This standard specifies the test method for determining the Rockwell hardness of friction materials. This standard applies to dry friction material products; it does not apply to powder metallurgy friction material products.
GB/T 5766-1996 history
2023GB/T 5766-2023 Rockwell hardness test method for friction materials
2007GB/T 5766-2007 Test method of Rockwell hardness for friction materials
1996GB/T 5766-1996 Test method of Rockwell hardness for friction materials