铜 5850/5900 b 65/85 b
锡 16925/17125 b 15/20 b
铅 1710/1730 c 20.5/15.5 c
锌 1580/1600 c 17.0/11.0 c
铝 2330/2340 c 46.3/41.3 c
镍 15250/15550 c 240/210 c