TANTALUM
|
PROPERTY |
@ 300K |
UNITS |
REFERENCES |
|
Density |
16.6 |
G/cm3 |
Ta1 Ta2 Ta3 |
|
Specific Heat |
0.03306 |
Cal/g-K |
Ta4 Ta5 Ta6 |
|
Thermal Conductivity |
0.137 |
Cal/cm-s-K |
Ta7 Ta8 Ta9 |
|
Thermal Exp Coef |
6.3x10-6 |
1/K |
Ta10 Ta11 Ta12 |
|
Melting Point |
3269 |
K |
Ta13 |
|
Resistivity |
13.48x10-6 |
Ohm-cm |
Ta14 Ta15 Ta16 |
|
TCR (218K to 398K) |
3540 |
Ppm/K |
Ta14 Ta15 Ta16 |
|
Young’s Modulus |
2.656x107 |
psi |
Ta17 Ta18 Ta19 |
|
Poisson’s Ratio |
0.341 |
----- |
Ta17 Ta18 Ta19 |
|
Yield Strength |
30 - 60 |
psi |
Ta20 Ta21 Ta22 |
|
Ult Tensile strength |
30 - 70 |
psi |
Ta20 Ta21 Ta22 |
|
Elongation at Break |
30 - 50 |
% |
Ta20 Ta21 Ta22 |
|
Hardness |
80 |
Brinell |
Ta23 Ta24 Ta25 |
Mechanical properties listed are for fully annealed, bulk material. Cold work can increase the yield strength to 100 ksi, the tensile strength to 180 ksi and reduce the elongation to 1%. Heating cold worked material into the temperature range of 1000 to 1400C causes recovery and recrystallization erasing the effects of cold work. For a complete review of mechanical properties, see Schmidt and Ogden, DMIC reports 133 & 189, 1963, Battelle Metals Information Center, Columbus, Ohio.