Physical Properties

Atomic Number

180.95

Density

16.6 g/cc

Melting Point

3290 K, 2996C, 5462F

Boiling Point

5731 K, 6100C, 9856F

Coefficient of Thermal Expansion (20C)

6.5 x 10(-6) / C

Electrical Resistivity (20C)

13.5 microhms-cm

Electrical Conductivity

13% IACS

Specific Heat

.036 cal/g/C

Thermal Conductivity

.13 cal/cm(2)/cmC/sec

Mechanical Properties

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

Poissons Ratio

0.35

Exponent

0.24

Elastic Modulus Tension

186 G Pa (27 x 10(-6) psi)

Shear

Ductile Brittle Transition Temperature

< 75 K

Recrystallization Temperature

900 1200 C