Hayes Metals also manufacture alloys to customer specifications including:
BS1400:1985
(maximum % unless otherwise listed)
| Cu | Remainder |
| Sn | 9.7 - 10.5 |
| Zn | 1.75 - 2.75 |
| Pb | 1.5 |
| P | 0.02 |
| Ni | 1.0 |
| Fe* | 0.15 |
| Al* | 0.01 |
| Si* | 0.02 |
| Bi* | 0.03 |
| S* | 0.1 |
| Fe + As + Sb* 0.20 | |
| T-I | 0.50 |
T-I Total Impurities
Elements marked with * are specified impurities
| Tensile Strength (MPa) | 270-340 |
| Elongation (% min) | 13-25 |
| 0.2% Proof Stress (MPa) | 130-160 |
| Hardness (HB) | 70-95 |