SPECIFICATIONS
Each magnet sold separately
These cylinder magnets are 0.250 inch (6.4mm) outside diameter, 0.125 inch (3.2mm) inside diameter and 0.250 inch (6.4mm) long. They are magnetized through the length. They are composed of grade 40 neodymium iron boron magnetic material and are plated in nickel-copper-nickel for a shiny corrosion resistant finish. Maximum working temperature is 176 F (80 C).
| Part Number | NSN0572 |
| Imperial Dimensions | 0.25 inch outside diameter x 0.125 inch inside diameter x 0.25 inch long |
| Metric Dimensions | 6.35mm outside diameter x 3.175mm inside diameter x 6.35mm long |
| Material | Sintered Neodymium-Iron-Boron (NdFeB) |
| Shape | Cylinder |
| Plating | Ni-Cu-Ni (Nickel) |
| Magnetization Direction | Length |
| Grade | N40 |
| Pull Force (lbs[g]) | 2.67[1211] |
| Surface Field(G) | 3905 |
| Maximum Operating Temperature | 80 Deg C (176 Deg F) |
| Dimensional Tolerance | +/-0.005" |
| Magnet Quantity | 25 |
| Volume (cm3) | 0.15 |
| Weight (g) | 1.13 |
| Brand | Magcraft |
| Packaging | Magpak Tube |
| UPC | 897970000723 |
| 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 |