Technical Data Sheet
Safety Data Sheet

Beryllium Disc

Beryllium Disc are available in a choice of 12 variations, with diameters ranging from 10mm to 50mm. This variety of sizes available allows you to choose the right specification for your engineering requirements. Beryllium is known for its high strength, low density and excellent thermal conductivity. These properties make it well-suited for applications in aerospace components, x-ray windows and mirrors. With their advanced performance and unique characteristics, Beryllium Discs meet the needs of demanding technology applications.
Percentage Purity: 99.8%
Thickness: 0.25mm
Diameter: 25mm
Technical Name: Beryllium
Formula: Be
Density: 1.848g/cm³
CAS Number: 7440-41-7
UOM Code: 629-911-04
SKU: 1000035643
Product Code: BE00-FL-000250


Thickness >0.05mm ±10%
Thickness <0.01mm ±25%
Thickness 0.01mm - 0.05mm ±15%

Acute toxicity

Serious health hazard

No Minimum order Despatch of products in stock within 48 hours Free technical support *Free delivery worldwide
  • Buy 5 for £686.59 each and save 19%
  • Buy 10 for £627.26 each and save 26%

For larger quantities

Shipping restrictions and charges
may apply for some hazardous materials.


Thickness >0.05mm ±10%
Thickness <0.01mm ±25%
Thickness 0.01mm - 0.05mm ±15%
Technical Data Sheet
Safety Data Sheet

Can't find what you're looking for? For customized options

Material Properties for Metals

Atomic Properties
Element Value
Atomic number 4
Crystal structure Hexagonal close packed
Electronic structure He 2s²
Valences shown 2
Atomic weight( amu ) 9.01218
Thermal neutron absorption cross-section( Barns ) 0.0092
Photo-electric work function( eV ) 3.4
Atomic radius - Goldschmidt( nm ) 0.113
Ionisation potential( No./eV ) 2/ 18.2
Ionisation potential( No./eV ) 1/ 9.32
Ionisation potential( No./eV ) 4/ 218
Ionisation potential( No./eV ) 3/ 154
Mechanical Properties
Element Value
Material condition Hard
Material condition Soft
Poisson's ratio 0.02
Poisson's ratio 0.02
Bulk modulus( GPa ) 110
Bulk modulus( GPa ) 110
Tensile modulus( GPa ) 318
Tensile modulus( GPa ) 318
Hardness - Vickers( kgf mm⁻² ) 150
Hardness - Vickers( kgf mm⁻² ) 200
Tensile strength( MPa ) 550
Tensile strength( MPa ) 310
Yield strength( MPa ) 345
Yield strength( MPa ) 240
Electrical Properties
Element Value
Electrical resistivity( µOhmcm ) 3.3@20@20°C
Superconductivity critical temperature( K ) 0.026
Temperature coefficient( K⁻¹ ) 0.009@0-100°C
Physical Properties
Element Value
Boiling point( C ) 2470
Density( gcm⁻³ ) 1.848@20°C
Thermal Properties
Element Value
Melting point( C ) 1278
Latent heat of evaporation( J g⁻¹ ) 32470
Latent heat of fusion( J g⁻¹ ) 1350
Specific heat( J K⁻¹ kg⁻¹ ) 1825@25°C
Thermal conductivity( W m⁻¹ K⁻¹ ) 201@0-100°C
Coefficient of thermal expansion( x10⁻⁶ K⁻¹ ) 12@0-100°C
Other Customers Purchased