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MP 8x6/3.5x3 / N38 - ring magnet

Name: Dhit sp. z o.o.
Address: Kościuszki 6A, Ożarów Mazowiecki, Poland, 05-850, PL
Telephone: +48 22 499 98 98
Price range: PLN 1-6500
Rating: 5

ring magnet

Catalog no 030206

GTIN/EAN: 5906301812234

5.00

Diameter

8 mm [±0,1 mm]

internal diameter Ø

6/3.5 mm [±0,1 mm]

Height

3 mm [±0,1 mm]

Weight

0.91 g

Magnetization Direction

↑ axial

Load capacity

1.37 kg / 13.48 N

Magnetic Induction

371.53 mT / 3715 Gs

Coating

[NiCuNi] Nickel

view technical data »

0.701 ZŁ with VAT / pcs + price for transport

0.570 ZŁ net + 23% VAT / pcs

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Physical properties - MP 8x6/3.5x3 / N38 - ring magnet

Specification / characteristics - MP 8x6/3.5x3 / N38 - ring magnet

properties

properties	values
Cat. no.	030206
GTIN/EAN	5906301812234
Production/Distribution	Dhit sp. z o.o. ul. Zielona 14 05-850 Ożarów Mazowiecki PL
Country of origin	Poland / China / Germany
Customs code	85059029
Diameter	8 mm [±0,1 mm]
internal diameter Ø	6/3.5 mm [±0,1 mm]
Height	3 mm [±0,1 mm]
Weight	0.91 g
Magnetization Direction	↑ axial
Load capacity ~ ?	1.37 kg / 13.48 N
Magnetic Induction ~ ?	371.53 mT / 3715 Gs
Coating	[NiCuNi] Nickel
Manufacturing Tolerance	±0.1 mm

Magnetic properties of material N38

Specification / characteristics MP 8x6/3.5x3 / N38 - ring magnet

properties	values	units
remenance Br [min. - max.] ?	12.2-12.6	kGs
remenance Br [min. - max.] ?	1220-1260	mT
coercivity bHc ?	10.8-11.5	kOe
coercivity bHc ?	860-915	kA/m
actual internal force iHc	≥ 12	kOe
actual internal force iHc	≥ 955	kA/m
energy density [min. - max.] ?	36-38	BH max MGOe
energy density [min. - max.] ?	287-303	BH max KJ/m
max. temperature ?	≤ 80	°C

Physical properties of sintered neodymium magnets Nd₂Fe₁₄B at 20°C

properties	values	units
Vickers hardness	≥550	Hv
Density	≥7.4	g/cm³
Curie Temperature TC	312 - 380	°C
Curie Temperature TF	593 - 716	°F
Specific resistance	150	μΩ⋅cm
Bending strength	250	MPa
Compressive strength	1000~1100	MPa
Thermal expansion parallel (∥) to orientation (M)	(3-4) x 10^-6	°C^-1
Thermal expansion perpendicular (⊥) to orientation (M)	-(1-3) x 10^-6	°C^-1
Young's modulus	1.7 x 10⁴	kg/mm²

Technical analysis of the magnet - technical parameters

These information represent the result of a mathematical analysis. Values are based on algorithms for the material Nd₂Fe₁₄B. Real-world conditions may differ from theoretical values. Treat these calculations as a supplementary guide during assembly planning.

Table 1: Static pull force (force vs distance) - characteristics
MP 8x6/3.5x3 / N38

Distance (mm)	Induction (Gauss) / mT	Pull Force (kg/lbs/g/N)	Risk Status
0 mm	3327 Gs 332.7 mT	1.37 kg / 3.02 lbs 1370.0 g / 13.4 N	weak grip
1 mm	2612 Gs 261.2 mT	0.84 kg / 1.86 lbs 844.4 g / 8.3 N	weak grip
2 mm	1884 Gs 188.4 mT	0.44 kg / 0.97 lbs 439.3 g / 4.3 N	weak grip
3 mm	1310 Gs 131.0 mT	0.21 kg / 0.47 lbs 212.4 g / 2.1 N	weak grip
5 mm	637 Gs 63.7 mT	0.05 kg / 0.11 lbs 50.3 g / 0.5 N	weak grip
10 mm	151 Gs 15.1 mT	0.00 kg / 0.01 lbs 2.8 g / 0.0 N	weak grip
15 mm	54 Gs 5.4 mT	0.00 kg / 0.00 lbs 0.4 g / 0.0 N	weak grip
20 mm	25 Gs 2.5 mT	0.00 kg / 0.00 lbs 0.1 g / 0.0 N	weak grip
30 mm	8 Gs 0.8 mT	0.00 kg / 0.00 lbs 0.0 g / 0.0 N	weak grip
50 mm	2 Gs 0.2 mT	0.00 kg / 0.00 lbs 0.0 g / 0.0 N	weak grip

