| Main Grade | Sub Grades |
|---|---|
| Aluminium Bronze | AB-1 AB-2 |
| Phosphorus Bronze | PB-1 PB-2 |
| Gun Metal | LG-2 LG-3 |
| Leaded Tin Bronze | LTB-1 LTB-2 LTB-3 LTB-4 LTB-5 LTB-6 |
| Silicon Bronze | SB-1 SB-2 |
| Brass | High Tensile Brass Silicone Brass Aluminium Brass Free Cutting Brass Naval Brass |