Ceramics tend to be weak in tension but strong in compression.
Compressive strength of ceramic s.
They provide high wear heat and corrosion resistance as well as high tensile strength volume resistivity dielectric strength and modulus of elasticity.
Ideally ceramics should be compressively stressed in use although engineering applications may frequently introduce tensile stresses in the component.
Usually ceramic strength is tested using a four point bend test.
Material specific gravity sg coefficient of linear expansion α m m k maximum safe operating temperature o c.
Ceramics have compressive strengths about ten times higher than their tensile strength.
The properties and the processing of ceramics are largely affected by their grain sizes and shapes and characteristics such as density hardness mechanical strength and optical properties strongly correlate with the microstructure of the sintered piece.
4 2 generally resistance to compression is the measure of the greatest strength of a monolithic advanced ceramic.
Alumina for example has a tensile strength of 20 000 psi 1138 mpa while the compressive strength is 350 000 psi 2400 mpa.
Properties of some common ceramics.
Ceramic materials offer a number of benefits in a variety of applications.