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0.5” X 0.25” X 0.125” RARE EARTH RING MAGNET (12)

0.5” X 0.25” X 0.125” RARE EARTH RING MAGNET (12)
0.5” X 0.25” X 0.125” RARE EARTH RING MAGNET (12)0.5” X 0.25” X 0.125” RARE EARTH RING MAGNET (12)

Part# MFM814

Rare-Earth Ring Magnets, 0.5 in. Outside Diameter x 0.25 in. Inside Diameter x 0.125 in. Thick, 12-Count

Product Description

These ring magnets are 0.500"(12.7mm) outside diameter x 0.250"(6.4mm) inside diameter x 0.125"(3.2mm) thick. 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. Their individual pull force is approximately 2.6 lbs. Maximum working temperature is 176 F (80 C).

Part Number NSN0814
Imperial Dimensions 0.5 inch outside diameter x 0.25 inch inside diameter x 0.125 inch thick
Metric Dimensions 12.7mm outside diameter x 6.35mm inside diameter x 3.175mm thick
Material Sintered Neodymium-Iron-Boron (NdFeB)
Shape Ring
Plating Ni-Cu-Ni (Nickel)
Magnetization Direction Thickness
Grade N40
Pull Force (lbs[g]) 2.67[1211]
Surface Field(G) 3323
Maximum Operating Temperature 80 Deg C (176 Deg F)
Dimensional Tolerance +/-0.005"
Magnet Quantity 12
Volume (cm3) 0.3
Weight (g) 2.26
Brand Magcraft
Packaging Magpak Tube
UPC 875661001143
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]
Density p(g/cm3) >=7.45
Compression Strength (Mpa) 600-1200
Bending Strength (Mpa) 150-380
Vickers Hardness (HV) 460-660
Recoil Permeability (urec) 1.05
Electrical Resistance (Ohm*mm2/m) 1.25-1.55
Curie Temperature Tc (°C) 310
Thermal Expansion Coefficient 100°C//(x10^-6/K) 6
Thermal Expansion Coefficient 100°C?(x10^-6/K) -1