Pulling power decreases drastically with every mm of distance. Remember that even a very thin break (e.g., contamination, varnish, dust) noticeably reduces the pull force. Neodymiums operate most effectively during direct contact; distance weakens the force. See how flashily the pull force plummet, when the magnet does not touch flatly to the steel surface. When designing the mounting, discard additional spacers.

Table 2: Shear hold (wall)
MP 8x6/3.5x3 / N38

Distance (mm)	Friction coefficient	Pull Force (kg/lbs/g/N)
0 mm	Stal (~0.2)	0.27 kg / 0.60 lbs 274.0 g / 2.7 N
1 mm	Stal (~0.2)	0.17 kg / 0.37 lbs 168.0 g / 1.6 N
2 mm	Stal (~0.2)	0.09 kg / 0.19 lbs 88.0 g / 0.9 N
3 mm	Stal (~0.2)	0.04 kg / 0.09 lbs 42.0 g / 0.4 N
5 mm	Stal (~0.2)	0.01 kg / 0.02 lbs 10.0 g / 0.1 N
10 mm	Stal (~0.2)	0.00 kg / 0.00 lbs 0.0 g / 0.0 N
15 mm	Stal (~0.2)	0.00 kg / 0.00 lbs 0.0 g / 0.0 N
20 mm	Stal (~0.2)	0.00 kg / 0.00 lbs 0.0 g / 0.0 N
30 mm	Stal (~0.2)	0.00 kg / 0.00 lbs 0.0 g / 0.0 N
50 mm	Stal (~0.2)	0.00 kg / 0.00 lbs 0.0 g / 0.0 N

The following data shows the approximate force sufficient to start the sliding of the magnet downwards against a upright metal surface (assuming standard friction). This parameter is a function of the air gap between the magnet and the surface.

Table 3: Wall mounting (sliding) - behavior on slippery surfaces
MP 8x6/3.5x3 / N38

Surface type	Friction coefficient / % Mocy	Max load (kg/lbs/g/N)
Raw steel	µ = 0.3 30% Nominalnej Siły	0.41 kg / 0.91 lbs 411.0 g / 4.0 N
Painted steel (standard)	µ = 0.2 20% Nominalnej Siły	0.27 kg / 0.60 lbs 274.0 g / 2.7 N
Oily/slippery steel	µ = 0.1 10% Nominalnej Siły	0.14 kg / 0.30 lbs 137.0 g / 1.3 N
Magnet with anti-slip rubber	µ = 0.5 50% Nominalnej Siły	0.69 kg / 1.51 lbs 685.0 g / 6.7 N

When placing a element on a vertical wall (e.g., a fridge), it you can count on only approx. 1/5 of its maximum pull force. Gravitational force as well as a weak degree of grip mean that products move down easier than they detach. Want to create a wall mount? Remember that the sliding force is noticeably lower than the maximum static pull force. On a painted metal, the element will slide down under a noticeably lighter load. Using a rubber pad can significantly improve the result.

