Huber Martoxid® MR-70 Calcined Aluminum Oxide

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Huber Martoxid® MR-70 Calcined Aluminum Oxide
Categories:	Ceramic; Oxide; Aluminum Oxide
Material Notes:	Martoxid® MR-70 calcined aluminum oxide is a high compressible superground alumina utilized as a reactive binding component for shaped and unshaped refractory products as well as for high performance ceramics, produced in Bergheim, Germany. CAS No.: 1344-28-1 EC/EINECS No.: 215-691-6 Information provided by J.M. Huber Corporation
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Physical Properties	Metric	English	Comments

Specific Gravity	2.15 - 2.38 g/cc @Pressure 100 MPa	2.15 - 2.38 g/cc @Pressure 14500 psi	Green
	3.74 - 3.95 g/cc @Treatment Temp. 1600 °C, Time 7200 sec	3.74 - 3.95 g/cc @Treatment Temp. 2910 °F, Time 2.00 hour	Fired
Bulk Density	0.900 g/cc	0.0325 lb/in³
Water Absorption	20 %	20 %
Particle Size	0.10 - 0.40 µm	0.10 - 0.40 µm	d10, Cilas 1064
	0.50 - 0.80 µm	0.50 - 0.80 µm	d50, Cilas 1064
	1.5 - 3.0 µm	1.5 - 3.0 µm	d90, Cilas 1064
Specific Surface Area	6.0 - 10 m²/g	6.0 - 10 m²/g	BET

Component Elements Properties	Metric	English	Comments
Al2O3	>= 95 %	>= 95 %	a-Al2O3
CaO	0.020 %	0.020 %
Fe2O3	0.020 %	0.020 %
MgO	0.060 %	0.060 %
Na2O	<= 0.10 %	<= 0.10 %	total
SiO2	0.080 %	0.080 %

Descriptive Properties
Al(OH)₃ (%)	99.8
Functionality	Ultra Fine Particle Size
Functionality: Thermal resistance	Reactive binder
Market/Application: Industrial	Ceramics

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EHUBER817 / 300923

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