VALVE SEAT MATERIAL FOR AN INTERNAL COMBUSTION ENGINE

摘要

TITLE OF THE INVENTION A valve seat material for an internal combustion engine The present invention relates to a valve seat material for an internal combustion engine, which comprises a sintered ferrous alloy having the composition by weight: 3-15 % molybdenum, 2-12 % cobalt, 0.1-200 % carbon, optionally 0-15 % lead and 0-8 % glass and the remainder being iron except fox usual impurities and trace elements. In cases There it is desirable to raise the self-lubricating property further, in particular, 0.5-10 % tungsten or 0.5-10 % tungsten and 0.5-8 % nickel can, in addition, be incorporated is the matrix.