Alnico Class 8 Cylindrical Magnet OD 20xH 40 mm

Description

HS Magnet’s Alnico Class-8 cylindrical magnets (outer Ø 20 × height 40 mm) are designed for the most demanding industrial and audio applications. Crafted from premium Alnico-8 alloy and precision-ground to tight tolerances, these magnets offer exceptional flux density, outstanding temperature resistance and long-term stability.

Key Features

• Material & Magnetic Properties
  • Alloy: Alnico-8 (Al–Ni–Co–Cu)
  • Remanence (Br): ≈ 1.35 T
  • Maximum energy product (BHₘₐₓ): ≈ 8.5 MGOe
  • Coercivity (Hcj): ≈ 55 kA/m
  • Maximum operating temperature: up to 550 °C
• Dimensions & Tolerances
  • Outer diameter (OD): 20.00 mm
  • Height (H): 40.00 mm
  • Standard tolerance: ± 0.10 mm (± 0.05 mm optional)
• Finish & Coating
  • Natural precision-ground surface
  • Optional nickel plating or epoxy coating for corrosion protection
  • Chamfered edges for stress relief
• Magnetization Options
  • Standard: axial (through-thickness)
  • Custom: radial or multi-pole patterns
• Packaging & Handling
  • Individually wrapped with protective foam
  • Bulk trays or custom kits to prevent collision and chipping