Hayes Metals also manufacture alloys to customer specifications including:
BS1400:1985
(maximum % unless otherwise listed)
| Cu | Remainder |
| Sn | 6.0 - 8.0 |
| Zn | 1.7 - 3.2 |
| Pb | 2.7 - 3.5 |
| P | 0.02 |
| Ni | 2.0 |
| Fe* | 0.2 |
| Al* | 0.01 |
| Sb* | 0.25 |
| As* | 0.15 |
| Si* | 0.01 |
| Bi* | 0.05 |
| S* | 0.1 |
| Fe + As + Sb 0.40 | |
| Sn + (0.5xNi) 7.0 - 8.0 | |
| T-I | 0.70 |
T-I Total Impurities
Elements marked with * are specified impurities
| Tensile Strength (MPa) | 250-320 |
| Elongation (% min) | 16-25 |
| 0.2% Proof Stress (MPa) | 130-140 |
| Hardness (HB) | 70-85 |