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Potassium Aluminosilicate (Muscovite Mica)

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Description

Mica has an estimable electrical, physical, mechanical and thermal pertinacity properties. It has high transparency, optical clarity, flatness, non-breakability and heat resistance. As such, it is suitably used as windows in Kerosene stove, Wood stoves, Furnace peep-holes and microwave ovens.


Mica eliminates risk of cracks, breakage, jerks and can easily withstand shocks, strains and vibration during operations at higher temperatures and prevent grassing. Mica also provide complete safety, versatility, durability and reliability and retain its basic strength.


Mica sheet can be expose to high temperature up to ~ 540 °C (~1000F)

Properties

General

Density

ρ

2.6 - 3.2 g/cm³ at 20 °C

Mechanical

Hardness, Mohs

HM

2 - 3.2 [-] at 20 °C

Show Aluminium Silicate materials with Hardness, Mohs of 2 - 3.2 [-] at 20 °C

Tensile strength

Rm

255 - 296 MPa at 20 °C

Show Aluminium Silicate materials with Tensile strength of 255 - 296 MPa at 20 °C

Thermal

Coefficient of thermal expansion

α

8E-6 - 9E-6 1/K at 200 °C

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Coefficient of thermal expansion, transverse

αtrans

1.5E-5 - 2.5E-5 1/K at 100 °C

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Max service temperature

Tmax

400 - 500 °C

no decomposition

Specific heat capacity

cp

0.21 J/(kg·K) at 25 °C

Thermal conductivity

λ

8 W/(m·K) at 20 °C

Electrical

Dielectric constant

εr

6.5 - 9 [-] at 20 °C

Electrical resistivity

ρel

1.00E+10 - 1.00E+13 Ω·m at 20 °C

Power factor

PF

0.08 - 0.09 [-] at 25 °C

60 cycles

Optical

Optical axial angle

α

38 - 47 °

Optical plane orientation

Perpendicular to plane of symmetry

Refractive index, α

nd,α

1.55 - 1.57 [-]

Refractive index, β

nd,β

1.58 - 1.61 [-]

Refractive index, γ

nd,γ

1.59 - 1.61 [-]

Technological properties

Application areas

Rigid or flexible mica sheets can be used for electrical insulating, high temperature mica washers, mica gaskets, heaters manufacturing and many other applications

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This material data has been provided by Goodfellow.

All metrics apply to room temperature unless otherwise stated. SI units used unless otherwise stated.
Equivalent standards are similar to one or more standards provided by the supplier. Some equivalent standards may be stricter whereas others may be outside the bounds of the original standard.