FRICTION MATERIAL

摘要

A friction material (1) comprising a flame sprayed metal film (4) in an amount of 10 mg/cm2 which is formed on at least whole range of outer peripheral side of an annular friction surface (3) provided at center with large diameter hole (2), of which radial length (B) is one-third of radial length (A) from outer periphery of said friction surface (3) to said large diameter hole (2).