To eliminate large vibration under a high load condition, the easy occurrence of squeaking during braking, the deterioration of fade resistance, wear resistance and a friction factor and to increase the wearing amount of an opposite material.

In a sintered friction material manufacture for making a friction material by mixing, forming and sintering a raw material composed of a matrix forming material made of metal and/or alloy and a filler forming material mainly made of an inorganic material eliminating the matrix forming material, the filler forming material includes flake graphite in which a ratio between the thickness of a layer direction (indicated by 't') and the length of a longitudinal direction (indicated by 'h') is equal to or over 10 (h/t≥10), and the amount of ashes included in the flake graphite is 1wt.% or lower against the flake graphite.