Zinc Disk

Zinc Disk combines high corrosion resistance, good electrical conductivity, and ease of fabrication, making it a versatile material for electrochemical, metallurgical, and manufacturing applications. The flat, circular form allows for uniform surface contact, essential in galvanic protection, battery electrodes, and calibration standards. Industries such as marine engineering, electronics, and research laboratories use zinc disks for sacrificial anodes, electrode plates in electroplating systems, and metallurgical testing samples. Specific applications include cathodic protection of steel structures, anode plates in zinc-air batteries, and controlled-environment corrosion studies. In research, zinc disks serve as reliable test substrates for studying surface oxidation, coating adhesion, and galvanic behavior. Their balance of physical properties and form factor makes them indispensable in both industrial and scientific settings.

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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	30
Crystal structure	Hexagonal close packed
Electronic structure	Ar 3d¹⁰ 4s²
Valences shown	2
Atomic weight( amu )	65.38
Thermal neutron absorption cross-section( Barns )	1.1
Photo-electric work function( eV )	4.3
Natural isotope distribution( Mass No./% )	64/ 48.6
Natural isotope distribution( Mass No./% )	67/ 4.1
Natural isotope distribution( Mass No./% )	68/ 18.8
Natural isotope distribution( Mass No./% )	70/ 0.6
Natural isotope distribution( Mass No./% )	66/ 27.9
Atomic radius - Goldschmidt( nm )	0.137
Ionisation potential( No./eV )	6/ 108
Ionisation potential( No./eV )	1/ 9.39
Ionisation potential( No./eV )	4/ 59.4
Ionisation potential( No./eV )	3/ 39.7
Ionisation potential( No./eV )	2/ 17.96
Ionisation potential( No./eV )	5/ 82.6

Mechanical Properties

Element	Value
Hardness - Mohs	2.5
Material condition	Polycrystalline
Poisson's ratio	0.249
Bulk modulus( GPa )	69.4
Tensile modulus( GPa )	104.5

Electrical Properties

Element	Value
Electrical resistivity( µOhmcm )	5.96@20@20°C
Superconductivity critical temperature( K )	0.85
Temperature coefficient( K⁻¹ )	0.0042@0-100°C
Thermal emf against Pt (cold 0C - hot 100C)( mV )	0.76

Physical Properties

Element	Value
Boiling point( C )	907
Density( gcm⁻³ )	7.14@20°C

Thermal Properties

Element	Value
Melting point( C )	419.5
Latent heat of evaporation( J g⁻¹ )	1748
Latent heat of fusion( J g⁻¹ )	111
Specific heat( J K⁻¹ kg⁻¹ )	388@25°C
Thermal conductivity( W m⁻¹ K⁻¹ )	116@0-100°C
Coefficient of thermal expansion( x10⁻⁶ K⁻¹ )	31@0-100°C