Precious Metal Ticusil (Ag-Cu-Ti)
also Ticusil
Ticusil is a titanium-activated braze alloy based on the silver-copper eutectic; the titanium addition lets it wet alumina, sapphire, quartz and graphite directly in vacuum brazing, with no metallization step.
Reference datasheet — Ticusil (Ag-Cu-Ti) 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.
Ticusil (Ag-Cu-Ti) tempers and conditions
Ticusil (Ag-Cu-Ti) is supplied in one standard condition, AS-BRAZED.
Supply forms, finishes and certifications
Ways Ticusil (Ag-Cu-Ti) is supplied — form, process route, surface or paperwork — without a datasheet of their own. The property values above apply.
| Option | What it is | Type |
|---|---|---|
FOILDefault | Foil / shim | Supply form |
PREFORM | Stamped washer, ring or disc from foil | Supply form |
WIRE | Drawn, annealed | Supply form |
PASTE | Powder in organic binder for dispensing/screening | Printing process |
POWDER | Atomized, typically −325 mesh | Printing process |
What is Ticusil (Ag-Cu-Ti)?
Ticusil is a titanium-activated braze alloy based on the silver-copper eutectic; the titanium addition lets it wet alumina, sapphire, quartz and graphite directly in vacuum brazing, with no metallization step. It is supplied as foil, stamped preform, wire, powder and paste, and the as-brazed alloy gives 292 MPa tensile, 28 % elongation, 219 W/m·K thermal conductivity and 50 % IACS electrical conductivity, which suits it to thermally and electrically loaded ceramic-metal joints. It brazes only in vacuum better than 1×10⁻⁴ torr or very dry, oxygen-free argon at 830–850 °C, and demands clean, gloved handling. Incusil-10 is the lower-melting active alternative. Ticusil (Ag-Cu-Ti) has a density of 9.7 g/cm³ (0.35 lb/in³), lighter than 78% of precious metal grades. It melts at 780°C (1,436 °F). Ticusil (Ag-Cu-Ti) has a tensile strength of 292 MPa (42.4 ksi), weaker than 73% of precious metal grades. Elongation at break is 28% and the elastic modulus is 85 GPa (12.3 Msi).
What is Ticusil (Ag-Cu-Ti) used for?
- ceramic-metal vacuum seals
- sapphire/quartz window sealing
- semiconductor and RF vacuum device brazing
- graphite-to-metal joints
Advantages
- Low embodied carbon — 75 kg CO₂/kg, better than 75% of precious metal grades
Limitations
- Hard to polish — 60/100, worse than 92% of precious metal grades
- Difficult to machine — 30/100, worse than 86% of precious metal grades
- Difficult to weld — 20/100, worse than 86% of precious metal grades
Ticusil (Ag-Cu-Ti) properties
Typical room-temperature values; bars are the position among precious metal grades.
Physical3
Ticusil (Ag-Cu-Ti) has a density of 9.7 g/cm³ (0.35 lb/in³), lighter than 78% of precious metal grades. It melts at 780°C (1,436 °F).
Mechanical7
Ticusil (Ag-Cu-Ti) has a tensile strength of 292 MPa (42.4 ksi), weaker than 73% of precious metal grades. Elongation at break is 28% and the elastic modulus is 85 GPa (12.3 Msi).
Thermal6
Ticusil (Ag-Cu-Ti) is rated for continuous service to 400°C (752 °F). It conducts heat at 219 W/m·K (126.5 BTU/hr·ft·°F), better than 71% of precious metal grades. Thermal expansion is 18.5 µm/m·K (10.3 µin/in·°F).
Electrical3
Ticusil (Ag-Cu-Ti) conducts electricity at 50 % IACS, better than 71% of precious metal grades.
Chemical & Environmental3
Corrosion resistance is good (68/100), worse than 74% of precious metal grades.
Sustainability4
Producing a kilogram of Ticusil (Ag-Cu-Ti) takes about 1,100 MJ of energy and emits 75 kg of CO₂ — less than 71% of precious metal grades. Typical recycled content is 30%.
Manufacturability6
Ticusil (Ag-Cu-Ti)'s machinability is poor (30/100, worse than 86% of precious metal grades); weldability poor (20/100); formability very good (75/100).
Common Calculations4
Values are nominal handbook figures for design screening. Certified mill or lot data ships with every FabDigit order on request.
Strength versus weight in the precious metal family
Yield strength against density for every precious metal grade FabDigit runs. Ticusil (Ag-Cu-Ti) is highlighted; hover a dot for its name, or open the interactive family chart.