Table 4: Material efficiency (substrate influence) - sheet metal selection
MP 8x6/3.5x3 / N38

Steel thickness (mm)	% power	Real pull force (kg/lbs/g/N)
0.5 mm	10%	0.14 kg / 0.30 lbs 137.0 g / 1.3 N
1 mm	25%	0.34 kg / 0.76 lbs 342.5 g / 3.4 N
2 mm	50%	0.69 kg / 1.51 lbs 685.0 g / 6.7 N
3 mm	75%	1.03 kg / 2.27 lbs 1027.5 g / 10.1 N
5 mm	100%	1.37 kg / 3.02 lbs 1370.0 g / 13.4 N
10 mm	100%	1.37 kg / 3.02 lbs 1370.0 g / 13.4 N
11 mm	100%	1.37 kg / 3.02 lbs 1370.0 g / 13.4 N
12 mm	100%	1.37 kg / 3.02 lbs 1370.0 g / 13.4 N

A thin sheet is not enough to absorb the entire magnetic field, which wastes potential of the holder. Should you attach a powerful product to a weak sheet, the magnetism will pass right through and the pull force will drop sharply. To squeeze 100% of this magnet's potential, you require a sufficiently solid piece of steel. The saturation effect means that on delicate walls (e.g., appliance housings), the product holds weaker. We recommend selecting the steel cross-section from these parameters.

Table 5: Working in heat (stability) - power drop
MP 8x6/3.5x3 / N38

Ambient temp. (°C)	Power loss	Remaining pull (kg/lbs/g/N)	Status
20 °C	0.0%	1.37 kg / 3.02 lbs 1370.0 g / 13.4 N	OK
40 °C	-2.2%	1.34 kg / 2.95 lbs 1339.9 g / 13.1 N	OK
60 °C	-4.4%	1.31 kg / 2.89 lbs 1309.7 g / 12.8 N
80 °C	-6.6%	1.28 kg / 2.82 lbs 1279.6 g / 12.6 N
100 °C	-28.8%	0.98 kg / 2.15 lbs 975.4 g / 9.6 N

Standard neodymium magnets change their properties strength above the temperature limit. Avoid high temperatures – excessive heat can irreversibly demagnetize this magnet. With increasing heat, the magnet's capacity momentarily decreases. Avoid using this magnet in hot environments higher than its operating temperature limit. Exceeding the critical threshold will lead to destruction of magnetic properties.

*Engineering note: Thermal stability is determined by both grade, and the Permeance Coefficient Pc. Low-profile magnets (pancake types) are more susceptible to demagnetization at lower temperatures than taller cylinders. The danger warning in the table signals a risk of irreversible loss for this specific geometry.

Table 6: Two magnets (attraction) - field collision
MP 8x6/3.5x3 / N38

Gap (mm)	Attraction (kg/lbs) (N-S)	Sliding Force (kg/lbs/g/N)	Repulsion (kg/lbs) (N-N)
0 mm	2.36 kg / 5.20 lbs 4 867 Gs	0.35 kg / 0.78 lbs 354 g / 3.5 N	N/A
1 mm	1.90 kg / 4.20 lbs 5 981 Gs	0.29 kg / 0.63 lbs 286 g / 2.8 N	1.71 kg / 3.78 lbs ~0 Gs
2 mm	1.45 kg / 3.20 lbs 5 223 Gs	0.22 kg / 0.48 lbs 218 g / 2.1 N	1.31 kg / 2.88 lbs ~0 Gs
3 mm	1.06 kg / 2.34 lbs 4 468 Gs	0.16 kg / 0.35 lbs 159 g / 1.6 N	0.96 kg / 2.11 lbs ~0 Gs
5 mm	0.53 kg / 1.16 lbs 3 148 Gs	0.08 kg / 0.17 lbs 79 g / 0.8 N	0.47 kg / 1.05 lbs ~0 Gs
10 mm	0.09 kg / 0.19 lbs 1 274 Gs	0.01 kg / 0.03 lbs 13 g / 0.1 N	0.08 kg / 0.17 lbs ~0 Gs
20 mm	0.00 kg / 0.01 lbs 301 Gs	0.00 kg / 0.00 lbs 1 g / 0.0 N	0.00 kg / 0.00 lbs ~0 Gs
50 mm	0.00 kg / 0.00 lbs 27 Gs	0.00 kg / 0.00 lbs 0 g / 0.0 N	0.00 kg / 0.00 lbs ~0 Gs
60 mm	0.00 kg / 0.00 lbs 16 Gs	0.00 kg / 0.00 lbs 0 g / 0.0 N	0.00 kg / 0.00 lbs ~0 Gs
70 mm	0.00 kg / 0.00 lbs 10 Gs	0.00 kg / 0.00 lbs 0 g / 0.0 N	0.00 kg / 0.00 lbs ~0 Gs
80 mm	0.00 kg / 0.00 lbs 7 Gs	0.00 kg / 0.00 lbs 0 g / 0.0 N	0.00 kg / 0.00 lbs ~0 Gs
90 mm	0.00 kg / 0.00 lbs 5 Gs	0.00 kg / 0.00 lbs 0 g / 0.0 N	0.00 kg / 0.00 lbs ~0 Gs
100 mm	0.00 kg / 0.00 lbs 4 Gs	0.00 kg / 0.00 lbs 0 g / 0.0 N	0.00 kg / 0.00 lbs ~0 Gs

