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M55 / block / grit / powder
SEPPE
SEPPE Sintered Mullite M55 is a grey to dark grey cost-performance high wear resistant mullite raw material for refractory castables, moulding, foundry and casting applications. It combines 55.81% Al2O3 with 4.57% Fe2O3, controlled silica and titanium oxide, supporting dense sintered structure, stable physical properties and reliable service performance where low-iron color control is not the priority.
M55 is designed for applications where wear resistance, dense structure and cost-performance balance are important. Its Fe2O3 value is higher than the low-iron M45, M60 and M70 grades, so M55 is better presented as a practical wear resistant grade rather than a low-iron or high-purity grade. The material is supplied in grey or dark grey block, grit and powder forms, giving buyers flexibility for castable formulation, moulding, foundry and casting systems.
According to the SEPPE M55 data sheet, the product has 2.60 g/cm3 bulk density, 0.48% water absorption and 1.24% apparent porosity. The report also records linear change of 0.14 at 1450C and -0.08 after reheating at 1500C following 1400C.
Particle size distribution can be discussed according to castable formulation, moulding process, foundry use or casting requirements.
? What makes M55 different from a regular alumina-silica raw material?
M55 is positioned as a cost-performance high wear resistant mullite with grey to dark grey appearance, higher Fe2O3 chemistry, dense structure and documented physical property values.
? Can SEPPE provide M55 TDS and report files?
Yes. M55 TDS and supporting report links can be provided for technical confirmation and customer review.
? Which forms are available?
According to the M55 TDS, the material appearance includes block, grit and powder. Specific particle size distribution can be discussed by application.
