Refractory Metals
Unalloyed Pure Tantalum
Tantalum is a rare, hard, blue-grey, dense, lustrous metal that is renowned for its high temperature and corrosion resistance, high density and dielectric strength.
It is a metal very hard, malleable, ductile, easily fabricated and highly conductive of heat and electricity. Tantalum is one of the most inert, unreactive metals ever known.
Tantalum is selected and used for its corrosion resistance, thermal conductivity, high melting point, and ability to form a dielectric oxide film.
Unalloyed tantalum includes two major ASTM grades: R05200 which was produced by electron beam melting (EBM) and R05400 by powder metallurgy (PM). In ASTM B708, tantalum for thin film deposition requires a higher purity which is 99.95% and 99.99%.
HEXON manufactures and offers unalloyed tantalum in either milled or custom forms, such as Plate and Sheet, Rod and Bar, Wire, Tube, Fastener, Crucible and other customer tailored shapes.
HEXON starts production from powders (Ta2O5). The complete in-house processing from powders to EBM / Sintered ingots can assure us to fulfill technical requirements per either ASTM or customer’s individual specification.
Chemical requirement for R05200 and R05400
|
UNS |
C |
O |
N |
H |
Fe |
Mo |
Nb |
Ni |
Si |
Ti |
W |
Ta |
|
R05200 |
0.01 |
0.015 |
0.01 |
0.0015 |
0.01 |
0.02 |
0.1 |
0.01 |
0.005 |
0.01 |
0.05 |
Bal. |
|
R05400 |
0.01 |
0.03 |
0.01 |
0.0015 |
0.01 |
0.02 |
0.1 |
0.01 |
0.005 |
0.01 |
0.05 |
Bal. |
*
R05200 - Electron-beam cast or vacuum arc cast unalloyed tantalum
*
R05400 - Sintered unalloyed tantalum
Chemical requirement for 3N5 (99.95%) tantalum
|
C |
O |
N |
H |
S |
Al |
Ca |
Cd |
Cl |
Co |
Cr |
Cu |
|
40 |
100 |
40 |
10 |
1 |
5 |
5 |
5 |
5 |
5 |
5 |
5 |
|
Fe |
Hf |
K |
Li |
Mg |
Mn |
Mo |
Na |
Nb |
Ni |
Pb |
Si |
|
5 |
5 |
1 |
1 |
5 |
5 |
50 |
1 |
400 |
5 |
5 |
5 |
|
Sn |
Ti |
Th |
V |
W |
Zn |
Zr |
Y |
U |
Other |
Others |
|
|
5 |
5 |
0.005 |
5 |
150 |
5 |
5 |
5 |
0.005 |
Each<5 |
Total<500 |
|
*
Data in ppm, max
* Metallic elements analyzed by GDMS, Gases (CONH) by Leco Methods.
Chemical requirement for 4N (99.99%) tantalum
|
C |
O |
N |
H |
S |
Al |
Ca |
Cd |
Cl |
Co |
Cr |
Cu |
|
40 |
100 |
40 |
10 |
1 |
5 |
5 |
5 |
5 |
5 |
5 |
5 |
|
Fe |
Hf |
K |
Li |
Mg |
Mn |
Mo |
Na |
Nb |
Ni |
Pb |
Si |
|
5 |
5 |
1 |
1 |
5 |
5 |
30 |
1 |
80 |
1 |
1 |
1 |
|
Sn |
Ti |
Th |
V |
W |
Zn |
Zr |
Y |
U |
Other |
Others |
|
|
1 |
1 |
0.005 |
1 |
80 |
1 |
1 |
1 |
0.005 |
Each<5 |
Total<100 |
|
* Data in ppm, max
* Metallic elements analyzed by GDMS, Gases (CONH) by Leco Methods.
Mechanical properties for R05200 and R05400
|
Grade
|
Condition
|
Tensile strength |
Yield strength |
Elongation in 1 inch |
|
R05200 / R05400 rod and wire |
Annealed
|
172
|
103
|
25
|
|
R05200 / R05400 Sheet Thk < 1.5 mm |
Annealed
|
207
|
138
|
20
|
|
R05200 / R05400 Sheet Thk ≥1.5 mm |
Annealed
|
172
|
103
|
30
|
*
Per ASTM B708 and ASTM B365
Available forms
Ingot / Rod and bar / Plate and sheet / Strip and foil / Wire / Tube and Pipe / Capillary tube
Crucible / Fastener / Custom-made parts
Specifications
ASTM B364-96 (for ingot)
ASTM B365-12 (for rod, bar and wire)
ASTM B708-12 (for plate and sheet)
ASTM B521-12 (for seamless and welded tube)
ASTM F560-13e1 (for surgical implant)
Typical application
Electronics
Chemical processing
Aerospace
Thin film deposition
High temperature furnace construction
