|
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,
25ºC (ft lb/in.)
|
D
256
|
0.2-0.4
|
|
Unnotched,
25ºC (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 ºF) |
C
177
|
1.45
|
| Specific
Heat (Btu/lb ºF) |
C
351
|
0.55
|
| Expansion |
- |
- |
|
(Linear Coefficient/ºC)
|
- |
- |
|
-40 to 25ºC
|
D
696
|
8.1
x 10-5
|
|
25 to 75ºC
|
D
696
|
11.4
x 10-5
|
|
75 to 125ºC
|
D
696
|
14.3
x 10-5
|
| Heat
Distortion, |
- |
- |
|
264 psi (ºC/10
mil)
|
D
648
|
55-65
|
|
(mils at
130ºC)
|
D
648
|
36-50
|
| Glass
Transition Temperature (ºC) |
[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 (ºF) |
D
1929
|
710
|
| Self
ignition Temperature (ºF) |
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 (ºC) |
- |
- |
|
Continuous
Service
|
—
|
100
|
|
One Time,
One-hour Duration
|
—
|
150
|
| Chemical |
- |
- |
| Percent
Weight Gain (7 days immersion, 25ºC) |
- |
- |
| 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 (21.7ºC) (cm3 (STP) cm/cm3
sec)
(cm Hg)1 x 10" |
- |
0.17
|
| Oxygen
Transmission Rate (cc/m3/day) 21.5 mil thickness,
24ºC, 100% O2 |
- |
2.9
|
| Water
Vapor Transmission Rate (g/m3/day) 21.5 mil)
thickness. 22ºC, 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
|
