| Chemical Composition of Group A Copper Alloy Ingots and Billets - BS 1400 1973 | ||||||||
|---|---|---|---|---|---|---|---|---|
| Name BS |
PB - 04 Phosphors bronze |
LPB1 Leaded Phosphors Bronze |
LG2 85/5/5/5 Leaded Gun Metal |
LG4 87/7/3/3 Leaded Gun Metal |
||||
| Elements | Min | Max | Min | Max | Min | Max | Min | Max |
| Copper | Rem | - | Rem | - | Rem | - | Rem | - |
| Tin | 9.7 | - | 6.5 | 8.5 | 4.0 | 6.0 | 6.0 | 8.0 |
| Zinc | - | 0.5 | - | 2.0 | 4.5 | 6.0 | 1.7 | 3.2 |
| Lead | - | 0.75 | 2.0 | 5.0 | 4.0 | 6.0 | 2.7 | 3.5 |
| Phosphorous | 0.5 | - | 0.4 | - | - | 0.02 | - | 0.02 |
| Nickel | - | 0.5 | - | 1.0 | - | 2.0 | - | 2.0 |
| Iron | - | - | - | 0.2 | - | 0.2 | - | 0.2 |
| Aluminium | - | - | - | - | - | - | - | - |
| Manganese | - | - | - | - | - | - | - | - |
| Antimony | - | - | - | 0.2 | - | 0.2 | - | 0.2 |
| Arsenic | - | - | - | - | - | 0.2 | - | 0.15 |
| Silicon | - | - | - | - | - | - | - | - |
| Bismuth | - | - | - | - | - | - | - | - |
| Magnesium | - | - | - | - | - | - | - | - |
| Sulphur Nicbium | - | - | - | - | - | - | - | - |
| Impurities | - | 0.50 | - | 0.50 | - | 0.80 | - | 0.70 |