Phenolic Plastics

Properties
Excellent dielectric strength
Good machinability
Light weight
Heat and wear resistant
Resists corrosion and chemicals
Good mechanical strength & dimensional stability
Low moistue absorption

Applications
Terminal boards, switches, bearings, gears, wear strips, gaskets, washers, transformers, machining components and industrial laminates.

Phenolic sheet is a hard, dense material made by applying heat and pressure to layers of paper or glass cloth impregnated with synthetic resin. These layers of laminations are usually of cellulose paper, cotton fabrics, synthetic yarn fabrics, glass fabrics or unwoven fabrics. When heat and pressure are applied to the layers, a chemical reaction (polymerization) transforms the layers into a high-pressure thermosetting industrial laminated plastic.





PAPER REINFORCED PHENOLIC NEMA    XX per MIL-I-24768 PBG

Normal electrical applications, moderate mechanical strength, continuous operating temperature of 250°F.

CANVAS REINFORCED PHENOLIC NEMA C per MIL-I-24768 TYPE FBM
NEMA CE per MIL-I-24768 TYPE FBG

Good mechanical and impact strength with contiunuous operating temperature of 250°F.

LINEN REINFORCED PHENOLIC NEMA L per MIL-I-24768 TYPE FBI
NEMA LE per MIL-I-24768 TYPE FEI

Good mechanical & electrical strength. Recommended for intricate high strength parts. Continuous operating temperature 250°F.

NYLON REINFORCED PHENOLIC NEMA N-1 per MIL-I-24768 TYPE NPG

Superior electrical properties under humid conditions, fungus resistant, continuous operating temperature of 160°F.


MADE WITH USED IN FEATURES NEMA GRADE COLOR
PAPER PHENOLIC Mechanical grade, intricate punch parts, insulating washers, switch bases. terminal boards Requires little to no preheating. good cold shearing, cold punch XP XP XP Tan Black Chocolate
PAPER PHENOLIC Mechanical grade, intricate punch parts Excellent cold punch and cold shearing XPC XPC XPC Chocolate Tan Black
PAPER PHENOLIC Mechanical grade, punch parts 3/32" max thickness Non Nema, warm punch Tan Chocolate Black
PAPER PHENOLIC Mechanical grade Non Nema, warm punch Tan Chocolate Black
PAPER PHENOLIC Mechanical grade, terminal boards, structural parts, switch bases, washers, panels General purpose. high mechanical strength, electrical properties are secondary X Natural
PAPER PHENOLIC Electrical grade, switch board panels, relay and switch bases, breaker arms, barriers Electrical insulation in dry or humid conditions, good machining, fair mechanical strength XX XX Natural Black
PAPER PHENOLIC Electrical grade, panel boards, high voltage switch, gear, radio, television panels Electrical insulation, high humidity resistance, good dimensional stability, excellent resistance to splitting XXX XX Natural
PAPER PHENOLIC Mechanical grade, intricate punch parts, insulating washers, switch bases, terminal boards Solid black color throughout, requires little to no preheating, good cold shear and punch XP Black
PAPER PHENOLIC Mechanical grade, thick punch parts 3/32" through 1/4" Ultra Soft punch plate, cold punch. Solid black color throughout XPC XPC Natural Black
PAPER PHENOLIC Electrical grade, punch parts, electronic equipment, insulating washers and spacers Electrical insulation, low dielectric losses in severe humidity, warm punch XXP Tan
PAPER PHENOLIC Electrical grade, punch parts, radio & TV terminal boards, panels, U.L. listed as 65M03 unclad Cold punch and shearing, high insulation resistance and low dielectric losses under severe humidity XXXPC Natural
FINE WEAVE COTTON CLOTH PHENOLIC Mechanical grade, fine tooth gears, radio parts, terminal boards High mechanical strength, good appearance, good machining qualities L Natural
FINE WEAVE COTTON CLOTH PHENOLIC Electrical - mechanical grade, marine relay bases, terminal bases and strips, radio parts, high humidity applications Electrical and mechanical strength, moisture resistance LE LE Natural Black
FINE WEAVE COTTON CLOTH PHENOLIC Mechanical grade - for fine machined parts, gears, radio parts, terminal boards Fine weave canvas where better than CE machining characteristics are required & grade L cannot be justified Natural
MEDIUM WEAVE COTTON CLOTH PHENOLIC Mechanical grade, gears, pinions, spacers, structural applications Economy grade, high impact strength, good mechanical properties C Natural
MEDIUM WEAVE COTTON CLOTH PHENOLIC Mechanical - electrical grade, small gears, pinions, radio parts, marine switch board panels Economy grade, good acid resistance, low voltage, low frequency electrical performance CE Natural
MEDIUM WEAVE COTTON CLOTH PHENOLIC Mechanical grade, marine bearings, piston and packing rings, pump valve, doctor blades, marine Phenolic Low moisture absorption, dimensional stability Natural
MEDIUM WEAVE COTTON CLOTH PHENOLIC Mechanical grade, valves, plating tanks Low moisture absorption, good dimensional stability, good resistance to acids and alkalies Natural
MEDIUM WEAVE COTTON CLOTH PHENOLIC Mechanical grade, support blocks, spacers for liquid oxygen tanks Special formulation for cryogenic applications, property retention at extremely low temperatures Natural
MEDIUM WEAVE COTTON CLOTH PHENOLIC Mechanical grade, packing rings, pistons, bearings Canvas with molylodenum disulfide, low coefficient of friction Green
MEDIUM WEAVE COTTON CLOTH PHENOLIC Mechanical grade, wire stranders, heat dissipation applications Canvas with copper screen Natural
MEDIUM WEAVE COTTON CLOTH PHENOLIC Mechanical grade, pistons, packing rings, textile mill bearings Canvas with graphite, self-lubricating, low coefficient of friction Black
GLASS CLOTH MELAMINE Electrical - mechanical grade, switch board panels, arc barriers, circuit breaker parts, structural electrical parts High mechanical strength high arc and heat resistance, self-extinguishing, excellent electrical properties under dry conditions G-5 Gray
GLASS CLOTH MELAMINE Electrical - mechanical grade, marine switch board panels, structural parts High mechanical strength, high arc and heat resistance, self-extinguishing, excellent electrical properties under dry and humid conditions G-9 Gray
GLASS CLOTH SILICONE Electrical grade, class H insulation, heating-appliance insulation Good electrical properties under humid conditions, excellent heat and arc resistance, self-extinguishing G-7 White
GLASS CLOTH EPOXY Electrical - mechanical grade, terminal boards, high humidity applications, U.L. listed as 65M38 unclad High flexural, impact and bond strength at room temperatures, good electrical properties under dry and humid conditions G-10 Green
GLASS CLOTH EPOXY Electrical - mechanical grade, rotor slot insulation, structural members at elevated temperatures High mechanical strength at temperatures up 150°C, retains 50% of its flexural strength at elevated temperatures G-11 Green

