Patent ID: 8398739

Claim:
An iron-based powder composition comprising a water atomised prealloyed iron-based steel powder which comprises by weight-%: 0.1-0.6 Cr, 0.05-0.2 V, 0.2-0.6 Mn, less than 0.1 Mo, less than 0.1 Ni, less than 0.2 Cu, less than 0.1 C, less than 0.25 O, less than 0.5 of unavoidable impurities, and the balance being iron, mixed with 0.35-1% by weight of the composition of graphite, 0.05-2% by weight of the composition of lubricants, copper in an amount of 2-4% by weight of the composition and optionally hard phase materials and machinability enhancing agents.