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Tantalum (Ta) & Tantalum Alloy Rod


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Tantalum (Ta) is a high corrosion-resistant metal that makes it a valuable material in a large number of chemical applications. Tantalum can be used in the equipment construction sector, furnace construction, medical and electronics industry.

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Data sheet

Diameter1 inch ~ 8 inch
Purity99.95% ,99.99%
StandardASTM B365; ASTM F560
MaterialTa, Ta10W, Ta2.5W, Ta40Nb,UNS R05200, R05400, R05255, R05252, R05240
ConditionAnnealed, Unannealed

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Tantalum (Ta) & Tantalum Alloy Rod

Tantalum is a chemical element with the symbol Ta and atomic number 73.  Tantalum is a rare, hard, blue-gray, lustrous transition metal that is highly corrosion-resistant. 

  • Phase at STP: solid
  • Appearance: gray blue
  • Melting point: 3290 K (3017 °C, 5463 °F)
  • Boiling point: 5731 K (5458 °C, 9856 °F)
  • Density (near r.t.): 16.69 g/cm3
  • When liquid (at m.p.): 15 g/cm3
  • The heat of fusion: 36.57 kJ/mol
  • The heat of vaporization: 753 kJ/mol
  • Molar heat capacity: 25.36 J/(mol·K)


General Specifications:

Catalog NumberChemical FormulaDiameterPurityTemper
TA007910Ta1.0 mm99.95% As Rolled
TA007915Ta1.5 mm99.95%Annealed
TA007917Ta1.7 mm99.95%Annealed
TA007920Ta2.0 mm99.95%Annealed
TA007926Ta3.0 mm99.95%Annealed
TA007930Ta5.0 mm99.95%Annealed
TA007935Ta6.35 mm99.95%Annealed
TA007940Ta10.0 mm99.95%Annealed
TA007942Ta12.7 mm99.95%Annealed
TA007945Ta16 mm99.95%As drawn
TA007948Ta18 mm99.95%Annealed
TA007950Ta20.0 mm99.95%Annealed
TA007955Ta25 mm99.95%As Rolled 
TA007960Ta30.0 mm99.95%Unannealed
TA007961Ta30 mm99.95% As Rolled
TA007970Ta40.0 mm99.95%Unannealed
TA007972Ta50 mm99.95%Annealed
TA007975Ta75 mm99.95%Annealed
TA007995Ta100 mm99.95% As Rolled

Chemical Composition:

R05400 (%,Max)
R05255 (Ta10W) (%,Max)0.010.0150.010.00150.–11.0
R05452 (Ta2.5W) (%,Max)0.010.0150.010.00150.–3.5
R05240 (Ta-40Nb) (%,Max)–

Tantalum and Tantalum Alloy

  • R05200, unalloyed tantalum, electron-beam furnace or vacuum-arc melt, or both
  • R05400, unalloyed tantalum, powder-metallurgy consolidation.
  • R05255, tantalum alloy, 90 % tantalum, 10 % tungsten, electron-beam furnace of vacuum-arc melt, or both.
  • R05252, tantalum alloy, 97.5 % tantalum, 2.5 % tungsten, electron-beam furnace or vacuum-arc melt, or both.
  • R05240, tantalum alloy, 60 % tantalum, 40 % niobium, electron-beam furnace or vacuum-arc melt.

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