The strength and hardness of PlatinGold are signifi-cantly higher than with most well-known platinum alloys. In spite of this, its malleability is exceptionally good. Even after a considerable amount of shaping, it still retains a notable degree of malleability. And the material suffers from none of the deleterious hardening effects after heat treatment. This particular characteristic makes the alloy ideal for a universal range of applications.
In particular, intricate designs and filigree settings made from PlatinGold are very robust and show no signs whatsoever of brittleness. This ensures that stones always remain firmly seated in their settings. And PlatinGold fully lives up to the jewellery and watch making industry’s stringent requirements in terms of scratch and wear resistance.
Properties | PtCuGa | PtCo | PtAu | Remarks |
---|---|---|---|---|
Hardness (HV) cast/soft | 175/160 | 140/135 | 170/165 | PtAu has optimum basic hardness |
Hardness (HV) 70 % cold formed | 235 | 230 | 270 | PtAu sets harder than other Pt alloys |
Age hardening | yes | no | no | PtAu shows no undesirable hardening |
Tensile strength (MPa) soft | 430 | 400 | 500 | The strength of PtAu is excellent |
Elongation (%) soft | > 15 | > 20 | > 30 | PtAu still has a notable elongation of > 5 % even after 70 % cold forming |