BH GSO ISO 14627:2017 Fine ceramics (advanced ceramics, advanced technical ceramics) -- Test method for fracture resistance of silicon nitride materials for rolling bearing balls at room temperature by indentation fracture (IF) method
1970BH GSO ISO 14627:2017 Fine ceramics (advanced ceramics, advanced technical ceramics) -- Test method for fracture resistance of silicon nitride materials for rolling bearing balls at room temperature by indentation fracture (IF) method