 103 GPa (14.9 Msi). Grade Ti-Pd16-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). F is the default condition FabDigit quotes; ANN is available on request or by drawing note.
Advantages
- Conducts heat well — 16.8 W/m·K (9.71 BTU/hr·ft·°F), better than 82% of titanium grades
- High electrical conductivity — 3.1 % IACS, better than 75% of titanium grades
Limitations
- Low strength — 365 MPa (52.9 ksi), worse than 76% of titanium grades
Grade Ti-Pd16-ANN properties
Typical room-temperature values for Grade Ti-Pd16-ANN; 22 are specific to this condition. Other listed values are Grade Ti-Pd16 reference data and may not represent this condition. Bars are the position among titanium grades.
Physical3
Grade Ti-Pd16-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 Ti-Pd16-ANN has a yield strength of 365 MPa (52.9 ksi) and a tensile strength of 435 MPa (63.1 ksi) — weaker than 76% of titanium grades. Elongation at break is 14% and the elastic modulus is 103 GPa (14.9 Msi).
Thermal6
Grade Ti-Pd16-ANN is rated for continuous service to 300°C (572 °F). It conducts heat at 16.8 W/m·K (9.71 BTU/hr·ft·°F), better than 82% of titanium grades. Thermal expansion is 8.6 µm/m·K (4.78 µin/in·°F).
Electrical3
Grade Ti-Pd16-ANN conducts electricity at 3.1 % IACS, better than 75% of titanium grades.
Chemical & Environmental3
Corrosion resistance is excellent (94/100), better than 80% of titanium grades.
Sustainability4
Producing a kilogram of Grade Ti-Pd16-ANN takes about 640 MJ of energy and emits 40 kg of CO₂ — less than 93% of titanium grades. Typical recycled content is 25%.
Manufacturability8
Grade Ti-Pd16-ANN's machinability is poor (34/100, better than 74% of titanium grades); weldability excellent (88/100); formability poor (25/100).
Values are nominal handbook figures for design screening. Confirm any required mill or lot documentation when quoting.
Working with Grade Ti-Pd16-ANN
Is Grade Ti-Pd16 easy to machine?
Machine like CP Ti: low surface speed (25–45 m/min carbide), heavy positive rake, sharp tools, generous flood coolant; avoid dwelling to prevent work hardening and titanium fire from fine chips.
Can Grade Ti-Pd16 be welded?
Excellent GTAW/EBW/plasma weldability with matching Ti-Pd filler (ERTi-7/16-type) under full argon trailing and back purge; keep weld and HAZ silver-bright, interpass <150 °C.
Can Grade Ti-Pd16 be formed, bent or molded?
Vacuum induction or skull melting with rammed-graphite or yttria-face investment moulds; allow for α-case removal by chem-milling 0.3–0.8 mm and expect low fluidity in thin sections (<3 mm).
What surface finishes work on Grade Ti-Pd16?
Grit-blast then pickle/chem-mill (HNO3-HF) to remove α-case and blast media; passivation is inherent, colour anodising or PTFE coating optional for identification and galling control.
Grade Ti-Pd16 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 passivity | 0.04 – 0.08 | 0.06 |
| N | ≤ 0.05 | 0.02 |
| C | ≤ 0.1 | 0.03 |
| H | ≤ 0.02 | 0.01 |
| Fe | ≤ 0.3 | 0.15 |
| Ocast grades allow higher O than wrought Grade 16 | ≤ 0.4 | 0.25 |
| Other, eachresidual | ≤ 0.1 | — |
| Other, totalresidual | ≤ 0.4 | — |
| Ti | balance | — |
Grade Ti-Pd16-ANN — frequently asked
What is Grade Ti-Pd16-ANN used for?
Grade Ti-Pd16-ANN is typically used for seawater castings, chemical process fittings and heat exchanger cast components. In short: lower-cost palladium grade; near C-8 corrosion resistance; seawater and brine service.
What is the yield strength of Grade Ti-Pd16-ANN?
Grade Ti-Pd16-ANN has a typical yield strength of 365 MPa (52.9 ksi) and a tensile strength of 435 MPa (63.1 ksi) — weaker than 76% of titanium grades. Strength varies by condition: see the 4 listed tempers.
Is Grade Ti-Pd16-ANN easy to machine?
Not especially — machinability is rated poor (34/100, better than 74% of titanium grades). Machine like CP Ti: low surface speed (25–45 m/min carbide), heavy positive rake, sharp tools, generous flood coolant; avoid dwelling to prevent work hardening and titanium fire from fine chips.
Can Grade Ti-Pd16-ANN be welded?
Yes — weldability is rated excellent (88/100). Excellent GTAW/EBW/plasma weldability with matching Ti-Pd filler (ERTi-7/16-type) under full argon trailing and back purge; keep weld and HAZ silver-bright, interpass <150 °C.
What surface finishes work on Grade Ti-Pd16-ANN?
Grit-blast then pickle/chem-mill (HNO3-HF) to remove α-case and blast media; passivation is inherent, colour anodising or PTFE coating optional for identification and galling control.
Can Grade Ti-Pd16-ANN be formed, bent or molded?
Vacuum induction or skull melting with rammed-graphite or yttria-face investment moulds; allow for α-case removal by chem-milling 0.3–0.8 mm and expect low fluidity in thin sections (<3 mm).
What is the maximum service temperature of Grade Ti-Pd16-ANN?
Grade Ti-Pd16-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 Grade Ti-Pd16-F and Grade Ti-Pd16-ANN?
F is the default condition — standard commercial supply condition for corrosion castings where internal porosity is acceptable (static pressure parts, valve bodies). ANN: use after heavy weld repair or machining to remove residual stress and stabilise dimensions; slightly lower strength, best ductility. Yield strength is 380 MPa in F versus 365 MPa in ANN.
Sources
- ASTM B367 — Standard Specification for Titanium and Titanium Alloy Castings — ASTM International (2022)
- ASTM B265 / B348 — Titanium and Titanium Alloy Strip, Sheet, Plate and Bars (Grade 16 chemistry basis) — ASTM International (2020)
- ASM Handbook Vol.2 — Properties and Selection: Nonferrous Alloys and Special-Purpose Materials — ASM International (1990)
- ASM Handbook Vol.19 — Fatigue and Fracture (titanium castings) — ASM International (1996)
- Titanium corrosion-resistant alloy guide (Grade 7/11/16/17 Pd grades) — TIMET / ATI (2018)
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.