... cost will than copper alloy reduce 50000-60,000 yuan4..The proportion of zn-base 4ear resistant alloy for 5, while the ... proportion of copper alloys, compared to 890,000 save 1 ... .The price of zn-base 4ear resistant alloy for 38000 yuan/ton, copper alloy price for 68000 dollars, save 30,000 yuan6.Wear ...