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MP 5x1.5x3 / N38 - ring magnet

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

ring magnet

Catalog no 030451

GTIN/EAN: 5906301812357

5.00

Load capacity 0.77 kg / 7.50 N Magnetic Induction 475.16 mT / 4752 Gs

Diameter: 5 mm [±0,1 mm]
internal diameter Ø: 1.5 mm [±0,1 mm]
Height: 3 mm [±0,1 mm]
Weight: 0.4 g
Magnetization Direction: ↑ axial
Coating: [NiCuNi] Nickel

see properties »

0.280 zł net / pcs

0.344 zł with VAT (23% VAT) / pcs

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Frequently asked questions

What is the hole in a ring magnet for?

For mounting on a screw or a shaft. The bore may be cylindrical or countersunk for a screw head. The hole removes magnet volume, so a ring holds less than a disc of the same outside diameter.

What is the polarisation?

Axial as standard — poles on the flat faces of the ring. Diametrical polarisation is made to order.

What sizes are available?

Outside diameter from 5 to 62 mm from stock. To order up to 200 mm outside diameter, 180 mm bore and 40 mm height, with a lead time of 25–35 days.

Guides from the knowledge base

Engineering report for this magnet

Full PDF analysis: pull and shear force, effect of distance, temperature and plate thickness, safety distances and the demagnetization curve.

PDF report Calculator

Want to talk magnets?

Call us now +48 888 99 98 98 alternatively let us know using contact form the contact section.
Specifications and structure of a neodymium magnet can be estimated using our power calculator.

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Technical specification - MP 5x1.5x3 / N38 - ring magnet

Specification / characteristics - MP 5x1.5x3 / N38 - ring magnet

properties

properties	values
Cat. no.	030451
GTIN/EAN	5906301812357
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	5 mm [±0,1 mm]
internal diameter Ø	1.5 mm [±0,1 mm]
Height	3 mm [±0,1 mm]
Weight	0.4 g
Magnetization Direction	↑ axial
Load capacity ~ ?	0.77 kg / 7.50 N
Magnetic Induction ~ ?	475.16 mT / 4752 Gs
Coating	[NiCuNi] Nickel
Manufacturing Tolerance	±0.1 mm

Magnetic properties of material N38

Specification / characteristics MP 5x1.5x3 / 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	310	°C
Curie Temperature TF	590	°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 modeling of the product - report

Presented data are the direct effect of a engineering calculation. Values rely on models for the material Nd₂Fe₁₄B. Actual conditions might slightly deviate from the simulation results. Use these data as a supplementary guide when designing systems.

Table 1: Static pull force (force vs distance) - interaction chart
MP 5x1.5x3 / N38

Distance (mm)	Induction (Gauss) / mT	Pull Force (kg/lbs/g/N)	Risk Status
0 mm	6157 Gs 615.7 mT	0.77 kg / 1.70 pounds 770.0 g / 7.6 N	weak grip
1 mm	3880 Gs 388.0 mT	0.31 kg / 0.67 pounds 305.8 g / 3.0 N	weak grip
2 mm	2310 Gs 231.0 mT	0.11 kg / 0.24 pounds 108.4 g / 1.1 N	weak grip
3 mm	1422 Gs 142.2 mT	0.04 kg / 0.09 pounds 41.0 g / 0.4 N	weak grip
5 mm	641 Gs 64.1 mT	0.01 kg / 0.02 pounds 8.3 g / 0.1 N	weak grip
10 mm	174 Gs 17.4 mT	0.00 kg / 0.00 pounds 0.6 g / 0.0 N	weak grip
15 mm	76 Gs 7.6 mT	0.00 kg / 0.00 pounds 0.1 g / 0.0 N	weak grip
20 mm	41 Gs 4.1 mT	0.00 kg / 0.00 pounds 0.0 g / 0.0 N	weak grip
30 mm	16 Gs 1.6 mT	0.00 kg / 0.00 pounds 0.0 g / 0.0 N	weak grip
50 mm	5 Gs 0.5 mT	0.00 kg / 0.00 pounds 0.0 g / 0.0 N	weak grip

Grip strength weakens sharply with every mm of distance. Keep in mind that even the smallest gap (e.g., dirt, paint, rust) significantly reduces the pull force. Neodymiums work most effectively during direct contact; distance drastically cuts the force. Observe how rapidly the load capacity drop, when the magnet does not adhere directly to the steel surface. When planning the mounting, avoid redundant distances.

