Valve Guides are made from two kinds of material

        1)   Grey Cast Iron

             2)   CuZnAl-alloy

GREY CAST IRON of perlitic structure with high phosphorous content. The perlitic structure and the reticular phosphide distribution along with the good graphite formation give high wear resistance and improved running properties in poor lubrication condition.
 

CuZnAl-alloy  Guides are with excellent wear resistance and low coefficient of friction. Used for highest stressed guides.  

All our Cast Iron Guides are manufactured having minimum hardness of 93 HRB (200 BHN).