主要参考成分如下：常用国外代号 牌号 Zn Al Cu Mg Fe PbSnCd Ni 3#YzzAl4A基体3.9-4.3≤0.10.03-0.060.0350.0040.00150.003  3#YzzAl4B基体3.9-4.3≤0.10.01-0.020.0750.0030.0010.0020.02-0.05 5#YzzAl4Cul基体3.9-4.30.7-1.10.03-0.060.0350.0040.00150.003  2#YzzAl4Cu3基体3.9-4.32.7-3.30.025-0.050.0350.0040.00150.003  ZA8YzzAl8Cul基体8.2-8.80.9-1.30.02-0.030.0350.0050.0050.002  ZA12YzzAl11Cul基体10.8-11.50.5-1.20.02-0.030.050.0050.0050.002  ZA27YzzAl27Cu2基体25.5-28.02.0-2.50.012-0.020.070.0050.0050.002