We are offering graphite filled bronze bushes. Material : high tensile manganese bronze composition : cu= 60 ã¢ï¿½ï¿½ 68% al= 3-7.5% fe= 2-4% mn= 2.5-5% zn = balance. Hardness : 180-210 bhn load : 750 nmm2 pv value : 20 ncm2 details : it has a backing made of high tensilemore...