BALANCE FOR TIMEPIECE AND METHOD FOR MANUFACTURING SUCH A BALANCE

The invention relates to a balance (1) for a timepiece comprising a felloe (2), a hub (4) and at least one arm (8) connecting the hub (4) to said felloe (2), at least one portion of the balance (1) being made of an at least partially amorphous metal alloy, characterised in that said at least partially amorphous metal alloy is based on an element chosen from the group that comprises platinum, zirconium and titanium, and has a thermal expansion coefficient of 7 ppm/ DEG C to 12 ppm/ DEG C. The present invention also relates to a method for manufacturing such a balance by moulding as well as to aresonator comprising such a balance and a monocrystalline quartz hairspring. 本发明涉及一种用于钟表的摆轮(1)，其包括轮缘(2)、轮毂(4)和将轮毂(4)连接到轮缘(2)的至少一个臂(8)，摆轮(1)的至少一部分由至少部分非晶态金属合金制成，其特征在于，所述至少部分非晶态金属合金是基于选自铂、锆和钛的元素，并且热膨胀系数为7-12ppm/℃。本发明还涉及用于通过模制来制造这种摆轮的方法，以及包含这种摆轮和单晶石英游丝的谐振器。