Two magnets interact from a much further distance than a magnet and sheet setup. The setup of two magnets produces a massive flux and a larger range of performance. Want to build a powerful holder? Apply two magnets instead of one magnet and a steel. Be careful that when bringing together two magnets, the collision energy is extreme. The repulsion force is a bit weaker than the connection force, but still large.
*The magnetic induction for N-N configuration is approximately ~0 Gs in the exact middle between the magnets (due to field cancellation).
Attention: Estimates demonstrate sliding force of a pair of matching magnets (friction coefficient ~0.15 for Ni-Ni coating).

Table 7: Hazards (implants) - precautionary measures
MP 8x6/3.5x3 / N38

Object / Device	Limit (Gauss) / mT	Safe distance
Pacemaker	5 Gs (0.5 mT)	4.0 cm
Hearing aid	10 Gs (1.0 mT)	3.0 cm
Timepiece	20 Gs (2.0 mT)	2.5 cm
Phone / Smartphone	40 Gs (4.0 mT)	2.0 cm
Remote	50 Gs (5.0 mT)	2.0 cm
Payment card	400 Gs (40.0 mT)	1.0 cm
HDD hard drive	600 Gs (60.0 mT)	1.0 cm

Powerful magnet radiation poses a large risk to IT equipment and pacemakers. These magnets generate a flux that prevents correct functioning of sensitive medical devices. Be aware: the invisible magnetic field acts through matter and plastic. Increased vigilance must be taken by people with hearing aids and insulin pumps. Also at risk are: mechanical watches, remotes, membranes, and screens. Avoid contact with magnetic cards, hard drives, or sensitive navigation tools.

Table 8: Impact energy (cracking risk) - warning
MP 8x6/3.5x3 / N38

Start from (mm)	Speed (km/h)	Energy (J)
10 mm	39.18 km/h (10.88 m/s)	0.05 J
30 mm	67.78 km/h (18.83 m/s)	0.16 J
50 mm	87.50 km/h (24.31 m/s)	0.27 J
100 mm	123.74 km/h (34.37 m/s)	0.54 J

Magnetic elements are very brittle – a strong collision with metal risks their cracking. Pay attention to connection velocity – a magnet released freely speeds with massive force. Impact energy can cause material chips or dangerous crushing to skin. Always hold the magnet during mounting so it doesn't hit with great force against the metal. A collision at high speed almost guarantees destruction of the magnet. Wear eye protection when handling with large magnets.

Table 9: Corrosion resistance
MP 8x6/3.5x3 / N38

Technical parameter	Value / Description
Coating type	[NiCuNi] Nickel
Layer structure	Nickel - Copper - Nickel
Layer thickness	10-20 µm
Salt spray test (SST) ?	24 h
Recommended environment	Indoors only (dry)

For outdoor applications, an epoxy coating is required; standard nickel is intended for indoor use. The silver nickel coating also serves an aesthetic function but is not fully waterproof.

Table 10: Electrical data (P_c)
MP 8x6/3.5x3 / N38

Parameter	Value	SI Unit / Description
Magnetic Flux	1 299 Mx	13.0 µWb
P_c Coefficient	0.46	Low (Flat)

Flux value passing through the pole surface. Essential parameter in coil applications and motors. The P_c coefficient defines the magnet's operating point.

Table 11: Physics of underwater searching
MP 8x6/3.5x3 / N38

Environment	Effective steel pull	Effect
Air (land)	1.37 kg	Standard
Water (riverbed)	1.57 kg (+0.20 kg buoyancy gain)	+14.5%

Warning: Remember to wipe the magnet thoroughly after removing it from water and apply a protective layer (e.g., oil) to avoid corrosion.

