Sintered Neodymium Magnetic Properties and Surface Treatment

Short Description:

Sintered Neodymium Magnet has the high remanence, high coercive force, high energy product and high performance. It is easily formed into various sizes, and widely used in mini-motors, meters, sensors, sound device, magnetic suspension system, magnetic transmission machine and iatrical apparatus and other applications. It is prone to corrosion in humid environments, It usually need surface treatment according to customer’s requirements to protect magnet. We can offer the coating included: Zin...


  • FOB Price: US $0.5 - 9,999 / Piece
  • Min.Order Quantity: 100 Piece/Pieces
  • Supply Ability: 10000 Piece/Pieces per Month
  • Port: NINGBO
  • Payment Terms: L/C,D/A,D/P,T/T
  • Product Detail

    Product Tags

    Sintered Neodymium Magnet has the high remanence, high coercive force, high energy product and high performance. It is easily formed into various sizes, and widely used in mini-motors, meters, sensors, sound device, magnetic suspension system, magnetic transmission machine and iatrical apparatus and other applications. It is prone to corrosion in humid environments, It usually need surface treatment according to customer’s requirements to protect magnet. We can offer the coating included: Zinc, Nickel, Silver, Gold-plating, Passivation, Phosphor and Spray Epoxy Resin.

    Magnetic Properties:

    Material Type Residual Flux Density
    (Br)
    Coercive Force
    (Hc)
    Intrinsic Coercive Force (Hcj) Max.Energy Product
    (BH)max
    N35 11.7-12.1 KGs >11.0 KOe >12 KOe 33-35 MGOe
    N38 12.2-12.6 KGs >11.0 KOe >12 KOe 36-38 MGOe
    N40 12.6-12.9 KGs >11.0 KOe >12 KOe 38-40 MGOe
    N42 13.0-13.2 KGs >11.0 KOe >12 KOe 40-42 MGOe
    N45 13.3-13.7 KGs >11.0 KOe >12 KOe 43-45 MGOe
    N48 13.8-14.2 KGs >11.0 KOe >12 KOe 45-48 MGOe
    N50 14.1-14.5 KGs >11.0 KOe >11 KOe 48-50 MGOe
    N52 14.5-14.8 KGs >11.2 KOe >11 KOe 49.5-52 MGOe
    N35M 11.7-12.1 KGs >11.4 KOe >14 KOe 33-35 MGOe
    N38M 12.2-12.6 KGs >11.4 KOe >14 KOe 36-38 MGOe
    N40M 12.6-12.9 KGs >11.4 KOe >14 KOe 38-40 MGOe
    N42M 13.0-13.3 KGs >11.4 KOe >14 KOe 40-42 MGOe
    N45M 13.3-13.7 KGs >11.4 KOe >14 KOe 42-45 MGOe
    N48M 13.6-14.2 KGs >11.4 KOe >14 KOe 45-48 MGOe
    N50M 14.1-14.5 KGs >11.4 KOe >14 KOe 48-50 MGOe
    N33H 11.4-11.7 KGs >10.3 KOe >17 KOe 31-33 MGOe
    N35H 11.7-12.1 KGs >10.8 KOe >17 KOe 33-35 MGOe
    N38H 12.2-12.6 KGs >11.4 KOe >17 KOe 36-38 MGOe
    N40H 12.6-12.9 KGs >11.4 KOe >17 KOe 38-40 MGOe
    N42H 13.0-13.3 KGs >11.4 KOe >17 KOe 40-42 MGOe
    N45H 13.3-13.7 KGs >11.4 KOe >17 KOe 42-45 MGOe
    N48H 13.6-14.2 KGs >11.4 KOe >16 KOe 45-48 MGOe
    N30SH 10.8-11.2 KGs >10.1 KOe >20 KOe 28-30 MGOe
    N33SH 11.4-11.7 KGs >10.3 KOe >20 KOe 31-33 MGOe
    N35SH 11.7-12.1 KGs >10.8 KOe >20 KOe 33-35 MGOe
    N38SH 12.2-12.6 KGs >11.4 KOe >20 KOe 36-38 MGOe
    N40SH 12.6-12.9 KGs >11.4 KOe >20 KOe 38-40 MGOe
    N42SH 13.0-13.3 KGs >11.4 KOe >20 KOe 40-42 MGOe
    N45SH 13.3-13.7 KGs >11.4 KOe >19 KOe 43-45 MGOe
    N28UH 10.4-10.8 KGs >9.8 KOe >25 KOe 26-28 MGOe
    N30UH 10.8-11.2 KGs >10.1 KOe >25 KOe 28-30 MGOe
    N33UH 11.4-11.7 KGs >10.3 KOe >25 KOe 31-33 MGOe
    N35UH 11.7-12.1 KGs >10.8 KOe >25 KOe 33-35 MGOe
    N38UH 12.2-12.6 KGs >11.4 KOe >25 KOe 36-38 MGOe
    N40UH 12.6-12.9 KGs >11.4 KOe >25 KOe 38-40 MGOe
    N28EH 10.4-10.8 KGs >9.8 KOe >30 KOe 26-28 MGOe
    N30EH 10.8-11.2 KGs >10.1 KOe >30 KOe 28-30 MGOe
    N33EH 11.4-11.7 KGs >10.3 KOe >30 KOe 31-33 MGOe
    N35EH 11.7-12.1 KGs >10.8 KOe >30 KOe 33-35 MGOe
    N38EH 12.2-12.6 KGs >10.8 KOe >30 KOe 36-38 MGOe

    Plating Characteristics

    Plating Type Overall Thickness Salt Spray Test Pressure Cooker Test
    NiCuNi 15-21 μm 24 hours 48 hours
    NiCuNi + Epoxy 20-28 μm 48 hours 72 hours
    NiCuNi + Gold 16-23 μm 36 hours 72 hours
    NiCuNi + Silver 16-23 μm 24 hours 48 hours
    Zinc 7-15 μm 12 hours 24 hours

    Each individual layer of Nickel and Copper are 5-7 μm thick. The Gold and Silver plating layers are 1-2 μm thick.
    Test results shown to allow comparison between plating options. Performance in your application under your specific test conditions may vary. Salt Spray testing conducted with a 5% NaCl solution, at 35°C. Pressure Cooker Test (PCT) conducted at 2 atm, 120°C at 100% RH.




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