What is a Pure Iron Magnetic Core?
A Pure Iron Magnetic Core converts the coil's electromagnetic field into the magnetic force required to attract and release the armature. For latching relays, electromagnetic relays, and low-voltage control devices, the core geometry and material condition directly affect magnetic force, operating behavior, and release characteristics.
This product uses pure iron (DT4C) as the specified magnetic material. Material selection focuses on magnetic consistency, controlled residual magnetism, and repeatable machining or stamping behavior. Dimensional control is maintained against the customer's approved drawing to ensure the DT4C Electromagnet Iron Core interfaces correctly with the coil, armature, and surrounding magnetic circuit.
The main engineering concern is not simply whether the Core Pin can generate magnetic force. The material, geometry, surface condition, and dimensional consistency must remain within the operating window of the complete relay magnetic circuit.
Technical Specifications of Core Pin
| Parameter | Specification Value |
| Material Grade | DT4C Pure Iron |
| Carbon Content (C) | ≤ 0.004% |
| Coercivity (Hc) | ≤ 48 A/m |
| Surface Treatment | Anti‑corrosion Passivation |
Magnetic Circuit Considerations of Soft Magnetic Iron Rod
For a relay, the Precision Relay Core works together with the coil, armature, air gap, and yoke. A change in any one of these elements can alter the required coil force and release behavior.
The DT4C Magnetic Iron Core therefore needs to be controlled:
- Magnetic material composition
- Cross-sectional geometry
- Pole-face dimensions
- Air-gap-related interfaces
- Concentricity and positional dimensions
- Residual magnetism
- Surface condition
These factors are particularly important where the Soft Magnetic Iron Rod inside the relay must release after coil de‑energization without mechanical sticking or excessive magnetic hold.
Frequently Asked Questions about Pure Iron Rod for Relay
What is DT4C pure iron used for in Pure Iron Rod for Relay?
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DT4C electric pure iron is used as a magnetic-path material in relay assemblies where controlled magnetic behavior is required. The core guides electromagnetic flux from the energized coil toward the armature. Material condition, geometry, and residual magnetism all influence operating and release characteristics.
Can Precision Relay Cores be customized for latching relays?
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Yes. A core can be produced according to the latching relay's magnetic circuit, armature geometry, and mechanical interfaces. The required magnetic behavior should be defined from the set/reset sequence, air gap, and holding mechanism before finalizing material and core dimensions.
What information is required for a customized Relay Magnetic Core?
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A production quotation normally requires the material grade, 2D or 3D drawing, material thickness, critical tolerances, annual or batch quantity, surface-treatment requirement, and magnetic specifications. An existing sample can also support engineering review when complete drawings are unavailable.
Can the same Cold Forging Relay Core be used in different relay designs?
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Not necessarily. Even when two relays use DT4C, their coil power, armature geometry, air gap, spring force, and magnetic circuit can differ. Core dimensions and magnetic requirements should therefore be verified against the specific relay design before adopting an existing core.
What anti‑corrosion treatments are applied to prevent the Relay Rod from rusting?
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All components undergo specialized zinc plating or passivation treatments, passing rigorous neutral salt spray testing to guarantee zero oxidation during international sea freight and humid storage.
contact us
Send the Pure Iron Magnetic Core drawing, DT4C material requirement, critical tolerances, magnetic parameters, surface-treatment specification, and target quantity for engineering review.
For new tooling, prototype production, and recurring orders, the manufacturing route can be evaluated from the initial drawing through stamping, inspection, and final delivery. Request a technical quotation with the required Relay Magnetic Core specification, annual volume, and target delivery schedule.
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