Carbon Tool Steel Cold Rolled Steel Strip Used for Watches (YB/T5061 - 1993)
Carbon tool steel cold rolled steel strip (CTS CRSS) is a type of steel strip commonly used for producing various kinds of watch movements. The material is mainly used for individual watch movement components, such as bridges, wheels and escapements. The material of this steel strip is specified in the industrial standard YB/T5061 - 1993.
CTS CRSS is a low-carbon high-manganese steel, with composition of 0.50% - 0.55% C, 0.85% - 1.60% Mn, 0.30% - 1.00% Si and other contaminations. It has good cutting performance, high strength and wear resistance, and excellent fatigue properties, making it particularly suitable for manufacturing precision parts requiring small precision cutting and shaping.
The production of CTS CRSS involves a series of processes, such as hot rolling, cold rolling, annealing and so on. During the hot rolling process, the ingot is heated to a temperature of about 900 ° C, and then pressed and deformed into the required finished shape. This process is called cold rolling and it is used to deform the metal into thin sheets. After cold rolling, the material is annealed, which is a process by which the metal is heated to a high temperature and then cooled slowly to enhance its mechanical properties.
The standard dictates that the steel must be 0.1mm - 0.3mm thick, and that the width should be 0.7mm-4.0mm. The mechanical properties of the steel should be greater than 800 N/mm2, and all of its impurities should be strictly controlled to reach the international standard.
CTS CRSS has become a favorite material for watchmakers because of its excellent properties, such as high strength and wear resistance, dimensional stability, and good fatigue properties. It is the best material to use for producing precision watch components, as it helps to ensure greater accuracy in the machined parts. Moreover, it is relatively inexpensive, which makes it even more attractive for watchmakers.
In summary, CTS CRSS is an ideal material for making precision watch components. It has excellent properties and is quite affordable, making it an ideal choice for watchmakers. The steel is produced to the strict requirements of the YB/T5061 – 1993 standard, ensuring that the components manufactured from this material are of the highest quality.
