Alnico Magnetic

Product catalog summary

Introduction
This datasheet provides technical specifications and properties of Alnico magnetic materials, produced by Bakker Magnetics b.v., a company based in the Netherlands.

Magnetic Properties
The datasheet lists the magnetic properties of different Alnico materials, including:

Remanence (Br): Measured in kg and mt, indicating the magnet's ability to retain magnetization.
Coercivity (-HcB and -HcJ): Measured in koe and ka/m, representing the resistance to demagnetization.
Max. Energy Product ((B-H)max): Given in Mgoe and Kj/m3, indicating the energy density of the magnet.

Specific values are provided for Bm 260, Bm 450, and Bm 500.

Temperature and Density Properties
The datasheet includes:

Temperature Coefficients: For Br and HcJ, both at -0.02%/°C.
Density: 7.2 g/cm3 for Bm 260 and Bm 450, and 7.2 g/cm3 for Bm 500.
Curie Temperature: Around 860°C for Bm 260 and Bm 500, and 850°C for Bm 450.
Continuous Operating Temperature: 500°C for all materials.
Recommended Magnetising Field: 800 koe for Bm 260 and Bm 450, and 500 koe for Bm 500.

Additional Information
Demagnetization curves and additional data are available upon request. Bakker Magnetics can provide specific tolerances for raw magnets according to DIN 17410 standards, with the possibility of custom tolerances upon request.

Catalog excerpts

Datasheet Alnico Magnetic Centre of magnetic knowledge...

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Alnico Magnetic material A l n i c o m a g n e t i c m at e r i a l Mag n e tic pr operties Name Remanence Remanence Normal Normal Intrinsic Intrinsic Max. energy Br (kG) Br (mT) coercivity coercivity coercivity coercivity product -HcB (kOe) -HcB (kA/m) -HcJ (kOe) -HcJ (kA/m) (B-H)max Max. energy product (B-H)max (MGOe) Kj/m3 BM 260 6.1 610 1.3 100 1.38 110 2.4 19 BM 450 8.5 850 1.3 100 1.38 110 4.5 36 BM 500 11.6 1160 0.6 48 0.63 50 4.4 35 A l n i c o m a g n e t i c m at e r i a l Mag n e tic pr operties Name Temperature Temperature Density Relative Curie Continuous Recommended Recommended...

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