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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, Wisconsin
Properties 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
