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M-4 Fireclay


Oxide Weight368.87
Formula Weight405.80
If this formula is not unified correctly please contact us.

From Industrial Minerals Ione, California clay deposit. Roller milled, air floated. Has excellent adhesiveness, low abrasiveness and free flowing qualities. Similar to Lincoln Fireclay.

It is used for insecticide and its data sheet does not highlight ceramic qualities.

We measured porosity of 3% at cone 10R, 3% at cone 8 and fired shrinkage of 8.5% at cone 10R, 9% at cone 10 oxidation, 8.5% at cone 8. Fired bars show a straw color at cone 5 with a shift to greyish at cone 8. The color is stable cone 8-11 as a variegated green-grey of slightly increasing density. At 10R the scum (from soluble salts) turns it variegated light and dark brown. At cone 11 and 10R it is still not vitrified looking. Drying shrinkage is about 5.5%.

Their data sheet:
Moisture: 1.9%
Soluble Sulfates: .15%
Minus 325 mesh: 96%
pH: 5.75
Density, lbs per cubic foot: 26.1
Oil Absorption (spatula rub-out method): 40.4
Bulk Density (lbs per cubic foot): 26.1

M-4 Fireclay fired bars

M-4 Fireclay fired bars

Cone 10R top, cone 11 oxidation downward below that.

Out Bound Links

In Bound Links

By Tony Hansen

XML for Import into INSIGHT

<?xml version="1.0" encoding="UTF-8"?> <material name="M-4 Fireclay" descrip="FIRECLAY" searchkey="" loi="0.00" casnumber="70694-09-6"> <oxides> <oxide symbol="CaO" name="Calcium Oxide, Calcia" status="" percent="0.110" tolerance=""/> <oxide symbol="MgO" name="Magnesium Oxide, Magnesia" status="" percent="0.400" tolerance=""/> <oxide symbol="K2O" name="Potassium Oxide" status="" percent="1.180" tolerance=""/> <oxide symbol="Na2O" name="Sodium Oxide, Soda" status="" percent="0.570" tolerance=""/> <oxide symbol="TiO2" name="Titanium Dioxide, Titania" status="" percent="1.070" tolerance=""/> <oxide symbol="Al2O3" name="Aluminum Oxide, Alumina" status="" percent="24.610" tolerance=""/> <oxide symbol="SiO2" name="Silicon Dioxide, Silica" status="" percent="59.200" tolerance=""/> <oxide symbol="Fe2O3" name="Iron Oxide, Ferric Oxide" status="" percent="1.860" tolerance=""/> </oxides> <volatiles> <volatile symbol="LOI" name="Loss on Ignition" percent="9.100" tolerance=""/> </volatiles> </material>

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