Ruthenium Foil

Formula: Ru

Form: Foil/Film/Sheet

Material: Ruthenium

CAS Number: 7440-18-8

Commodity: Precious Metals

Purity: 99.9%

Ruthenium Foil is a thin foil of ruthenium metal produced by Goodfellow and available in 5 variations. With high hardness and excellent corrosion resistance, it’s valued for wear-resistant parts and coatings. Example applications include wear surfaces in valves and pumps, plating onto titanium hardware and diffusion barriers in microelectronics. Ruthenium's unique properties make it an important material across many industries.

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Technical Data Sheet Safety Data Sheet Tolerance Properties

each

Tolerances

Foil/Film/Sheet

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	44
Crystal structure	Hexagonal close packed
Electronic structure	Kr 4d⁷ 5s¹
Valences shown	0,1,2,3,4,5,6,7,8
Atomic weight( amu )	101.07
Thermal neutron absorption cross-section( Barns )	3
Photo-electric work function( eV )	4.71
Natural isotope distribution( Mass No./% )	99/ 12.7
Natural isotope distribution( Mass No./% )	96/ 5.5
Natural isotope distribution( Mass No./% )	104/ 18.6
Natural isotope distribution( Mass No./% )	98/ 1.9
Natural isotope distribution( Mass No./% )	101/ 17.1
Natural isotope distribution( Mass No./% )	100/ 12.6
Natural isotope distribution( Mass No./% )	102/ 31.6
Atomic radius - Goldschmidt( nm )	0.134
Ionisation potential( No./eV )	2/ 16.8
Ionisation potential( No./eV )	3/ 28.5
Ionisation potential( No./eV )	1/ 7.36

Mechanical Properties

Element	Value
Material condition	Hard
Material condition	Soft
Poisson's ratio	0.25
Poisson's ratio	0.25
Bulk modulus( GPa )	286
Bulk modulus( GPa )	286
Tensile modulus( GPa )	432
Tensile modulus( GPa )	432
Hardness - Vickers( kgf mm⁻² )	750
Hardness - Vickers( kgf mm⁻² )	350
Tensile strength( MPa )	495
Yield strength( MPa )	372

Electrical Properties

Element	Value
Electrical resistivity( µOhmcm )	7.7@20@20°C
Superconductivity critical temperature( K )	0.49
Temperature coefficient( K⁻¹ )	0.0041@0-100

Physical Properties

Element	Value
Boiling point( C )	3900
Density( gcm⁻³ )	12.2@20

Thermal Properties

Element	Value
Melting point( C )	2310
Latent heat of evaporation( J g⁻¹ )	5610
Latent heat of fusion( J g⁻¹ )	252
Specific heat( J K⁻¹ kg⁻¹ )	238@20°C
Thermal conductivity( W m⁻¹ K⁻¹ )	117@0-100°C
Coefficient of thermal expansion( x10⁻⁶ K⁻¹ )	9.6@0-100°C

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Ruthenium Foil

Tolerances

Material Properties for Precious Metals