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Formula: Ru
Form: Powder
Material: Ruthenium
CAS Number: 7440-18-8
Commodity: Precious Metals
Purity: 99.9%
Hazard Pictogram: GHS02
Ruthenium Powder is a pure metal powder available in 17 variations. Its unique properties include excellent corrosion resistance, hardness and a high melting point. This versatile powder has widespread applications, including being used as an alloying element to harden platinum and palladium, as electrical contacts and thick-film resistors, and as a catalyst in some chemical production processes. With the range of grades and sizes we offer, Ruthenium Powder supports development across industries like electronics, chemical processing and manufacturing.
Technical Data Sheet Safety Data Sheet Tolerance Properties

Flammable

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Tolerances

Powder
Mean Particle Size Nominal
Minimum Particle Size Nominal
Maximum Particle Size Nominal
Maximum Particle Size Nominal
Particle Size D10 Nominal
Particle Size D50 Nominal
Particle Size D90 Nominal

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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