All-purpose master alloy for 585-750‰ (14-18 Kt) red gold

OR133 is a master alloy for 585-750‰ (14-18 Kt) pink gold jewelry, designed as an all-purpose formulation.
OR133 is suitable for lost-wax casting in closed systems. The alloy can also be used for continuous casting and for ingot casting of semi-finished items such as sheet, wire and tube.
The main mechanical deformation processes in which OR133 can be used are stamping, blanking, wire making, CNC and lathe production.
Although conceived for title 750‰, the alloy is suitable also in title 585‰.
The color of 750‰ pink gold made using OR133 complies with the 5N color definition according to the UNI EN 28654 standard.
OR133 offers a very high level of grain refinement, useful to avoid brittleness problems, which are common in traditional 750‰ red gold alloys.
The hardness of 750‰ gold alloyed with OR133 can be greatly increased by means of a heat treatment. The alloy is not suitable for age-hardening in lower titles.
OR133 has high shininess and extremely compact surface after finishing.