脱氧铝块表面应光洁无飞边、夹渣和严重气孔；规格、外型、重量根据客户要求。牌号AL不小于化学成份%杂质不大于FeSiCuCaMgZn其它总和AL99.6099.600.250.180.010.030.030.010.020.40AL99.5099.500.300.250.150.050.050.050.020.50AL99.0099.000.500.450.220.050.050.050.051.00AL95.0095.003.002.000.500.100.100.100.055.00)