Materials & Grades
NdFeB grade selection matrix
A practical matrix to align strength, temperature, and environment requirements.
Last updated on 2026/01/26
Why a selection matrix helps
Choosing grades by N-number alone often leads to either over-specification or thermal failures. A matrix keeps strength and temperature in balance.
Grade selection matrix (conceptual)
| Requirement driver | Primary focus | Typical decision |
|---|---|---|
| High strength, low heat | Energy product | Higher N number |
| Moderate strength, high heat | Temperature class | Higher suffix (M/H/SH/UH) |
| Harsh environment | Corrosion control | Coating + grade confirmation |
| Tight tolerance | Manufacturability | Confirm with supplier before final grade |
Selection workflow
- Define operating temperature range and peak exposure.
- Define target pull force at a realistic air gap.
- Identify environment risks (humidity, chemicals).
- Ask suppliers to recommend grade + suffix combinations.
RFQ details to include
- Temperature range and peaks.
- Target pull force and air gap.
- Magnet shape and magnetization direction.
- Coating and tolerance requirements.
Ready for an RFQ?
Share your drawings, grades, coatings, and quantities. We will coordinate supplier feedback and confirm specs.
Related landing pages
Neodymium Magnets
Source neodymium magnets by shape, grade, coating and tolerance with supplier-confirmed lead times, compliance documents, and OEM RFQ support. Contact us today.
N52 Neodymium Magnets for High-Force Assemblies
Source N52 neodymium magnets for high-force assemblies with RFQ-ready guidance on temperature limits, coating, magnetization, and supplier-backed alternatives.
NdFeB Magnet Grades: Selector Tool and Evidence Report
Use the NdFeB magnet grades selector to compare N-AH temperature lanes, validate sourcing risks, and build an RFQ-ready grade plan. Contact Ganzhou today.
Related resources
NdFeB grades N35 to N52 and temperature classes
How NdFeB grade names relate to strength, temperature limits, and sourcing decisions.
Temperature ratings and demagnetization risk
Understand temperature classes, irreversible loss risk, and how to specify grades for thermal stability.
Pull force and air gap considerations
How air gap, geometry, and material affect magnetic pull force.