Water displaces steel, making heavy objects slightly lighter. Note: for permanent underwater work, we recommend magnets with an anti-corrosive (epoxy) coating.

1. Wall mount (shear)

*Note: On a vertical wall, the magnet retains merely a fraction of its perpendicular strength.

2. Steel thickness impact

*Thin metal sheet (e.g. computer case) drastically reduces the holding force.

3. Temperature resistance

*For standard magnets, the critical limit is 80°C.

4. Demagnetization curve and operating point (B-H)

chart generated for the permeance coefficient P_c (Permeance Coefficient) = 0.46

This simulation demonstrates the magnetic stability of the selected magnet under specific geometric conditions. The solid red line represents the demagnetization curve (material potential), while the dashed blue line is the load line based on the magnet's geometry. The P_c (Permeance Coefficient), also known as the load line slope, is a dimensionless value that describes the relationship between the magnet's shape and its magnetic stability. The intersection of these two lines (the black dot) is the operating point — it determines the actual magnetic flux density generated by the magnet in this specific configuration. A higher P_c value means the magnet is more 'slender' (tall relative to its area), resulting in a higher operating point and better resistance to irreversible demagnetization caused by external fields or temperature. A value of 0.42 is relatively low (typical for flat magnets), meaning the operating point is closer to the 'knee' of the curve — caution is advised when operating at temperatures near the maximum limit to avoid strength loss.

Engineering data and GPSR

Chemical composition

iron (Fe)	64% – 68%
neodymium (Nd)	29% – 32%
boron (B)	1.1% – 1.2%
dysprosium (Dy)	0.5% – 2.0%
coating (Ni-Cu-Ni)	< 0.05%

Ecology and recycling (GPSR)

recyclability (EoL)	100%
recycled raw materials	~10% (pre-cons)
carbon footprint	low / zredukowany
waste code (EWC)	16 02 16

Safety card (GPSR)

responsible entity

Dhit sp. z o.o.

ul. Kościuszki 6A, 05-850 Ożarów Mazowiecki

tel: +48 22 499 98 98 | e-mail: bok@dhit.pl

batch number/type

id: 030206-2026

Measurement Calculator

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MP 41x15x10 / N38 - ring magnet

50.00 ZŁ brutto / pcs

Product available Ships today (order by 14:00)

MPL 40x15x5x2[7/3.5] / N38 - lamellar magnet

15.07 ZŁ brutto / pcs

Product available Ships today (order by 14:00)

MW 5x3 / N38 - cylindrical magnet

0.283 ZŁ brutto / pcs

Product available Ships today (order by 14:00)

UMH 75x18x68 [M8] / N38 - magnetic holder with hook

202.95 ZŁ brutto / pcs

It is ideally suited for places where solid attachment of the magnet to the substrate is required without the risk of detachment. Thanks to the hole (often for a screw), this model enables easy screwing to wood, wall, plastic, or metal. This product with a force of 1.37 kg works great as a door latch, speaker holder, or spacer element in devices.

This material behaves more like porcelain than steel, so it doesn't forgive mistakes during mounting. When tightening the screw, you must maintain caution. We recommend tightening manually with a screwdriver, not an impact driver, because too much pressure will cause the ring to crack. The flat screw head should evenly press the magnet. Remember: cracking during assembly results from material properties, not a product defect.

These magnets are coated with standard Ni-Cu-Ni plating, which protects them in indoor conditions, but does not ensure full waterproofing. In the place of the mounting hole, the coating is thinner and easily scratched when tightening the screw, which will become a corrosion focus. If you must use it outside, paint it with anti-corrosion paint after mounting.

A screw or bolt with a thread diameter smaller than 6/3.5 mm fits this model. For magnets with a straight hole, a conical head can act like a wedge and burst the magnet. Aesthetic mounting requires selecting the appropriate head size.

It is a magnetic ring with a diameter of 8 mm and thickness 3 mm. The key parameter here is the holding force amounting to approximately 1.37 kg (force ~13.48 N). The product has a [NiCuNi] coating and is made of NdFeB material. Inner hole dimension: 6/3.5 mm.

