Refractory Metal R05400 vs Ta-2.5W
Refractory Metal · grade comparison
Refractory Metal R05400 and Ta-2.5W are both refractory metal grades. Ta-2.5W is the stronger of the two: yield strength 310 MPa (45 ksi) against 170 MPa (24.7 ksi) for R05400, about 82% more; tensile strength follows at 415 MPa (60.2 ksi) vs 250 MPa (36.3 ksi). In exchange, R05400 is the more ductile: elongation 35% versus 28% for Ta-2.5W, and Ta-2.5W is harder (115 HB vs 90 HB). Ta-2.5W is stiffer (200 GPa vs 186 GPa) and R05400 conducts electricity better (12.8 % IACS vs 9.9 % IACS). On the shop floor, R05400 sits in a lower cost tier (high, $$$$) than Ta-2.5W (specialty, $$$$$).
R05400Choose it when the part is bent, formed or impact-loaded, or when cost is the deciding factor.
Ta-2.5WChoose it when strength drives the design.
R05400 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.
Elastic (Young's) Modulus
Shear Modulus
Tensile Strength (Ultimate)
Yield Strength (0.2% offset)
Elongation at Break
Reduction in Area
Shear Strength
Fatigue Strength (Endurance Limit)
Fracture Toughness (K_IC)
Hardness, Brinell
Hardness, Rockwell B
Hardness, Vickers
Compressive Strength
Same in both: Bulk Modulus 200 GPa29 Msi · Poisson's Ratio 0.35
Physical
Density and transition temperatures.
Density
Melting Point (Solidus)
Liquidus Temperature
Thermal
How each material carries heat and how hot it can run.
Thermal Conductivity
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 · Latent Heat of Fusion 200 J/g86 BTU/lb · Max Service Temperature (continuous) 300°C572 °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).
Galvanic Potential (seawater, vs SCE)
Corrosion Resistance
Manufacturability
FabDigit workshop ratings (0–100 scores) — how each material behaves on the machine.
Machinability
Machinability Rating (AISI 1212 = 100 %)
Weldability
Formability (cold)
Castability
Brazeability / Solderability
Polishability
Sustainability
Primary-production footprint per kilogram.
Embodied Energy (primary production)
Embodied Carbon (primary production)
Embodied Water
Typical Recycled Content
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 | R05400 | Ta-2.5W |
|---|---|---|
| Default condition | — | Vacuum Annealed |
| Relative cost | $$$$ High | $$$$$ Specialty |
| Min. machined wall | — | — |
| Best machined surface | — | — |
R05400 vs Ta-2.5W — frequently asked
Is Ta-2.5W stronger than R05400?
Yes. Ta-2.5W has a typical yield strength of 310 MPa (45 ksi) against 170 MPa (24.7 ksi) for R05400 — about 82% more. Tensile strength is 415 MPa (60.2 ksi) vs 250 MPa (36.3 ksi).
Which is cheaper, R05400 or Ta-2.5W?
R05400 is the lower-cost material: it sits in the high tier ($$$$) while Ta-2.5W is specialty ($$$$$). Part price depends far more on geometry, tolerance and quantity than on raw stock — upload a CAD file for a live quote.
When should I choose R05400 over Ta-2.5W?
Pick R05400 when the part is bent, formed or impact-loaded, or when cost is the deciding factor. Pick Ta-2.5W when strength drives the design.
Ready to make it?
Upload a CAD file and FabDigit prices the part in R05400 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.