The Mohs Hardness of Porcelain constant displays the value of the Mohs hardness for porcelain (7 Mohs).
The Mohs hardness test is a measure of the resistance of a smooth surface to scratching or abrasion developed in 1812 by Friedrich Mohs. Mohs hardness is one of several definitions of hardness for materials science.
The Mohs hardness of porcelain is 7 Mohs.
Material Properties (https://material-properties.org/porcelain-density-heat-capacity-thermal-conductivity/)