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Technical Data Sheet
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DX845 PMP Disk

The DX845 PMP Disk is an engineered thermoplastic known for its strength, stiffness and chemical resistance. These properties make DX845 PMP disks ideal for use in harsh environments and load-bearing mechanical assemblies across sectors, including industrial, automotive and aerospace. With 60 sizes available, Goodfellow can offer these hard-working disks in the right size and thickness to meet your needs.
Grade: DX845
Formula: TPX®
Thickness: 0.25mm
Diameter: 50mm
Surface Finish: Matt/Gloss
Colour: Natural
UOM Code: 105-864-51
Legacy Code: ME311150
Distributor Code:
GF10586451
SKU: 1000018932
Product Code: ME31-FM-000250

Tolerances

Disk
Thickness ±20%

Tolerances

Disk
Thickness ±20%
Technical Data Sheet
Safety Data Sheet
$215.67
each
  • Buy 5 for $174.69 each and save 19%
  • Buy 10 for $159.59 each and save 26%
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Material Properties for Polymers

Chemical Resistance
Element Value
Acids - concentrated Good-Fair
Acids - dilute Good
Alcohols Good
Alkalis Good
Aromatic hydrocarbons Fair-Poor
Greases and Oils Good-Fair
Halogenated Hydrocarbons Fair-Poor
Halogens Fair-Poor
Ketones Good-Fair
Electrical Properties
Element Value
Dielectric constant @1MHz 2.12
Dissipation factor @ 1kHz 0.0002
Volume resistivity( Ohmcm ) >10¹⁶
Physical Properties
Element Value
Flammability HB
Refractive index 1.463
Resistance to Ultra-violet Poor
Limiting oxygen index( % ) 17
Water absorption - over 24 hours( % ) 0.01
Density( gcm⁻³ ) 0.835
Mechanical Properties
Element Value
Hardness - Rockwell R85
Elongation at break( % ) 15
Tensile modulus( GPa ) 1.5
Izod impact strength( J m⁻¹ ) 49
Tensile strength( MPa ) 25.5
Thermal Properties
Element Value
Heat-deflection temperature - 0.45MPa( C ) 100
Heat-deflection temperature - 1.8MPa( C ) 40
Lower working temperature( C ) 20
Upper working temperature( C ) 75-115
Specific heat( J K⁻¹ kg⁻¹ ) 2000
Thermal conductivity( W m⁻¹ K⁻¹ ) 0.17@23°C
Coefficient of thermal expansion( x10⁻⁶ K⁻¹ ) 117
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