Table 2: Slippage hold (wall)
MP 5x1.5x3 / N38

Distance (mm)	Friction coefficient	Pull Force (kg/lbs/g/N)
0 mm	Stal (~0.2)	0.15 kg / 0.34 pounds 154.0 g / 1.5 N
1 mm	Stal (~0.2)	0.06 kg / 0.14 pounds 62.0 g / 0.6 N
2 mm	Stal (~0.2)	0.02 kg / 0.05 pounds 22.0 g / 0.2 N
3 mm	Stal (~0.2)	0.01 kg / 0.02 pounds 8.0 g / 0.1 N
5 mm	Stal (~0.2)	0.00 kg / 0.00 pounds 2.0 g / 0.0 N
10 mm	Stal (~0.2)	0.00 kg / 0.00 pounds 0.0 g / 0.0 N
15 mm	Stal (~0.2)	0.00 kg / 0.00 pounds 0.0 g / 0.0 N
20 mm	Stal (~0.2)	0.00 kg / 0.00 pounds 0.0 g / 0.0 N
30 mm	Stal (~0.2)	0.00 kg / 0.00 pounds 0.0 g / 0.0 N
50 mm	Stal (~0.2)	0.00 kg / 0.00 pounds 0.0 g / 0.0 N

This section indicates the approximate force necessary to initiate the slippage of the magnet down on a vertical metal surface (considering typical friction coefficient). The holding force is a function of the separation distance between the magnet and the metal.

Table 3: Wall mounting (sliding) - vertical pull
MP 5x1.5x3 / N38

Surface type	Friction coefficient / % Mocy	Max load (kg/lbs/g/N)
Raw steel	µ = 0.3 30% Nominalnej Siły	0.23 kg / 0.51 pounds 231.0 g / 2.3 N
Painted steel (standard)	µ = 0.2 20% Nominalnej Siły	0.15 kg / 0.34 pounds 154.0 g / 1.5 N
Oily/slippery steel	µ = 0.1 10% Nominalnej Siły	0.08 kg / 0.17 pounds 77.0 g / 0.8 N
Magnet with anti-slip rubber	µ = 0.5 50% Nominalnej Siły	0.39 kg / 0.85 pounds 385.0 g / 3.8 N

When placing a magnet on a vertical surface (e.g., a car body), it will maintain barely approx. 20%-30% of nominal attraction strength. Gravity as well as a low friction coefficient influence the fact that magnets slip easier than they pop off the substrate. Want to create a wall mount? Consider that the shear force is significantly lower than the perpendicular breakaway force. On a slippery surface, the element will slide down under a noticeably lighter weight. Using a rubber coating can effectively raise the stability.

Table 4: Steel thickness (saturation) - sheet metal selection
MP 5x1.5x3 / N38

Steel thickness (mm)	% power	Real pull force (kg/lbs/g/N)
0.5 mm	10%	0.08 kg / 0.17 pounds 77.0 g / 0.8 N
1 mm	25%	0.19 kg / 0.42 pounds 192.5 g / 1.9 N
2 mm	50%	0.39 kg / 0.85 pounds 385.0 g / 3.8 N
3 mm	75%	0.58 kg / 1.27 pounds 577.5 g / 5.7 N
5 mm	100%	0.77 kg / 1.70 pounds 770.0 g / 7.6 N
10 mm	100%	0.77 kg / 1.70 pounds 770.0 g / 7.6 N
11 mm	100%	0.77 kg / 1.70 pounds 770.0 g / 7.6 N
12 mm	100%	0.77 kg / 1.70 pounds 770.0 g / 7.6 N

A thin metal plate is not enough to take in the entire magnetic field, which weakens actual performance of the magnet. Should you attach a powerful product to a weak sheet, the flux will penetrate right through and the attraction force will be weaker. To squeeze the maximum of this neodymium's power, you require a sufficiently solid element of steel. The material oversaturation causes that on thin elements (e.g., appliance housings), the product holds weaker. We advise picking the steel thickness from these parameters.

