P6 Hysteresis Alloy

Hysteresis Alloys / Wrought Permanent Magnet Alloys / Semi-Hard Magnetic Alloys / Semi-Permanent Magnetic Alloys

P6 alloy is a precipitation-hardening iron-cobalt-vanadium hysteresis alloy, classified as a workable semi-hard magnetic alloy. It is characterized by high hysteresis loss and low magnetizing force, and it can be cold-worked into complex shapes prior to final heat treatment. Its ultimate magnetic properties are achieved and stabilized through controlled heat treatment.

P6 alloy is primarily used in hysteresis motors, magnetic actuators, bias magnets, magnetic encoding devices, excitation coils, relays, and other precision magnetic components requiring stable semi-hard magnetic properties.

Product form: Hot-rolled (forged) bars, cold-rolled strips, custom products

Dimensions: Cold-rolled strip thickness>0.2 mm; Width 50–120 mm (tolerance 0.5 mm); Hot-forged bars Φ >30 mm (tolerance 3 mm); Hot-rolled bars Φ 10–30 mm (tolerance 0.5 mm).

Delivery condition: Solution-annealed / Cold-rolled

Surface Quality: Cold-rolled strip surfaces are smooth and free from significant defects such as cracks, delamination, scabs, and coarse burrs. Hot-forged (or hot-rolled) bar surfaces are free from significant defects such as cracks, folds, laps, and indentations.

Test Items: Chemical Composition / Dimensions / Mechanical Properties / Magnetic Properties / Metallography
Documentation: MTC / Inspection Report / Third-Party Inspection

1. Chemical Composition

Data is based on the GB/T 14988 standard.

2. Magnetic property

The final magnetic properties are strongly influenced by the cold-worked state, part geometry, aging or heat-treatment schedules, and magnetic-property testing methods.

3. Mechanical property

The magnetic properties of P6 alloy must be activated through an aging treatment involving holding the material at 550–600°C for 2–5 hours; these properties are extremely sensitive to the aging temperature. A temperature deviation exceeding ±10°C can lead to significant fluctuations in coercivity and remanence, and the supplied products require this aging treatment.

The P6 alloy is specifically designed for applications requiring hysteresis functionality within the low-to-medium temperature range (≤150°C).

Recommend:

 

• Hysteresis motor rotors: Leverages high hysteresis loss characteristics to achieve smooth starting and synchronous operation; this is the most typical application scenario for P6.
• Hysteresis brakes and damping devices: Combines low magnetizing force with high hysteresis loss to provide precise torque control and damping effects.
• Micro-motors for aviation instruments: A key material for hysteresis motor rotors in gyroscope systems, where strict control over stray magnetic fields is required.
• Wiegand wires and deformable semi-hard magnetic components: Utilizes the material's excellent ductility and machinability.

should  Avoid

 

• High-temperature environments (>150°C): Long-term operating temperatures must not exceed 150°C, as high temperatures cause significant degradation of hysteresis performance.
• Welding: Welding disrupts the precipitated phases formed during aging, causing a substantial loss of magnetic properties; avoid welding for functional magnetic components.
• Heavy-stock machining: Components must be fully formed prior to aging treatment; the material becomes extremely hard after aging, making it unsuitable for heavy-stock machining.

Lork Group
Marketing Operations Department

Email: claire@lorkgroup.com
WhatsApp: +86 199 3707 5488

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