Tolerances for Dimensions and Shapes
Technical ceramics make use of different
standards. DIN 40 680 specifies dimensional and shape tolerances
for components that are to be used "as fired",
i.e. without any additional processing after
firing. The precision required depends on the manufacturing
technique and the material.
DIN ISO 2768 and DIN ISO 1101 specify tolerances for components
that will require additional hard machining,
such as grinding, after firing in order to achieve the precision
necessary for machine construction.