This Gulf standard specifies a method for measuring the internal shear strength (stress) of brake lining materials. It applies to friction materials for disc pads and drum brake linings to be used on road vehicle brakes
GSO ISO 6311:2005 history
2005GSO ISO 6311:2005 MOTOR VEHICLES METHODS OF TESTING BRAKE LININGS – PART 1: INTERNAL SHEAR STRENGTH OF LINING MATERIAL