Images are for guidance only and might not represent the final product.

Skip to the beginning of the images gallery

Formula: Polyester, PET, PETP

Form: Metallized Film

Material: Polyethylene terephthalate (PET)

CAS Number: 25038-59-9

Commodity: Polymers

Metallized With: Aluminum - 20 nm

Thickness: 0.006mm

Ohms/Square: 3

Surface Finish: Metallized On One Side

PET Disk Metallized with Aluminum (20 nm)

PET Disk Metallized with 20 nm Aluminum integrates the strength, flexibility, and barrier properties of polyethylene terephthalate with a thin, uniform aluminum coating to provide enhanced reflectivity, electrical conductivity, and barrier performance. The disk form ensures precise dimensional control for optical, electronic, and thermal management components. Industries employ these metallized PET disks for reflective optics, capacitor electrodes, and electromagnetic shielding elements. Specific applications include mirror substrates for optical devices, metallized dielectric elements in power capacitors, and reflective heat shields in aerospace systems. In research, these disks are used in optical interference studies, development of high-barrier conductive films, and evaluation of thin-metal layer adhesion on polymer substrates. The synergy of PET’s mechanical and barrier properties with aluminum’s conductivity and reflectivity makes these metallized disks valuable in advanced industrial and scientific contexts.

Quick Links:

Tolerance

Properties

Reference & Citations

each

Tolerances

Metallised Film

Thickness		±10%

Disk

Diameter		±0.5mm

Material Properties for Polymers

Chemical Resistance

Element	Value
Acids - concentrated	Good-Poor
Acids - dilute	Good
Alcohols	Good
Alkalis	Poor
Aromatic hydrocarbons	Good-Fair
Greases and Oils	Good
Halogenated Hydrocarbons	Good-Poor
Halogens	Fair-Poor
Ketones	Good-Fair

Mechanical Properties

Element	Value
Coefficient of friction	0.2-0.4
Hardness - Rockwell	M94-101
Poisson's ratio	0.37-0.44
Tensile modulus( GPa )	02-Apr
Izod impact strength( J m⁻¹ )	13-35
Tensile strength( MPa )	80, for biax film 190-260

Electrical Properties

Element	Value
Dielectric constant @1MHz	3
Dissipation factor @ 1kHz	0.002
Dielectric strength( kV mm⁻¹ )	17
Surface resistivity( Ohm/sq )	10¹³
Volume resistivity( Ohmcm )	>10¹⁴

Physical Properties

Element	Value
Flammability	HB
Radiation resistance	Good
Refractive index	1.58-1.64
Resistance to Ultra-violet	Fair?
Limiting oxygen index( % )	21
Water absorption - equilibrium( % )	0.7
Water absorption - over 24 hours( % )	0.1
Density( gcm⁻³ )	1.3-1.4

Thermal Properties

Element	Value
Heat-deflection temperature - 0.45MPa( C )	115
Heat-deflection temperature - 1.8MPa( C )	80
Lower working temperature( C )	20
Upper working temperature( C )	115-170
Specific heat( J K⁻¹ kg⁻¹ )	1200-1350
Thermal conductivity( W m⁻¹ K⁻¹ )	0.15-0.4@23°C
Coefficient of thermal expansion( x10⁻⁶ K⁻¹ )	20-80