What precision instruments can be made from pure iron?

Electromagnetic valve core: In electromagnetic valves that require linear control, pure iron is used as the core material due to its high permeability and low hysteresis phenomenon. A pure iron core can achieve more precise electrical control of oil pressure and improve the performance of solenoid valves.
Optical instrument components: The stability and processing performance of pure iron make it an ideal material for manufacturing key components of optical instruments. These components require high-precision machining and stable performance to ensure the accuracy and reliability of optical instruments.
Measuring instrument components: Pure iron is also commonly used to manufacture key components of measuring instruments, such as precision measuring tools, sensors, etc. These components need to have high precision and stability to ensure the accuracy of measurement results.