Properties
Specific Gravity
1.19
Rock well hardness
M100
Water Absorption (24hrs.)
0.3%
Compressive Yield
1260 kg/ cm2
Modulus of Elasticity
3x104 kg/ cm2
Tensile: Rupture
560 kg/ cm2 and up
Elongation
3-7 %
Flexural strength
1050 kg cm 2
Shear strength
630 kg/ cm2
Impact Strength: (200 gr. Steel bell)
0.4 m
Refractive index
1.49
Light transmittance
91 % and up
Heat distortion temp.
85 deg C
Coefficient of of thermal conductivity
4-6x10 4cal/ sec/ cm2/ cm/ deg C
Coefficient of Thermal linear expansion
7x10(5) cm2/cm/ deg C
Max. recommended
Continuous Service temp.
Hot forming temp.
140-160 deg C
Specific heat
0.35 cal/gr. Deg C
Dielectric strength
20 kv/ mm
Volume resistivity
> 10(15) ohm-cm
EFFECTS OF SOLVENTS
Thickness (m/m)
Tolerance (m/m)
2.0
-/+ 0.3
2.3
2.5
2.8
3.0
-/+ 0.4
3.8
4.8
-/+ 0.5
5.0
5.8
-/+ 0.6
6.0
7.8
-/+ 0.8
8.0
9.8
-/+ 1.0
10.0
12.0
15.0
-/+ 1.2
18.0
-/+ 1.3
20.0
-/+ 1.5
25.0
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