GBCuZn37Al1 GB-CuZn34Al2 GB-CuZn25Al5 GB-CuZn15Si4 GB-CuAl10Fe GB-CuAl9Ni GB-CuAl10Ni GB-CuAl11Ni GB-CuAl8Mn GB-CuPb5Sn GB-CuPb10Sn GB-CuPb15Sn GB-CuPb20Sn 2.1053 2.1063 2.1065 2.1051 2.1087 2.1091 2.1095 2.1097 2.1099 2.0291 2.0383 2.0342 2.0601 2.0600 2.0605 2.0606 2.0608 2.0493 2.0602 2.0941 2.0972