Black Circular Rare Earth Neodymium Magnets Set

Brand: magnet forever

Product origin: china

Delivery time: 35 days

Supply capacity: 120T/month

The black surface of the Neodymium Magnets is coated with epoxy resin, which has stronger anti-corrosion ability and better protects the magnet from damage.

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Magnet Technical Parameter Catalog.pdf

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Black Circular Rare Earth Neodymium Magnets Set

Overview of Black Circular Rare Earth Neodymium Magnets Set

Black Circular Rare Earth Neodymium Magnets Set, namely NdFeB magnets, get their name from being composed of neodymium, iron, and boron. Their appearance is usually disc - shaped. The black coating not only adds a unique visual effect but also effectively prevents corrosion. As rare earth magnets, it is because their components contain rare earth elements. There are seventeen such elements in the periodic table, and they have similar chemical properties.

Characteristics

Super - strong Magnetism: They rank among the top in magnetic strength among permanent magnets and can generate a powerful magnetic field, meeting the needs of many scenarios with strict magnetic requirements.

Diverse Specifications: They come in a rich variety of sizes, with diameters ranging from a few millimeters to dozens of centimeters, and thicknesses also varying. The magnetic strength can be divided into multiple grades according to different formulas and processes to adapt to various applications.

Application Fields

Industrial Manufacturing: In the motor field, they are used to improve the efficiency and performance of motors and are widely applied in electric vehicle drive motors, motors of industrial automation equipment, etc. In machining, they can be used as magnetic fixtures to firmly adsorb workpieces and ensure machining accuracy.

Electronics and Technology: They are key components in electronic products such as hard disk drives, speakers, and headphones, helping to achieve efficient data storage and high - quality audio output.

Medical and Healthcare: They play a core role in magnetic resonance imaging (MRI) devices, providing clear and accurate images for medical diagnosis. Magnetic therapy products also use their magnetism to stimulate human acupoints and promote blood circulation.

Daily Life: They are commonly found in jewelry clasps, providing a convenient and secure opening and closing method. In some DIY handicraft projects, they are used to make creative magnetic decorations, magnetic puzzles, etc.

Purchase Key Points

Precise Selection: Based on the actual usage scenario, clarify the required size, strength, and quantity. For example, small electronic products may only need magnets with a diameter of a few millimeters and low strength; large - scale industrial equipment requires large - sized and high - strength products.

Quality Consideration: Choose reputable suppliers. The products should have good magnetic performance stability, firmness of the surface coating, and dimensional accuracy. You can refer to product quality certifications, customer reviews, etc.

Market Prices

Prices fluctuate due to factors such as size, strength, brand, and market supply and demand. Generally, a single small - sized, low - strength magnet may cost a few yuan; for large - sized, high - strength products, the unit price can reach dozens of yuan or even higher. Bulk purchases usually enjoy certain price discounts.

Safety Precautions

Risk of Physical Injury: Due to their strong magnetism, when they approach each other, they will attract with great force, easily pinching fingers, wrists, and other parts. When operating, be sure to wear protective gloves and use tools to assist in handling.

Interference with Electronic Devices: When approaching electronic devices such as mobile phones, computers, and bank cards, they may interfere with their normal operation, resulting in data loss and device failures. A safe distance needs to be maintained.

In conclusion, black circular rare earth neodymium magnets play an important role in many fields with their unique properties. Only by doing a good job in selection and safety protection during purchase and use can their advantages be fully utilized.

The Coating for Black Circular Rare Earth Neodymium Magnets Set:

Product Parameters:

Grade:N35-N58,- M - H - SH - UH - EH-AH.

Br:11.7-16 KGS

Hcj:12-30 KOe

(BH)Max:33-60 MGOe

Operating temperature:-60-220 °C

Flat Neodymium Magnets are all graded by the material they are made of. As a very general rule, the higher the grade (the number following the 'N'), the stronger the magnet. The highest grade of neodymium magnet currently available is N58. Any letter following the grade refers to the temperature rating of the magnet. If there are no letters following the grade, then the magnet

is standard temperature neodymium. The temperature ratings are standard (no designation) - M - H - SH - UH - EH-AH.

Sintered NdFeB Magnets Magnetic Properties

Grade	Br		Hcb		Hcj		(BH)max				WT
	kGs		kOe	kA/m	kOe	kA/m	MGOe		KJ/m³		℃
	Min	Max	≥	≥	≥	≥	Min	Max	Min	Max	≤
N35	11.7	12.2	10.9	868	12	955	33	36	263	287	80
N38	12.2	12.5	11.4	907	12	955	36	38	287	302	80
N40	12.5	12.8	11.4	907	12	955	38	40	302	318	80
N42	12.8	13.2	11.5	915	12	955	40	43	318	342	80
N45	13.2	13.8	11.6	923	12	955	43	46	342	366	80
N48	13.8	14.2	11.6	923	12	955	46	49	366	390	80
N50	14	14.5	10	796	11	876	48	51	382	406	80
N52	14.3	14.8	10	796	11	876	50	53	398	422	80
35M	11.7	12.2	10.9	868	14	1114	33	36	263	287	100
38M	12.2	12.5	11.3	899	14	1114	36	38	287	302	100
40M	12.5	12.8	11.6	923	14	1114	38	40	302	318	100
42M	12.8	13.2	12	955	14	1114	40	43	318	342	100
45M	13.2	13.8	12.5	995	14	1114	43	46	342	366	100
48M	13.6	14	12.8	1019	14	1114	45	48	358	382	100
50M	14	14.5	13.1	1043	14	1114	48	51	382	406	100
35H	11.7	12.2	10.9	868	17	1353	33	36	263	287	120
38H	12.2	12.5	11.4	907	17	1353	36	38	287	302	120
40H	12.5	12.8	11.6	923	17	1353	38	40	302	318	120
42H	12.8	13.2	12	955	17	1353	40	43	318	342	120
45H	13.2	13.6	12.1	963	17	1353	43	46	342	358	120
48H	13.6	14	12.8	1019	16	1274	45	48	358	382	120
35SH	11.7	12.2	11	876	20	1592	33	36	263	287	150
38SH	12.2	12.5	11.4	907	20	1592	36	38	287	302	150
40SH	12.5	12.8	11.8	939	20	1592	38	40	302	318	150
42SH	12.8	13.2	12.2	971	20	1592	40	43	318	342	150
45SH	13.2	13.8	12.3	979	20	1592	43	46	342	366	150
30UH	10.8	11.4	10.1	804	25	1990	28	31	223	247	180
33UH	11.4	12.1	10.7	852	25	1990	31	35	247	279	180
35UH	11.7	12.2	11	876	25	1990	33	36	263	287	180
38UH	12.2	12.5	11.4	907	25	1990	36	38	287	302	180
40UH	12.5	12.8	11.8	939	25	1990	38	40	302	318	180
30EH	10.8	11.4	10.1	804	30	2388	28	31	223	247	200
33EH	11.4	12.1	10.7	852	30	2388	31	35	247	279	200
35EH	11.7	12.2	11	876	30	2388	33	36	263	287	200
38EH	12.2	12.5	11.4	907	30	2388	36	38	287	302	200
30AH	10.8	11.4	10.1	804	35	2786	28	31	223	247	220
33A	11.4	12.1	10.7	852	35	2786	31	35	247	279	220
▅ Unit Conversion: 1kGs=0.1T,1kOe=79.6kA/m,1MGOe=7.96kJ/m³