Chromium Thin Film Disk

Formula: Cr

Form: Thin Film

Material: Chromium

CAS Number: 7440-47-3

Commodity: Metals

Purity: 99.99%

Support: Permanent Mylar® 3.5µm

Chromium Thin Film Disk is one of Goodfellow's range of metal film Disk products. With 17 variations. The disks are made of chromium-coated Mylar® polyester film. With high tensile strength and chemical resistance, Chromium Mylar disks find uses in optical filters, decorative coatings, and electrical insulation applications.

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Technical Data Sheet Safety Data Sheet Tolerance Properties

each

Tolerances

Thin Film

Thickness		±30%

Disk

Diameter		±20%

Material Properties for Metals

Atomic Properties

Element	Value
Atomic number	24
Crystal structure	Body centred cubic
Electronic structure	Ar 3d⁵ 4s¹
Valences shown	2, 3, 6
Atomic weight( amu )	51.996
Thermal neutron absorption cross-section( Barns )	3.1
Photo-electric work function( eV )	4.4
Natural isotope distribution( Mass No./% )	50/ 4.35
Natural isotope distribution( Mass No./% )	52/ 83.79
Natural isotope distribution( Mass No./% )	54/ 2.36
Natural isotope distribution( Mass No./% )	53/ 9.5
Atomic radius - Goldschmidt( nm )	0.128
Ionisation potential( No./eV )	4/ 49.1
Ionisation potential( No./eV )	3/ 31.0
Ionisation potential( No./eV )	1/ 6.77
Ionisation potential( No./eV )	6/ 90.6
Ionisation potential( No./eV )	2/ 16.5
Ionisation potential( No./eV )	5/ 69.3

Mechanical Properties

Element	Value
Material condition	Hard
Material condition	Soft
Poisson's ratio	0.21
Poisson's ratio	0.21
Bulk modulus( GPa )	160.2
Bulk modulus( GPa )	160.2
Tensile modulus( GPa )	279
Tensile modulus( GPa )	279
Hardness - Vickers( kgf mm⁻² )	130
Hardness - Vickers( kgf mm⁻² )	220
Tensile strength( MPa )	689
Tensile strength( MPa )	103

Electrical Properties

Element	Value
Electrical resistivity( µOhmcm )	13.2@20@20°C
Temperature coefficient( K⁻¹ )	0.00214@0-100°C

Physical Properties

Element	Value
Boiling point( C )	2672
Density( gcm⁻³ )	7.1@20°C

Thermal Properties

Element	Value
Melting point( C )	1857
Latent heat of evaporation( J g⁻¹ )	6580
Latent heat of fusion( J g⁻¹ )	260
Specific heat( J K⁻¹ kg⁻¹ )	518@25°C
Thermal conductivity( W m⁻¹ K⁻¹ )	94@0-100°C
Coefficient of thermal expansion( x10⁻⁶ K⁻¹ )	6.5@0-100°C

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Chromium Thin Film Disk

Tolerances

Material Properties for Metals