Table 5: Thermal stability (stability) - power drop
MP 5x1.5x3 / N38

Ambient temp. (°C)	Power loss	Remaining pull (kg/lbs/g/N)	Status
20 °C	0.0%	0.77 kg / 1.70 pounds 770.0 g / 7.6 N	OK
40 °C	-2.2%	0.75 kg / 1.66 pounds 753.1 g / 7.4 N	OK
60 °C	-4.4%	0.74 kg / 1.62 pounds 736.1 g / 7.2 N	OK
80 °C	-6.6%	0.72 kg / 1.59 pounds 719.2 g / 7.1 N
100 °C	-28.8%	0.55 kg / 1.21 pounds 548.2 g / 5.4 N

Ordinary NdFeB products lose strength above the temperature limit. Protect against heat – excessive heat can irreversibly destroy this magnet. With every degree above norm, the magnet's force briefly lowers. Do not use this magnet near heat sources higher than its operating temperature limit. Exceeding the critical threshold will lead to permanent loss of magnetic properties.

*Important note: Temperature resistance depends not only on the material grade, but also on the magnet's shape. Thin magnets (low permeance coefficient) may lose charge permanently under lower heat stress than taller cylinders. Warning indicator in the table points to permanent field degradation for this particular item.

Table 6: Two magnets (attraction) - forces in the system
MP 5x1.5x3 / N38

Gap (mm)	Attraction (kg/lbs) (N-S)	Shear Force (kg/lbs/g/N)	Repulsion (kg/lbs) (N-N)
0 mm	2.50 kg / 5.50 pounds 6 171 Gs	0.37 kg / 0.83 pounds 374 g / 3.7 N	N/A
1 mm	1.62 kg / 3.58 pounds 9 932 Gs	0.24 kg / 0.54 pounds 244 g / 2.4 N	1.46 kg / 3.22 pounds ~0 Gs
2 mm	0.99 kg / 2.19 pounds 7 760 Gs	0.15 kg / 0.33 pounds 149 g / 1.5 N	0.89 kg / 1.97 pounds ~0 Gs
3 mm	0.59 kg / 1.30 pounds 5 986 Gs	0.09 kg / 0.20 pounds 88 g / 0.9 N	0.53 kg / 1.17 pounds ~0 Gs
5 mm	0.21 kg / 0.47 pounds 3 600 Gs	0.03 kg / 0.07 pounds 32 g / 0.3 N	0.19 kg / 0.42 pounds ~0 Gs
10 mm	0.03 kg / 0.06 pounds 1 281 Gs	0.00 kg / 0.01 pounds 4 g / 0.0 N	0.02 kg / 0.05 pounds ~0 Gs
20 mm	0.00 kg / 0.00 pounds 349 Gs	0.00 kg / 0.00 pounds 0 g / 0.0 N	0.00 kg / 0.00 pounds ~0 Gs
50 mm	0.00 kg / 0.00 pounds 50 Gs	0.00 kg / 0.00 pounds 0 g / 0.0 N	0.00 kg / 0.00 pounds ~0 Gs
60 mm	0.00 kg / 0.00 pounds 33 Gs	0.00 kg / 0.00 pounds 0 g / 0.0 N	0.00 kg / 0.00 pounds ~0 Gs
70 mm	0.00 kg / 0.00 pounds 23 Gs	0.00 kg / 0.00 pounds 0 g / 0.0 N	0.00 kg / 0.00 pounds ~0 Gs
80 mm	0.00 kg / 0.00 pounds 17 Gs	0.00 kg / 0.00 pounds 0 g / 0.0 N	0.00 kg / 0.00 pounds ~0 Gs
90 mm	0.00 kg / 0.00 pounds 13 Gs	0.00 kg / 0.00 pounds 0 g / 0.0 N	0.00 kg / 0.00 pounds ~0 Gs
100 mm	0.00 kg / 0.00 pounds 10 Gs	0.00 kg / 0.00 pounds 0 g / 0.0 N	0.00 kg / 0.00 pounds ~0 Gs

