Product Overview
Electromagnetic relays and solenoids rely on a soft magnetic core that can rapidly magnetize and demagnetize with minimal energy loss. Our 30mm regular square electrolytic iron flakes are designed for easy stacking, stamping, or insertion into relay yokes, armatures, and solenoid plungers. The regular 30mm × 30mm shape ensures:
Uniform filling of magnetic circuits
Consistent magnetic path length
Reduced air gaps in assembled components
As the actual manufacturer, we control purity, grain structure, and magnetic properties from electrolyte to finished flake. You get factory‑direct pricing, full traceability, and the ability to customize chemical composition to meet your specific relay or solenoid grade requirements (e.g., DT4, DT4C, or equivalent).
Key Features
| Feature | Benefit for Relays & Solenoids |
|---|---|
| 30mm regular square shape | Easy to handle, stack, and assemble; consistent magnetic path |
| High magnetic permeability (μ ≥ 10,000) | Fast response time, high sensitivity |
| Low coercivity (Hc ≤ 72 A/m for DT4, ≤48 A/m for DT4C) | Quick de‑energization, reduces residual magnetism |
| High saturation induction (Bs ≥ 2.0 T) | Strong holding force in solenoids |
| High purity (≥99.9%) | Minimizes impurities that cause magnetic aging |
| Customizable composition | Tailor carbon, oxygen, and trace elements to your application |
| Factory direct | Competitive pricing, direct technical support |
Packaging & Delivery
Standard packaging: 25 kg or 50 kg vacuum‑sealed plastic bags + steel drums, with oxygen absorber to prevent surface oxidation
Custom packaging: Small boxes (1‑5 kg) for prototyping; palletized bulk bags
Lead time: 7 days for DT4 grade; 15 days for DT4C or custom composition
Shipping: Sea freight (FCL/LCL), air freight, or express courier
Factory location: Shanxi Province, China – welcome for quality audit.
Frequently Asked Questions
Q: Can you supply a smaller trial quantity before bulk order?
A: Yes. Samples (1 2 kg) are available for testing – you only pay shipping. Trial orders of 50 100 kg are also welcome.
Q: Do you offer any price advantage compared to traders?
A: Absolutely. As the manufacturer, our factory-direct price is typically 15-25% lower than trading companies for the same purity grade. Request a quote to compare.
Q: Q: Do you provide magnetic property test reports?
A: A: Yes. Each batch can be tested for permeability.
Q: Why use 30mm square flakes instead of powder or rod for relays?
A: Square flakes are ideal for stacked laminated cores or stamped yokes. They provide a consistent magnetic path without the need for complex powder compaction or rod cutting. Many relay manufacturers prefer this shape for high‑volume production..
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