These magnets are magnetized axially (through the thickness), which means one flat side is the N pole and the other is S. If you want two such magnets screwed with cones facing each other (faces) to attract, you must connect them with opposite poles (N to S). When ordering a larger quantity, magnets are usually packed in stacks, where they are already naturally paired.

Strengths as well as weaknesses of neodymium magnets.

Pros

Besides their magnetic performance, neodymium magnets are valued for these benefits:

They do not lose magnetism, even over nearly 10 years – the reduction in lifting capacity is only ~1% (theoretically),
Magnets very well defend themselves against loss of magnetization caused by external fields,
Thanks to the reflective finish, the coating of nickel, gold-plated, or silver-plated gives an elegant appearance,
Neodymium magnets achieve maximum magnetic induction on a small surface, which ensures high operational effectiveness,
Neodymium magnets are characterized by extremely high magnetic induction on the magnet surface and are able to act (depending on the shape) even at a temperature of 230°C or more...
Due to the possibility of precise forming and customization to specialized projects, magnetic components can be produced in a wide range of forms and dimensions, which amplifies use scope,
Key role in modern technologies – they are used in HDD drives, electromotive mechanisms, precision medical tools, and complex engineering applications.
Compactness – despite small sizes they offer powerful magnetic field, making them ideal for precision applications

Cons

Disadvantages of neodymium magnets:

At very strong impacts they can crack, therefore we recommend placing them in special holders. A metal housing provides additional protection against damage and increases the magnet's durability.
We warn that neodymium magnets can lose their power at high temperatures. To prevent this, we suggest our specialized [AH] magnets, which work effectively even at 230°C.
Magnets exposed to a humid environment can corrode. Therefore when using outdoors, we advise using waterproof magnets made of rubber, plastic or other material resistant to moisture
Due to limitations in producing nuts and complicated shapes in magnets, we recommend using cover - magnetic mechanism.
Possible danger resulting from small fragments of magnets are risky, when accidentally swallowed, which becomes key in the aspect of protecting the youngest. It is also worth noting that small components of these devices are able to be problematic in diagnostics medical after entering the body.
High unit price – neodymium magnets have a higher price than other types of magnets (e.g. ferrite), which hinders application in large quantities

Holding force characteristics

Detachment force of the magnet in optimal conditions – what affects it?

Magnet power was defined for the most favorable conditions, including:

on a plate made of structural steel, perfectly concentrating the magnetic field
with a cross-section no less than 10 mm
with an polished contact surface
without any insulating layer between the magnet and steel
under axial application of breakaway force (90-degree angle)
in neutral thermal conditions

Determinants of lifting force in real conditions

Holding efficiency is affected by working environment parameters, such as (from most important):

Gap (betwixt the magnet and the metal), as even a tiny clearance (e.g. 0.5 mm) can cause a drastic drop in lifting capacity by up to 50% (this also applies to paint, rust or debris).
Angle of force application – maximum parameter is obtained only during pulling at a 90° angle. The force required to slide of the magnet along the plate is typically several times smaller (approx. 1/5 of the lifting capacity).
Plate thickness – too thin steel does not close the flux, causing part of the flux to be escaped into the air.
Steel grade – ideal substrate is pure iron steel. Stainless steels may attract less.
Surface structure – the smoother and more polished the surface, the larger the contact zone and higher the lifting capacity. Roughness acts like micro-gaps.
Thermal factor – high temperature reduces magnetic field. Exceeding the limit temperature can permanently demagnetize the magnet.

Holding force was measured on the plate surface of 20 mm thickness, when a perpendicular force was applied, in contrast under attempts to slide the magnet the load capacity is reduced by as much as 5 times. Moreover, even a small distance between the magnet’s surface and the plate reduces the lifting capacity.

Safe handling of neodymium magnets

Danger to pacemakers

Medical warning: Strong magnets can turn off heart devices and defibrillators. Stay away if you have medical devices.

Nickel coating and allergies

Some people have a hypersensitivity to nickel, which is the standard coating for NdFeB magnets. Frequent touching might lead to an allergic reaction. We strongly advise use protective gloves.

Handling guide

Use magnets consciously. Their powerful strength can surprise even experienced users. Be vigilant and respect their force.

Product not for children

Product intended for adults. Small elements can be swallowed, causing intestinal necrosis. Keep out of reach of children and animals.

