Refractory Materials


Fused Mullite is produced by fusing high purity alumina and silica together in an electric arc furnace in the proper ratios. The resulting product is characterized by its dendritic (needle-like) shape and unique thermal properties. Fused Mullite has a low coefficient of thermal expansion which results in a product with excellent thermal shock resistance and resistance to deformation under load.

Fused Mullite is used for many applications including investment cast shell building, kiln furniture, glass contact refractories, and other applications requiring a high purity raw material with excellent thermal shock resistance and hot strength.

Al2O3% 70 – 73
Fe2O3% 0.30 max
TiO2% 1.80 max
CaO% 0.20 max
MgO% 0.55 max
Na2O% 0.20 max
K2O% 0.20 max


Properties DM70
B.D g/cm3 2.90min
Apparent Porosity% 2.0 max
Water Absorption% 0.8 max
Refractoriness oC 1,850 min
Mullite Phases% 90 min
At PENNEKAMP Middle East LLC, we are a leading provider of high-quality refractory products for businesses across a wide range of Refractory and Steel industries. With over 25 years of experience in the refractory industry, we have established ourselves as a reliable partner for companies looking for durable and cost-effective refractory solutions.

Download PDF

Conatct Us