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Fish Paper Characteristics
Fish paper (vulcanized fiber) is a strong, flexible paperboard that has good mechanical properties. It offers excellent electrical insulating and arc-quenching properties. It is a good choice for applications in which moisture is not a factor and where temperatures do not exceed 425 degrees F. It can be die cut and machined.
See the chart below for details of fish paper’s material properties.
Fish paper is insoluble in ordinary solvents and is unaffected by ammonia, turpentine, naphtha, benzene, petroleum, alcohol and ether. As a thermoset plastic, it has superior bending qualities and is especially useful for armature slot insulation. Characteristics include:
- Flexible yet durable
Excellent insulating properties- Can be die-cut or machined
- Superior punching and forming qualities
Applications for Fish Paper
- Motor and switch insulation
- Washers
- Coil insulation
- Arc shields
- Gaskets
- Transformer insulation
Contact a Dielectric Manufacturing knowledge expert to discuss the use of fish paper for fabrication of your parts. Call 800-367-9122 or email sales@dielectricmfg.com.
We also are a distributor of fish paper material. Contact us about fulfilling your material needs and to get a quote.
Fish Paper Material Properties
Dielectric Manufacturing, Richfield, Wisconsin USA dielectricmfg.com Fish Paper Material Properties Provided By Dielectric Manufacturing, Richfield, WisconsinProperties Thickness (inches) Units Commercial Electrical Density .062" grams/cc 1.20 1.20 Specific Volume .062" cu. in./lb 23.0 23.0 Mechanical Tensile Strength MD .062" psi 16000 18000 CD .062" psi 9000 10000 Modulus of Elasticity in Tension MD .062" psi x 105 12.0 12.0 CD .062" psi x 105 8.0 8.0 Flexural Strength MD .062" psi 15000 15000 CD .062" psi 13000 13000 Compressive Strength .062" psi 35000 35000 Impact Strength - Izod Edgewise MD .062" ft-lbs/in. notch 2.0 2.5 CD .062" ft-lbs/in. notch 1.8 2.0 Hardness - Rockwell R Scale .062" Divisions 80 70 Bond Strength - ASTM D-952 .062" psi 900 900 Bursting Strength -Mullen .016" psi - 325 Tear Strength - Elmendorf MD .016" grams - 550 CD .016" grams - 700 Electrical Dielectric Strength - Short Time .016" volts/mil 230 300 .062" volts/mil 200 215 .125" volts/mil 195 200 Arc Resistance - ASTM D-495 .062" seconds 80 125 Physical Thermal Conductivity - 149° F Btu/hr/ft2/°F/ft. 0.168 0.168 Specific Heat Btu/lb/°F 0.403 0.403 Heat Resistance - Continuous °F 230 - 240 230 - 240 Thermal Expansion x 10-5 MD in/in/°F 1.1 1.1 CD in/in/°F 1.7 1.7 Dimensional Change per % change in Moisture Content Thick. % 1.0 1.0 MD % 0.1 0.1 CD % 0.25 0.25 Water Absorption - 24 hours .062" % 66.0 63.0 Coefficient of Friction - Fiber on Fiber 0.16 0.16 Coefficient of Friction - Fiber on Smooth Cast Iron 0.21 0.21 Flammability - ASTM D-635 .062" in/mm 0.5 0.5



