TA1001 Tantalum Single Crystal (Ta Single Crystal)

Catalog No. TA1001
Purity 99.99%
Size Diameter 6-12mm; Thickness 1-2mm
Orientation (100), (110) and (111)

Stanford Advanced Materials (SAM) is a trusted supplier of tantalum single crystal and a wide variety of tantalum single crystals. Other shapes are also available upon request including Ta Foil / Ta Strip, Ta Tube / Ta Pipe, Ta Wire, Ta Sheet / Ta Plate, etc.

We also offer tantalum tungsten alloy, tantalum niobium alloy and tantalum compounds.

Tantalum Single Crystal Description

Tantalum (Ta) is a dark blue-gray metal that is very heavy, ductile and hard and has high corrosion resistance. Tantalum is especially resistant to chemicals at temperatures below 150 °C and can only be dissolved with hydrofluouric acid. It has the fourth highest melting point of all metals and is able to form extremely thin and protective oxide layers for high-quality capacitors, making it an excellent material for single crystal.

Tantalum Single Crystal Specification

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


Further Materials properties

Crystal structure:

(cell dimensions/pm), space group
b.c.c. (a=330.29), Im3m


16.6 g/cm3

X-ray diffractions mass absorption coefficients:

CuKa 166 (µ/r) / cm2g-1 
MoKa 95.4 (µ/r) / cm2g-1

Neutron scattering length:

0.691 b/10-12 cm

Thermal neutron capture cross-section:

20.6 sa / barns

Melting point:

2995.85 °C / 3269 °K

Boiling point:

5424.85±100 °C / 5698±100 °K

Molar volume:

10.87 cm3

Thermal conductivity:

57.5 [300 K] Wm-1K-1

Coefficient of linear thermal expansion:

6.6 x 10-6 K-1

Electrical resistivity:

12.45x10-8 [298 K] Wm

Mass magnetic susceptibility:

+1.07 x 10-8(s) kg-1m3

Young's modulus:

185.7 GPa

Rigidity modulus:

69.2 GPa

Bulk modulus:

196.3 GPa

Poisson's ratio:

0.342 GPa


Ta5+ 64; Ta4+ 68; Ta3+ 72; atomic 143; covalent 134


1.5 (Pauling); 1.33 (Allred); 4.11 eV (absolute)

Effective nuclear charge:

3.30 (Slater); 9.53 (Clementi); 13.78 (Froese-Fischer)

Number of Isotopes (incl. nuclear isomers):


Issotope mass range:

159 -> 186


Biological data

Biological role:


Toxic intake:

moderately poisonous by ingestion

Lethal intake:

LD50 (chloride, oral, rat)= 1900 mg kg-1


There are no cases of industrial poisoning caused by tantalum or its compounds. However, it is an experimental tumorigen.


n.a., but low


c. 0.03 p.p.m.




n.a., but low

Daily dietary intake :

0.001 mg

Total mass of element in average 
[70 kg] person:

c. 0.2 mg


Geological data





 Crystal appearance


 (Fe, Mn)(Ta, Nb)2O6

a group of ores of mixed composition




 6 - 6.5

 orth., black-brownish/black


 (Fe, Mn)(Ta, Nb)2O6


 6 - 6.5

 orth., black-brownish/black


 (Na, Ca)2Ta2O6(O, OH, F)


 5 - 5.5

 cub., vitreous/resinous yellow


 (Y, Ce, U, Fe)3(Nb, Ta, Ti)5O16


 5 - 6

 orth., vitreous/resinous black

Tantalum Single Crystal Application

• Used in the fabrication of semiconductors.
• Used for lasers and nonlinear optics.

Tantalum Single Crystal Packaging

Our tantalum single crystals are carefully handled during storage and transportation to preserve the quality of our products in their original condition.


sc/1618215261-normal-Capacitor Grade Tantalum Powder (20V-60V).jpg

TA1047 Capacitor Grade Tantalum Powder (20V-60V)

sc/1618215629-normal-Capacitor Grade Tantalum Powder (above 60V).jpg

TA1048 Capacitor Grade Tantalum Powder (above 60V)

sc/1618215924-normal-Metallurgical Grade Tantalum Powder.jpg

TA1049 Metallurgical Grade Tantalum Powder

TA1050 Tantalum Capillary, Ta Capillary

TA1050 Tantalum Capillary, Ta Capillary

sc/1618216298-normal-Tantalum Sputtering Target.jpg

ST1051 Tantalum Sputtering Target (Ta Sputtering Target)

SH1052 Tantalum Wire Mesh (Ta Wire Mesh)

SH1052 Tantalum Wire Mesh (Ta Wire Mesh)

sc/1617851239-normal-Spherical Tantalum Powder.jpg

TA1322 Spherical Tantalum Powder (Ta)

sc/1618216904-normal-Ta Heat Element.jpg

TA1419 Tantalum Heat Element (Ta Heat Elements)


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