ASTM or UL test Property General purpose Impact Non bleeding Electrical Heat resistant Glass reinforced Chemical resistant compound
PHYSICAL
D792  Specific gravity  1.35- 1.46  1.36- 1.41  1.37- 1.38  1.36- 1.75  1.41- 1.84  1.7- 2.0  1.37- 1.75 
D570  Water absorption, 24 hours, 1/8 inch thick (%)  0.6-0.7  0.6-0.9  0.8-0.9  0.05- 0.20  0.30- 0.35  0.05- 0.2  0.20- 0.40 
MECHANICAL
D651  Tensile strength (psi)  6,500- 7,000  6,000- 7,000  6,000- 7,000  5,000- 7,000  5,000- 6,000  6,000- 12,000  7,000- 9,000 
D790  Flexural modulus (10~5 psi)  11-13  12  10  17-25  14  20-30  10 
D790  Flexural strength (psi)  9,000- 11,000  10,000  10,000  9,000- 11,000  10,000  12,000- 24,000  9,500 
D256  Impact strength, izod (ft-lb/in. of notch)  0.30- 0.35  0.6- 1.05  0.28  0.28- 0.45  0.26  0.4-1.5  0.50 
D785  Hardness, Rockwell E  70-95  82  82  75-88  94  92-104  76 
THERMAL
C177  Thermal conductivity (10~4 cal - cm/sec- cm~2- °)  7.1  7.9  16.0  8.8 
D696  Coefficient of thermal expansion (10~5 in./in.-°)  3.95  3.56  4.40  2.60  2.80  1.80  3.60 
D648  Deflection temperature (°) 
At 264 psi 
275-360  270-500  370  310-400  330-380  370-550  360-430 
UL94  Flammability rating 1/8 inch  V-1  HB  V-0  V-0  V-0  HB 
ELECTRICAL
D149  Dielectric strength (V/mil) short time, 1/8 in. thick  350  350-400  200  400  170  400  175 
D150  Dielectric constant At 1kHz  5.2-5.3  5.2-5.4  4.9-6.5  11.7  4.4  7.8 
D150  Dissipation factor At 1kHz  0.04- 0.05  0.04- 0.06  0.025- 0.10  0.15  0.03  0.12 
D257  Volume resistivity (ohm-cm) At 73°, 50% RH  10~11- 10~12  10~11- 10~12  10~12  10~11- 10~13  10~12  10~12  10~11 
D495  Arc resistance(s)  100  50  184  181  181  -



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