Abstract: A non-asbestos-based friction material for rotors and brake drums of aluminum alloy for automobiles or the like, which exhibits lower counter surface attack and excellent wear resistance, produced by forming and then curing a non-asbestos-based friction material composition comprising a fibrous base (A), binder (B) and filler (C) as the major ingredients, wherein the filler (C) is incorporated with 1 to 10% of abrasive particles having an average size of 0.5 to 10 &mgr;m and 4 to 20% of unvulcanized rubber, all percentages by volume based on the whole friction material.

Abstract: A non-asbestos friction material is obtained by molding and curing a composition comprising a fibrous base other than asbestos, a binder and a filler. The fibrous base is composed in part of 1-15 vol % of inorganic fibers having a Mohs hardness of less than 4.5 and the filler includes 0.5-15 vol % of cashew dust, based on the overall composition. The friction material undergoes little wear during high-speed braking, has an excellent heat resistance, stable braking effectiveness and good strength, and generates little undesirable brake noise, especially when used as brake linings in drum brakes.