Permanent damage

Standard neodymium magnets (N-type) lose magnetization when the temperature goes above 80°C. The loss of strength is permanent.

Machining danger

Combustion risk: Rare earth powder is explosive. Do not process magnets in home conditions as this risks ignition.

Eye protection

NdFeB magnets are ceramic materials, which means they are fragile like glass. Impact of two magnets leads to them breaking into shards.

Finger safety

Mind your fingers. Two large magnets will snap together immediately with a force of massive weight, crushing anything in their path. Exercise extreme caution!

Keep away from computers

Do not bring magnets close to a wallet, laptop, or TV. The magnetism can irreversibly ruin these devices and erase data from cards.

Compass and GPS

GPS units and mobile phones are highly sensitive to magnetic fields. Direct contact with a powerful NdFeB magnet can permanently damage the sensors in your phone.

Caution! Need more info? Read our article: Are neodymium magnets dangerous?

MP 8x6/3.5x3 / N38 - ring magnet

Physical properties - MP 8x6/3.5x3 / N38 - ring magnet

Magnetic properties of material N38

Physical properties of sintered neodymium magnets Nd2Fe14B at 20°C

Technical analysis of the magnet - technical parameters

Table 1: Static pull force (force vs distance) - characteristics MP 8x6/3.5x3 / N38

Table 2: Shear hold (wall) MP 8x6/3.5x3 / N38

Table 3: Wall mounting (sliding) - behavior on slippery surfaces MP 8x6/3.5x3 / N38

Table 4: Material efficiency (substrate influence) - sheet metal selection MP 8x6/3.5x3 / N38

Table 5: Working in heat (stability) - power drop MP 8x6/3.5x3 / N38

Table 6: Two magnets (attraction) - field collision MP 8x6/3.5x3 / N38

Table 7: Hazards (implants) - precautionary measures MP 8x6/3.5x3 / N38

Table 8: Impact energy (cracking risk) - warning MP 8x6/3.5x3 / N38

Table 9: Corrosion resistance MP 8x6/3.5x3 / N38

Table 10: Electrical data (Pc) MP 8x6/3.5x3 / N38

Table 11: Physics of underwater searching MP 8x6/3.5x3 / N38

1. Wall mount (shear)

2. Steel thickness impact

3. Temperature resistance

4. Demagnetization curve and operating point (B-H)

Chemical composition

Ecology and recycling (GPSR)

Magnet pull force

Magnetic Field

See also deals

MP 41x15x10 / N38 - ring magnet

MPL 40x15x5x2[7/3.5] / N38 - lamellar magnet

MW 5x3 / N38 - cylindrical magnet

UMH 75x18x68 [M8] / N38 - magnetic holder with hook

Strengths as well as weaknesses of neodymium magnets.

Pros

Cons

Holding force characteristics

Detachment force of the magnet in optimal conditions – what affects it?

Determinants of lifting force in real conditions

Safe handling of neodymium magnets

Danger to pacemakers

Nickel coating and allergies

Handling guide

Product not for children

Permanent damage

Machining danger

Eye protection

Finger safety

Keep away from computers

Compass and GPS

Physical properties of sintered neodymium magnets Nd₂Fe₁₄B at 20°C

Table 1: Static pull force (force vs distance) - characteristics
MP 8x6/3.5x3 / N38

Table 2: Shear hold (wall)
MP 8x6/3.5x3 / N38

Table 3: Wall mounting (sliding) - behavior on slippery surfaces
MP 8x6/3.5x3 / N38

Table 4: Material efficiency (substrate influence) - sheet metal selection
MP 8x6/3.5x3 / N38

Table 5: Working in heat (stability) - power drop
MP 8x6/3.5x3 / N38

Table 6: Two magnets (attraction) - field collision
MP 8x6/3.5x3 / N38

Table 7: Hazards (implants) - precautionary measures
MP 8x6/3.5x3 / N38

Table 8: Impact energy (cracking risk) - warning
MP 8x6/3.5x3 / N38

Table 9: Corrosion resistance
MP 8x6/3.5x3 / N38

Table 10: Electrical data (P_c)
MP 8x6/3.5x3 / N38

Table 11: Physics of underwater searching
MP 8x6/3.5x3 / N38