Patent ID: 8257462
Filing Date: 2012-09-04
Classification: B22F,C22C,F01L

Abstract:
1. A powder metal material comprising: pre-alloyed iron-based powder including carbon present in an amount of about 0.25 to about 1.50% by weight of said pre-alloyed iron-based powder, said pre-alloyed iron-based powder including a pearlitic structure, admixed graphite present in an amount of about 0.25 to about 1.50% by weight of said powder metal material, wherein said admixed graphite consists of particles having a U.S. standard sieve designation finer than 200 mesh present in an amount greater than about 90.0% by weight of said admixed graphite, admixed molybdenum disulfide present in an amount of about 0.1 to about 4.0% by weight of said powder metal material, admixed copper present in an amount of about 1.0 to about 5.0% by weight of said powder metal material, and said powder metal material being free of phosphorous.