Titanium
Titanium Grade Ti-Pd8A
Properties, tempers, machining, finishes and uses — values shown for the F condition.
Lower-strength, higher-ductility palladium-alloyed titanium casting grade used for demanding corrosive-service parts requiring maximum formability of the cast structure and superior crevice resistance.
Reference datasheet — Grade Ti-Pd8A is not in the instant-quote catalog. Upload your part and an engineer will quote it in this grade or suggest the closest stocked equivalent.
What is Grade Ti-Pd8A?
Lower-strength, higher-ductility palladium-alloyed titanium casting grade used for demanding corrosive-service parts requiring maximum formability of the cast structure and superior crevice resistance. Grade Ti-Pd8A 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). Grade Ti-Pd8A has a yield strength of 310 MPa (45 ksi) and a tensile strength of 400 MPa (58 ksi) — weaker than 88% of titanium grades. Elongation at break is 16% and the elastic modulus is 103 GPa (14.9 Msi).
What is Grade Ti-Pd8A used for?
- chlorine processing castings
- seawater desalination hardware
- corrosion-resistant fasteners cast components
Advantages
- High electrical conductivity — 3.3 % IACS, better than 92% of titanium grades
- Conducts heat well — 17 W/m·K (9.82 BTU/hr·ft·°F), better than 84% of titanium grades
Limitations
- Low strength — 310 MPa (45 ksi), worse than 88% of titanium grades
Grade Ti-Pd8A properties
Typical room-temperature values for Grade Ti-Pd8A-F (standard low-cost supply condition for non-pressure corrosion hardware where b367 minimum properties suffice), compiled from standards, handbooks and producer data. Each bar shows where the value sits among the titanium grades in FabDigit's library — further right is higher. Other conditions have their own pages: see tempers.
Physical3
Grade Ti-Pd8A 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-Pd8A has a yield strength of 310 MPa (45 ksi) and a tensile strength of 400 MPa (58 ksi) — weaker than 88% of titanium grades. Elongation at break is 16% and the elastic modulus is 103 GPa (14.9 Msi).
Thermal6
Grade Ti-Pd8A is rated for continuous service to 315°C (599 °F). It conducts heat at 17 W/m·K (9.82 BTU/hr·ft·°F), better than 84% of titanium grades. Thermal expansion is 8.6 µm/m·K (4.78 µin/in·°F).
Electrical3
Grade Ti-Pd8A 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 Grade Ti-Pd8A takes about 700 MJ of energy and emits 42 kg of CO₂ — more than 74% of titanium grades. Typical recycled content is 25%.
Manufacturability8
Grade Ti-Pd8A's machinability is poor (30/100, better than 64% of titanium grades); weldability excellent (85/100); formability fair (50/100).
Common Calculations5
Values are nominal handbook figures for design screening. Certified mill or lot data ships with every FabDigit order on request.
Grade Ti-Pd8A tempers and conditions
Grade Ti-Pd8A is supplied in 4 conditions, each with its own property set. Open one for its full datasheet. F is what FabDigit quotes unless the drawing says otherwise.
- FDefaultStandard low-cost supply condition for non-pressure corrosion hardware where B367 minimum properties suffice.310 MPa yield · 185 HB
- HIPSpecify for pressure-retaining or fatigue-loaded castings where internal porosity must be closed.315 MPa yield · 180 HB
- ANNPick when residual casting stress must be removed before machining or welding, with slightly higher ductility.305 MPa yield · 175 HB
- HIP+ANNHighest-integrity condition: pore-free, stress-free and maximum ductility for critical chemical-plant castings.305 MPa yield · 172 HB
| Condition | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness | Conductivity |
|---|---|---|---|---|---|---|
FDefault as-cast (per ASTM B367) | Standard low-cost supply condition for non-pressure corrosion hardware where B367 minimum properties suffice. | 310 | 400 | 16 | 185 HB | — |
700–760 °C vacuum/inert anneal after casting | Pick when residual casting stress must be removed before machining or welding, with slightly higher ductility. | 305 | 395 | 19 | 175 HB | — |
hot isostatically pressed (≈900 °C / 100 MPa / 2 h) | Specify for pressure-retaining or fatigue-loaded castings where internal porosity must be closed. | 315 | 410 | 21 | 180 HB | — |
hot isostatic press followed by vacuum anneal | Highest-integrity condition: pore-free, stress-free and maximum ductility for critical chemical-plant castings. | 305 | 400 | 23 | 172 HB | — |
Working with Grade Ti-Pd8A
Is Grade Ti-Pd8A easy to machine?
Machine like CP titanium: rigid setup, sharp uncoated-carbide or PVD tools, low surface speed (~30–50 m/min), heavy feed, flood coolant to avoid work-hardening, galling and chip fires.
Can Grade Ti-Pd8A be welded?
Excellent GTAW/EBW/PAW weldability with full inert shielding and trailing gas; use ERTi-7/ERTi-11 or matching Pd filler so the weld keeps the same corrosion resistance, keep interpass low and surfaces oxide-free.
Can Grade Ti-Pd8A be formed, bent or molded?
