This leaflet contains the general conditions for tread brakes with composite brake blocks. It describes the required properties of the composite brake blocks, their coefficients of friction and geometry requirements, and furthermore the mechanical, physical and chemical features for both organic and sintered composite brake block linings.
The certification process for composite brake blocks including the test programs to be applied is explained. The conditions to be observed are listed. The validity duration of the certification is time-limited.
The composite brake blocks certified according to the requirements below are listed in the tables published on the UIC website.
The same applies to composite brake blocks which only meet the requirements below with restrictions.
Definitions, test methods and measurements to be performed complete the leaflet.