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Specifications
tantalum target/ingotgrade: ta1, ta2
Purity:99.95%min
size: 3.0mm up to 120mm Diameter
Tantalum features high melting point , low vapor pressure , good cold processability ,excellent chemical stability , good resistance to corrosion , high dielectric constant ,in surface oxide film .widely used in many industries such as electronics ,metallurgy, chemical processing , hard alloy cutters , aerospace and aviation.
We can produce all kinds of tantalum alloy rods,such as Ta2.5W,Ta10W,Ta40Nb,
size: 3.0mm up to 120mm Diameter x random length, They are very popular in the market on account of their superior quality and competitive price.Special requirements to be agreed on by the supplier and buyer of negotiation.
Table.1.Chemical composition:
Chemistry % | |||||||||||||
Designation |
Chief component |
Impurities maxmium |
|||||||||||
Ta |
Nb |
Fe |
Si |
Ni |
W |
Mo |
Ti |
Nb |
O |
C |
H |
N |
|
Ta1 |
Remainder |
|
0.004 |
0.003 |
0.002 |
0.004 |
0.004 |
0.002 |
0.03 |
0.015 |
0.004 |
0.0015 |
0.002 |
Ta2 |
Remainder |
|
0.01 |
0.01 |
0.005 |
0.02 |
0.02 |
0.005 |
0.08 |
0.02 |
0.01 |
0.0015 |
0.01 |
Table2. Permissible variations in diameter for 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) |
Table3. 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) |
|
Physical Properties |
Tantalum |
|
Atomic Number |
180.95 |
|
Density |
16.6 g/cc |
|
Melting Point |
3290 K, 2996°C, 5462°F |
|
Boiling Point |
5731 K, 6100°C, 9856°F |
|
Coefficient of Thermal Expansion (20°C) |
6.5 x 10(-6) / °C |
|
Electrical Resistivity (20°C) |
13.5 microhms-cm |
|
Electrical Conductivity |
13% IACS |
|
Specific Heat |
.036 cal/g/°C |
|
Thermal Conductivity |
.13 cal/cm(2)/cm°C/sec |
|
Annealed |
Ultimate Tensile Strength |
285 M Pa (41 ksi) |
Yield Strength |
170 M Pa (25 ksi) |
|
% Elongation |
30%+ |
|
%Reduction in Area |
80% + |
|
Cold Worked |
Ultimate Tensile |
650 M Pa |
Strength |
(95 ksi) |
|
% Elongation |
5% |
|
Hardness |
Annealed |
90 HV |
Cold Worked |
210 HV |
|
Poisson's Ratio |
0.35 |
|
Strain Hardening Exponent |
0.24 |
|
Elastic Modulus Tension |
186 G Pa (27 x 10(-6) psi) |
|
Ductile Brittle Transition Temperature |
< 75 ° K |
|
Recrystallization Temperature |
900 - 1200 °C |
|
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