Grade tables & selection
Typical ranges for the grades we quote most often. Final values are stated per production datasheet with every lot.
Sintered NdFeB — N series (80 °C max)
| Grade | Br (kGs) | HcJ (kOe) | Max working temp |
|---|
| N35 | 11.7–12.1 | ≥ 11.0 | 80 °C |
| N38 | 12.1–12.5 | ≥ 11.0 | 80 °C |
| N40 | 12.5–12.8 | ≥ 11.0 | 80 °C |
| N45 | 13.2–13.6 | ≥ 11.0 | 80 °C |
| N48 | 13.7–14.1 | ≥ 11.0 | 80 °C |
| N50 | 14.0–14.5 | ≥ 11.0 | 65 °C |
| N52 | 14.3–14.8 | ≥ 11.0 | 65 °C |
Temperature classes (same Br range as base grade)
| Class | HcJ | Max working temp | Typical use |
|---|
| M | ≥ 14 kOe | 100 °C | Appliance latch magnets |
| H | ≥ 16 kOe | 120 °C | Motor sensor assemblies |
| SH | ≥ 20 kOe | 150 °C | Automotive-adjacent parts |
| UH | ≥ 25 kOe | 180 °C | Under-hood and industrial |
Hard ferrite — Y series
| Grade | Br (kGs) | HcJ (kOe) | Max working temp |
|---|
| Y25 | 3.5–3.8 | 2.5–3.2 | 250 °C |
| Y30 | 3.8–4.0 | 2.6–3.3 | 250 °C |
| Y30BH | 3.9–4.1 | 2.9–3.3 | 250 °C |
| Y35 | 4.0–4.3 | 2.5–3.1 | 250 °C |
Values are typical published ranges for selection guidance, not a substitute for the production datasheet. SmCo and AlNiCo quoted on request.