Mylar® polyester film and sheet properties

Mylar^® brand Film or Polyester Film is ideally suited for a wide range of uses such as packaging, printing, die-cutting, electronics, protective overlay, barrier protection, apparel and other industrial applications. Because of Mylar^® brand Film or Polyester Film inherent physical properties, it’s your best choice for a high performance plastic film/sheet.

Physical Properties Properties Typical Value Units Test Method Tensile Strength (MD) 28,000 psi ASTM-D882 Tensile Strength (TD) 34,000 psi ASTM-D882 Strength Elongation MD 15,000 psi ASTM-D882 Strength F-5 TD 14,000 psi ASTM-D882 Modulus MD 710,000 psi ASTM-D882 Modulus TD 740,000 psi ASTM-D882 Elongation MD 115 % ASTM-D882 Elongation TD 92 % ASTM-D882 Surface Roughness 38 nm Optical Profilometer Density 1.39 g/cc ASTM-D1505 Viscosity 0.56 dL/g ASTM-D4603 Yield 21,000 in2/lb n/a

Electrical Properties Properties Typical Value Units Test Method Dielectric Strength AC, 20º C, .00092″ 7,000 volts/mil ASTM-D149-64 Dielectric Constant 25º C, 1kHz 3.2 n/a ASTM-D150-81 Dissipation Factor 25º C, 1kHz 0.005 n/a ASTM-D150-65 Volume Resistivity 25º C 1.00E+19 ohm-cm ASTM-D257-78 Corona Threshold V-AC V-AC ASTM-D2275-80

Thermal Properties Properties Typical Value Units Test Method Melting Point 254 º C n/a Dimensional Stability n/a n/a n/a at 105º C MD 0.6 % n/a at 105º C TD 0.3 % n/a at 150º C MD 1.8 % n/a at 150º C TD 1.0 % n/a Specific Heat 0.28 cal/g/º C n/a Thermal Expansion 1.7 x 10-5 in/in/º C ASTM-D696 UL94 Flame Class 94VTM-2 n/a Slow to self extinguishing

Polyester Film has a variety of different applications. Click here for more information.

Grafix Plastics offers a wide variety of different types, grades, finishes and thicknesses. Click here for more information on Grafix Plastics Polyester Film Products.

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Mylar^® is a registered trademark of Dupont Teijin Films. Only Dupont Teijin Films makes Mylar^®. Grafix Plastics stocks some Mylar^® brand products so please contact us for more information.