Refractory Metal T-222 vs Ta-2.5W
Refractory Metal · grade comparison
Refractory Metal T-222 and Ta-2.5W are both refractory metal grades. T-222 is the stronger of the two: yield strength 470 MPa (68.2 ksi) against 310 MPa (45 ksi) for Ta-2.5W, about 52% more; tensile strength follows at 600 MPa (87 ksi) vs 415 MPa (60.2 ksi). In exchange, Ta-2.5W is the more ductile: elongation 28% versus 22% for T-222, and T-222 is harder (250 HB vs 115 HB). T-222 runs hotter in service (2,400°C vs 300°C continuous) and Ta-2.5W conducts heat better (54 W/m·K vs 42 W/m·K). On the shop floor, Ta-2.5W welds better (very good vs good) and T-222 sits in a lower cost tier (high, $$$$) than Ta-2.5W (specialty, $$$$$).
T-222Choose it when strength drives the design, or when the part sees heat.
Ta-2.5WChoose it when the part is bent, formed or impact-loaded, or when it will be welded.
T-222 vs Ta-2.5W: propertiesHow to read these bars
- One bar per material. A full bar is the highest value among all refractory metal grades in the FabDigit library; each bar is drawn as a share of that.
- The better value (by the usual engineering direction) is in bold. Rows with no direction — density, thermal conductivity — have no bold.
- Values are typical room-temperature figures for the condition named on each card.
- Confirm against the certified mill or resin datasheet before design release.
How to read these bars
- One bar per material. A full bar is the highest value among all refractory metal grades in the FabDigit library; each bar is drawn as a share of that.
- The better value (by the usual engineering direction) is in bold. Rows with no direction — density, thermal conductivity — have no bold.
- Values are typical room-temperature figures for the condition named on each card.
- Confirm against the certified mill or resin datasheet before design release.
Mechanical
Strength, stiffness, ductility and hardness at room temperature.
Shear Modulus
Bulk Modulus
Poisson's Ratio
Tensile Strength (Ultimate)
Yield Strength (0.2% offset)
Elongation at Break
Reduction in Area
Compressive Strength
Shear Strength
Fatigue Strength (Endurance Limit)
Fracture Toughness (K_IC)
Charpy V-Notch Impact (RT)
Hardness, Brinell
Hardness, Rockwell C
Hardness, Vickers
Hardness, Rockwell B
Same in both: Elastic (Young's) Modulus 200 GPa29 Msi
Physical
Density and transition temperatures.
Density
Liquidus Temperature
Same in both: Melting Point (Solidus) 3,030°C5,486 °F
Thermal
How each material carries heat and how hot it can run.
Thermal Conductivity
Latent Heat of Fusion
Max Service Temperature (continuous)
Same in both: Specific Heat Capacity 140 J/kg·K0.03 BTU/lb·°F · Thermal Expansion (CTE, 20–100 °C) 6.5 µm/m·K3.6 µin/in·°F · Min Service Temperature -269°C-452 °F
Electrical
Conductivity and insulation.
Electrical Conductivity
Electrical Resistivity
Chemical & Environmental
Corrosion and environmental resistance (0–100 scores).
Corrosion Resistance
Galvanic Potential (seawater, vs SCE)
Manufacturability
FabDigit workshop ratings (0–100 scores) — how each material behaves on the machine.
Machinability Rating (AISI 1212 = 100 %)
Weldability
Formability (cold)
Brazeability / Solderability
Polishability
Castability
Same in both: Machinability 18 / 100
Sustainability
Primary-production footprint per kilogram.
Embodied Carbon (primary production)
Same in both: Embodied Energy (primary production) 4,400 MJ/kg1,891,661 BTU/lb · Typical Recycled Content 20%
Common Calculations
Ratios derived from the values above.
Specific Strength (UTS / density)
Specific Stiffness (E / density)
Modulus of Resilience
Thermal Diffusivity
Thermal Shock Resistance Index
Strength versus weight
Yield strength against density for every refractory metal grade in the FabDigit library; the compared grades are highlighted. Up and left is stronger for its weight.
Manufacturing and finishing
| Capability | T-222 | Ta-2.5W |
|---|---|---|
| Default condition | — | Vacuum Annealed |
| Relative cost | $$$$ High | $$$$$ Specialty |
| Min. machined wall | — | — |
| Best machined surface | — | — |
T-222 vs Ta-2.5W — frequently asked
Is T-222 stronger than Ta-2.5W?
Yes. T-222 has a typical yield strength of 470 MPa (68.2 ksi) against 310 MPa (45 ksi) for Ta-2.5W — about 52% more. Tensile strength is 600 MPa (87 ksi) vs 415 MPa (60.2 ksi).
Which is cheaper, T-222 or Ta-2.5W?
T-222 is the lower-cost material: it sits in the high tier ($$$$) while Ta-2.5W is specialty ($$$$$). Part price depends far more on geometry, tolerance and quantity than on raw stock — upload a CAD file for a live quote.
Which welds better, T-222 or Ta-2.5W?
Ta-2.5W. Its weldability rates very good (80/100) against good (65/100) for T-222.
Ready to make it?
Upload a CAD file and FabDigit prices the part in T-222 and Ta-2.5W side by side — material, machining time, tolerance and finish in one quote. Certified material data ships with the order on request.
Typical handbook values for the conditions named above, normalised for comparison. Hardness on non-Brinell scales is converted approximately for charting only. Request certified data with your order for design-critical properties.