Two strong neodymiums interact from a much further distance than a magnet and sheet setup. Such a system of two magnets produces a massive flux and a wider radius of action. Want to build a powerful holder? Apply two magnets instead of a neodymium and a striker plate. Be careful that when connecting a pair of magnets, the impact force is extreme. The levitation is a bit weaker than the connection force, but still impressive.
*The magnetic induction between like poles reaches ~0 Gs at the midpoint between the magnets (due to field cancellation).
* Results show friction force of dual matching neodymium magnets (friction coefficient ~0.15 for Ni-Ni plating).

Table 7: Safety (HSE) (electronics) - warnings
MP 5x1.5x3 / N38

Object / Device	Limit (Gauss) / mT	Safe distance
Pacemaker	5 Gs (0.5 mT)	5.0 cm
Hearing aid	10 Gs (1.0 mT)	4.0 cm
Mechanical watch	20 Gs (2.0 mT)	3.0 cm
Phone / Smartphone	40 Gs (4.0 mT)	2.5 cm
Car key	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

A strong magnetic field poses a large risk to electronics and medical implants. These NdFeB products generate a flux that destroys function of digital equipment. Remember: the unseen radiation penetrates the body and plastic. Special caution must be exercised by people with cochlear implants and drug dispensers. Influence will be felt by: automatic timepieces, car keys, membranes, and screens. Avoid contact with magnetic cards, HDD media, or precise measuring instruments.

Table 8: Impact energy (kinetic energy) - collision effects
MP 5x1.5x3 / N38

Start from (mm)	Speed (km/h)	Energy (J)
10 mm	22.92 km/h (6.37 m/s)	0.01 J
30 mm	22.95 km/h (6.37 m/s)	0.01 J
50 mm	22.95 km/h (6.37 m/s)	0.01 J
100 mm	22.95 km/h (6.38 m/s)	0.01 J

NdFeB products are very brittle – a violent impact against metal causes immediate chipping. Watch the impact speed – a magnet released freely speeds with massive force. Impact energy can destroy the magnet or dangerous crushing to skin. Hold the magnet firmly during mounting so it doesn't slam with momentum against the steel surface. A contact at a velocity of dozens of km/h means shattering of the neodymium. Use safety goggles when handling with large magnets.

Table 9: Coating parameters (durability)
MP 5x1.5x3 / 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)

Neodymium magnets are highly susceptible to corrosion without proper protection. Moisture resistance is crucial for installations in bathrooms or outdoors.

Table 10: Electrical data (P_c)
MP 5x1.5x3 / N38

Parameter	Value	SI Unit / Description
Magnetic Flux	811 Mx	8.1 µWb
P_c Coefficient	1.66	High (Stable)

Flux value emitted by the magnet pole. Essential parameter when building generators as well as sensors. The P_c coefficient defines the magnet's operating point.

Table 11: Underwater work (magnet fishing)
MP 5x1.5x3 / N38

Environment	Effective steel pull	Effect
Air (land)	0.77 kg	Standard
Water (riverbed)	0.88 kg (+0.11 kg buoyancy gain)	+14.5%

Warning: Standard nickel requires drying after every contact with moisture; lack of maintenance will lead to rust spots.

Contrary to myths, water does not block the magnetic field. As a result, your magnet will pull a heavier object from the bottom than if you lifted it in the air.

1. Vertical hold

*Note: On a vertical surface, the magnet retains just ~20% of its max power.

2. Efficiency vs thickness

*Thin steel (e.g. 0.5mm PC case) drastically weakens the holding force.

3. Thermal stability

*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) = 1.66

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%

Environmental data

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: 030451-2026

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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 0.77 kg works great as a cabinet closure, speaker holder, or mounting 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 excessive force 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.

Moisture can penetrate micro-cracks in the coating and cause oxidation of the magnet. Damage to the protective layer during assembly is the most common cause of rusting. If you must use it outside, paint it with anti-corrosion paint after mounting.

