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 |
- |
|
