ZA43 wear resistant zinc based cast alloy related in the paper belongs to a substitute matetial for Snbronze. The most remarkable chaxacter-istics of the alloy are that the zinc substitutes for copper and that the alloy is fcee fcom the rare and expensive Sn. Foe the addition of a great quantity of Al and other elements

the alloy has not only a little density

but also a good machanical. physical and processing properties. Resonable structures improve the weaxability of the alloy qreatly. The alloy is suitable for making wear resistant parts such as bush

axle sleeve and worm wheel etc. undor the conditions of high and middle load at the middle and low speed. The cast of the alloy is only a half of the Sn beonze.