super strong N52 huge NdFeB Block Magnet is made from an alloy of neodymium, iron, and boron to form the Nd
2Fe
14B tetragonal crystalline structure. This material is currently the strongest type of permanent magnet in the world.
Nd-Fe-B permanent magnet is manufactured in a wide range of shapes, sizes and grades according customer's demand.
NdFeB has a very high energy product and coercivity, can pick up 660 times of own weight of heavy objects.
The advantage is high cost-effective, with good mechanical properties, easy cutting; according customer's demand to manufacture in a wide range of shapes, sizes and grades.
Also have high Br,high Hcj,high (BH)max,and high stability become the important material of the world.
The shortcoming is the low of the Curie temperature and the temperature characteristics, easy to rust, oxidation, Sintered NdFeB's surface is usually required for plating such as zinc, nickel, silver, gold, etc., can also be done phosphorus treatment or spray epoxy resin to slow down the oxidation rate.
Pls see the compare of the coating's results:
Commonly type of coating | Coating thickness(um) | Neutral salt spray test |
dark Ni | Cu | Shine Ni | Total |
Single-layer Ni | 25 | | | 25 | 24h | normal |
Double-layer Ni | 12 | | 10 | 25 | 72h | better |
Dark Ni-Cu–shine Ni | 6.25 | 8.75 | 10 | 25 | 120h | excellent |
See the follows Grade N Sintered NdFeB magnetic energy parameters
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 | ℃ |
N35 | 1.17-1.21 | 11.7-12.1 | 876-899 | 11.0-11.3 | ≥955 | ≥12 | 263-279 | 33-25 | ≤80 |
N38 | 1.22-1.26 | 12.2-12.6 | 876-923 | 11.0-11.6 | ≥955 | ≥12 | 287-303 | 36-38 | ≤80 |
N40 | 1.26-1.29 | 12.6-12.9 | 876-923 | 11.0-11.6 | ≥955 | ≥12 | 303-318 | 38-40 | ≤80 |
N42 | 1.30-1.33 | 13.0-13.3 | 876-926 | 11.0-11.6 | ≥955 | ≥12 | 318-334 | 40-42 | ≤80 |
N45 | 1.33-1.37 | 13.3-13.7 | 876-926 | 11.0-11.6 | ≥955 | ≥12 | 342-358 | 43-45 | ≤80 |
N48 | 1.36-1.42 | 13.6-14.2 | 876-926 | 11.0-11.6 | ≥955 | ≥12 | 358-382 | 45-48 | ≤80 |
N50 | 1.41-1.45 | 14.1-14.5 | 828-907 | 10.4-11.4 | ≥876 | ≥11 | 382-398 | 48-50 | ≤70 |
N52 | 1.44-1.48 | 14.4-14.8 | 828-907 | 10.4-11.4 | ≥876 | ≥11 | 394-414 | 49.5-52 | ≤70 |
The main physical properties of super strong N52 huge NdFeB Block Magnet
magnetic properties | Parameters |
Density /g.cm3 Vickers Hardness HV Resistivity /υΩ.cm Compressive strength/N.mm-2 Coefficient of Thermal Expansion (C⊥)/K-1 Coefficient of Thermal Expansion (C∥) /K-1 | 7.45 570 150 780 -4.8X10-6 -3.4X10-6 |
super strong N52 huge NdFeB Block Magnet with its excellent performance, abundant raw material and reasonable price is to be rapid development and wide application.
Also becoming increasingly popular across a wide range of novelty products for markets
APPLICATION:
automobile industry,
petrochemicals,
nuclear magnetic resonance device,
sound device magnetic suspension system,
headphones,
magnetic vibration device
magnetic connection,
magnetic drive,
Permanent magnet crane
electromagnetic pumps,
magnetic separators
MRI
magnetic transmission machine
magneto therapy equipment
magnetic separation,
magnetic resonance imaging,
sensors
loudspeakers