Tantalum Niobium Foil
Product Tantalum Niobium Foil/Strip (Ta-Nb Foil/Strip)
Part Number TRM-TA017
Standard ASTM B708 UNS R05240
Temper Annealed
Assay Tantalum- 40% Niobium

Tantalum niobium alloy typically refers to the tantalum alloys with 40% niobium contents.  It has good high-temperature mechanical properties. TRM offers a wide variety of dimensions for the tantalum niobium alloy foils or strips.

Thermostability 85%
Machinability 75%
Corrosion Resistance 88%
Inquiry

Assay

Element UNS R05240
O 0.020% max
C 0.010% max
N 0.010% max
H 0.0015% max
Fe 0.010% max
Ni  0.010% max
Si  0.005% max
Ti  0.010% max
Mo  0.020% max
W  0.050% max
Nb 35-42% max
Ta Remainder

Typical Size Available (Please inquire for details)

Thickness (In.) Width (In.) Length (In.)
Foil/Strip 0.001-0.1875 1.18-6 Supplied in Coils

Please refer to Tantalum Niobium Alloy Sheet for larger sizes.

Order Information

Please include the following information with your inquires and orders:
1. Quantity
2. Dimensions
3. R05240 or others on request.

Materials available for Tantalum and Tantalum Alloy Foil

 R05400—Unalloyed tantalum, powdermetallurgy consolidation,

R05200—Unalloyed tantalum, vacuum melted,

R05252—Tantalum + 2.5% tungsten alloy, vacuum melted.

R05255—Tantalum + 10% tungsten alloy, vacuum melted.

R05240—Tantalum alloy, 60% tantalum, 40% columbium, electron-beam furnace or vacuum arc melt, or both.

Mechanical Properties for Tantalum Niobium Foil

Mechanical Properties Thickness, in. Tensile strength, min, psi (MPa) Yield strength, min, psi (MPa) Elongation, min %
60% tantalum –40% niobium (R05240) <0.060 in. thick 35 000 (241) 20 000 (138) 25
≥0.060 in. thick 35 000 (241) 15 000 (103) 25