Overview: This document is a datasheet for Samarium-Cobalt magnetic materials provided by Bakker Magnetics. It includes detailed specifications, magnetic properties, and operational guidelines for different grades of Samarium-Cobalt magnets.

Magnetic Properties: The datasheet outlines the magnetic properties for three grades of Samarium-Cobalt magnets: BM 18, BM 22, and BM 24. Key parameters include:

• Remanence (Br): Ranges from 8.5 to 10.5 kg (850 to 1050 mt).
• Normal Coercivity (-HcB): Ranges from 7.8 to 9.4 koe (620 to 750 ka/m).
• Intrinsic Coercivity (-HcJ): Ranges from 10.0 to 18.8 koe (800 to 1500 ka/m).
• Maximum Energy Product ((B-H)max): Ranges from 17.6 to 25.8 Mgoe (140 to 205 Kj/m³).

Temperature and Density: The document provides temperature coefficients and density for the magnets:

• Temperature Coefficient of Br: -0.05 to -0.03 %/°C.
• Temperature Coefficient of HcJ: -0.3 to -0.2 %/°C.
• Density: 8.1 to 8.3 g/cm³.
• Curie Temperature: 720 to 800°C.
• Continuous Operating Temperature: 250 to 300°C.

Tolerances: Bakker Magnetics guarantees valid tolerances for raw magnets according to DIN 17410 standards. Custom tolerances are available upon request.

Graphical Data: The datasheet includes graphs showing the relationship between magnetic field strength (H) and magnetization (J) for different temperatures, illustrating the performance of BM 18 and BM 22 magnets across a range of temperatures from +20°C to +300°C.

Conversion Factors: The document provides conversion factors for magnetic field strength and magnetization: 1 koe = 79.6 ka/m and 0.1 t = 1 kgs.