MYLAR® EL21

Product Description

Mylar® EL21 polyester films are flexible strong and durable films with an unusual balance of properties, making them suitable for a variety of industrial applications. The excellent dielectric strength, moisture resistance, and physical toughnes make Mylar® EL21 a very versatile and functional insulating material.

General Product Info

Mylar® EL21 films offer high dielectric strength, good chemical resistance, and exceptional durability in high-temperature enviroments.

Typical Applications

Mylar® type EL21 films, similar to Mylar® type MO films, are heavy gauge insulating films designed for general purpose electrical/electronic applications, such as transformers, laminates, bus bars, and punched parts.

Approvals

UL Recognition - Product has been registered with Underwriters Laboratories.

Typical Properties

Available Thickness [Gauge] 750;    900;    1000;    1400

Property Thickness Value Units Test ELECTRICAL Breakdown Voltage  750  17.5  kV  ASTM D149 1/4" electrode 500 V/sec 25℃ in air  Breakdown Voltage  900  18.4  kV  ASTM D149 1/4" electrode 500 V/sec 25℃ in air  Breakdown Voltage  1000  19.0  kV  ASTM D149 1/4" electrode 500 V/sec 25℃ in air  Breakdown Voltage  1400  20.0  kV  ASTM D149 1/4" electrode 500 V/sec 25℃ in air    OPTICAL Opacity  750  38  %  optical density  Opacity  900  41  %  optical density  Opacity  1000  42  %  optical density  Opacity  1400  46  %  optical density    PHYSICAL Density  750  1.3928  g/cc    Density  900  1.3920  g/cc    Density  1000  1.3925  g/cm3    Density  1400  1.3925  g/cc    Elongation at Break MD  750  140  %  ASTM D882A  Elongation at Break MD  900  150  %  ASTM D882A  Elongation at Break MD  1000  150  %  ASTM D882A  Elongation at Break MD  1400  170  %  ASTM D882A  Elongation at Break TD  750  115  %  ASTM D882A  Elongation at Break TD  900  130  %  ASTM D882A  Elongation at Break TD  1000  140  %  ASTM D882A  Elongation at Break TD  1400  170  %  ASTM D882A  Tensile Strength MD  750  27  kpsi  ASTM D882A  Tensile Strength MD  900  27  kpsi  ASTM D882A  Tensile Strength MD  1000  27  kpsi  ASTM D882A  Tensile Strength MD  1400  26  kpsi  ASTM D882A  Tensile Strength TD  750  30  kpsi  ASTM D882A  Tensile Strength TD  900  29  kpsi  ASTM D882A  Tensile Strength TD  1000  29  kpsi  ASTM D882A  Tensile Strength TD  1400  25  kpsi  ASTM D882A  Yield (nominal)  750  2,600  in²/lb    Yield (nominal)  900  2,200  in²/lb    Yield (nominal)  1000  2,000  in²/lb    Yield (nominal)  1400  1,400  in²/lb      THERMAL Shrinkage MD (150℃)  750  1.6  %  Unrestrained @ 150℃/30 min  Shrinkage MD (150℃)  900  1.6  %  Unrestrained @ 150℃/30 min  Shrinkage MD (150℃)  1000  1.5  %  Unrestrained @ 150℃/30 min  Shrinkage MD (150℃)  1400  1.3  %  Unrestrained @ 150℃/30 min  Shrinkage TD (150℃)  750  0.9  %  Unrestrained @ 150℃/30 min  Shrinkage TD (150℃)  900  1.1  %  Unrestrained @ 150℃/30 min  Shrinkage TD (150℃)  1000  1.1  %  Unrestrained @ 150℃/30 min  Shrinkage TD (150℃)  1400  0.8  %  Unrestrained @ 150℃/30 min

Standard Put-ups

Core I.D. (Inches) Roll O.D. (Inches) Thickness (Gauge) Length (Feet) 3 13 750 1,360 3 13 900 1,140 3 13 1000 1,020 3 13 1400 730 10 (Master roll) 750 5,400 10 (Master roll) 900 4,520 10 (Master roll) 1000 4,070 10 (Master roll) 1400 2,850

Contact Info

Mylar® Specialty Films U.S. Limited Partnership 3600 Discovery Drive Chester, VA 23836-6436 USA Tel: (800) 635-4639 Fax: (804) 530-9867

Disclaimer

Note: These values are typical performance data for Mylar® Specialty Films' polyester film; they are not intended to be used as design data. We believe this information is the best currently available on the subject. It is offered as a possible helpful suggestion in experimentation you may care to undertake along these lines. It is subject to revision as additional knowledge and experience is gained. Mylar® Specialty Films makes no guarantee of results and assumes no obligation or liability whatsoever in connection with this information. This publication is not a license to operate under, or intended to suggest infringement of, any existing patents. CAUTION: Do not use in medical applications involving permanent implantation in the human body (Mylar® Specialty Films Medical Policy). For other medical applications, see the Medical Caution Statement. Mylar® Specialty Films accepts no liability for use of it's products in medical applications not reviewed and approved by Mylar® Specialty Films or for product misuse. Mylar® Specialty Films supplies products to an agreed specification and does not manufacture products designed specifically for medical end use. Melinex®, Mylar® and Melinex® STTM are registered trademarks of Mylar® Specialty Films U.S. Limited Partnership.