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Formula : In
Form : Wire
Material : Indium
CAS Number : 7440-74-6
Commodity : Metals
Purity:
99.999%
Temper:
As Drawn
Indium spooled wire is widely used in various research and industrial applications due to its unique properties such as low melting point, excellent thermal and electrical conductivity, and malleability. In microelectronics, it enhances flip-chip bonding by improving contact resistance for high-frequency applications. It is also employed in superconducting wire development for low-loss current maintenance. In thermal management, indium's thermal conductivity aids in cooling electronics. Additionally, its ductility and low melting point make it ideal for soldering in aerospace. The latest research has demonstrate its usefulness in energy storage for improved battery efficiency and in additive manufacturing for precision printing in electronics and sensors.
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Tolerances
Wire
Diameter
±10%
Length
+5% / -1%
Material Properties for Metals
Atomic Properties
Element
Value
Atomic number
49
Crystal structure
Face centred tetragonal
Electronic structure
Kr 4d¹⁰ 5s² 5p¹
Valences shown
1, 2, 3
Atomic weight( amu )
114.82
Thermal neutron absorption cross-section( Barns )
194
Photo-electric work function( eV )
4.12
Natural isotope distribution( Mass No./% )
113/ 4.3
Natural isotope distribution( Mass No./% )
115/ 95.7
Atomic radius - Goldschmidt( nm )
0.157
Ionisation potential( No./eV )
3/ 28.0
Ionisation potential( No./eV )
Apr-54
Ionisation potential( No./eV )
2/ 18.9
Ionisation potential( No./eV )
1/ 5.79
Mechanical Properties
Element
Value
Material condition
Polycrystalline
Material condition
Soft
Poisson's ratio
0.45
Poisson's ratio
0.45
Bulk modulus( GPa )
35.3
Bulk modulus( GPa )
35.3
Tensile modulus( GPa )
10.6
Tensile modulus( GPa )
10.6
Hardness - Vickers( kgf mm⁻² )
10
Tensile strength( MPa )
2.6-4.5
Electrical Properties
Element
Value
Electrical resistivity( µOhmcm )
8.8@20@20°C
Superconductivity critical temperature( K )
3.41
Temperature coefficient( K⁻¹ )
0.0052@0-100°C
Thermal emf against Pt (cold 0C - hot 100C)( mV )
0.69
Physical Properties
Element
Value
Boiling point( C )
2080
Density( gcm⁻³ )
7.3@20°C
Thermal Properties
Element
Value
Melting point( C )
156.6
Latent heat of evaporation( J g⁻¹ )
2024
Latent heat of fusion( J g⁻¹ )
28.5
Specific heat( J K⁻¹ kg⁻¹ )
234@25°C
Thermal conductivity( W m⁻¹ K⁻¹ )
81.8@0-100°C
Coefficient of thermal expansion( x10⁻⁶ K⁻¹ )
24.8@0-100°C
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Discounts applied for volume purchases
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Discounts applied for volume purchases
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UOM Code: 007-857-52
Discounts applied for volume purchases