A friction material includes a resin and a fibrous base material impregnated with the resin. The fibrous base material has a single ply, and includes a plurality of aramid fibers present in a first amount, a plurality of polyacrylonitrile-based carbon fibers present in a second amount that is less than the first amount, and diatomaceous earth present in a third amount that is greater than the first amount. The fibrous base material is substantially free from activated carbon. A friction member for operatively contacting a lubricated surface includes a substrate and a friction material. The friction material defines a first surface bonded to the substrate and a second surface configured for operatively contacting the lubricated surface.