ISO 14627:2012 describes a test method that covers the determination of fracture resistance of silicon nitride bearing balls at room temperature by the indentation fracture (IF) method, as specified in ISO 26602.
ISO 14627:2012 is intended for use with monolithic silicon nitride ceramics for bearing balls. It does not include other ceramic materials.
ISO 14627:2012 is for material comparison and quality assurance.