Physical Properties

The refractory materials commonly characterized by their physical properties.

Melting Point:

Melting temperatures (melting points) specify the ability of materials to withstand high temperatures without chemical change and physical destruction. The melting point of few elements that constitute refractory composition in the pure state varies from 3100°– 6300°F

Porosity

It is defined as the ratio of its pores volume to its total volume. Porosity is an important property of refractories because it affects many other features such as resistance to abrasion, thermal conductivity. In general, a good refractory must have low porosity. Here are some advantages and disadvantages of high porosity.

Bulk density
It is a general indication of product quality. The ratio of weight to the volume; measured in g/cm3.