On the definition of refractory materials, countries are not the same.

According to international standards, refractories are defined as non-metallic materials and products whose chemical and physical properties allow them to be used at high temperatures (without excluding the inclusion of a certain proportion of metals).

The American standard defines refractory as a nonmetallic material that, based on its chemical and physical properties, can be used to make structures and devices exposed to temperatures higher than 1000F(538 c).

Japanese standard will stipulate refractory materials: can be used in the temperature of more than 1500℃ shaped refractory materials and the highest use of the temperature of more than 800℃ shaped refractory materials, refractory mud and refractory heat insulation bricks.

China's standard for refractory materials follows IS0 standard, which stipulates that refractory materials refer to non-metallic materials with physical and chemical properties suitable for use at high temperatures, but does not exclude certain products that can contain a certain amount of metal materials.

As can be seen from the definition of refractory materials in the three countries above, the connotation and extension of refractory materials are not the same. Some specify the temperature, some don't. And their provisions of the use of the temperature is very far apart, but they also have in common, that is resistant material must be able to withstand the temperature of its damage.

Therefore, refractories are defined according to the most basic requirements of the environment in which they are used. However, with the progress of science and technology, the requirements of modern refractories have far exceeded the basic requirements. What is refractory material, to understand the requirements of refractory material.

The use environment of refractories is very complex, and different use environment puts forward different requirements for it. Comprehensive analysis of the use of environmental requirements for resistant materials. As well as for each specific use requirements, have the corresponding use performance of the material and corresponding.