Educational reference
NdFeB grade reference filter
Compare 24 reference grades by nominal temperature class and BHmax at 20°C. These inputs cannot establish a safe operating temperature or predict hot magnetic output.
Shows nominal classes at or above this value. Geometry and magnetic loading can lower the usable temperature.
Uses the lower end of the room-temperature reference range. Hot BHmax is not calculated.
Thermal suitability not assessed
Review hot curves, load line, opposing field and duty cycle for the actual part.
10 reference matches · ordered by grade name
N42EH
Drawing review required40–43 MGOe at 20°C · 200°C nominal class
N42H
Drawing review required40–43 MGOe at 20°C · 120°C nominal class
N42SH
Drawing review required40–43 MGOe at 20°C · 150°C nominal class
N42UH
Drawing review required40–43 MGOe at 20°C · 180°C nominal class
N45H
Drawing review required43–46 MGOe at 20°C · 120°C nominal class
N45SH
Drawing review required43–46 MGOe at 20°C · 150°C nominal class
N45UH
Drawing review required43–46 MGOe at 20°C · 180°C nominal class
N48H
Drawing review required45–48 MGOe at 20°C · 120°C nominal class
N48SH
Drawing review required45–48 MGOe at 20°C · 150°C nominal class
N50H
Drawing review required47–50 MGOe at 20°C · 120°C nominal class
Mainrich’s company range is N30 to N56. Grade, series and geometry require confirmation together. The drawing enquiry includes only reference grades within the Mainrich range.
Standard Grades (Up to 80°C)
9 grades in this family
N35
80°CN35 reference: 33–36 MGOe at 20°C, with a nominal 80°C temperature class.
N38
80°CN38 reference: 36–39 MGOe at 20°C, with a nominal 80°C temperature class.
N40
80°CN40 reference: 38–41 MGOe at 20°C, with a nominal 80°C temperature class.
N42
80°CN42 reference: 40–43 MGOe at 20°C, with a nominal 80°C temperature class.
N45
80°CN45 reference: 43–46 MGOe at 20°C, with a nominal 80°C temperature class.
N48
80°CN48 reference: 45–48 MGOe at 20°C, with a nominal 80°C temperature class.
N50
65°CN50 reference: 47–50 MGOe at 20°C, with a nominal 65°C temperature class.
N52
65°CN52 reference: 48–53 MGOe at 20°C, with a nominal 65°C temperature class.
N55
60°CN55 reference: 53–55 MGOe at 20°C, with a nominal 60°C temperature class.
High Temperature (H), up to 120°C
5 grades in this family
N38H
120°CN38H reference: 36–39 MGOe at 20°C, with a nominal 120°C temperature class.
N42H
120°CN42H reference: 40–43 MGOe at 20°C, with a nominal 120°C temperature class.
N45H
120°CN45H reference: 43–46 MGOe at 20°C, with a nominal 120°C temperature class.
N48H
120°CN48H reference: 45–48 MGOe at 20°C, with a nominal 120°C temperature class.
N50H
120°CN50H reference: 47–50 MGOe at 20°C, with a nominal 120°C temperature class.
Super High Temperature (SH), up to 150°C
4 grades in this family
N38SH
150°CN38SH reference: 36–39 MGOe at 20°C, with a nominal 150°C temperature class.
N42SH
150°CN42SH reference: 40–43 MGOe at 20°C, with a nominal 150°C temperature class.
N45SH
150°CN45SH reference: 43–46 MGOe at 20°C, with a nominal 150°C temperature class.
N48SH
150°CN48SH reference: 45–48 MGOe at 20°C, with a nominal 150°C temperature class.
Ultra High Temperature (UH), up to 180°C
3 grades in this family
N35UH
180°CN35UH reference: 33–36 MGOe at 20°C, with a nominal 180°C temperature class.
N42UH
180°CN42UH reference: 40–43 MGOe at 20°C, with a nominal 180°C temperature class.
N45UH
180°CN45UH reference: 43–46 MGOe at 20°C, with a nominal 180°C temperature class.
Extreme High Temperature (EH), up to 200°C
3 grades in this family
N35EH
200°CN35EH reference: 33–36 MGOe at 20°C, with a nominal 200°C temperature class.
N38EH
200°CN38EH reference: 36–39 MGOe at 20°C, with a nominal 200°C temperature class.
N42EH
200°CN42EH reference: 40–43 MGOe at 20°C, with a nominal 200°C temperature class.
Not sure which grade is right?
Our engineers will review your operating temperature, torque requirements, and packaging constraints, then recommend the correct grade with real safety margin, usually within two business days.
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