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Aluminum Top Hat Single Crystal

Available Configurations

Properties common to all products in this list

Composition: Al Form: Single Crystal Material: Aluminum CAS Number: 7429-90-5 Commodity: Metals Purity: 99.999% Top Section Thickness: 1mm Bottom Section Thickness: 1mm Inside Diameter: 8mm Outside Diameter: 10mm
Aluminum Top Hat Single Crystal is a specialized precision-engineered form of single-crystal aluminum, shaped into a “top hat” geometry for applications requiring mechanical stability, precise alignment, and exceptional crystallographic uniformity. This configuration combines the inherent advantages of single-crystal aluminum—such as minimal grain boundary defects, high electrical conductivity, and uniform thermal properties—with a geometry that facilitates secure mounting and integration into high-performance systems. The top hat form factor is particularly suited for optical metrology mounts, semiconductor process fixtures, and custom mechanical interfaces in scientific instrumentation. Specific applications benefit from reduced signal noise and enhanced structural stability, such as in high-resolution X-ray monochromators, calibration standards in diffraction experiments, and precision stages for microscopy. Research into the production of Aluminum Top Hat Single Crystal focuses on refining crystal growth to suppress dislocation density, optimizing machining to preserve surface perfection, and controlling alloying element distribution to tailor mechanical properties. This unique combination of geometry and material quality makes it an indispensable asset in advanced scientific and industrial environments.
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Material Properties

Atomic Properties
Element Value
Atomic number 13
Crystal structure Face centred cubic
Electronic structure Ne 3s² 3p¹
Valences shown 3
Atomic weight( amu ) 26.98154
Thermal neutron absorption cross-section( Barns ) 0.232
Photo-electric work function( eV ) 4.2
Atomic radius - Goldschmidt( nm ) 0.143
Ionisation potential( No./eV ) 4/ 120
Ionisation potential( No./eV ) 5/ 154
Ionisation potential( No./eV ) 6/ 190
Ionisation potential( No./eV ) 1/ 5.99
Ionisation potential( No./eV ) 3/ 28.4
Ionisation potential( No./eV ) 2/ 18.8
Mechanical Properties
Element Value
Material condition Soft
Material condition Hard
Poisson's ratio 0.345
Poisson's ratio 0.345
Bulk modulus( GPa ) 75.2
Bulk modulus( GPa ) 75.2
Tensile modulus( GPa ) 70.6
Tensile modulus( GPa ) 70.6
Hardness - Vickers( kgf mm⁻² ) 21
Hardness - Vickers( kgf mm⁻² ) 35-48
Tensile strength( MPa ) 130-195
Tensile strength( MPa ) 50-90
Yield strength( MPa ) 110-170
Yield strength( MPa ) 10‑35
Electrical Properties
Element Value
Electrical resistivity( µOhmcm ) 2.67@20°C
Superconductivity critical temperature( K ) 1.175
Temperature coefficient( K⁻¹ ) 0.0045@0-100°C
Thermal emf against Pt (cold 0C - hot 100C)( mV ) 0.42
Physical Properties
Element Value
Boiling point( C ) 2467
Density( gcm⁻³ ) 2.7@20°C
Thermal Properties
Element Value
Melting point( C ) 660.4
Latent heat of evaporation( J g⁻¹ ) 10800
Latent heat of fusion( J g⁻¹ ) 388
Specific heat( J K⁻¹ kg⁻¹ ) 900@25°C
Thermal conductivity( W m⁻¹ K⁻¹ ) 237@0-100°C
Coefficient of thermal expansion( x10⁻⁶ K⁻¹ ) 23.5@0-100°C
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Available Configurations

Properties common to all products in this list

Composition: Al Form: Single Crystal Material: Aluminum CAS Number: 7429-90-5 Commodity: Metals Purity: 99.999% Top Section Thickness: 1mm Bottom Section Thickness: 1mm Inside Diameter: 8mm Outside Diameter: 10mm

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Tolerances

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

Tolerances

Top Hat
Inside Diameter +2% / -1%
Outside Diameter +2% / -1%
Bottom Section Thickness +2% / -1%
Top Section Thickness +2% / -1%
Orientation See item