PROPERTY
ASTM TEST METHOD
VALUE
CHARACTERISTICS
 Excellent optics Best scratch and chemical resistance
 SPECIFICATIONS
 L-P-516A, Class G3
MIL-P-77C, Class G3
P-8257A, Class G3
LA-499-Class G3
UL 94HB
(1)
Optical
-
-
Transmittance, %
D 1003 - 61
90-92
Effect of Sunlight
NIL
Haze %
1-2
Refractive Index
D 542
1.50
Physical and Mechanical - -
Density (g/cm3)
D 792
1.31
Tensile Strength, break (103 psi)
D 638
5-6
Tensile Modulus (105 psi)
D 638
3
Flexural Yield Strength (103 psi)
D 790
7.5-8.5
Flexural Modulus (105 psi)
D 790
2.5-3.3
Compressive Strength (103 psi)
D 695
22.5
Compressive Modulus (105 psi)
D 695
2.3-3.0
Izod Impact - -

Notched, 25C (ft lb/in.)

D 256
0.2-0.4

Unnotched, 25C (ft lb.in.)

D 256 (modified)
2-3
Gardner Impact, (#2 hammer, standard base, 1/2 in., ft lb)
0.63
Hardness - -

Rockwell

D 785
M95-M100

Barcol (15-soc value)

25-28

Shore D

88-89
Abrasion - -

(x polymethylmethacrylate)

- -

Taber

D 1044
15-20

Bayer

F 735
5-7
Mold Shrinkage (% volume)
12-13
Poisson's Ratio (1/2 in.)
0.395:1
Thermal - -
Conductivity (Btu in./hr ft2 F)
C 177
1.45
Specific Heat (Btu/lb F)
C 351
0.55
Expansion - -

(Linear Coefficient/C)

- -

-40 to 25C

D 696
8.1 x 10-5

25 to 75C

D 696
11.4 x 10-5

75 to 125C

D 696
14.3 x 10-5
Heat Distortion, - -

264 psi (C/10 mil)

D 648
55-65

(mils at 130C)

D 648
36-50
Glass Transition Temperature (C)
[Estimate]
85
Flammability
The follow seven ratings are not intended to reflect hazards of this material under actual fire conditions.
- -
Burn Rate (in./min.)
-
-

1.3-2.9 mm thickness

D 635
<1

0.05 mm thickness

D 635
25
1Underwriters Laboratories Standard 94 HB (1/8 in. thick, in./min.)
0.7
Flash ignition Temperature (F)
D 1929
710
Self ignition Temperature (F)
D 1929
720
Products of Burning
CO2 H2O

(incomplete combustion)

-
propane
Smoke Density Rating (%)
D 2843
26.3
Maximum Smoke Density (%)
D2843
39.3
Maximum Operating Temperature (C) - -

Continuous Service

100

One Time, One-hour Duration

150
Chemical - -
Percent Weight Gain (7 days immersion, 25C) - -
Distilled Water -
0.7
30% H2SO4 -
0.5
3% H2SO4 -
0.7
10% HNO3 -
0.7
10% HCL -
0.4
10% NH4OH -
0.8
10% NaOH
-
0.6
2% Na2CO2 -
0.6
1% NaCL -
0.6
3% H2O2 -
0.7
95% Ethyl Alcohol -
0.1
50% Ethyl Alcohol -
0.5
Acetone -
0.5
Ethyl Acetate -
0.3
Carbon Tetrachloride -
0.6
Chloroform -
1.5
5% Acetic Acid -
0.6
Gasoline -
0.1
Oleic Acid -
0.2
Benzene -
0.7
Toluene -
0.6
Oxygen Permeability (21.7C) (cm3 (STP) cm/cm3 sec)
(cm Hg)1 x 10"
-
0.17
Oxygen Transmission Rate (cc/m3/day) 21.5 mil thickness, 24C, 100% O2 -
2.9
Water Vapor Transmission Rate (g/m3/day) 21.5 mil) thickness. 22C, 100% R.H. -
2.5
Electrical - -
Dielectric Constant, (103 cycles/sec)
D 150
4.2
Dielectric Strength, Short Time 1/8" thickness, (volts/mil)
D 149
380
Dielectric Strength, Step-by-Step, 1/8" thickness, (volts/mil)
D 149
320
Dissipation/Power Factor, (103 cycles/sec)
D 150
.01
(2) Surface Resistance (1011 ohms)
D 257
>1000
Arc Resistance, (sec)
D 495
249

(1) Underwriter's Laboratories, Inc. Flammability Classification File # 53966
(2) Measured with electrodes 10 inches apart at 500 VDC


Homalite, Inc., assumes no obligation or liability for any information furnished by it, or results obtained with respect to these products. All such advice is given and accepted at the buyer's risk. Users should be governed by their own tests, made under conditions representative of those to which the product wil be subjected in actual service.

*CR-39 is a registered trademark of PPG Industries.


 Environmental Consideration

RECOMMENDED USES

- -

 H-911
HARSH LIGHTING
STRONG CHEMICALS
MOLTEN SPATTER
RADIATION
HIGH HEAT
STERILIZATION
  STEAM
  CHEMICALS
IMPLOSION RESISTANCE
SELF EXTINGUISHING
SCRATCH RESISTANCE
EMI/RFI COATING
MIRROR COATING
SILK SCREENING
-

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X
X

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