PHYSICAL PROPERTIES OF MICA GRADE V1
|
Characteristic
|
Unit
|
Muscovite
|
Colour
|
|
Ruby / Green
|
Density
|
gm/cm3
|
2.6 - 3.2
|
lb/ln3
|
0.095-0.116
|
Specific Heat
|
|
0.21
|
Hardness
|
Moh Scale
|
2.8 - 3.2
|
Shore Test
|
80 - 105
|
Optic Axial Angle
|
|
55 - 75
|
Tensile Strength
|
kgf/cm2
|
about 1750
|
lbf/in2
|
about 25000
|
Shear Strength
|
kgf/cm2
|
2200 - 2700
|
lbf/in2
|
31000 - 38000
|
Compression Strength
|
kgf/cm2
|
1900 - 2850
|
lbf/in2
|
27000 - 32000
|
Modulus of Elasticity
|
kgf/cm2 x 10-3
|
1400 - 2100
|
lbf/in2 X 10-6
|
20 - 30
|
Coefficient of expansion per °C perpendicular to cleavage plane
|
|
9 X 10-6 - 36 X 10-6
|
Calcining Temperature
|
C
|
700 - 800
|
F
|
1290 - 1470
|
Maximum operating temperature
|
C
|
500 - 600
|
F
|
930 - 1110
|
Thermal conductivity
|
|
|
Perpendicular to cleavage planes
|
Gm.cal/sec/cm2/C/cm
|
about 0.0013
|
BTU/hr/ft2/0f/ft
|
about 0.31
|
Parallel to cleavage planes
|
Gm.cal/sec/cm2/C/cm
|
|
BTU/hr/ft2/0f/ft
|
|
Water of constitution %
|
|
4.5
|
Moisture absorption
|
|
Very low
|
Apparent electric strength
|
0.001" to 0.003" KV/mm
|
120 - 200
|
thick Volts per 0.001"
|
3000 - 5000
|
R.M.S. at 15° C (60°F)
|
0.01" to 0.05" KV/mm
|
40 - 80
|
thick Volts per 0.001"
|
1000 - 2000
|
Permittivity at 15°C(60oF)
|
|
6 - 7 |
Power Factor (loss tangent)
|
@ 15° C (60° F)
|
0.0001 - 0.0004
|
Volume Resistivity
|
25° C (77° F) ohm cm
|
40 x 1013-2 x 1017
|
Acid reaction
|
|
Affected by Hydrofluoric Acid
|