Specifications & Technical Details

  • Critical Temperatures for Magnets
  • Neodymium Iron Boron Magnets
  • Sintered NdFeB Magnetic Technical Specifications Chart
  • Ferrite Magnets
  • Samarium Cobalt Magnets
  • Alnico Magnets
  • Extruded Flexible Magnetic Strip
  • Demagnetisation Comparison Graph

    Critical Temperatures for Magnets

      Click here to download the critical temperatures for magnets PDF document.

     

    Neodymium Iron Boron Magnets Properties (NdFeB)

    Common Name Rare earth (or) Neo’s
    Released onto the market 1983
    Magnetic output Very high strength to cost ratio
    Resistance to demagnetisation Very high
    Relative cost Medium
    High temperature tolerance Poor (Although high temp grades are available)
    Corrosion resistance Poor
    Surface finish Can be plated in a range of finishes
    Physical characteristics Very hard and brittle
    Workability Extremely difficult to machine or drill
    Uses Widely used throughout many industries

    Click here for a demagnetisation comparison graph

    Neodymium Round Magnets

     

     

    Neodymium Ring Magnets

     

     

    Neodymium Block Magnets

     

     

    Neodymium Shallow Pot Magnets

     

     

    Neodymium Spherical Magnets

    8mm diameter

     

    Sintered NdFeB Magnetic Technical Specifications

    Click here to view the Sintered NdFeB Technical Specifications chart

     

    Ferrite Magnets Properties

    Common Name Ceramic magnets
    Released onto the market Early 1950’s
    Magnetic output Medium
    Resistance to demagnetisation High
    Relative cost Very cost effective (Low priced)
    High temperature tolerance Good
    Corrosion resistance Excellent
    Surface finish Smooth (Dark grey in colour)
    Physical characteristics Very hard and brittle
    Workability Extremely difficult to machine or drill
    Uses Widely used throughout many industries

    Ferrite Round Magnets

     

     

    Ferrite Ring Magnets

     

     

    Ferrite Block Magnets

     

     

    Ferrite Shallow Pot Magnets

     

    Samarium Cobalt Magnets Properties (SmCo)

    Released onto the market 1970
    Magnetic output Very high strength
    Resistance to demagnetisation High
    Relative cost High
    High temperature tolerance Excellent stability over a wide range
    Corrosion resistance Excellent
    Surface finish Can be plated in a range of finishes
    Physical characteristics Very hard and brittle
    Workability Extremely difficult to machine or drill
    Uses

    Used when high magnetic strength is required in high temperatures

    Click here for a demagnetisation comparison graph

    Samarium Cobalt Magnets

     

    Alnico Magnets Properties (Al-Ni-Co)

    Component metals Aluminium, Nickel and Cobalt
    Released onto the market 1940’s
    Magnetic output Medium strength
    Resistance to demagnetisation Poor
    Relative cost Less cost effective as better alternatives have become available
    High temperature tolerance Excellent stability over a wide range
    Corrosion resistance Good
    Surface finish Often painted red
    Physical characteristics Often has a rough cast finish
    Workability Can be machined and drilled with difficulty
    Uses Used in high temperature environments

    Click here for a demagnetisation comparison graph

    Alnico Horseshoe Magnets

     

    Extruded Flexible Magnetic Strip Properties

    Common Name Mag Strip
    Magnetic Output High strength to cost ratio
    Resistance to demagnetisation Very high
    Relative cost Low cost
    High temperature tolerance Good
    Corrosion resistance Poor on solvents (But good on many other chemicals)
    Surface finish Can be plain or coated with adhesive
    Physical characteristics Soft and flexible
    Workability Can be cut with ease
    Uses Widely used for promotional display boards

    Extruded Flexible Magnetic Strip