DT4C is an industrial pure iron grade, belonging to the electrical pure iron series in the Chinese national standard (GB/T 6980). It is renowned for its excellent soft magnetic properties, including low coercivity, high permeability, and low iron loss. It is a high-purity iron with extremely low carbon content and strictly controlled impurities, widely used in DT4C AC Relay Iron Cores requiring high-efficiency magnetic circuits and low hysteresis losses.
"DT" is an abbreviation of "Dian Gong Tie" (electrical iron), where "4" represents the pure iron type and "C" represents its magnetic performance grade, typically indicating superior magnetic properties (especially lower coercivity and higher permeability) compared to grades like DT4, DT4A, and DT4E.
Core Characteristics
Extremely Low Coercivity (Hc): This is the most prominent characteristic of DT4C for Grooved Core for AC Relay. Extremely low coercivity means the material is very easy to magnetize and demagnetize, with a very narrow hysteresis loop and minimal hysteresis loss. High saturation magnetic flux density (Bs): Approaching the theoretical value of pure iron (approximately 2.15 T), capable of handling high magnetic flux density.
High permeability (μ): Both initial and maximum permeability are high, effectively concentrating and conducting magnetic field lines, improving magnetic circuit efficiency.
Low iron loss: Primarily composed of extremely low hysteresis loss, with relatively low eddy current loss (which can be further reduced through lamination).
Good plasticity and machinability: The material is soft, facilitating cold working of the AC Relay Core and Copper Ring, including stamping, shearing, and bending.
Good weldability: Can be welded using conventional methods.
Sensitive to processing and heat treatment: Cold working and mechanical stress significantly degrade the magnetic properties of the AC Core for Industrial Relay (increasing coercivity and decreasing permeability). Therefore, stress-relief annealing is necessary before final use.
Main Application Areas
High-precision electromagnetic components: AC Core Riveted with Copper Terminal, solenoid valve cores, magnetrons, traveling wave tubes, etc.
High-sensitivity sensors: magnetic conductors for various magnetic sensors.
Audio equipment: magnetic conductors (T-iron, magnetic pillars) for high-quality loudspeakers, microphones, etc., requiring low hysteresis distortion.
Precision Instruments: Pure Iron Core for AC Relay and shielding covers for magnetoelectric instruments.
Electron Beam/Ion Beam Equipment: Focusing electrodes, deflecting electrodes, etc.
High-Requirement Electromagnets: Grooved Core for AC Relay requiring fast response and low power consumption.
Magnetic Shielding: Used in applications requiring extremely high shielding effectiveness (although high-nickel alloys such as permalloy are superior, DT4C is less expensive).
As a Standard Sample: Used as a reference material in magnetic measurements.
our Product
This DT4C AC relay core is specifically designed for various high-precision AC relays. With its excellent magnetic circuit conduction efficiency and extremely low hysteresis loss, it effectively improves the relay's response speed, reduces power consumption, and enhances operational stability and lifespan. It perfectly solves the pain points of traditional relay cores, such as high losses and slow response under high-frequency conditions. Whether in industrial automation control, smart home devices, automotive electronics, or precision instruments-fields with stringent relay performance requirements-our DT4C AC Relay Iron Core provides reliable core component support, making it an ideal choice for fully leveraging the advantages of DT4C material and adapting to high-end AC relay applications.
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