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Dexter Magnetic Technologies
Nd-Fe-B Properties Table and Curves

Nd-Fe-B Properties Table and Curves

Product catalog summary

Overview: This document from Dexter Magnetic Technologies Inc. provides comprehensive specifications and properties of various grades of Nd-Fe-B (Neodymium-Iron-Boron) magnets, including technical data on magnetic properties, thermal characteristics, and physical properties.

Magnetic Specifications: The document details multiple grades of Nd-Fe-B magnets, specifying values for maximum energy product (BHmax), residual induction (Br), intrinsic coercivity (Hci), coercivity (Hc), maximum operating temperature (Tmo), and Curie temperature (Tc). It also includes coefficients of induction and coercivity over a temperature range of 20-150°C.

Key Grades and Properties:

N5211: BHmax = 52 MGOe, Br = 14.5 kG, Hci = 11.0 kOe, Hc = 10.6 kOe, Tmo = 50°C, Tc = 310°C.
N5011: BHmax = 50 MGOe, Br = 14.3 kG, Hci = 11.0 kOe, Hc = 10.6 kOe, Tmo = 50°C, Tc = 310°C.
N4811: BHmax = 48 MGOe, Br = 13.9 kG, Hci = 11.0 kOe, Hc = 10.6 kOe, Tmo = 50°C, Tc = 310°C.

Typical Physical Properties:

Curie Temperature: 320 – 380 °C
Coefficient of Thermal Expansion: Perpendicular -1.0 – -3.0 x 10^-6 °C^-1, Parallel +5.0 – +8.0 x 10^-6 °C^-1
Electrical Resistivity: 120 – 160 µΩ·cm
Density: 7.4 – 7.8 g·cm^-3
Vicker’s Hardness: 550 – 650 Hv
Young’s Modulus: 150 – 170 kN·mm^-2
Bending Strength: 0.18 – 0.29 kN·mm^-2
Compressive Strength: 0.8 – 1.0 kN·mm^-2

Graphical Data: The document includes graphs illustrating the relationship between magnetic induction (B) and coercivity (H) for various grades at different temperatures, demonstrating the magnets' performance under varying thermal conditions.

Contact Information: Dexter Magnetic Technologies Inc. can be contacted via phone at +1-847-956-1140, email at [email protected], or through their website www.dextermag.com.

Catalog excerpts

Residual Induction Minimum Intrinsic Coercivity Maximum Energy Product Coefficient Induction Coefficient Coercivity Curie Temp Maximum Operating Temp Email: [email protected] Copyright 2010 © Dexter Magnetic Technologies Inc. All Rights Reserved. For Reference Only. V102

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Nd-Fe-B Typical Physical Properties Curie Temperature Coefficient of Thermal Expansion - Perpendicular Coefficient of Thermal Expansion - Parallel Electrical Resistivity Density Vicker’s Hardness Young’s Modulus Bending Strength Email: [email protected] Copyright 2010 © Dexter Magnetic Technologies Inc. All Rights Reserved. For Reference Only. V101

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