Tantalum Single Crystal 73Ta180.948

Discovered in 1802 by A.G. Ekeberg at Uppsala, Sweden.

[Greek: tantalos = father of Niobe of Greek mythology] French: tantale
German: tantal
Italian: tantalio
Spanish: tántalo

Description: Tantalum is a shiny, silvery metal which is soft when pure. It is very resistant to corrosion due to an oxide film on its surface, but is is attacked by HF and molten alkalis. Tantalum is used in electronics, cutting tools, chemical plants and surgery.


Metal single crystal properties
State: single crystal
Crystal structure: bcc
Production method: Floating zone
Standard size: diameter 6-12mm
thickness 1-2mm
Orientation: (100), (110) and (111)
Orientation accuracy: <2°, <1°, <0.5° or <0.1°
Polishing: as cut, one or two sides polished
Roughness of surface: <0.03µm
Purity: 99.99%
Typical analysis (ppm): Al < 1
C 80
Co < 3
Cu < 1
Fe 5
H < 10
N 90
O 120
S < 10
Si 25
Ta balance