What is Maximum Energy Product / (BH)max and How Does It Correspond to Magnet Grade?

The term Maximum Energy Product ((BH)max) is a commonly used, but often misunderstood figure of merit of magnets. The (BH)max is an Energy Density and it is oftentimes used to denote grade. The grade convention is especially used for Rare Earth magnets, (Neodymium Iron Boron Magnets and Samarium Cobalt Magnets). For instance, a grade 48 Neodymium Iron Boron magnet will generally have an advertised (BH)max of 48 MGOe

Novel eco-friendly low cost and energy efficient synthesis of (Nd–Pr–Dy)2Fe14B magnetic powder from monazite concentrate

The second quadrant of the intrinsic magnetic (B-H) hysteresis loop

Maximum Energy Product - an overview

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Permanent Magnet Materials

Permanent Magnet Materials

Second quadrant of the B-H loop and energy product (BH) max = 125 kJ.m

What is Maximum Energy Product (BH)max?

Understanding Neodymium Magnets and Why Grade Matters

Illustration of the magnitude of H (a) for an ellipsoid and (b) for an

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Manufacturing Processes for Permanent Magnets: Part I—Sintering and Casting

B-H curve: shows relation between H c , B r and (BH) max .

30 MGOe energy product in 40% Nd-reduced MM-Nd-Fe-B magnet