The inner hole diameter determines the maximum size of the mounting element. If the magnet does not have a chamfer (cone), we recommend using a screw with a flat or cylindrical head, or possibly using a washer. Aesthetic mounting requires selecting the appropriate head size.

The presented product is a ring magnet with dimensions Ø5 mm (outer diameter) and height 3 mm. The pulling force of this model is an impressive 0.77 kg, which translates to 7.50 N in newtons. The mounting hole diameter is precisely 1.5 mm.

The poles are located on the planes with holes, not on the sides of the ring. 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 Nd₂Fe₁₄B magnets.

Benefits

Besides their durability, neodymium magnets are valued for these benefits:

They do not lose magnetism, even over nearly ten years – the reduction in power is only ~1% (based on measurements),
Magnets effectively resist against loss of magnetization caused by ambient magnetic noise,
The use of an elegant layer of noble metals (nickel, gold, silver) causes the element to be more visually attractive,
Neodymium magnets generate maximum magnetic induction on a small area, which increases force concentration,
Thanks to resistance to high temperature, they are able to function (depending on the form) even at temperatures up to 230°C and higher...
Possibility of precise creating and optimizing to concrete conditions,
Fundamental importance in innovative solutions – they are utilized in data components, electromotive mechanisms, precision medical tools, and modern systems.
Thanks to efficiency per cm³, small magnets offer high operating force, in miniature format,

Disadvantages

Disadvantages of NdFeB magnets:

To avoid cracks upon strong impacts, we recommend using special steel holders. Such a solution protects the magnet and simultaneously improves its durability.
Neodymium magnets lose power when exposed to high temperatures. After reaching 80°C, many of them experience permanent weakening of strength (a factor is the shape and dimensions of the magnet). We offer magnets specially adapted to work at temperatures up to 230°C marked [AH], which are extremely resistant to heat
Magnets exposed to a humid environment can rust. Therefore while using outdoors, we suggest using water-impermeable magnets made of rubber, plastic or other material protecting against moisture
Due to limitations in realizing threads and complicated shapes in magnets, we propose using cover - magnetic mechanism.
Possible danger resulting from small fragments of magnets can be dangerous, when accidentally swallowed, which becomes key in the aspect of protecting the youngest. Additionally, small components of these devices are able to be problematic in diagnostics medical when they are in the body.
High unit price – neodymium magnets are more expensive than other types of magnets (e.g. ferrite), which increases costs of application in large quantities

Pull force analysis

Best holding force of the magnet in ideal parameters – what affects it?

The lifting capacity listed is a result of laboratory testing conducted under specific, ideal conditions:

using a base made of low-carbon steel, serving as a circuit closing element
with a thickness of at least 10 mm
with a plane free of scratches
under conditions of gap-free contact (surface-to-surface)
under axial application of breakaway force (90-degree angle)
in temp. approx. 20°C

Key elements affecting lifting force

It is worth knowing that the working load may be lower depending on the following factors, in order of importance:

Space between surfaces – every millimeter of distance (caused e.g. by veneer or unevenness) drastically reduces the pulling force, often by half at just 0.5 mm.
Force direction – remember that the magnet holds strongest perpendicularly. Under sliding down, the holding force drops significantly, often to levels of 20-30% of the maximum value.
Element thickness – for full efficiency, the steel must be adequately massive. Thin sheet restricts the attraction force (the magnet "punches through" it).
Chemical composition of the base – low-carbon steel gives the best results. Alloy steels decrease magnetic properties and lifting capacity.
Plate texture – smooth surfaces guarantee perfect abutment, which increases field saturation. Rough surfaces reduce efficiency.
Temperature influence – hot environment reduces magnetic field. Exceeding the limit temperature can permanently damage the magnet.

Holding force was measured on a smooth steel plate of 20 mm thickness, when a perpendicular force was applied, whereas under attempts to slide the magnet the lifting capacity is smaller. In addition, even a small distance between the magnet and the plate decreases the holding force.

Warnings

Allergy Warning

Warning for allergy sufferers: The Ni-Cu-Ni coating consists of nickel. If redness happens, immediately stop handling magnets and wear gloves.

Crushing risk

Big blocks can smash fingers instantly. Do not put your hand between two attracting surfaces.

