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Rulon Bearings

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Platinum, Pt, CP Grade, Hard Drawn - 50% Cold Worked
Categories: Metal; Nonferrous Metal; Precious Metal; Platinum Alloy; Pure Element

Material Notes: CP Grade (Commercially Pure) is 99.95% pure. Hard Drawn - 50% Cold Worked applies to strength, modulus, and hardness; other values are typical of Pt.

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Physical PropertiesOriginal ValueComments
Density 21.45 g/cc
 
Chemical PropertiesOriginal ValueComments
Atomic Mass 195.0781995
Atomic Number 78
Thermal Neutron Cross Section 9.0 barns/atom
X-ray Absorption Edge 0.15817 ÅK
 0.89405 ÅLI
 0.93484 ÅLII
 1.07306 ÅLIII
Electrode Potential 1.2 V
Electronegativity 2.2Pauling
Ionic Radius 0.650 ÅCrystal Ionic Radius for Valence +4
 0.800 ÅCrystal Ionic Radius for Valence +2
Electrochemical Equivalent 1.816 g/A/h
 
Mechanical PropertiesOriginal ValueComments
Hardness, Knoop 103Estimated from Vickers.
Hardness, Rockwell B 49Estimated from Vickers.
Hardness, Vickers 90
Tensile Strength, Ultimate 205 - 240 MPa
Elongation at Break 1.0 - 3.0 %in 50 mm
Tensile Modulus 156 GPastatic
Poissons Ratio 0.39
Shear Modulus 56.0 GPaCalculated value
 
Electrical PropertiesOriginal ValueComments
Electrical Resistivity 0.0000106 ohm-cmTemperature Coefficient of resistivity is 0.0039/K.
Magnetic Susceptibility 0.0000011cgs/g
 
Thermal PropertiesOriginal ValueComments
Heat of Fusion 113 J/g
Heat of Vaporization 2407 J/g
CTE, linear 9.10 µm/m-°C
@Temperature 20.0 °C
Specific Heat Capacity 0.134 J/g-°C
Thermal Conductivity 69.1 W/m-K
Melting Point 1769 °C
Boiling Point 3825 °C
 
Optical PropertiesOriginal ValueComments
Emissivity (0-1) 0.30650 nm
 0.152
@Temperature 1000 °C
Total Hemispherical
Reflection Coefficient, Visible (0-1) 0.70bulk Pt; 589 nm
 
Component Elements PropertiesOriginal ValueComments
Platinum, Pt 99.95 %

References for this datasheet.

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