# Neodymium magnets, made to your size

The strongest permanent magnets you can buy. Pick the grade for strength and working temperature; we supply the shape and coating you need.

## Specification

- **Shapes:** Cylinder, block, ring; other shapes to your drawing
- **Grades:** N35–N52, M, H, SH, UH and EH series (table)
- **Max working temp:** 80 °C (N) up to 200 °C (EH)
- **Coating:** Contact for spec
- **Tolerance:** Contact for spec
- **More detail:** See also NdFeB page and SmCo for higher temperatures

### NdFeB grade properties

Typical values. Br remanence, Hcb coercivity, Hcj intrinsic coercivity, (BH)max energy product.

| Grade | Br (kGs) | Br (T) | Hcb (kOe) | Hcj (kOe) | (BH)max (MGOe) | Max temp (°C) |
|---|---|---|---|---|---|---|
| N35 | 11.7–12.1 | 1.17–1.21 | 11.0–11.5 | 12 | 33–35 | 80 |
| N38 | 12.2–12.6 | 1.22–1.26 | 11.0–11.6 | 12 | 36–38 | 80 |
| N40 | 12.6–12.9 | 1.26–1.29 | 11.0–11.6 | 12 | 36–38 | 80 |
| N42 | 13.0–13.3 | 1.30–1.33 | 11.0–11.6 | 12 | 40–42 | 80 |
| N45 | 13.3–13.7 | 1.33–1.37 | 11.0–11.6 | 12 | 43–45 | 80 |
| N48 | 13.6–14.2 | 1.36–1.42 | 11.0–11.6 | 12 | 45–48 | 80 |
| N50 | 14.1–14.5 | 1.41–1.45 | 11.0–11.4 | 11 | 48–50 | 70 |
| N52 | 14.4–14.8 | 1.44–1.48 | 10.5–11.4 | 11 | 49.5–52 | 70 |
| N35M | 11.7–12.1 | 1.17–1.21 | 11.2–11.5 | 14 | 33–35 | 100 |
| N38M | 12.2–12.6 | 1.22–1.26 | 11.4–11.7 | 14 | 36–38 | 100 |
| N42M | 13.0–13.3 | 1.30–1.33 | 11.4–11.9 | 14 | 40–42 | 100 |
| N48M | 13.7–14.3 | 1.37–1.43 | 11.4–12.0 | 14 | 45–48 | 100 |
| N35H | 11.7–12.1 | 1.17–1.21 | 10.8–11.4 | 17 | 33–35 | 120 |
| N40H | 12.6–12.9 | 1.26–1.29 | 11.4–11.9 | 17 | 38–40 | 120 |
| N44H | 13.0–13.6 | 1.33–1.36 | 11.4–11.9 | 16 | 42–44 | 120 |
| N35SH | 11.7–12.1 | 1.17–1.21 | 10.8–11.4 | 20 | 33–35 | 150 |
| N40SH | 12.6–12.9 | 1.26–1.29 | 11.4–11.9 | 20 | 38–40 | 150 |
| N42SH | 13.0–13.3 | 1.30–1.33 | 11.4–11.9 | 19 | 40–42 | 140 |
| N30UH | 10.8–11.2 | 1.08–1.12 | 10.1–10.6 | 25 | 28–30 | 180 |
| N35UH | 11.7–12.1 | 1.17–1.21 | 10.8–11.4 | 25 | 33–35 | 180 |
| N30EH | 10.8–11.2 | 1.08–1.12 | 10.1–10.6 | 30 | 28–30 | 200 |
| N35EH | 11.7–12.1 | 1.17–1.21 | 10.8–11.4 | 30 | 33–35 | 200 |

## FAQ

**Is neodymium the same as NdFeB?** Yes. NdFeB (neodymium-iron-boron) is the material; people search for it as neodymium or rare-earth magnets.
**Which grade should I choose?** Higher numbers are stronger. The letter sets the temperature: N up to 80 °C, M 100 °C, H 120 °C, SH 150 °C, UH 180 °C, EH 200 °C.
**Above 200 °C?** Use SmCo (samarium cobalt). See our SmCo page.
**Can you make a custom size?** Yes. Send a drawing or the dimensions, grade, coating and quantity.
**What coating do you use?** Coating depends on the job. Tell us the environment and we will confirm the coating at quotation.
**Are they safe to handle?** Large neodymium magnets snap together hard and can pinch fingers or crack. Handle with care and keep them away from pacemakers and electronics.

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