Cordierite Powder (2MgO·2Al2O3·5SiO2) from READE

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Cordierite Powder Synonyms:

magnesium aluminosilicate, dichroite, iolite, cordierite, cordierite powder, magnesium alumia silicate, alumino magnesium silicate, CAS# 1302-88-1,

Cordierite Powder Designations:

1) Chemical Name: Magnesium-alumina silicate / Magnesium iron aluminium cyclosilicate

2) Chemical Formula: (Mg,Fe)₂Al₄Si₅O₁₈

Cordierite Powder Description:

1) Made from talc mixed with clay and aluminum oxide.

2) There are no known large deposits of natural cordierite.

3) It has a low coefficient of thermal expansion, high mechanical strength, low density and low dielectric loss

Cordierite Powder Theoretical Analysis:

MgO= 13.8%, Al₂O₃= 34.8% and SiO₂= 51.4%

Cordierite Powder Standard Granulations Available:

1) Crushed and sized grain or powder

2) Standard Granulations Available

a) APS= 6 to 7 microns
b) 80% finer than 45 microns
c) Custom granulations for large volume users

Cordierite Powder Nominal Physical Constants:

Molecular Weight (g/mol.)	595
Bulk Density (g/cm3)	0.42
Thermal conductivity (cal/s-cm-°C)	0.002
Melting Point (°C)	~1179- 1471
Specific Gravity (g/cu m)	~2.3
Specific heat @25°C (cal/g-°C)	0.35
Color	tan
Mohs Hardness	7
Water Absorption % at room temperature	0.02 to 3.2
Thermal Expansion (in/in°C (20deg. C-700 deg.C)	2.3 X10-6
Specific Gravity	2.6- 2.7
Crystallography	orthorhombic

Cordierite Powder Typical Applications:

a) To manufacture kiln furniture, molded honeycomb-like catalyst supports in auto emission reduction devices, thick films, porous ceramics, feed- thru insulators, vitrified ceramics, high frequency insulators, high performance resistors, special furnace shapes, heating element supports, exhaust catalyst supports, burner tubes, refractory setters and substrates.

b) Cordierite is not a very common mineral, but is important as a component of glass ceramic materials used in applications where the material must have minimal thermal expansion (eg cooker hobs).