Excellent thermal-shock resistance and non-wetting to molten aluminium. Reaction-sintered Al₂TiO₅ removes the preheat step from non-ferrous casting.
Used for: dosing tubes · riser tubes (low-pressure die casting) · pouring nozzles · thimbles · retainer rings · launder linings
Anderman offers reaction-sintered aluminium titanate, a material most commonly specified for non-ferrous metal melting. It has also found applications in iron and steel, chemical and medical sectors. The majority of our supply to date is formed parts to non-ferrous cast houses and foundries.
Aluminium titanate offers high thermal-shock resistance, low thermal conductivity and exceptional non-wettability to most non-ferrous molten metals. Customers reference increased process reliability, reduced risk of metal freeze-offs, and improved production yields compared with alternative material options.
These properties are achieved by combining high-purity alumina and titania in a precision-controlled reaction-sintering process. This engineers a microporous microstructure that delivers longer service life and removes the need for any pre-heating — the part is exposed directly to molten metal without thermal damage.
Dosing tubes up to 200 mm diameter × 590 mm length, riser tubes for low-pressure die casting, spouts, retainer rings, pouring nozzles, and thimbles for billet casting — a technology advance over historically used fused-silica thimbles. Non-contamination of the melt improves product quality and plant efficiency.
| Grade | Purity | Max temp | Density | Hardness | Typical use | Find products |
|---|---|---|---|---|---|---|
| Reaction-sintered Al₂TiO₅ | High-purity formulation | 1600 °C | 3.1 | — | Non-ferrous melt handling — dosing tubes, riser tubes, thimbles, spouts | → Find products |
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It is non-wetting to molten aluminium, so the melt does not adhere or react with the part. Combined with very low thermal conductivity, this protects against freeze-offs and prevents melt contamination — the part stays clean and the metal stays where it should.
Aluminium titanate. It outlasts fused silica significantly, reduces inclusions in the billet and tolerates the same thermal cycling without the dimensional change historically seen as fused silica devitrifies. The technology shift is well underway across non-ferrous foundries.
The reaction-sintered microporous microstructure has a very low apparent thermal expansion. A part can be plunged from ambient directly into molten aluminium without cracking — eliminating preheat ovens, shortening cycle time and reducing operator exposure to high-temperature handling.
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