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PBN Crucibles for Precision Application

Pyrolytic Boron Nitride Crucible can withstand high temperatures in a high vacuum environment. It has excellent thermal conductivity, corrosion resistance, and electrical resistance.

AC2469 Alumina Foam Brick, Aluminum Oxide Foam Brick

Catalog No. AC2469
Material Cordierite, Mullite, Corundum, Zirconia
Number of Cells / inch2 60-400
Micro Cell 2-3 μm

Datasheet

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AC2469 Alumina Foam Brick, Aluminum Oxide Foam Brick

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Alumina Foam Brick Description

Alumina foam brick has excellent resistance to corrosion and corrosion of molten aluminum, so it can effectively remove inclusions. Due to its lightweight and low thermal conductivity, the foamed alumina has less accumulated heat energy and an obvious energy-saving effect. The precise appearance dimensions of alumina filter bricks can speed up the masonry speed and ensure high strength and stability of the masonry.

Alumina Foam Brick Advantages

Alumina foam bricks have the following advantages:

- Higher strength than refractory ceramic fiber and a lightweight ceramic brick.
- Low density
- Low thermal conductivity and linear thermal expansion coefficient.
- Great thermal shock resistance.
- Safe and rapid maintenance.

Alumina Foam Brick Specifications

Item	SAMCFI-C1	SAMCFI-C2	SAMCFI-C3	SAMCFI-C4	SAMCFI-C5
Bulk density/g·cm	0.8	1	1.2	1.4	1.6
Al2O3 content/%	≥99.6	≥99.6	≥99.6	≥99.6	≥99.6
Impurity %	≤0.1	≤0.1	≤0.1	≤0.1	≤0.1
Compressive Strength (Mpa)	≥30	≥65	≥72	≥97	≥135
Reburning line change rate(1800°C×12h)%	≤0.45	≤0.4	≤0.35	≤0.35	≤0.3
Heat conductivity coefficient W/(m.k)	0.85	0.9	0.9	0.95	1.2
Mean temperature 1100±25°C	0.85	0.9	0.9	0.95	1.2
Working temperature/°C	1800	1800	1800	1800	1800
Max. temperature/°C	1850	1850	1850	1850	1850

Alumina Foam Brick Applications

Alumina ceramic foam brick can be used as the heat-insulating layer of the refractory lining on the hot side, especially in the high-temperature reducing atmosphere furnace (1850 °C). It can be used for a long time under 1800 °C air and reducing atmosphere.