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Soft Magnet/Rubber Magnet

Rubber magnets, also known as flexible magnets or magnetic rubber, are composite materials made by blending ferrite magnetic powder (e.g., SrO·6Fe₂O₃) with synthetic rubber or plastic binders (e.g., chlorinated polyethylene, CPE) through extrusion, calendering, or injection molding. They exhibit softness, elasticity, and twistability, allowing them to be easily cut, punched, or laminated with adhesives or PVC coatings. Unlike rigid magnets, rubber magnets are lightweight, corrosion-resistant, and ideal for low-energy applications, with magnetic induction typically ranging from 100–600 Gauss (GS). They are widely used in advertising, automotive, electronics, and household products due to their versatility and cost-effectiveness.

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Overview

Product Specifications

Material Composition: Ferrite powder (SrO·6Fe₂O₃) + rubber/plastic binders (e.g., CPE) + additives (EBSO, DOP)

Shapes: Sheets, rolls, strips, blocks, rings (max. width: 900 mm; thickness: 0.2–10 mm)

Magnetic Properties:

Residual Induction (Br): 1,400–2,600 GS (e.g., YN-5T to YN-15 grades)

Coercive Force (HcB): 90–215 kA/m

Energy Product (BH)max: 0.5–1.6 MGOe (4.0–12.8 kJ/m³)

Operating Temperature: Up to 80°C (standard grades)

Physical Properties:

Hardness: 30–45 (Shore A scale)

Tensile Strength: 25–35 MPa; Elongation at Break: 20–50%

Product Grades

Rubber magnets are classified into isotropic (uniform magnetic properties) and anisotropic (directional magnetization, higher strength) types. Common grades include:

Isotropic: YN-5T (1,400–1,550 GS), YN-8 (1,600–1,850 GS) — used for fridge magnets, promotional items

Anisotropic: YN-10 (2,000–2,100 GS), YN-15 (2,600 GS) — suited for micro-motors, printers, and automotive sensors

Custom Grades: Adhesive-backed variants (e.g., Y10-Y30) with multi-pole magnetization for industrial applications

Applications

Rubber magnets are utilized across diverse sectors:

Advertising & Consumer Goods: Refrigerator magnets, signage, magnetic toys

Automotive: Door seals, sensor mounts, EV components (weight reduction)

Electronics: Flexible displays, magnetic strips for devices

Industrial: Micro-motors, sealing strips, magnetic holders

Healthcare: MRI seals, wheelchair accessories

Packaging Information

Standard Packaging: Cartons, rolls (e.g., 61 cm/91 cm/122 cm width), or pallets for bulk orders

Special Handling: Vacuum-sealed or argon-packed for hygroscopic materials

Shipping: Air/sea freight; lead time 7–15 days for custom orders

FAQs

1. Are rubber magnets strong?

They are weaker than neodymium magnets but offer flexibility and cost savings for low-power uses

2. Can they withstand high temperatures?

Standard grades operate up to 80°C; specialized versions may tolerate higher temps

3. Are they customizable?

Yes, shapes, sizes, and adhesive backing can be tailored

4 .Do they corrode?

No, their ferrite composition resists rust and humidity

5.Lead time for samples?

Free samples available; production takes 7+ days for non-stock size?

Application

Manufacturing

The manufacturing and industrial sectors utilize magnets in many ways. Magnetic separators are widely used to remove metal contaminants from raw materials in mining, food processing, and recycling industries. In automated manufacturing processes, magnetic grippers are employed to handle...
Electronics

In the electronics industry, magnets are essential components. Hard disk drives (HDDs) use tiny but powerful magnets to read and write data. The magnetic heads in HDDs can detect the magnetic fields representing digital information on the spinning disks. Speakers, whether in headphones...
Healthcare

The healthcare industry also benefits greatly from magnets. Magnetic Resonance Imaging (MRI) is one of the most significant medical applications. MRI machines use strong magnetic fields to generate detailed images of the inside of the human body. By aligning the protons in the body's tissues and detecting...
Automotive

In the automotive industry, magnets play a crucial role. Electric and hybrid vehicles rely on powerful magnets in their electric motors. These magnets enable the conversion of electrical energy into mechanical energy, which drives the vehicle. The use of high - performance magnets...