The application of permanent magnet material, it is easy to only pay attention to the magnetic properties of materials, the stability of its great importance is not enough, the stability of the material used, including stability, temperature stability, external magnetic field under the action of stability, and ironmagnetic material exposure to the role of stability, stability under mechanical action, the stability of the-ray irradiation, chemical stability and so on.In fact,the stability is important when you use the magnet.so we should keep the stability,such as surface coating,it is chemical stability: anti-corrosion and oxidation resistance. Surface coating to protect the increased corrosion resistance.
This permanent magnet block is coated color Zinc.pls see the details properties as follows:
Grade | Residual Induction | Coercive Force | Intrinsic Coercive Force | Maximum Energy Product | Maximum Operating Temperature | ||||
Br | Hcb | Hcj | (BH)max | Tw | |||||
T | KGS | KA/m | KOe | KA/m | KOe | KJ/m3 | MGOe | ℃ | |
N35M | 1.17-1.21 | 11.7-12.1 | 892-915 | 11.2-11.5 | ≥1114 | ≥14 | 263-279 | 33-35 | ≤100 |
N38M | 1.22-1.26 | 12.2-12.6 | 907-931 | 11.4-11.7 | ≥1114 | ≥14 | 287-303 | 36-38 | ≤100 |
N40M | 1.26-1.29 | 12.6-12.9 | 907-947 | 11.4-11.9 | ≥1114 | ≥14 | 303-318 | 38-40 | ≤100 |
N42M | 1.30-1.33 | 13.0-13.3 | 907-947 | 11.4-11.9 | ≥1114 | ≥14 | 318-334 | 40-42 | ≤100 |
N45M | 1.33-1.37 | 13.3-13.7 | 907-955 | 11.4-12.0 | ≥1114 | ≥14 | 334-358 | 42-45 | ≤100 |
N48M | 1.36-1.42 | 13.6-14.2 | 907-955 | 11.4-12.0 | ≥1114 | ≥14 | 358-382 | 45-48 | ≤100 |
demagnazation cureve of permanent magnet block for M grade magnet material: