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Help CenterDT4 Series Pure Iron Wire Rod Cold-Drawn to GB/T 14981 Tolerance Standards
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As a specialized manufacturer based in Taiyuan, Shanxi, Shanxi Jurun Technology Co., Ltd. produces premium DT4 Series Pure Iron Wire Rods engineered for precision-driven industries. Our cold-drawn wire rods meet stringent GB/T 14981 tolerance standards, delivering exceptional electromagnetic properties essential for high-performance applications. With over a decade of metallurgical expertise, we ensure consistent quality through vertically controlled production processes.
Core Technical Features:
- Ultra-High Purity: Iron content exceeding 99.8% minimizes magnetic hysteresis losses
- Precision Tolerances: Adherence to GB/T 14981 EL/EM/ER grades with dimensional accuracy ≤±0.02mm
- Superior Surface Integrity: Scale-free surface with roughness Ra ≤ 0.8μm
- Controlled Crystal Structure: Uniform grain size (ASTM No. 8-10) via multi-pass cold drawing
| Parameter | Specification |
|---|---|
| Typical Diameters | 1.0mm - 10.0mm (customizable) |
| Tensile Strength | 350-500 MPa |
| Resistivity | ≤0.12 μΩ·m |
| Coercivity | ≤96 A/m |
Operational Advantages:
• Reduced eddy current losses by 15-20% compared to commercial pure iron
• Enhanced formability with elongation rates up to 25%
• Optimized annealing response for tailored magnetic permeability
Shanxi Jurun Technology leverages China's metallurgical resources to deliver vertically integrated quality control from raw material selection to final inspection. Our Taiyuan-based facility utilizes proprietary cold-drawing technology achieving surface finishes that eliminate secondary machining needs. With dedicated R&D collaboration with regional universities, we maintain cutting-edge capabilities for specialized wire rod applications in aerospace, EV motors, and precision instruments.
FAQ Section
Q: What distinguishes DT4 from other pure iron grades?
A: DT4 features controlled carbon content (≤0.025%) and reduced impurities (S/P ≤0.025%) for superior magnetic saturation.
Q: Can you produce diameters outside standard ranges?
A: Yes, our flexible manufacturing allows diameters from 0.5mm to 15mm with customized tolerance groups.
Q: How does GB/T 14981 tolerance compare to ISO 286?
A: GB/T 14981 EL grade corresponds approximately to ISO h7 tolerance, with EM/ER offering tighter precision.
Q: Do you provide certified material test reports?
A: Full traceability with Mill Test Certificates including chemical analysis and mechanical properties.
Q: What packaging options are available?
A: Standard PVC-coated steel spools (500-2000kg) or custom palletization with anti-rust treatment.
Q: Minimum order quantity?
A: 3 tons for standard grades, with prototype batches available for new applications.
Backed by Shanxi's metallurgical heritage, we deliver precision-engineered solutions for mission-critical electromagnetic components. Contact our Taiyuan technical team today to discuss how DT4 wire rods can optimize your product performance while reducing total ownership costs through extended service life and energy efficiency.
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