Industrial Pure Iron Sheet & Coil (DT4/DT4E)
Industrial Pure Iron Sheet & Coil (DT4/DT4E)
High-purity industrial iron in DT4, DT4E and 4N grades, delivering excellent magnetic permeability, low coercivity and superior ductility for electromagnetic components.
Overview
MESCO supplies industrial pure iron in sheet, coil, strip and bar form for electromagnetic and precision component manufacturing. Pure iron offers the highest saturation flux density among soft magnetic materials combined with excellent ductility, making it ideal for relay cores, solenoid parts, magnetic shields and instrument components.
Available in DT4, DT4E and DT4A grades under GB/T 6983, with iron content of 99.5% or higher, our material is supplied annealed and leveled for consistent magnetic and mechanical performance.
What Is Industrial Pure Iron?
Industrial pure iron is low-carbon iron refined to remove most impurities, leaving iron content above 99.5%. Its low carbon and impurity levels give it high magnetic permeability, low coercive force and easy cold working, which is why it is used wherever magnetic circuits must carry flux efficiently and precisely.
Grade Selection
| Grade | Purity | Typical Use |
|---|---|---|
| DT4 | Fe >= 99.5% | Relay parts, general magnetic circuits |
| DT4E | Fe >= 99.5% (low coercivity) | Precision relays, solenoid cores |
| DT4A | Fe >= 99.5% (aged stable) | Stable magnetic components, instruments |
| 4N | Fe >= 99.99% | Research, high-end magnetic applications |
Key Features & Benefits
- High magnetic permeability: efficient magnetic flux carrying for compact designs.
- Low coercivity: easy magnetization and demagnetization for switching devices.
- High saturation induction: handles strong magnetic fields without saturation loss.
- Excellent ductility: stamps, deep draws and forms into complex parts.
- Clean surface: suitable for plating and precision machining.
- Custom processing: slitting, cutting and annealing to your specification.
Specifications & Customization
| Parameter | Range / Option |
|---|---|
| Grade | DT4, DT4E, DT4A, DT4C, 4N |
| Thickness | 0.05 - 20 mm |
| Width | 5 - 1250 mm (strip and sheet) |
| Form | Coil, sheet, slit strip, bar, round rod |
| Condition | Annealed, bright annealed, hard, leveled |
| Testing | Magnetic property report, chemical analysis |
Tell us your grade, size, quantity and magnetic property requirements. Sample pieces with test data can be provided for evaluation.
Applications
- Relay and contactor cores
- Solenoid and electromagnet parts
- Magnetic shields for instruments and medical devices
- Motor and generator magnetic circuits
- Magnetic clutch and brake components
- Instrument housings and precision mechanical parts
Quality Control
Each heat is chemically analyzed and magnetically tested for permeability and coercivity. Dimensions and surface quality are verified before packing, and material certificates with full chemical composition are provided with every order.
Why Choose MESCO?
- 19 years of specialty steel supply experience
- Stable DT4 sourcing with consistent purity
- Magnetic and chemical test reports available
- Precision slitting and cutting capabilities
- Trusted by electromagnetic component manufacturers
FAQ
What is the iron content of DT4 pure iron?
DT4 grades contain 99.5% iron or higher; 4N grade reaches 99.99% for research-grade applications.
What is the difference between DT4 and DT4E?
DT4E is processed for lower coercivity, giving more sensitive and consistent switching performance in precision relays and solenoids.
Can you supply annealed strip for stamping?
Yes, we supply annealed and leveled strip in widths and thicknesses matched to your stamping die.
Do you provide magnetic property test reports?
Yes, permeability, coercivity and saturation test data can be supplied with each batch.
Can pure iron be electroplated?
Yes, the clean surface is suitable for nickel, zinc and other plating processes.
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