High Strength Refractory · Tantalum
Refractory Metal Ta-2.5W
Refractory Metal Ta-2.5W is a high strength refractory refractory metal — strengthened tantalum alloy. Typical values: 240 MPa yield, 16.78 g/cm³, rated to 2,400 °C. Available for CNC machining, Sheet metal at FabDigit.
Properties
Typical room-temperature values in the Vacuum Annealed condition. Metric first, imperial in gray. The bars show where Ta-2.5W sits against the other 8 refractory metal grades in the catalog.
Datasheet
| Yield strength | 240 MPa35 ksi |
|---|---|
| Tensile strength | 480 MPa70 ksi |
| Hardness | 120 HV≈ 114 HB |
| Density | 16.78 g/cm³0.606 lb/in³ |
| Specific strength (yield ÷ density) | 14 |
| Min service temp | -200 °C-328 °F |
| Max service temp | 2,400 °C4,352 °F |
| Electrical conductivity | 13 % IACS7.5 MS/m |
| Machinability | Fair40 / 100 |
| Weldability | Good60 / 100 |
| Formability | Very good75 / 100 |
| ISO 513 machining group | P |
Values are nominal handbook figures for design screening. Certified mill or lot data ships with every FabDigit order on request.
Against other refractory metal grades
Strength versus weight in the refractory metal family
Yield strength against density for every refractory metal grade FabDigit runs. Ta-2.5W is highlighted; hover a dot for its name, or open the interactive family chart.
Manufacturability
The process limits FabDigit's quote engine applies to Ta-2.5W. Design inside these and the part quotes instantly; outside them it routes to an engineer.
CNC machining
| Machinability | Fair40 / 100 |
|---|---|
| ISO material group | P.3 |
| Cutting speed (rough / finish) | 140 / 170 m/min |
| Minimum wall | 0.8 mm |
| Minimum internal radius | 1.5 mm |
| Drill depth limit | 4× diameter |
| Best surface (machined / polished) | Ra 1.6 / — |
| Hardenable after machining | No |
Sheet metal
| Formability | Better75 / 100 |
|---|---|
| Weldability | Good60 / 100 |
| Bendable | Yes |
Conditions and tempers
How Ta-2.5W is supplied and what each state is for. The default is what FabDigit quotes unless your drawing says otherwise.
| Condition | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness |
|---|---|---|---|---|---|
Vacuum AnnealedDefault Heat Treat State | Contamination-free Ti/Zr — implants, aerospace hardware | — | — | — | — |
Heat treatment and post-processing
Operations FabDigit's suppliers routinely run on Ta-2.5W, ranked by how often they make sense for this grade.
Post-processing
| Manual Deburr | Deburrstandard |
|---|---|
| Edge Break (0.5mm) | Deburr |
| CMM Inspection | Inspection |
| FAI Report | Inspection |
| Individual Bag | Packaging |
Surface finishes for Ta-2.5W
Coatings and treatments compatible with refractory metal on the processes Ta-2.5W runs on. Pick them in the quote configurator or call them out on the drawing.
Marking / Decoration
- Chemical Etching
- Dot Peen Marking
- Electro-chemical Etching
- Embossing / Debossing
- Ink Stamping
- Laser Marking
- Mechanical Engraving
- Steel Stamping
- Vibro Engraving / Scribing
Equivalent designations
Standards and trade names that resolve to Refractory Metal Ta-2.5W in FabDigit's catalog. Equivalence is nominal — check the exact specification when certification matters.
- UNS
- R05252
- Trade names
- Tantalum-Tungsten
Stock forms
Raw-material forms FabDigit sources Ta-2.5W in.
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.