Hayes Metals also manufacture alloys to customer specifications including:
BS1400:1985
(maximum % unless otherwise listed)
| Cu | Remainder |
| Sn | 9.7 min. |
| Zn | 0.5 |
| Pb | 0.75 |
| P | 0.5 min |
| Ni | 0.5 |
| S* | 0.1 |
| T-I | 0.50 |
T-I Total Impurities
Elements marked with * are specified impurities
| Tensile Strength (MPa) | 190-270 |
| Elongation (% min) | 3-12 |
| 0.2% Proof Stress (MPa) | 100-160 |
| Hardness (HB) | 70-95 |