MAGCRAFT - Model CUP0301 -Cup Magnets

These cup magnets are 0.500" Outside Diameter x 0.132" Inside Diameter and 0.165" Thick. They are mounted with an ANSI #4 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 7.5 lbs. Maximum working temperature is 176 F (80 C).

• Part Number : CUP0301
• Imperial Dimensions : 0.500 inch outside diameter x 0.132 inch inside diameter x 0.165 inch thick
• Metric Dimensions : 12.7mm outside diameter x 3.4mm inside diameter x 4.2mm thick
• Recommended ANSI Screw Size : # 4
• 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]) : 7.5[3.4]
• Surface Field(G) : 3390
• Maximum Operating Temperature : 80 Deg C (176 Deg F)
• Dimensional Tolerance : +/-0.005"
• Magnet Quantity : 6
• Volume (cm3) : 4.2
• Weight (g) : 0.24
• Brand : Magcraft
• Packaging : Magpak Tube
• UPC : 875661003017
• 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