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Precision Alloy
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High Stability Soft Magnetic Alloy 1J30 Strip For Temperature Compensation Devices

High Stability Soft Magnetic Alloy 1J30 Strip For Temperature Compensation Devices

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
Detail Information
Place of Origin:
China Jiangsu
Certification:
CE,ROHS
Packaging Details:
Spool package with Carton box, Coil package with polybag, Wooden case package
Supply Ability:
1200 tons per month
Product Description

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.

1J30 soft magnetic alloy details

Product Overview

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:

  • Predictable Flux Diversion: Linear and repeatable magnetic permeability transition across industrial temperature bands.
  • Zero Hysteresis Loss Distortion: Low coercive force to prevent signal drift in sensitive electromagnetic sensors.
  • Customized Processing States: Supplied in cold-rolled (hard/semi-hard) or protective-atmosphere annealed conditions tailored to stamping, blanking, and winding processes.

1J30 soft magnetic alloy process

Technical Specifications
Chemical Composition (Nominal % by Weight)
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
Physical and Thermomagnetic Characteristics
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
Key Features & Benefits
  • Precision-Calibrated Curie Point & Thermomagnetic Sensitivity
    Each production batch undergoes tight metallurgical tuning, ensuring the slope of magnetic induction versus temperature (ΔB/ΔT) matches your exact instrument compensation curve.
  • Ultra-High Chemical Homogeneity
    Refined through multi-stage vacuum melting to eliminate micro-segregation, preventing localized magnetic hot spots and ensuring uniform response across the entire coil length.
  • Superior Stamping and Deep-Drawing Workability
    Controlled grain size and ultra-low inclusion levels allow high-speed progressive die stamping, micro-laser cutting, and intricate component blanking without burrs or edge cracking.
  • Long-Term Magnetic Stability
    Specialized heat treatment stabilization prevents magnetic aging, ensuring measurement instruments maintain class-leading precision over a 15+ year operational lifespan.
  • Ultra-Tight Dimensional and Surface Tolerances
    High-precision four-high and twenty-high cold-rolling mills achieve thickness accuracy within ±0.003 mm, optimizing automated assembly line yields.

1J30 soft magnetic alloy comparison

Applications
  • Electrical Measurement & Power Grid Instrumentation
    Magnetic shunts for mechanical/electronic watt-hour meters, ammeters, voltmeters, and current transformers to eliminate measurement errors caused by ambient temperature changes.
  • Automotive & EV Sensor Assemblies
    Temperature-compensating bypass elements in speed sensors, tachometers, throttle position sensors, and electric vehicle battery flux-gate transducers.
  • Aviation & Marine Navigation Instruments
    Precision flux compensators for gyroscopic compasses, altimeters, airspeed indicators, and permanent magnet tachogenerators operating in extreme thermal environments (−40∘C to +80∘C).
  • Precision Relays, Voltage Regulators & Actuators
    Thermal magnetic bypass plates in voltage regulators, magnetic starters, and temperature-sensitive magnetic switches.
  • Medical & Laboratory Equipment
    Field-stabilizing magnetic shunts in nuclear magnetic resonance (NMR) peripheral sensing components, high-precision laboratory balances, and cryogenic-to-ambient test benches.

1J30 soft magnetic alloy application field

Why Choose Us
  • 1,200 Tons Monthly Capacity & Full-Chain In-House Production
    From vacuum induction melting (VIM), electroslag remelting (ESR), hot forging, precision cold rolling, to bright annealing and slitting, DLX operates a vertically integrated manufacturing line capable of producing over 1,200 tons of high-grade precision and special alloys per month.
  • Proprietary High-Standard Metallurgical Control
    DLX implements stringent in-house metallurgical standards, utilizing 100% spectral analysis, eddy-current flaw detection, and temperature-magnetic permeability profiling on every batch before dispatch.
  • Flexible B2B Engineering & Dynamic MOQ
    We support OEM development with dynamic MOQs tailored to your specific form factors (coils, slit strips, or custom blanks), reducing upfront material costs for pilot runs and scaling seamlessly to mass production.
  • Customized Thermal Magnetic Profiling
    Our dedicated metallurgical engineering team works directly with client technical departments to formulate tailored heat-treatment regimens (Tc shifting, specific field strength response) that match unique permanent magnet pairings.
  • Export-Grade Protective Packaging
    All coils and strips are treated with rust inhibitors, wrapped in vapor corrosion inhibitor (VCI) film, and secured in reinforced wooden crates to ensure zero oxidation during ocean or air freight.

High Stability Soft Magnetic Alloy 1J30 Strip For Temperature Compensation Devices

High Stability Soft Magnetic Alloy 1J30 Strip For Temperature Compensation Devices

Product FAQs

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.

1J30 soft magnetic alloy testing equipment

High Stability Soft Magnetic Alloy 1J30 Strip For Temperature Compensation Devices