Copper Disk

Copper Disk combines high electrical and thermal conductivity with excellent surface uniformity, making it a preferred choice for precision applications. Its mechanical stability and ease of machining allow it to be manufactured with highly consistent surface finishes, essential in demanding production environments. Copper disks are integral to industries such as optics, semiconductor manufacturing, and materials processing, where precise surface interaction is critical. They are widely utilized in sapphire wafer polishing, optical component finishing, and as substrates for thin-film deposition, where consistent flatness and thermal properties enhance production quality. Research and innovation rely on copper disks to develop improved polishing techniques, extend tooling lifespan, and optimize surface metrology systems. The material’s proven reliability and adaptability make it a valuable asset in both scientific research and advanced manufacturing contexts.

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Tolerance

Properties

Reference & Citations

each

Tolerances

Disc

Thickness	>0.05mm	±10%
Thickness	<0.01mm	±25%
Thickness	0.01mm - 0.05mm	±15%

Material Properties for Metals

Atomic Properties

Element	Value
Atomic number	29
Crystal structure	Face centred cubic
Electronic structure	Ar 3d¹⁰ 4s¹
Valences shown	1, 2
Atomic weight( amu )	63.546
Thermal neutron absorption cross-section( Barns )	3.8
Photo-electric work function( eV )	4.5
Natural isotope distribution( Mass No./% )	65/ 30.8
Natural isotope distribution( Mass No./% )	63/ 69.2
Atomic radius - Goldschmidt( nm )	0.128
Ionisation potential( No./eV )	4/ 55.2
Ionisation potential( No./eV )	6/ 103
Ionisation potential( No./eV )	1/ 7.73
Ionisation potential( No./eV )	5/ 79.9
Ionisation potential( No./eV )	3/ 36.8
Ionisation potential( No./eV )	2/ 20.29

Mechanical Properties

Element	Value
Material condition	Soft
Material condition	Hard
Poisson's ratio	0.343
Poisson's ratio	0.343
Bulk modulus( GPa )	137.8
Bulk modulus( GPa )	137.8
Tensile modulus( GPa )	129.8
Tensile modulus( GPa )	129.8
Izod toughness( J m⁻¹ )	68
Izod toughness( J m⁻¹ )	58
Hardness - Vickers( kgf mm⁻² )	87
Hardness - Vickers( kgf mm⁻² )	49
Tensile strength( MPa )	314
Tensile strength( MPa )	224
Yield strength( MPa )	270
Yield strength( MPa )	54

Electrical Properties

Element	Value
Electrical resistivity( µOhmcm )	1.69@20°C
Temperature coefficient( K⁻¹ )	0.0043@0-100°C
Thermal emf against Pt (cold 0C - hot 100C)( mV )	0.76

Physical Properties

Element	Value
Boiling point( C )	2567
Density( gcm⁻³ )	8.96@20°C

Thermal Properties

Element	Value
Melting point( C )	1083
Latent heat of evaporation( J g⁻¹ )	4796
Latent heat of fusion( J g⁻¹ )	205
Specific heat( J K⁻¹ kg⁻¹ )	385@25°C
Thermal conductivity( W m⁻¹ K⁻¹ )	401@0-100°C
Coefficient of thermal expansion( x10⁻⁶ K⁻¹ )	17@0-100°C