Braking systems create kinetic energy.  The kinetic or sliding friction is the friction that applies to objects that are in motion.  The coefficient of kinetic friction is the force between two objects when one object is moving, or if two objects are moving against each other.  The coefficient of friction depends on the materials used.  As an example; two pieces of ice slide against each other and produce an extremely low coefficient of friction.  If you take two pieces of concrete and slide them against each other it will create a high coefficient of friction.  Performance tires on pavement may have a coefficient of friction of 1.7.  Brake pad coefficients are generally between 0.2 and 0.7.  Glued or welded together surfaces have infinite friction coefficients.

However, there is no set standard of testing to find a brake pad compound coefficient of friction.  Based on how the test is performed can show different numbers for the same compound.  Some of our competitors show their coefficient of friction numbers but they perform their tests differently than another company.   Because of this we do not publish any of our coefficient of friction numbers because we feel it’s misleading.