Molybdenum Top Hat Single Crystal

Formula: Mo

Form: Single Crystal

Material: Molybdenum

CAS Number: 7439-98-7

Commodity: Metals

Purity: 99.999%

Top Section Thickness (mm): 1mm

Bottom Section Thickness: 1mm

Inside Diameter: 8mm

Outside Diameter: 10mm

Molybdenum Top Hat Single Crystal is one of over 15 variations within Goodfellow's range of molybdenum single crystals. As a pure, oriented, single-grain material, molybdenum crystals are highly valued in research and industrial applications. For example, the crystals may be used as monochromators to select specific wavelengths of X-rays or neutrons for spectroscopy. Other uses include fundemental physics research and studies of materials properties and crystal structure. The purity and grain orientation of these single crystals make them ideal for investigating fundamental physical phenomena and properties.

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Technical Data Sheet Safety Data Sheet Tolerance Properties

each

Tolerances

Single Crystal

Orientation		See Item
Thickness		+2% / -1%
Length		+2% / -1%

Top Hat

Inside Diameter		+2% / -1%
Outside Diameter		+2% / -1%
Bottom Section Thickness		+2% / -1%
Top Section Thickness		+2% / -1%

Material Properties for Metals

Atomic Properties

Element	Value
Atomic number	42
Crystal structure	Body centred cubic
Electronic structure	Kr 4d⁵ 5s¹
Valences shown	2, 3, 4, 5, 6
Atomic weight( amu )	95.94
Thermal neutron absorption cross-section( Barns )	2.65
Photo-electric work function( eV )	4.2
Natural isotope distribution( Mass No./% )	95/ 15.9
Natural isotope distribution( Mass No./% )	96/ 16.7
Natural isotope distribution( Mass No./% )	98/ 24.1
Natural isotope distribution( Mass No./% )	97/ 9.6
Natural isotope distribution( Mass No./% )	92/ 14.8
Natural isotope distribution( Mass No./% )	94/ 9.3
Natural isotope distribution( Mass No./% )	100/ 9.6
Atomic radius - Goldschmidt( nm )	0.14
Ionisation potential( No./eV )	2/ 16.15
Ionisation potential( No./eV )	5/ 61.2
Ionisation potential( No./eV )	68
Ionisation potential( No./eV )	1/ 7.10
Ionisation potential( No./eV )	3/ 27.2
Ionisation potential( No./eV )	4/ 46.4

Mechanical Properties

Element	Value
Material condition	Hard
Material condition	Soft
Poisson's ratio	0.293
Poisson's ratio	0.293
Bulk modulus( GPa )	261.2
Bulk modulus( GPa )	261.2
Tensile modulus( GPa )	324.8
Tensile modulus( GPa )	324.8
Hardness - Vickers( kgf mm⁻² )	250
Hardness - Vickers( kgf mm⁻² )	200
Tensile strength( MPa )	485-550
Tensile strength( MPa )	620-690
Yield strength( MPa )	550
Yield strength( MPa )	415-450

Electrical Properties

Element	Value
Electrical resistivity( µOhmcm )	5.7@20@20°C
Superconductivity critical temperature( K )	0.915
Temperature coefficient( K⁻¹ )	0.00435@0-100°C
Thermal emf against Pt (cold 0C - hot 100C)( mV )	1.45

Physical Properties

Element	Value
Boiling point( C )	4612
Density( gcm⁻³ )	10.22@20°C

Thermal Properties

Element	Value
Melting point( C )	2617
Latent heat of evaporation( J g⁻¹ )	6153
Latent heat of fusion( J g⁻¹ )	290
Specific heat( J K⁻¹ kg⁻¹ )	251@25°C
Thermal conductivity( W m⁻¹ K⁻¹ )	138@0-100°C
Coefficient of thermal expansion( x10⁻⁶ K⁻¹ )	5.1@0-100°C

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Molybdenum Top Hat Single Crystal

Tolerances

Material Properties for Metals