Patent ID: 8829103

Claim:
A composite material comprising: carbon fibers having an average fiber length of more than about 10 mm and about 100 mm or less; and a thermoplastic resin, wherein the carbon fibers are substantially two-dimensionally-randomly oriented in the composite material, wherein the composite material comprises a carbon fiber bundle (A) in a ratio of more than 0 volume % and less than about 30 volume % to a total volume of the carbon fibers, the carbon fiber bundle (A) including the carbon fibers of a critical single fiber number defined by formula (1) or more, and wherein an average number (N) of the carbon fibers in the carbon fiber bundle (A) satisfies formula (2), Critical single fiber number =600/ D (1) 1.0×10 4 /D 2 <N< 2.5×10 4 /D 2 (2) wherein D is an average fiber diameter (μm) of the carbon fibers.