Aluminum Titanate Ceramic (Al₂TiO₅) for Molten Aluminum Casting

Aluminum titanate has very low wettability and low chemical reactivity with molten aluminum, which helps minimise metal build-up and inclusion formation for cleaner metal flow compared with many traditional refractories. Behaviour still depends on alloy and surface condition.

Machined aluminum titanate components generally reach about ±0.05-2.0 mm depending on bore depth, wall thickness and shape complexity. Critical sealing surfaces can be processed to tighter values, confirmed per drawing and engineering review.

Yes. Riser tubes, stalk tubes, dosing tubes, pouring cups and sprue bushings can be made to drawings, CAD files or samples, including stepped geometries, flanges, transitions and special interfaces matched to your LPDC or casting-line layout.

Aluminum titanate combines very low thermal expansion, strong thermal-shock resistance and non-wetting behaviour, which makes it a widely used, cost-conscious choice for LPDC and molten-aluminum casting. Silicon nitride offers higher mechanical strength at higher cost, while fused silica is cheaper but less stable under repeated thermal cycling. The right choice depends on the part, load and process.

Yes. Al₂TiO₅ is valued for its thermal-shock resistance; its low thermal expansion lets it tolerate sudden heating and cooling with reduced cracking risk, which suits intermittent casting, start-stop LPDC/HPDC operation and repeated immersion in and withdrawal from molten aluminum. Limits still depend on design and mounting.

They can tolerate moderate vibration in normal casting operation thanks to a low elastic modulus and thermal-stress damping, but they are not designed for high-impact loads, strong mechanical shock or continuous side loading. Good axial alignment, support fixtures and careful installation help maintain service life.

Common factors include thermal shock beyond design limits, incorrect mounting, mechanical overload, and metal infiltration from poor alloy cleanliness or temperature spikes. Long dwell in the roughly 1000-1300°C decomposition range can also degrade the material, so thermal cycle and formulation should be reviewed.

No. Once cracked, aluminum titanate parts cannot be structurally repaired. Replacement is recommended to keep process stability and casting quality, and reviewing the failure mode helps select a better grade or geometry for the next part.

Quality producers control density, porosity, phase composition and shrinkage, which supports predictable expansion behaviour and low dimensional variation between batches. ADCERAX checks these per batch, with values confirmed by engineering rather than promised as fixed figures.

Please provide drawings or an old-part photo, key dimensions and tolerances, part type, equipment model, alloy, working temperature and expected cycle load. This lets ADCERAX select the right aluminum titanate grade and check the process route before quoting.

It depends on where the part sits in your system: riser and stalk tubes lift molten aluminum from the holding furnace into the die in LPDC; sprue bushings sit at the gating interface; pouring ladles and spouts handle melt transfer. Share the failing part or drawing and ADCERAX will route you to the right component.

Yes — aluminium titanate (British spelling), aluminum titanate (US spelling), Al₂TiO₅ and the mineral name tialite all refer to the same reaction ceramic of alumina and titania used for molten-aluminum casting parts.

Not usually. Aluminum titanate has relatively low mechanical strength (MOR roughly 10-50 MPa), so heavily loaded structural parts are better served by silicon nitride or zirconia. Its non-wetting advantage targets molten aluminum and non-ferrous metals rather than steel or cast iron, and it is not an insulation-wool material.

Aluminum titanate dosing tubes, feed pipes and stalk tubes for dosing furnaces and LPDC machines can be produced to drawing or sample. Share the furnace or machine model and the interface details and ADCERAX will review the geometry and route your enquiry.