Select Magnet Materials from MPCO Magnets ( Neodymium, NdFeB Magnets, SmCo, Alnico, Ceramic Magnets and others )
When choosing a magnet material to be incorporated into your specific application, their properties need to be identified and compared to correctly evaluate their functional workability and economic feasibility. Design engineers should consider the magnetic requirement, physical requirement, working temperature range, product cost and manufacturing lead time. There is a list of commercially available permanent magnet materials to choose from: neodymium magnets, samarium cobalt, alnico, ceramic and flexible. Let take a quick look at their difference.
Select Magnet Materials from MPCO Magnets
Table: Key properties comparisons among the magnet materials
| Material | Max. Available Remanence, Br (KGs) | Max Energy Products, (BH)max (MGOe) | Max Intrinsic Coercivity, Hci (Oe) | Maximum Working Temp | Machinability Index | $ Index /Weight | $ Index /BHmax | Special Characters |
| Neodymium, NdFeB (sintered) | 14.8 | 53 | 35,000 | 220°C /428°F | 50% | 40% | 16% | Can be easily corroded and need plating, Brittle, Strongest |
| SmCo | 11 | 30 | 25,000 | 350°C /662°F | 70% | 100% | 64% | Very Brittle, Good magnetic property |
| Alnico | 13.5 | 9 | 2,050 | 550°C /1022°F | 100% | 32% | 100% | Withstand high temp, corrosion resistant |
| Ceramic | 3.85 | 3.5 | 3,050 | 450°C /842°F | 50% | 5% | 13% | Hard, Brittle |
| Flexible | 1.7 | 2 | 3,000 | 100°C /212°F | 10% | 3% | 20% | Like rubber, Can be easily cut using simple cutting tools |
Remanence, or residual induction, is how strong a magnet can be.
Max. Energy Product is the maximum amount of magnetic energy stored in a magnet.
Intrinsic Coercivity Force is the irreversibility of magnetization by external magnetizing field.
Neodymium magnets are the strongest with highest resistance to demagnetization. However, it can be easily corroded or oxidized with high content of iron and almost always require plating.
If the operating temperature is close to the recommended working temperature for a specific material and grade, be extra cautious that the magnet would not be permanently demagnetized.
Price index shown above is only a general guideline. Material cost is also dependent on magnet grade, order volume, magnetization orientation, size and shape complexity.
Production lead time is dependent on the shape complexity and size of magnet, especially if the magnets are highly brittle. Molds are often required to be made first.
Above is only a quick reference. For more details on the properties of each material and available grades, please refer to our individual magnet material overview or contact us.
Rare Earth NdFeB and SmCo Laminated Permanent Magnet
Rare Earth NdFeB and SmCo Laminated Permanent Magnet, High Efficiency Motor Laminated Segmented Magnet, Layered Magnet, Segmentation Technology Lamination Magnet, Neodymium Split Magnet, Permanent Laminated Magnets for high efficiency motors to eddy current reduction Rare Earth NdFeB and SmCo Laminated Permanent Magnet Item No. MPCO-LAMN OR MPCO-LAMS series 1. Laminated magnetd can reduce eddy current loss […]Select Magnet Materials from MPCO Magnets
High Efficiency Motor Laminated Segmented Magnet
High Efficiency Motor Laminated Segmented Magnet, Segmentation Technology Layered Magnet, Segmented Lamination Magnet, NEODYMIUM split magnet, High-resistivity sintered rare earth arc laminated magnets, Permanent type Laminated Magnets for high efficiency motors to eddy current reduction High Efficiency Motor Laminated Segmented Magnet Item No. MPCO-LAMN OR MPCO-LAMS series Laminated magnetd can reduce eddy current loss in high […]Select Magnet Materials from MPCO Magnets
Low Eddy Current Losses Segment SmCo Laminated Magnet
Low Eddy Current Losses Segment SmCo Laminated Magnet, Laminated SmCo Magnets for Eddy Current Reduction, Segmentation Laminated Magnet Reduce Eddy Current Loss in High-Efficiency Motors, rare earth smco arc laminated magnets for aerospace Low Eddy Current Losses Segment SmCo Laminated Magnet Item No. MPCO-LAMS series The magnet made by segmentation technology can be called laminated […]Select Magnet Materials from MPCO Magnets
