Description
Tantalum is a shiny, silvery colored metal which is heavy, dense, malleable and ductile when pure. It is found in small quantities in minerals (generally in conjunction with niobium), and is isolated by conversion to the oxide and then the fluoro-complex, K2TaF7, from which the pure metal is obtained by electrolysis. Tantalum is extremely corrosion resistant due to the formation of an oxide film, and is also resistant to acid attack (with the exception of HF). It will react with fused alkalis and a variety of non-metals at elevated temperatures.
Tantalum rod, also known as tantalum bar, can be used as laboratory apparatus which has to have good corrosion resistance, and is also used within the chemical industry for similar reasons.
Advantages of Tantalum Rod
1. Excellent corrosion resistance
2. High temperature strength
3. Easy to machine
4. Good biocompatibility
Performance of Tantalum Rod
|
Commodity
|
Tantalum rod
|
|
Standard
|
ASTM B393-98
|
|
Dimension
|
￠3~￠120mm
|
|
Material
|
RO5200, RO5400, RO5252 (Ta-2.5W), RO5255 (Ta-10W)
|
|
Purity
|
≥99.9%
|
TableⅠ Chemical Composition of Tantalum Rod
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Chemistry ppm
|
|
Description
|
Chief component
|
Impurities maximum
|
|
Ta
|
Nb
|
Fe
|
Si
|
Ni
|
W
|
Mo
|
Ti
|
O
|
C
|
H
|
N
|
|
Ta1
|
Remainder
|
300
|
40
|
30
|
20
|
40
|
40
|
20
|
150
|
40
|
15
|
20
|
|
Ta2
|
Remainder
|
800
|
100
|
100
|
50
|
200
|
200
|
50
|
200
|
100
|
15
|
100
|
|
TaNb3
|
Remainder
|
＜35000
|
100
|
100
|
50
|
200
|
200
|
50
|
200
|
100
|
15
|
100
|
|
TaNb20
|
Remainder
|
170000- 230000
|
100
|
100
|
50
|
200
|
200
|
50
|
200
|
100
|
15
|
100
|
|
Ta2.5W
|
Remainder
|
400
|
50
|
30
|
20
|
30000
|
60
|
20
|
150
|
50
|
15
|
60
|
|
Ta10W
|
Remainder
|
400
|
50
|
30
|
20
|
110000
|
60
|
20
|
150
|
50
|
15
|
60
|
TableⅡ Permissible Variations in Diameter for Tantalum Rods
|
Diameter, inch (mm)
|
Tolerance, +/-inch (mm)
|
|
0.125~0.187 excl (3.175~4.750)
|
0.003 (0.076)
|
|
0.187~0.375 excl (4.750~9.525)
|
0.004 (0.102)
|
|
0.375~0.500 excl (9.525~12.70)
|
0.005 (0.127)
|
|
0.500~0.625 excl (12.70~15.88)
|
0.007 (0.178)
|
|
0.625~0.750 excl (15.88~19.05)
|
0.008 (0.203)
|
|
0.750~1.000 excl (19.05~25.40)
|
0.010 (0.254)
|
|
1.000~1.500 excl (25.40~38.10)
|
0.015 (0.381)
|
|
1.500~2.000 excl (38.10~50.80)
|
0.020 (0.508)
|
|
2.000~2.500 excl (50.80~63.50)
|
0.030 (0.762)
|
TableⅢ Mechanical Requirements (Annealed Condition)
|
Rod, diameter 0.125" (3.18mm)~2.5" (63.5mm)
|
|
Grade
|
Tensile strength, psi (MPa), ≥
|
Yield strength, psi (MPa), ≥
|
Elongation in 1 inch gage length, %, ≥
|
|
RO5200/RO5400
|
25000 (172)
|
15000 (103)
|
25
|
|
RO5252
|
40000 (276)
|
28000 (193)
|
20
|
|
RO5255
|
70000 (482)
|
55000 (379)
|
20
|
|
RO5240
|
40000 (276)
|
28000(193)
|
25
|
Note: 10" (254mm) gage length to 0.050"(1.27mm) diameter and 1" (25.4mm) or 2"(50.8mm) gage length over 0.050"(1.27mm) diameter Special requirements are to be agreed on by the negotiation of supplier and buyer.
Package and Transportation
We pack tantalum rod in plywood case and send them by ocean or air.
Established in 2008, TallKee Refractory metals is a professional manufacturer and supplier of tantalum products in China. Our company gains ISO9001-2008 international quality administrative system certification and the mentioned tantalum rods (tantalum bars) are mainly sold to United States, South Korea, Russia, Japan, Germany, France, Brazil, Ukraine, Italy and other international markets. For more information, please do not hesitate to contact us.