Permanent damage

Watch the temperature. Exposing the magnet above 80 degrees Celsius will ruin its magnetic structure and pulling force.

Phone sensors

GPS units and smartphones are extremely susceptible to magnetism. Direct contact with a powerful NdFeB magnet can permanently damage the sensors in your phone.

Electronic devices

Powerful magnetic fields can corrupt files on credit cards, HDDs, and other magnetic media. Stay away of min. 10 cm.

Fire risk

Machining of NdFeB material poses a fire risk. Magnetic powder oxidizes rapidly with oxygen and is difficult to extinguish.

Protective goggles

Neodymium magnets are ceramic materials, which means they are prone to chipping. Impact of two magnets will cause them shattering into shards.

Swallowing risk

Absolutely keep magnets out of reach of children. Risk of swallowing is high, and the effects of magnets clamping inside the body are tragic.

Immense force

Use magnets consciously. Their huge power can shock even professionals. Stay alert and do not underestimate their power.

ICD Warning

Medical warning: Neodymium magnets can turn off heart devices and defibrillators. Do not approach if you have medical devices.

Security! Need more info? Check our post: Are neodymium magnets dangerous?

MP 5x1.5x3 / N38 - ring magnet

Technical specification - MP 5x1.5x3 / N38 - ring magnet

Magnetic properties of material N38

Physical properties of sintered neodymium magnets Nd2Fe14B at 20°C

Technical modeling of the product - report

Table 1: Static pull force (force vs distance) - interaction chart MP 5x1.5x3 / N38

Table 2: Slippage hold (wall) MP 5x1.5x3 / N38

Table 3: Wall mounting (sliding) - vertical pull MP 5x1.5x3 / N38

Table 4: Steel thickness (saturation) - sheet metal selection MP 5x1.5x3 / N38

Table 5: Thermal stability (stability) - power drop MP 5x1.5x3 / N38

Table 6: Two magnets (attraction) - forces in the system MP 5x1.5x3 / N38

Table 7: Safety (HSE) (electronics) - warnings MP 5x1.5x3 / N38

Table 8: Impact energy (kinetic energy) - collision effects MP 5x1.5x3 / N38

Table 9: Coating parameters (durability) MP 5x1.5x3 / N38

Table 10: Electrical data (Pc) MP 5x1.5x3 / N38

Table 11: Underwater work (magnet fishing) MP 5x1.5x3 / N38

1. Vertical hold

2. Efficiency vs thickness

3. Thermal stability

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

Chemical composition

Environmental data

Pulling force

Field Strength

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Strengths as well as weaknesses of Nd2Fe14B magnets.

Benefits

Disadvantages

Pull force analysis

Best holding force of the magnet in ideal parameters – what affects it?

Key elements affecting lifting force

Warnings

Allergy Warning

Crushing risk

Permanent damage

Phone sensors

Electronic devices

Fire risk

Protective goggles

Swallowing risk

Immense force

ICD Warning

Physical properties of sintered neodymium magnets Nd₂Fe₁₄B at 20°C

Table 1: Static pull force (force vs distance) - interaction chart
MP 5x1.5x3 / N38

Table 2: Slippage hold (wall)
MP 5x1.5x3 / N38

Table 3: Wall mounting (sliding) - vertical pull
MP 5x1.5x3 / N38

Table 4: Steel thickness (saturation) - sheet metal selection
MP 5x1.5x3 / N38

Table 5: Thermal stability (stability) - power drop
MP 5x1.5x3 / N38

Table 6: Two magnets (attraction) - forces in the system
MP 5x1.5x3 / N38

Table 7: Safety (HSE) (electronics) - warnings
MP 5x1.5x3 / N38

Table 8: Impact energy (kinetic energy) - collision effects
MP 5x1.5x3 / N38

Table 9: Coating parameters (durability)
MP 5x1.5x3 / N38

Table 10: Electrical data (P_c)
MP 5x1.5x3 / N38

Table 11: Underwater work (magnet fishing)
MP 5x1.5x3 / N38

Strengths as well as weaknesses of Nd₂Fe₁₄B magnets.