| Chemical composition | Mass fraction (%) | Standard mass fraction (%) |
| Al | 94.5000 | 92.555~94.115 |
| Zn | 5.3100 | 5.500~7.000 |
| In | 0.0265 | 0.025~0.035 |
| Si | 0.0872 | <0.100 |
| Fe | 0.0467 | <0.150 |
| Ca | 0.0107 | <0.100 |
| Other | 0.0189 | <1.500 |