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PHENOLIC

PHENOLIC

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.

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

APPLICATIONS
Terminal boards
Switches
Bearings
Gears
Wear strips
Gaskets
Washers
Transformers
Machining components
Industrial laminates

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


Typical properties of phenolics

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 (105 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 (104 cal - cm/sec- cm2- ┬░C)

7.1

7.9

-

16.0

-

-

8.8

D696

Coefficient of thermal expansion (105 in./in.-┬░C)

3.95

3.56

4.40

2.60

2.80

1.80

3.60

D648

Deflection temperature (┬░F)
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┬░F, 50% RH

1011- 1012

1011- 1012

1012

1011- 1013

1012

1012

1011

D495

Arc resistance(s)

100

50

-

184

181

181

-

Thermoset Plastic Laminate.
Thermoset Plastic Laminate is a uniformly dense and structurally strong material that will not soften appreciably under the reapplication of heat. It is an extremely durable plastic that is lightweight and moisture resistant. Industrial laminates are thermoset resin impregnated reinforcing materials (paper, cotton fabric, glass fabric, etc.) that are cured under heat and pressure to form solid shapes having high mechanical and electrical insulating properties. Laminates are available in sheet, rod, tube, and angle. Since laminates are comprised of a combination of materials, they are also referred to as composites.
Standard stock grades include:

G1O/FR4 Glass Reinforced Epoxy - natural (yellowish to light green) The most versatile all around laminate, this grade is a continuous glass woven fabric base impregnated with an epoxy resin binder. It has extremely high mechanical strength, good dielectric loss properties, and good electric strength properties, both wet and dry. Certifies to Mil-I-24768/27 GEE-F

G11/FRS Glass Reinforced Epoxy - natural (yellow green to amber) This grade is similar to G10/FR4, with the addition of a higher operating temperature and some improved mechanical strength at elevated temperatures. Certifies to Mil-I-24768/28 GEB -F

G5/G9 Class Reinforced Melamine - natural (grayish brown) This grade is composed of a continuous glass woven cloth base impregnated with a melamine resin binder. Melamines are the hardest of all laminates, exhibiting good dimensional stability and are resistance. It is also caustic resistant. Certifies to Mil-I-24768/1 CME

G7 Glass Reinforced Silicone - natural (cream to white) Composed of a continuous glass woven cloth base impregnated with a silicone resin binder,this grade has excellent heat and are resistance. It has extremely good dielectric loss properties under dry conditions and good electrical properties under humid conditions, although the percentage of change is high. Certifies to Mil-I-24768117 GSG

X/XX/XXX Paper Reinforced Phenolic - natural (tan) This grade is composed of a paper base impregnated with a phenolic resin binder. It has good electric strength properties with fair mechanical strength. Outstanding for use as template material and or backup material. Certifies to Mil-I-24768112 PBM,I11 PBG and /10 PBE

C/CE Cotton Fabric Reinforced Phenolic - natural (light tan to brown) This grade is composed of a continuous cotton woven cloth impregnated with a phenolic resin binder. This grade contains a medium weave canvas and is known primarily for it's mechanical properties. This grade is not recommended for primary insulation. Certifies to Mil- I-24768/14 FBG

Linen L/LE Cotton Fabric Reinforced Phenolic - natural (light tan to brown) This grade is composed of a continuous cotton woven cloth impregnated with a phenolic resin binder. This grade contains a fine weave linen and, like the canvas phenolic, is known for it's mechanical properties. The finer weave allows for machining more intricate details than Canvas, like gear teeth. This grade is not recommended. for primary insulation. Certifies to Mil-I-24768/13 FBE

Mat Glass Reinforced Polyester - GPO-1 (tan) and GPO-3 (red) These grades are composed of random mat (non-woven) fiberglass reinforcement held together by a polyester resin binder. GPO-3 offers superior arc and track resistance.

