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	PRODUCT DATA of Terbium

Material

Terbium

Chemical Composition

100Tb

	EXPERIENCE IN PRACTICE

Equivalent Designations

Tb

	PHYSICAL PROPERTIES

Atomic Number

65

Atomic Weight

159 amu

Specific Gravity

8.3

	ELASTIC PROPERTIES

Tensile Modulus

58 GPa

Shear Modulus

22 GPa

Bulk Modulus

38.7 GPa

Poisson Ratio

0.26

Speed of Sound (longitudinal)

2620 m/s

	ELECTRICAL PROPERTIES

Electrical Volume Resistivity

0.00000115 ohm.m

	THERMAL PROPERTIES

Thermal Conductivity

11.1 W/m.K

Thermal Expansion Coefficient

10.3 μstrain/°C

Melting Range

1360 °C

	RELEVANT PROPERTIES FOR USE IN SPACE COMMUNITY

Corrosion/Thermal

It is reasonably stable in air, but it is slowly oxidised and it reacts with cold water