| Brand Name: | DLX |
| Model Number: | 1J30 |
| MOQ: | 5kg |
| Payment Terms: | D/P,D/A,L/C,T/T,VTB |
| Supply Ability: | 1200 tons per month |
High-Stability 1J30 Soft Magnetic Alloy Strip for Precision Temperature Compensation Systems
Engineered for critical magnetic shunts, measurement instruments, and automotive sensors. DLX provides custom-thickness 1J30 cold-rolled strips featuring strictly calibrated Curie temperatures, uniform magnetic permeability decay curves, and ultra-tight dimensional tolerances.
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Modern instrumentation, voltage regulators, watt-hour meters, and aviation transducers rely on permanent magnet systems that inevitably lose magnetic flux as ambient temperatures rise. 1J30 temperature compensation alloy serves as a passive, maintenance-free magnetic shunt that redistributes magnetic flux across varying operating temperatures.
Utilizing advanced Vacuum Induction Melting (VIM) and Electroslag Remelting (ESR) technologies, DLX strictly governs the nickel concentration (≈29.5%−31.5%) and minimizes trace interstitial impurities (Carbon, Sulfur, Phosphorus). This precise chemistry control guarantees:
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| Element | Content Range (%) | Function in Matrix |
|---|---|---|
| Nickel (Ni) | 29.50 – 31.50 | Controls Curie temperature and thermomagnetic slope |
| Carbon (C) | ≤0.03 | Minimized to prevent carbide precipitation and magnetic aging |
| Silicon (Si) | ≤0.30 | Deoxidizer, matrix uniformity |
| Manganese (Mn) | 0.30–0.60 | Improves hot workability and desulfurization |
| Phosphorus (P) | ≤0.020 | Ultra-clean smelting control |
| Sulfur (S) | ≤0.020 | Ultra-clean smelting control |
| Iron (Fe) | Balance | Structural matrix |
| Parameter | Value / Range | Engineering Note |
|---|---|---|
| Curie Temperature (Tc) | +30∘C to +80∘C (Customizable) | Tuned by precise Ni-Fe balance |
| Operating Temperature Range | −40∘C to +80∘C | Standard instrumentation compensation zone |
| Density | 8.05 g/cm3 | Standard theoretical density |
| Electrical Resistivity | ≈0.70–0.85 μΩ⋅m | Ensures minimal eddy current loss |
| Thermal Expansion Coefficient | ≈9.5×10−6/K (20–100∘C) | Compatible with bimetallic and magnetic housings |
| Available Thickness | 0.05 mm–2.50 mm | Thickness tolerance within ±0.003 mm |
| Available Width | 3.0 mm–300 mm | Slit width tolerance within ±0.05 mm |
| Supply Delivery Forms | Precision Coil, Spool, Ribbon, Sheet | Packaged with anti-rust interleaving paper |
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Q1: How does 1J30 alloy achieve temperature compensation in permanent magnet circuits?
A1: Permanent magnets (such as AlNiCo, Ferrite, or NdFeB) naturally lose magnetic flux as ambient temperature rises. 1J30 strip is installed as a parallel magnetic shunt. Because 1J30's magnetic permeability decreases sharply as it approaches its Curie temperature, less flux is shunted through the 1J30 strip and more is forced into the working air gap, effectively neutralizing the magnet's temperature drift.
Q2: Can DLX customize the Curie temperature (Tc) and working range for 1J30?
A2: Yes. By micro-adjusting the Ni content within the 29.5%−31.5% spectrum and configuring custom final cold reduction and annealing cycles, DLX can adjust the Curie point to specific customer targets between −20∘C and +80∘C.
Q3: What heat treatment is recommended after stamping or cutting 1J30 components?
A3: To restore optimum thermomagnetic properties and relieve stamping stress, parts should undergo final annealing in a dry hydrogen atmosphere or high vacuum (<10−2 Pa) at approximately 900∘C−1000∘C, followed by controlled cooling. Detailed annealing curve datasheets are supplied with every shipment.
Q4: What is the lead time and packaging for custom-width 1J30 slit coils?
A4: Standard strip dimensions are available with lead times of 2 to 3 weeks. Precision-slit coils down to 3.0 mm width are packed with inner plastic film, VCI rust prevention paper, and reinforced overseas shipping crates to prevent coil edge damage.
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