Product Introduction
Our DT4 electromagnetic pure iron billet is engineered for DC and low-frequency magnetic applications requiring high permeability and low coercivity. Manufactured to GB/T 6983-2022 standard, DT4 offers ≥99.5% purity with ultra-low carbon (≤0.02%) and tightly controlled residuals, ensuring stable magnetic performance and excellent machinability. Supplied hot-rolled with custom cross-sections and lengths, each batch includes a Mill Test Certificate with full chemical analysis and magnetic property testing.
Quick Specifications
| Parameter | DT4 (Regular Grade) | Notes |
|---|---|---|
| Standard | GB/T 6983-2022 | Current national standard |
| Iron Purity (Fe) | ≥99.8% | Typical ≥99.8% |
| Carbon (C) | ≤0.002% | Ultra-low for magnetic stability |
| Silicon (Si) | ≤0.0061% | |
| Manganese (Mn) | ≤0.07% | |
| Sulfur (S) | ≤0.004% | |
| Phosphorus (P) | ≤0.010% | |
| Coercivity (Hc) | ≤96 A/m | Key magnetic performance indicator |
| Max Permeability (μm) | ≥0.0075 H/m | |
| Saturation Flux (Bs) | ≥1.8 T | At H=10000 A/m |
| Density | 7.87 g/cm³ | |
| Melting Point | ~1535°C | |
| Cross-section | Round, square, rectangular – custom | From 50mm up |
| Length | Custom | Specify your requirement |
| Surface | Hot-rolled with mill scale | Pickling or peeling available |
Frequently Asked Questions
Q: What is the difference between DT4, DT4A, DT4E, and DT4C?
A: They are four magnetic grades with increasing performance – DT4 (regular), DT4A (advanced), DT4E (extra), and DT4C (super). Higher grades offer lower coercivity and higher permeability.
Q: What is coercivity and why does it matter?
A: Coercivity measures resistance to demagnetization. Lower values reduce hysteresis loss and improve magnetic circuit efficiency.
Q: What does "high permeability" mean in practice?
A: It means the material conducts magnetic flux efficiently, enabling smaller components with higher performance.
Q: What documentation is provided?
A: Every batch includes a Mill Test Certificate with chemical composition and magnetic property testing (coercivity, permeability, saturation flux).
Q: What is the typical lead time?
A: Typically 2–4 weeks for custom orders; express options are available on request.
Ready to order? Specify your grade (DT4/DT4A/DT4E/DT4C), cross-section, length, and quantity – we will deliver electromagnetic pure iron billets that perform consistently, batch after batch.
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