Vacuum-arc or induction skull melting into rammed-graphite or investment moulds with generous risers; alpha-case from mould reaction must be chemically milled or ground off, HIP recommended for pressure parts.
Strength versus weight in the titanium family
Yield strength against density for every titanium grade FabDigit runs. Grade Ti-Pd8A is highlighted; hover a dot for its name, or open the interactive family chart.
Grade Ti-Pd8A 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 responsible for crevice/reducing-acid resistance | 0.12 – 0.25 | 0.18 |
| Ooxygen limit governs strength level of this lower-strength cast grade; verify against current ASTM B367 table | ≤ 0.25 | 0.15 |
| Fe | ≤ 0.25 | 0.1 |
| C | ≤ 0.1 | 0.03 |
| N | ≤ 0.05 | 0.02 |
| H0.015 max on castings; hydrogen control critical for ductility | ≤ 0.02 | 0.01 |
| Residuals (each)total residuals 0.40 max | ≤ 0.1 | — |
| Ti | balance | — |
What surface finishes work on Grade Ti-Pd8A?
Grit-blast plus pickle in HNO3/HF to remove alpha case, then passivate; colour anodising is available for identification, and no paint or plating is normally required for corrosion service.
Surface treatments FabDigit runs on titanium parts — pick them in the quote configurator or call them out on the drawing.
Thermal Spray
- Plasma Spray
Equivalent designations
Standards and trade names that resolve to Titanium Grade Ti-Pd8A in FabDigit's catalog. Equivalence is nominal — check the exact specification when certification matters.
- ASTM
- B367 Grade Ti-Pd8A
- Also called
- Ti-0.2Pd (wrought Grade 11, cast equivalent)
How much does Grade Ti-Pd8A cost?
Grade Ti-Pd8A is a high-cost titanium ($$$$), pricier than about 78% of the materials FabDigit quotes. Part price depends far more on geometry, tolerance and quantity than on the raw stock — upload a CAD file for a live quote.
Grade Ti-Pd8A — frequently asked
What is Grade Ti-Pd8A used for?
Grade Ti-Pd8A is typically used for chlorine processing castings, seawater desalination hardware and corrosion-resistant fasteners cast components. In short: best crevice corrosion resistance; most ductile Pd casting grade; net-shape corrosive-service parts.
What is the yield strength of Grade Ti-Pd8A?
Grade Ti-Pd8A has a typical yield strength of 310 MPa (45 ksi) and a tensile strength of 400 MPa (58 ksi) — weaker than 88% of titanium grades. Strength varies by condition: see the 4 listed tempers.
Is Grade Ti-Pd8A easy to machine?
Not especially — machinability is rated poor (30/100, better than 64% of titanium grades). Machine like CP titanium: rigid setup, sharp uncoated-carbide or PVD tools, low surface speed (~30–50 m/min), heavy feed, flood coolant to avoid work-hardening, galling and chip fires.
Can Grade Ti-Pd8A be welded?
Yes — weldability is rated excellent (85/100). Excellent GTAW/EBW/PAW weldability with full inert shielding and trailing gas; use ERTi-7/ERTi-11 or matching Pd filler so the weld keeps the same corrosion resistance, keep interpass low and surfaces oxide-free.
What surface finishes work on Grade Ti-Pd8A?
Grit-blast plus pickle in HNO3/HF to remove alpha case, then passivate; colour anodising is available for identification, and no paint or plating is normally required for corrosion service.
Can Grade Ti-Pd8A be formed, bent or molded?
Vacuum-arc or induction skull melting into rammed-graphite or investment moulds with generous risers; alpha-case from mould reaction must be chemically milled or ground off, HIP recommended for pressure parts.
What is the maximum service temperature of Grade Ti-Pd8A?
Grade Ti-Pd8A 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 Ti-Pd8A-F and Grade Ti-Pd8A-ANN?
F is the default condition — standard low-cost supply condition for non-pressure corrosion hardware where B367 minimum properties suffice. ANN: pick when residual casting stress must be removed before machining or welding, with slightly higher ductility. Yield strength is 310 MPa in F versus 305 MPa in ANN.
How much does Grade Ti-Pd8A cost?
Grade Ti-Pd8A is a high-cost titanium ($$$$), pricier than about 78% of the materials FabDigit quotes. Part price depends far more on geometry, tolerance and quantity than on the raw stock — upload a CAD file for a live quote.
Sources
- ASTM B367 Standard Specification for Titanium and Titanium Alloy Castings — ASTM International (2022)
- ASTM B265 / B348 (wrought Grade 7, 11, 16, 17 Ti-Pd properties for comparison) — 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 (cast titanium) — ASM International (1996)
- TIMET / Titanium corrosion-resistant alloy data (Ti-Pd grades) — TIMET (2018)
Property data is compiled from published supplier and standards handbooks and normalised for comparison; hardness values on non-Brinell scales are converted approximately for charting only. Manufacturability limits are FabDigit quote-engine defaults and may be relaxed by engineering review. Nothing on this page is a certification — request mill certs, CoC or material test reports with your order.