Working with Ticusil (Ag-Cu-Ti)
Is Ticusil (Ag-Cu-Ti) easy to machine?
Soft and gummy — foil is normally sheared, stamped or laser-cut rather than machined; avoid oil contamination that leaves carbon residue in the vacuum cycle.
Can Ticusil (Ag-Cu-Ti) be welded?
Not a weldable structural alloy; it is itself the filler — braze in vacuum better than 1×10⁻⁴ torr or in very dry, oxygen-free argon at 830–850 °C with short dwell.
Can Ticusil (Ag-Cu-Ti) be formed, bent or molded?
Readily rolled to <50 µm and stamped into preforms in the annealed state; re-anneal in vacuum if heavily cold worked.
Ticusil (Ag-Cu-Ti) 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 |
|---|---|---|
| Cu | 25.7 – 27.7 | 26.7 |
| Tiactive element; forms Ti-O/Ti-N/Ti-C reaction layer on ceramic | 4 – 5 | 4.5 |
| Other, eachimpurities; O and N kept low to preserve Ti activity | ≤ 0.05 | |
| Agbalance silver | ≥ 67.8 (balance) |
What surface finishes work on Ticusil (Ag-Cu-Ti)?
Handle with gloves and store sealed — Ti oxidizes and tarnish or fingerprints degrade wetting; clean joints with acetone/isopropanol immediately before assembly, no acid pickling of the Ti-bearing surface.
Equivalent designations
Standards and trade names that resolve to Precious Metal Ticusil (Ag-Cu-Ti) in FabDigit's catalog. Equivalence is nominal — check the exact specification when certification matters.
- Trade names
- Ticusil
How much does Ticusil (Ag-Cu-Ti) cost?
Ticusil (Ag-Cu-Ti) is a high-cost precious metal ($$$$), pricier than about 78% of the materials FabDigit quotes. Part price depends far more on geometry, tolerance and quantity than on the raw stock — upload a CAD file for a live quote.
Ticusil (Ag-Cu-Ti) — frequently asked
What is Ticusil (Ag-Cu-Ti) used for?
Ticusil (Ag-Cu-Ti) is typically used for ceramic-metal vacuum seals, sapphire/quartz window sealing, semiconductor and RF vacuum device brazing and graphite-to-metal joints. In short: titanium-activated Ag-Cu eutectic; wets graphite and sapphire; vacuum brazing only.
What is the tensile strength of Ticusil (Ag-Cu-Ti)?
Ticusil (Ag-Cu-Ti) has a typical tensile strength of 292 MPa (42.4 ksi) — weaker than 73% of precious metal grades.
Is Ticusil (Ag-Cu-Ti) easy to machine?
Not especially — machinability is rated poor (30/100, worse than 86% of precious metal grades). Soft and gummy — foil is normally sheared, stamped or laser-cut rather than machined; avoid oil contamination that leaves carbon residue in the vacuum cycle.
Can Ticusil (Ag-Cu-Ti) be welded?
Not readily — weldability is rated poor (20/100). Not a weldable structural alloy; it is itself the filler — braze in vacuum better than 1×10⁻⁴ torr or in very dry, oxygen-free argon at 830–850 °C with short dwell.
What surface finishes work on Ticusil (Ag-Cu-Ti)?
Handle with gloves and store sealed — Ti oxidizes and tarnish or fingerprints degrade wetting; clean joints with acetone/isopropanol immediately before assembly, no acid pickling of the Ti-bearing surface.
Can Ticusil (Ag-Cu-Ti) be formed, bent or molded?
Readily rolled to <50 µm and stamped into preforms in the annealed state; re-anneal in vacuum if heavily cold worked.
What is the maximum service temperature of Ticusil (Ag-Cu-Ti)?
Ticusil (Ag-Cu-Ti) is rated for continuous use to about 400°C (752 °F). Strength falls off well before that limit — check the elevated-temperature data for load-bearing parts.
How much does Ticusil (Ag-Cu-Ti) cost?
Ticusil (Ag-Cu-Ti) is a high-cost precious metal ($$$$), 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
- Ticusil active braze alloy datasheet — Morgan Advanced Materials (Wesgo Metals) (2020)
- ASM Handbook Vol. 6 — Welding, Brazing and Soldering (active metal brazing) — ASM International (1993)
- AWS A5.8/A5.8M — Specification for Filler Metals for Brazing and Braze Welding — AWS (2019)
- GB/T 10046 — SAC (2018)
- Ag-Cu-Ti active braze alloy property compilations — ASM Alloy Center / open literature (2021)
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.