THERMOSET SHEET TOLERANCES
All measurements are in inches

THICKNESS
Decimal
Inches

ALL
Glass
Grades

ALL
GPO
Grades

ALL
Paper
Grades

C
Canvas
Grade

CE
Canvas
Grade

L
Linen
Grade

LE
Linen
Grade

.005

┬▒.001

-

-

-

-

-

-

.010

┬▒.002

-

┬▒.002

-

-

┬▒.003

┬▒.003

.015

┬▒.003

-

┬▒.0025

-

-

┬▒.0035

┬▒.0035

.020

┬▒.004

-

┬▒.003

-

-

┬▒.004

┬▒.004

.025

┬▒.0045

-

┬▒.0035

-

-

┬▒.004

┬▒.004

.031

┬▒.0065

┬▒.0075

┬▒.0035

┬▒.0065

┬▒.0065

┬▒.005

┬▒.005

.047

┬▒.0075

-

┬▒.0045

┬▒.0075

┬▒.0075

┬▒.0055

┬▒.0055

.062

┬▒.0075

┬▒.0075

┬▒.005

┬▒.0075

┬▒.0075

┬▒.006

┬▒.006

.093

┬▒.009

┬▒.009

┬▒.007

┬▒.009

┬▒.009

┬▒.007

┬▒.007

.125

┬▒.012

┬▒.010

┬▒.008

┬▒.010

┬▒.010

┬▒.008

┬▒.008

.156

┬▒.015

┬▒.011

┬▒.009

┬▒.011

┬▒.011

┬▒.009

┬▒.009

.187

┬▒.019

┬▒.0125

┬▒.010

┬▒.0125

┬▒.0125

┬▒.010

┬▒.010

.250

┬▒.022

┬▒.015

┬▒.012

+.030

┬▒.015

+.024

┬▒.012

.312

┬▒.026

-

┬▒.0145

+.035

┬▒.0175

+.029

┬▒.0145

.375

┬▒.030

┬▒.020

┬▒.017

+.040

┬▒.020

+.034

┬▒.017

.437

┬▒.033

-

┬▒.019

+.044

┬▒.022

+.038

┬▒.019

.500

┬▒.036

┬▒.024

┬▒.021

+.048

┬▒.024

+.042

┬▒.021

.625

┬▒.040

┬▒.027

┬▒.024

+.053

┬▒.027

+.053

┬▒.024

.750

┬▒.043

┬▒.029

┬▒.027

+.058

┬▒.029

+.054

┬▒.027

.875

┬▒.046

-

┬▒.030

+.062

┬▒.031

+.060

┬▒.030

1.000

┬▒.049

┬▒.033

┬▒.033

+.065

┬▒.033

+.065

┬▒.033

1.250

┬▒.055

-

┬▒.037

+.073

┬▒.037

+.073

┬▒.037

1.500

┬▒.061

-

┬▒.041

+.081

┬▒.041

+.081

┬▒.041

1.750

┬▒.067

-

┬▒.045

+.089

┬▒.045

+.089

┬▒.045

2.000

┬▒.073

-

┬▒.049

+.097

┬▒.049

+.097

┬▒.049

Sheet tolerance thickness - At least 90% of the sheet will measure within the tolerance given in the above table.

Sheet tolerance Length and Width - The tolerance in length and width of standard sheet sizes will be plus or minus 1" from standard.

Thickness
range "
from - to

Percentage
warp & twist
allowed

36" width
warp (")
allowed

48" length
warp (")
allowed

.031 - .062

5.0%

1.800

2.400

.063 - .125

2.5%

.900

1.200

.126 - 2.50

1.0%

.360

.480

.251 - .750

0.5%

.180

.240

.750 - max

0.25%

.090

.120

Sheet tolerance Warp and Twist - In the case of warp, this percentage is stated in terms of the lateral dimensions (length or width); in the case of twist, one corner to the diagonally opposite corner.

** The value for grade G-7 is 1.5 percent
Note 1- These values do not apply to cut pieces but only to sheet sizes manufactured.
Note 2- For method of measuring warp and twist, see ASTM-D-709

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