Hayes Metals also manufacture alloys to customer specifications including:
BS1400:1985
(maximum % unless otherwise listed)
| Cu | Remainder |
| Sn | 4.0 - 6.0 |
| Zn | 1.0 |
| Pb | 19.0 - 23.0 |
| P* | 0.10 |
| Ni | 2.0 |
| Fe* | 0.15 |
| Al* | 0.01 |
| Mn* | 0.2 |
| Sb | 0.50 |
| Si* | 0.01 |
| S* | 0.1 |
| T-I | 0.30 |
T-I Total Impurities
Elements marked with * are specified impurities
| Tensile Strength (MPa) | 160-190 |
| Elongation (% min) | 5-10 |
| 0.2% Proof Stress (MPa) | 60-100 |
| Hardness (HB) | 45-65 |