| Designation | LPB 2 | LPB 4 | LB 1 | LB 5 | |||||
| Material | Leaded Bronze | Leaded Bronze | Leaded Bronze | Leaded Bronze | |||||
| Elements | Min | Max | Min | Max | Min | Max | Min | Max | |
| % | % | % | % | % | % | % | % | ||
| Copper | Remainder | Remainder | Remainder | Remainder | |||||
| Tin | 9.2 | 11.0 |
4.2 |
6.0 | 8.0 | 10.0 | 4.0 | 6.0 | |
| Zinc | - | 1.0 | - | 2.0 | - | 1.0 | - | 1.0 | |
| Lead | 9.0 | 10.5 | 8.5 | 10.0 | 13.5 | 16.5 | 19.0 | 23.0 | |
| Phosphorous | - | 0.05 | - | 0.05 | - | 0.1 | - | 0.10 | |
| Nickel | - | 2.0 | - | 2.0 | - | 2.0 | - | 2.0 | |
| Iron | - | 0.15 | - | 0.15 | - | - | - | 0.15 | |
| Aluminium | - | 0.01 | - | 0.01 | - | - | - | 0.01 | |
| Manganese | - | 0.2 | - | 0.2 | - | - | - | 0.2 | |
| Antimony | - | 0.5 | - | 0.5 | - | 0.5 | - | 0.50 | |
| Arsenic | - | - | - | - | - | - | - | - | |
| iron-arsenic + antimony | - | - | - | - | - | - | - | - | |
| - | |||||||||
| Silicon | - | 0.02 | - | 0.02 | - | - | - | 0.01 | |
| Bismuth | - | - | - | - | - | - | - | - | |
| Sulphur | - | 0.1 | - | 0.1 | - | 0.1 | - | 0.1 | |
| Total Impurities | - | 0.50 | - | 0.50 | - | 0.30 | - | 0.30 | |