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Raw Materials

Activated Carbon Textiles
Aluminium Fibers
Aluminium Hydroxide
Aluminium Nitride
Aluminium Oxide
Aluminium Titanate
Anti Corrosion Paints
Anti Noise Paints
Antimony Trisulfide
Bone Ash, white and black
Boron Carbide
Boron Nitride
Brass Powder, -Swarfs
Bricks, SILEX
Brown Fused Alumina
Calcium Hydroxide
Cellulose Fibers
Chromite, Chromium Ore
Chromium Oxide, green
Coconutshell Powder
Colemanite, Calcium Borate
Colour Pigments
Copper Fibers
Copper-Oxide (black)
DiCalcium Phosphate
Expandable Graphite
Gelatine, technical
Glues / Adhesives for Backplates
Graphite, natural & synthetic
Hydrated Lime
Hydrazine Hydrate
Iron Disulfide
Iron Oxide
Magnesium Carbonate (Magnesite)
Magnesium Chloride
Magnesium Ingots
Magnesium Oxide, -hydroxide
Melamine Resin
Mica Powder
Micaceous Iron Oxide
Molybdenum Pentachloride
Mould Release Agents
Nano Powders
Nitrile Butadiene Rubber (NBR)
Novoloid Fibers, brand name: Kynol®
Pebbles, SILEX
Phenolic Fibers (Kynol® Novoloid Fibers)
Phenolic Resins
Polyethylene Oxide
Polyethylene Wax, also oxidized
Potassium Titanate
Rubber Powder & Granules
Shot-blasting Beads
Silex Pebbles and Stones
Silicon Carbide
Silicon Nitride
Sintered Mullite
Sintering Bed Beads
Sodium Hexafluoroantimonate
Sodium Titanate
Steel Fibers, also stainless steel
Tin Ingots
TriCalcium Phosphate
Tungsten Alloys
Tungsten Chloride
Tungsten Disulfide
Tungsten Hexachloride
Tungsten Oxide
Tungsten Powder
White Fused Alumina
Wollastonite, also silanised
Zinc Phosphate
Zirconia Aluminium Oxide
Zirconia Grinding Beads
Zirconia Mullite
Zirconium Oxide and other compounds
Zirconium Silicate, Powder and Sand
Zirconium Tungstate

  Sintered Mullite
Our Synthetic Sintered Mullite is extremely even in quality, specially compared with fused mullites. It is used for all kinds of friction materials with great success already. For lv disc brake pads especially the grade K0 (0 - 0.1 mm) is used. For higher coefficient of friction, such as cv brake pads and blocks or sintered brake materials, the coarser grade K1 (0 - 0.5 mm) is mainly used.

Our customers report as follows:
  • Stabilizes the coefficent of friction μ,
  • Improves the thermo shock resistance,
  • Swelling of the friction material is reduced,
  • Improves performing in corrosive environment.
These advantages are mainly caused by the interlocked crystallites (in the μm range) of the mullite. The hardness is 6 - 7 Mohs. The quantity in the formulation can vary between 2 - 8 %, depending on the requested coefficent of friction. The melting temperature is >1850°C.

Due to the homogeneous phase constitution and a very low amount of impurities this quality offers considerable advantages compared with all other mullites.
The constant high quality of our Sintered Mullites is based on careful selection and quality control of all raw materials. After pelletising or briquette forming, the raw materials are sintered close to the melting temperature. A highly homogeneous temperature distribution during the sintering process leads to constant high Mullite forming rates.

For some more information you can already have a look at this datasheet (PDF, 540 KB). We would be pleased to send you even more information after receiving your inquiry.