Compressive Strength Of Ceramic S

Ceramics have compressive strengths about ten times higher than their tensile strength.

Compressive strength of ceramic s.

Alumina for example has a tensile strength of 20 000 psi 1138 mpa while the compressive strength is 350 000 psi 2400 mpa. Ceramic materials offer a number of benefits in a variety of applications. The tensile strength of ceramics and glasses is low because the existing flaws internal or surface cracks act as stress concentrators. 4 2 generally resistance to compression is the measure of the greatest strength of a monolithic advanced ceramic.

Usually ceramic strength is tested using a four point bend test. They provide high wear heat and corrosion resistance as well as high tensile strength volume resistivity dielectric strength and modulus of elasticity. Material specific gravity sg coefficient of linear expansion α m m k maximum safe operating temperature o c. Properties of some common ceramics.

Ideally ceramics should be compressively stressed in use although engineering applications may frequently introduce tensile stresses in the component. For a metal the compressive strength is near that of the tensile strength while for a ceramic the compressive strength may be 10 times the tensile strength.