The Development of a Novel Gold Alloy with 995 Fineness and Increased Hardness

@article{Toit2002TheDO,
  title={The Development of a Novel Gold Alloy with 995 Fineness and Increased Hardness},
  author={Madeleine du Toit and Elma van der Lingen and Lizelle Glaner and Rainer S{\"u}ss},
  journal={Gold Bulletin},
  year={2002},
  volume={35},
  pages={46-52}
}
The mechanical properties and processing of a newly developed ternary Au-Sb-Co alloy with 995 fineness are discussed. The high gold content of this alloy (99.5 per cent) facilitates marking as 24 carat gold (orChuk Kam) in many countries. The alloy has a rich yellow colour, virtually identical to that of pure gold, and can be hardened to a peak hardness of 130 to 140 points on the Vickers hardness scale using a combination of cold work and a low temperature (250 to 300°C) ageing heat treatment… CONTINUE READING