Technical Features-Jiangsu Pulong Magnetoelectric Co., Ltd.

Distribution Chart of Magnet Grades

High-Performance Heavy Rare Earth Permanent Magnets

Optimized Composition

Adjusting the ratio of main phase to grain boundary phase, optimizing the grain boundary phase, and improving the magnet's Hcj.
Process Oxygen Control Technology

Stricter control of oxygen content during production, improving magnet consistency.
Refined Powder Production And Mold-Ing

Optimizing fine powder particle size distribution and improving molding orientation.
Precision Sintering And Heat Treatment

Suppressing abnormal grain growth,further optimizing grain boundary phases,and improving temperature stability.

Item	Parameters	Reference Value
Additional magnetic properties	α（Br）/（%/K） Temp. Coeff. of Br / Br	-0.08~-0.12
	β（Hcj）/（%/K） Temp. Coeff. of Hcj / Hcj	-0.42~-0.70
	Tc）/°C Curie Temperature	310-380
	μrec（-）Recoil Permeability	1.05
Mechanical and physical properties	（g/cm³） Density	7.45-7.7
	（Hv） Vickers Hardness	650
	（μΩ・m） Electrical Resistivity	1.4
	MPa Compressive Strength	1050
	MPa Tensile Strength	80
	MPa Bending Strength	290
	（W/（m・k）） Thermal Conductivity	6~8
	GPa Young’s Modulus	160
	（10⁻⁵/K）Coefficient of Thermal Expansion（C⊥）	-1.5
	（10⁻⁵/K）Coefficient of Thermal Expansion（C//）	6.5