Platinum Foil

Designed for demanding environments, Goodfellow's Platinum Foil offers exceptional chemical stability, thermal resilience, and biocompatibility - making it ideal for electronics, aerospace, medical implants, and scientific instrumentation. Manufactured from 99.85% to 99.999% pure platinum with ultra-tight thickness ranges (0.0005 mm to 2 mm), it integrates seamlessly into precision assemblies where purity, durability, and repeatability are critical. Available in lengths and widths up to 150 mm with optional polishing and polyester support. Platinum’s exceptional chemical inertness ensures corrosion resistance in hot acids and oxidizing environments, while its high melting point and low vapor pressure support stable performance under extreme temperature changes and vacuum conditions. Its high density enables robust ultra-thin foil components, and its catalytic activity and biocompatibility make it the material of choice for electrodes, sensors, and implantable devices. Combined with reliable thermal conductivity and formability, these properties make our platinum foil indispensable in high-tech applications from fuel cells to neural interfaces.

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Tolerance

Properties

Reference & Citations

each

Tolerances

Foil

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

Material Properties for Precious Metals

Atomic Properties

Element	Value
Atomic number	78
Crystal structure	Face centred cubic
Electronic structure	Xe 4f¹⁴ 5d⁹ 6s¹
Valences shown	1,2,3,4
Atomic weight( amu )	195.08
Thermal neutron absorption cross-section( Barns )	9
Photo-electric work function( eV )	5.3
Natural isotope distribution( Mass No./% )	192/ 0.79
Natural isotope distribution( Mass No./% )	196/ 25.30
Natural isotope distribution( Mass No./% )	190/ 0.01
Natural isotope distribution( Mass No./% )	195/ 33.80
Natural isotope distribution( Mass No./% )	198/ 7.20
Natural isotope distribution( Mass No./% )	194/ 32.90
Atomic radius - Goldschmidt( nm )	0.138
Ionisation potential( No./eV )	1/ 9.0
Ionisation potential( No./eV )	2/ 18.6

Mechanical Properties

Element	Value
Material condition	Hard
Material condition	Soft
Poisson's ratio	0.39
Poisson's ratio	0.39
Bulk modulus( GPa )	276
Bulk modulus( GPa )	276
Tensile modulus( GPa )	170
Tensile modulus( GPa )	170
Hardness - Vickers( kgf mm⁻² )	40
Hardness - Vickers( kgf mm⁻² )	100
Tensile strength( MPa )	200-300
Tensile strength( MPa )	125-150
Yield strength( MPa )	14-35
Yield strength( MPa )	185

Electrical Properties

Element	Value
Electrical resistivity( µOhmcm )	10.58@20@20°C
Temperature coefficient( K⁻¹ )	0.00392@0-100°C

Physical Properties

Element	Value
Boiling point( C )	3827
Density( gcm⁻³ )	21.45@20°C

Thermal Properties

Element	Value
Melting point( C )	1772
Latent heat of evaporation( J g⁻¹ )	2405
Latent heat of fusion( J g⁻¹ )	101
Specific heat( J K⁻¹ kg⁻¹ )	133@025°C
Thermal conductivity( W m⁻¹ K⁻¹ )	71.6@0-100°C
Coefficient of thermal expansion( x10⁻⁶ K⁻¹ )	9@0-100