Information of Disc Magnets :
Neodymium Super Powerful Disc Magnets for Sale China Supplier for Small Strong Disc Magnets
The Definition of Neodymium Disk Magnets:
Disc magnets are the magnets which have a greater diameter than thickness, and are available in sizes approx 2mm up to approx 90mm diameter.
The disc magnets have two dimensions: diameter and thickness, therefore the dimensions of disc magnets are measured "Diameter x Height".
Description of N45 Grade D25 x 5mm Neodymium Super Powerful Disc Magnets
Magnet Type: Rare Earth Neodymium Magnet.
Dimensions: D25 x 5mm.
Grade: N45. For permanent magnets, the grade refers to the materials used in the production process. Material "grades" range from low end (weaker) to high end (stronger).
| Material Grades of Neodymium Iron Boron Magnets | ||
| 1 | Magnet N | N35, N38, N40, N42, N45, N48, N50, N52 |
| 2 | Magnet M | 33M, 35M, 38M, 40M, 42M, 45M, 48M, 50M |
| 3 | Magnet H | 35H, 38H, 40H, 42H, 45H, 48H |
| 4 | Magnet SH | 35SH, 38SH, 40SH, 42SH, 45SH |
| 5 | Magnet UH | 28UH, 30UH, 33UH, 35UH, 38UH |
| 6 | Magnet EH | 28EH, 30EH, 33EH, 35EH, 38EH |
| 7 | Magnet AH | 30AH, 33AH |
Pictures of N45 Grade D25 x 5mm Neodymium Super Powerful Disc Magnets for Sale China Supplier for Small Strong Disc Magnets: 
The Physical Properties of Neodymium Disc Magnets Supplier Super Strong Neodymium Magnets Disk:
| Parameters | Units | Indicators |
| Density | g/cm³ | ≥7.3 |
| Home temperature | ℃ | 310-340 |
| BrReversible temperature coefficient | ℃/% | -0.100~-0.130 |
| HcjReversible temperature coefficient | ℃/% | 0.40~0.70 |
| Compressive strength | N/mm2 | 1050 |
| Bending strength | N/mm2 | 250 |
| Tensile strength | N/mm2 | 80 |
| Webster Hardness | 600 | |
| Coefficient of thermal expansion(20 to 200℃) | 10-6/k | ∥5⊥-1.5 |
| Specific heat | J/(Kg.K) | 460 |
| Thermal conductivity | W/(m.K) | 9 |
| Resistivity | μΩ.cm | 150 |
Packing details
Application:
