White Fused Alumina
White fused alumina is the specialty grade among the aluminas: iron-free aluminium oxide of high purity, produced by Kuhmichel Abrasiv. On pallets there are 33 items to choose from.
Material and technical data
Chemically, white fused alumina is almost pure Al₂O₃. Hardness is 9 mohs, the grain is angular, the melting point around 2,050 °C. Specific gravity is 3.9 to 4.1 g/cm³, bulk density 0.8 to 2.1 g/cm³ depending on grain size. What sets it apart is not hardness — it shares that with brown fused alumina — but freedom from iron and a high degree of whiteness.
Grain sizes and applications
Grain sizes run from coarse qualities down to the 3 µm range. The material is needed wherever foreign rust on the part must be ruled out: medical technology, aerospace, the optical industry. Beyond blasting it serves as a loose abrasive, in bonded abrasives, in refractory products and as a wet blasting medium.
Why the pallet
The 1,000 kg pallet pays off for white fused alumina when a series runs permanently — in medical technology or aerospace supply, say, where the same grade is always required. For changing tasks the bag is the more suitable unit. All grades on pallets are under palletised goods.
What matters when choosing
White fused alumina costs more than the brown grade and does not remove more material. It pays off precisely when iron in the medium would become a problem — on stainless steel, on titanium and anywhere the part must not rust afterwards. For anything else it is the wrong choice.
Alternatives in the range
Where freedom from iron does not matter, Brown Fused Alumina and Brown Fused Alumina FeSi are the cheaper working grades. If more hardness is needed, the path leads to Silicon Carbide. The blasting media programme gives an overview of every grade.
Your advantage when buying from us
- All common blasting media from stock – mineral, metallic, glass, ceramic and organic
- We ship worldwide
- Fast delivery with UPS (parcel) or DSV (pallets) – express shipping also available
- We are happy to advise on medium type, grain size, consumption and packaging
- Dealer? Send your dealer enquiry straight to us – discounts depending on volume
- Large company or public authority? Order on account – simply ask
