| Category | Polymer , Film , Thermoplastic , Polyester, TP , Polyester Film | 
| Manufacturer | DuPont Teijin Films (DTF) | 
| Trade Name | Mylar® | 
| Port | Ningbo port,China | 
| Trade Terms | FOB, CFR, CIF | 
| Payment Terms | L/C, T/T, Western Union | 
| Download PDF | DuPont Teijin Films Mylar® EL21 Polyester Film, 750 Gauge.pdf  | 
          
| Price | EMAIL US sales@lookpolymers.com | 
| Physical Properties | Metric | English | Comments | 
|---|---|---|---|
| Density | 1.3928 g/cc | 0.050318 lb/in³ | 
| Mechanical Properties | Metric | English | Comments | 
|---|---|---|---|
| Film Elongation at Break, MD | 140 % | 140 % | ASTM D882A | 
| Film Elongation at Break, TD | 115 % | 115 % | ASTM D882A | 
| Film Tensile Strength at Break, MD | 186 MPa | 27000 psi | ASTM D882A | 
| Film Tensile Strength at Break, TD | 207 MPa | 30000 psi | ASTM D882A | 
| Thermal Properties | Metric | English | Comments | 
|---|---|---|---|
| Specific Heat Capacity | 1.17 J/g-°C | 0.280 BTU/lb-°F | Typical Mylar® | 
| Melting Point | 254 °C | 489 °F | Typical Mylar® via DSC | 
| Shrinkage, MD |           1.6 %                     @Temperature 150 °C, Time 1800 sec  | 
                  1.6 %                     @Temperature 302 °F, Time 0.500 hour  | 
        Unrestrained | 
| Shrinkage, TD |           0.90 %                     @Temperature 150 °C, Time 1800 sec  | 
                  0.90 %                     @Temperature 302 °F, Time 0.500 hour  | 
        Unrestrained | 
| Optical Properties | Metric | English | Comments | 
|---|---|---|---|
| Refractive Index | 1.64 - 1.67 | 1.64 - 1.67 | typical of Mylar® | 
| Optical Density | 38 | 38 | [%] | 
| Electrical Properties | Metric | English | Comments | 
|---|---|---|---|
| Dielectric Strength | 91.85 kV/mm | 2333 kV/in | 1/4" electrode 500 V/sec 25°C in air; ASTM D149 | 
| Dielectric Breakdown | 17500 V | 17500 V | 1/4" electrode 500 V/sec 25°C in air; ASTM D149 | 
| Comparative Tracking Index | 400 - 600 V | 400 - 600 V | |
| Hot Wire Ignition, HWI | 7.0 - 15 sec | 7.0 - 15 sec | |
| High Amp Arc Ignition, HAI | >= 120 arcs | >= 120 arcs | 
| Descriptive Properties | Value | Comments | 
|---|---|---|
| Yield (nominal) | 2600 in2/lb |