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Refractory Metal R05400 vs Ta-10W

Refractory Metal · grade comparison

Refractory Metal R05400 and Ta-10W are both refractory metal grades. Ta-10W is the stronger of the two: yield strength 550 MPa (79.8 ksi) against 170 MPa (24.7 ksi) for R05400, about 3.2 times as much; tensile strength follows at 690 MPa (100 ksi) vs 250 MPa (36.3 ksi). In exchange, R05400 is the more ductile: elongation 35% versus 25% for Ta-10W, and Ta-10W is harder (225 HB vs 90 HB). Ta-10W is stiffer (205 GPa vs 186 GPa) and R05400 conducts heat better (57 W/m·K vs 45 W/m·K).

R05400Choose it when the part is bent, formed or impact-loaded.

Ta-10WChoose it when strength drives the design.

R05400 vs Ta-10W: properties

R05400Ta-10W

Mechanical

Strength, stiffness, ductility and hardness at room temperature.

Elastic (Young's) Modulus

186 GPa27 Msi
205 GPa29.7 Msi

Shear Modulus

69 GPa10 Msi
78 GPa11.3 Msi

Poisson's Ratio

0.35
0.33

Tensile Strength (Ultimate)

250 MPa36.3 ksi
690 MPa100 ksi

Yield Strength (0.2% offset)

170 MPa24.7 ksi
550 MPa79.8 ksi

Elongation at Break

35%
25%

Reduction in Area

75%
60%

Shear Strength

160 MPa23.2 ksi
415 MPa60.2 ksi

Fatigue Strength (Endurance Limit)

130 MPa18.9 ksi
290 MPa42.1 ksi

Fracture Toughness (K_IC)

100 MPa·√m91 ksi·√in
—

Hardness, Brinell

90 HB
225 HB

Hardness, Rockwell B

48 HRB
97 HRB

Hardness, Vickers

95 HV
240 HV

Same in both: Bulk Modulus 200 GPa29 Msi

Physical

Density and transition temperatures.

Density

16.6 g/cm³0.6 lb/in³
16.8 g/cm³0.61 lb/in³

Melting Point (Solidus)

3,017°C5,463 °F
3,030°C5,486 °F

Liquidus Temperature

3,017°C5,463 °F
3,080°C5,576 °F

Thermal

How each material carries heat and how hot it can run.

Thermal Conductivity

57 W/m·K32.9 BTU/hr·ft·°F
45 W/m·K26 BTU/hr·ft·°F

Specific Heat Capacity

140 J/kg·K0.03 BTU/lb·°F
145 J/kg·K0.03 BTU/lb·°F

Latent Heat of Fusion

200 J/g86 BTU/lb
185 J/g79.5 BTU/lb

Same in both: Thermal Expansion (CTE, 20–100 °C) 6.5 µm/m·K3.6 µin/in·°F · Max Service Temperature (continuous) 300°C572 °F · Min Service Temperature -269°C-452 °F

Electrical

Conductivity and insulation.

Electrical Conductivity

12.8 % IACS
7 % IACS

Electrical Resistivity

1.35×10⁻⁷ Ω·m5.31 µΩ·in
2.5×10⁻⁷ Ω·m9.84 µΩ·in

Chemical & Environmental

Corrosion and environmental resistance (0–100 scores).

Galvanic Potential (seawater, vs SCE)

-0.15 V
—

Corrosion Resistance

98 / 100
95 / 100

Manufacturability

FabDigit workshop ratings (0–100 scores) — how each material behaves on the machine.

Machinability

22 / 100
25 / 100

Machinability Rating (AISI 1212 = 100 %)

20%
18%

Weldability

78 / 100
70 / 100

Formability (cold)

95 / 100
55 / 100

Castability

10 / 100
15 / 100

Same in both: Brazeability / Solderability 55 / 100 · Polishability 70 / 100

Sustainability

Primary-production footprint per kilogram.

Embodied Energy (primary production)

4,000 MJ/kg1,719,692 BTU/lb
3,600 MJ/kg1,547,723 BTU/lb

Embodied Carbon (primary production)

250 kg CO₂/kg
220 kg CO₂/kg

Embodied Water

900 L/kg108 gal/lb
2,500 L/kg300 gal/lb

Typical Recycled Content

30%
25%

Common Calculations

Ratios derived from the values above.

Specific Strength (UTS / density)

15 kN·m/kg
41 kN·m/kg

Specific Stiffness (E / density)

11.2 MN·m/kg
12.2 MN·m/kg

Modulus of Resilience

78 kJ/m³
738 kJ/m³

Thermal Diffusivity

24.5 mm²/s
18.5 mm²/s

Thermal Shock Resistance Index

12
23

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.

1502003005007001,0001,5005101520Density (g/cm³)Yield strength (MPa) — log scaleTa-10WR05400

Manufacturing and finishing

CapabilityR05400Ta-10W
Default condition——
Relative cost$$$$ High$$$$ High
Min. machined wall——
Best machined surface——

R05400 vs Ta-10W — frequently asked

Is Ta-10W stronger than R05400?

Yes. Ta-10W has a typical yield strength of 550 MPa (79.8 ksi) against 170 MPa (24.7 ksi) for R05400 — about 3.2 times as much. Tensile strength is 690 MPa (100 ksi) vs 250 MPa (36.3 ksi).

Which is cheaper, R05400 or Ta-10W?

Both sit in the same relative cost tier ($$$$, high); the part price will be decided by machining time, tolerance and quantity rather than by the material.

Which welds better, R05400 or Ta-10W?

R05400. Its weldability rates very good (78/100) against very good (70/100) for Ta-10W.

Ready to make it?

Upload a CAD file and FabDigit prices the part in R05400 and Ta-10W 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.