Demagnetization (B-H) curves for sintered NdFeB show how magnetic flux density and intrinsic induction behave under external demagnetizing fields, at different temperatures and for each grade series.
We can supply the full B-H and J-H curve data for any grade we produce, which our engineers use to model the performance of your magnet in the final assembly.
Key Specifications
| Specification | Value |
|---|---|
| Curve types | Demagnetization B-H, intrinsic J-H |
| Temperature points | 20, 60, 80, 100, 120, 150, 180, 200 °C |
| Load line guidance | Recommended permeance coefficient ≥ 0.5 for N, ≥ 1 for UH/EH |
| Data format | PDF chart or tabulated CSV on request |
All magnets are produced to order. Please provide grade, dimension (or drawing), magnetization direction, coating and quantity for quotation. Email sales@polemagnet.com or use the inquiry form — we reply within 24 hours.
FAQ
Sintered NdFeB Demagnetization Curves — FAQ
What is the permeance coefficient and why is it important?
The permeance coefficient (PC) is the ratio of flux in the magnet to the demagnetizing field. A higher PC keeps the working point stable; very low PC designs risk irreversible demagnetization, so we verify the working point on the B-H curve during design.
Can you provide curve data for simulation software?
Yes, we can provide B-H data in tabulated form suitable for FEM tools such as ANSYS or COMSOL.
Do you provide free samples for testing?
Yes, sample orders are welcome. Send your drawing or specification together with the intended application so our engineers can recommend the correct grade, magnetization direction and coating before we prepare samples.
Can the factory produce to my drawing with special tolerances?
Yes. We machine, grind and inspect to customer drawing tolerances. For sintered NdFeB the standard machining tolerance is ±0.05 mm and can be tightened to ±0.02 mm with diamond grinding where the geometry allows.
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Send your drawing, grade, magnetization direction and quantity. Our engineers will reply with a quotation within 24 hours.