Description
HS Magnet’s Alnico 5 (LNG37) Block Magnet (22.5 × 19.0 × 8.25 mm) combines exceptional magnetic strength with outstanding thermal stability for the most demanding industrial, scientific and aerospace applications. Manufactured from premium Al–Ni–Co alloy and precision-ground to ±0.10 mm, this compact block delivers a uniform, high-flux field, excellent resistance to demagnetization and reliable performance up to 525 °C.
Key Features
- Magnetic Grade: Alnico 5 (LNG37)
- Remanence (Br): 1.23 – 1.28 T
- Maximum Energy Product (BHₘₐₓ): 5.2 – 5.7 MGOe
- Intrinsic Coercivity (Hcb): ≈ 48 kA/m
- Temperature Coefficient of Br: –0.02 %/°C
- Maximum Operating Temperature: 525 °C
Dimensions & Tolerances
- Length: 22.50 mm ± 0.10 mm
- Width: 19.00 mm ± 0.10 mm
- Thickness: 8.25 mm ± 0.10 mm
- Finish: Precision-ground, burr-free surfaces
Customization Options
- Magnetization Direction: Through-thickness, lengthwise or widthwise
- Surface Coatings: Ni–Cu–Ni, zinc or epoxy for enhanced corrosion protection
- Tighter Tolerances: ± 0.05 mm available on request
- Packaging: Bulk, custom trays or tape-and-reel
Typical Applications
- High-temperature sensors, switches & encoders
- DC/AC motors, generators & alternators
- Magnetic couplings & clutches
- Industrial holding, lifting & clamping systems
- Magnetic separators & filters in hot or corrosive environments
- Aerospace, defense & scientific instrumentation
Why Choose HS Magnet?
- 20+ years of Alnico alloy R&D, casting, machining & magnetizing expertise
- In-house magnetic field inspection & batch traceability
- Flexible production: from custom prototypes to high-volume runs
- Fast lead times and worldwide shipping
Contact HS Magnet today to request samples, discuss custom magnetization or obtain a quote for our 22.5×19.0×8.25 mm Alnico 5 (LNG37) block magnets.
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