Ferrite Rubber Magnet
铁氧体橡胶磁体
Ferrite rubber magnets are flexible bonded permanent-magnet sheets produced by blending ferrite (strontium / barium) magnetic powder with rubber or plastic binders and processing additives, then calendering or extruding the mix into anisotropic or isotropic sheets.
The sheets are subsequently cut, stamped, or die-cut into strips, discs, rings, and complex custom shapes. The material is soft, flexible, impact-resistant, and will not shatter; it can be laminated with adhesive, PVC, paper, or printed films and machined without special tooling.
Although its magnetic energy product is lower than that of rare-earth magnets, the low cost, excellent corrosion resistance, stable performance, and processability make it the material of choice for high-volume, cost-sensitive applications such as refrigerator door gaskets, micro-motors, magnetic signage, educational magnets, and holding devices.
Key Features
Flexible & Impact-Resistant
Soft, bendable, and shatter-proof — conforms to curved surfaces and survives bending without cracking.
Any Shape or Size
Easily cut, stamped, or die-cut into strips, discs, rings, and complex custom geometries.
Cost-Effective
Ferrite powder + rubber binder keeps material cost low for high-volume production runs.
Corrosion-Resistant
Excellent chemical and corrosion resistance with stable performance — no coating required.
Surface Lamination
Accepts adhesive, PVC, paper, or printed film laminations for ready-to-use finished parts.
Easy to Magnetize
Supports single-pole, multi-pole, and custom magnetization patterns on request.
Performance Data
Typical values at room temperature.
| Grade | Br (mT) | Hcb (kA/m) | Hcj (kA/m) | (BH)max (kJ/m³) | Density (g/cm³) | Tw (°C) |
|---|---|---|---|---|---|---|
| YN4T | 135–155 | 85–105 | 175–210 | 3.2–4.5 | 3.8 | <80 |
| YN10 | 220–240 | 145–165 | 190–255 | 9.2–10.6 | 3.4 | <80 |
| YN11 | 230–250 | 160–185 | 225–260 | 10.0–12.0 | 3.5 | <80 |
| YN13 | 250–270 | 175–195 | 200–230 | 11.5–14.5 | 3.6 | <80 |
| YN15 | ≥270 | 175–190 | 200–230 | ≥14.5 | 3.7 | <80 |
| YN18 | 290–320 | 155–200 | 160–210 | 16.0–20.0 | 3.7 | <80 |
Material Composition
Production Process
From ferrite powder and binder to a cut, magnetized, inspected finished part.
Powder & Binder Mixing
Ferrite powder blended with rubber/plastic binder and additives.
Calendering / Extrusion
Compound rolled or extruded into anisotropic or isotropic sheets.
Magnetizing
Sheets magnetized with single-pole, multi-pole, or custom patterns.
Cutting / Die-cutting
Sheets cut, stamped, or die-cut into the required shapes and sizes.
Lamination
Adhesive, PVC, paper, or printed film applied as needed.
QC & Packing
Inspection and packaging for shipment.
Custom Shapes & Flexibility
The sheet form factor makes ferrite rubber magnets exceptionally processable. They can be cut into strips, discs, rings, and complex custom shapes, and bent to conform to curved surfaces — ideal for gaskets, labels, and integration into assembled products.
Typical Applications
Product Manual
Ferrite Rubber Magnet Product Manualferrite-rubber-magnet.pdfDownload PDFNeed a Custom Shape?
We can tailor grade (YN4T–YN18), thickness, dimensions, magnetization pattern, and surface lamination to your application — contact our engineering team for samples and DFM support.
Discuss Custom Requirements