Sunrock produces specialized formulations for unique applications, including mullite (HPA-70), fused silica (FS-90), and high-purity alumina insulating bricks for reducing atmosphere furnaces (B-99).
HPA-70 Mullite Kiln Furniture
HPA-70 is a mullite (approximately 70% alumina) kiln furniture material designed for excellent thermal shock resistance and good hot strength up to 1450°C.
HPA-70 is recommended in applications where the temperatures and/or chemical interactions preclude the use of lower temperature ceramic materials such as cordierite or fused silica but are not severe enough for high alumina (i.e., +90% alumina).
The Numerous Advantages of
Sunrock's Specialized Formulations
Whether you're looking for a material for rapid cycle kiln furniture applications or need an insulating material for the lining and insulation of reducing atmosphere furnaces, Sunrock Ceramics has the material you need. We have deep experience in navigating the inherent trade-offs in the design of kiln furniture systems.