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    These cup magnets are 1.000" Outside Diameter x 0.184" Inside Diameter and 0.235" Thick. They are mounted with an ANSI #8 screw. They are magnetized through the thickness. They are composed of grade 40 neodymium iron boron magnetic material and are plated in nickel-copper-nickel for a shiny corrosion resistant finish. The cup is un-plated mild steel. The magnet is slightly recessed to allow the durable steel cup to contact the surface, protecting the magnet. Their individual pull force is approximately 51.8 lbs. Maximum working temperature is 176 F (80 C).

    Part Number CUP0304
    Imperial Dimensions 1.000 inch outside diameter x 0.184 inch inside diameter x 0.235 inch thick
    Metric Dimensions 25.4mm outside diameter x 4.7mm inside diameter x 6.0mm thick
    Recommended ANSI Screw Size #8
    Material Sintered Neodymium-Iron-Boron (NdFeB), Mild Steel
    Shape Cup Ring
    Plating Ni-Cu-Ni (Nickel) on Magnet, Steel Cup is Un-plated
    Magnetization Direction Thickness
    Grade N40
    Pull Force (lbs[kg]) 51.8[23.5]
    Surface Field(G) 4390
    Maximum Operating Temperature 80 Deg C (176 Deg F)
    Dimensional Tolerance +/-0.005"
    Magnet Quantity 2
    Volume (cm3) 4.2
    Weight (g) 0.24
    Brand Magcraft
    Packaging Magpak Tube
    UPC 875661003048
    Remanent Flux Density Br (kG [T]) 12.5-12.8 [1.25-1.28]
    Coercivity HcB (kOe [kA/m]) >=11.3 [>=923]
    Intrinsic Coercivity HcJ (kOe [kA/m]) >=12.0 [>=995]
    Maximum Energy Product Bhmax (MGOe [kJ/m3]) 38-41 [302-326]
    Magnet Density p(g/cm3) >=7.45
    Magnet Compression Strength (Mpa) 600-1200
    Magnet Bending Strength (Mpa) 150-380
    Magnet Vickers Hardness (HV) 460-660
    Magnet Recoil Permeability (urec) 1.05
    Magnet Electrical Resistance (Ohm*mm2/m) 1.25-1.55
    Magnet Curie Temperature Tc (�C) 310
    Magnet Thermal Expansion Coefficient 100�C//(x10^-6/K) 6
    Magnet Thermal Expansion Coefficient 100�C?(x10^-6/K) -1


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