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MW 4x5 / N38 - cylindrical 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

cylindrical magnet

Catalog no 010077

GTIN/EAN: 5906301810766

5.00

Diameter Ø

4 mm [±0,1 mm]

Height

5 mm [±0,1 mm]

Weight

0.47 g

Magnetization Direction

↑ axial

Load capacity

0.46 kg / 4.48 N

Magnetic Induction

573.83 mT / 5738 Gs

Coating

[NiCuNi] Nickel

check technical specifications »

0.320 ZŁ with VAT / pcs + price for transport

0.260 ZŁ net + 23% VAT / pcs

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Carbon Footprint – environmental impact GPSR Regulation – product safety

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Pick up the phone and ask +48 22 499 98 98 alternatively drop us a message through contact form through our site.
Parameters and shape of neodymium magnets can be reviewed with our force calculator.

Orders placed before 14:00 will be shipped the same business day.

Technical of the product - MW 4x5 / N38 - cylindrical magnet

Specification / characteristics - MW 4x5 / N38 - cylindrical magnet

properties

properties	values
Cat. no.	010077
GTIN/EAN	5906301810766
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 Ø	4 mm [±0,1 mm]
Height	5 mm [±0,1 mm]
Weight	0.47 g
Magnetization Direction	↑ axial
Load capacity ~ ?	0.46 kg / 4.48 N
Magnetic Induction ~ ?	573.83 mT / 5738 Gs
Coating	[NiCuNi] Nickel
Manufacturing Tolerance	±0.1 mm

Magnetic properties of material N38

Specification / characteristics MW 4x5 / N38 - cylindrical 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

Physical modeling of the product - report

Presented values constitute the direct effect of a mathematical analysis. Results rely on models for the material Nd₂Fe₁₄B. Actual parameters may differ. Please consider these calculations as a reference point during assembly planning.

Table 1: Static force (pull vs gap) - characteristics
MW 4x5 / N38

Distance (mm)	Induction (Gauss) / mT	Pull Force (kg/lbs/g/N)	Risk Status
0 mm	5727 Gs 572.7 mT	0.46 kg / 1.01 pounds 460.0 g / 4.5 N	low risk
1 mm	3109 Gs 310.9 mT	0.14 kg / 0.30 pounds 135.6 g / 1.3 N	low risk
2 mm	1577 Gs 157.7 mT	0.03 kg / 0.08 pounds 34.9 g / 0.3 N	low risk
3 mm	856 Gs 85.6 mT	0.01 kg / 0.02 pounds 10.3 g / 0.1 N	low risk
5 mm	323 Gs 32.3 mT	0.00 kg / 0.00 pounds 1.5 g / 0.0 N	low risk
10 mm	66 Gs 6.6 mT	0.00 kg / 0.00 pounds 0.1 g / 0.0 N	low risk
15 mm	24 Gs 2.4 mT	0.00 kg / 0.00 pounds 0.0 g / 0.0 N	low risk
20 mm	11 Gs 1.1 mT	0.00 kg / 0.00 pounds 0.0 g / 0.0 N	low risk
30 mm	4 Gs 0.4 mT	0.00 kg / 0.00 pounds 0.0 g / 0.0 N	low risk
50 mm	1 Gs 0.1 mT	0.00 kg / 0.00 pounds 0.0 g / 0.0 N	low risk

Magnetic force weakens drastically per each millimeter of spacing. Note that even a very thin break (e.g., contamination, varnish, dust) significantly diminishes the holding power. Neodymiums hold most effectively during direct contact; air break kills the force. Observe how quickly the load capacity fall, when the product does not touch tightly to the steel surface. When calculating the arrangement, eliminate unnecessary gaps.

Table 2: Vertical hold (vertical surface)
MW 4x5 / N38

Distance (mm)	Friction coefficient	Pull Force (kg/lbs/g/N)
0 mm	Stal (~0.2)	0.09 kg / 0.20 pounds 92.0 g / 0.9 N
1 mm	Stal (~0.2)	0.03 kg / 0.06 pounds 28.0 g / 0.3 N
2 mm	Stal (~0.2)	0.01 kg / 0.01 pounds 6.0 g / 0.1 N
3 mm	Stal (~0.2)	0.00 kg / 0.00 pounds 2.0 g / 0.0 N
5 mm	Stal (~0.2)	0.00 kg / 0.00 pounds 0.0 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

The following data presents the theoretical force necessary to initiate the sliding of the magnet vertically against a vertical metal surface (assuming standard friction coefficient). This value varies with the distance between the magnet and the surface.

Table 3: Vertical assembly (sliding) - vertical pull
MW 4x5 / N38

Surface type	Friction coefficient / % Mocy	Max load (kg/lbs/g/N)
Raw steel	µ = 0.3 30% Nominalnej Siły	0.14 kg / 0.30 pounds 138.0 g / 1.4 N
Painted steel (standard)	µ = 0.2 20% Nominalnej Siły	0.09 kg / 0.20 pounds 92.0 g / 0.9 N
Oily/slippery steel	µ = 0.1 10% Nominalnej Siły	0.05 kg / 0.10 pounds 46.0 g / 0.5 N
Magnet with anti-slip rubber	µ = 0.5 50% Nominalnej Siły	0.23 kg / 0.51 pounds 230.0 g / 2.3 N

When hanging a element on a vertical plane (e.g., a fridge), it will maintain only approx. 1/5 of its maximum pull force. Gravity as well as a low friction coefficient cause that holders move down faster than they pop off the substrate. Planning a wall mount? Consider that the shear force is significantly lower than the maximum static pull force. On a smooth steel, the magnet will slip down under a significantly smaller weight. Utilizing a rubberized layer can effectively increase the grip.

Table 4: Steel thickness (substrate influence) - sheet metal selection
MW 4x5 / N38

Steel thickness (mm)	% power	Real pull force (kg/lbs/g/N)
0.5 mm	10%	0.05 kg / 0.10 pounds 46.0 g / 0.5 N
1 mm	25%	0.12 kg / 0.25 pounds 115.0 g / 1.1 N
2 mm	50%	0.23 kg / 0.51 pounds 230.0 g / 2.3 N
3 mm	75%	0.35 kg / 0.76 pounds 345.0 g / 3.4 N
5 mm	100%	0.46 kg / 1.01 pounds 460.0 g / 4.5 N
10 mm	100%	0.46 kg / 1.01 pounds 460.0 g / 4.5 N
11 mm	100%	0.46 kg / 1.01 pounds 460.0 g / 4.5 N
12 mm	100%	0.46 kg / 1.01 pounds 460.0 g / 4.5 N

A too thin steel is unable to conduct the full magnetic flux, which wastes potential of the magnet. Should you mount a strong magnet to a thin surface, the field will penetrate right through and the pull force will drop sharply. To squeeze 100% of this magnet's power, you need a suitably thick piece of metal. The saturation phenomenon causes that on thin elements (e.g., thin profiles), the magnet holds weaker. We recommend selecting the steel dimension from these parameters.

Table 5: Thermal stability (material behavior) - resistance threshold
MW 4x5 / N38

Ambient temp. (°C)	Power loss	Remaining pull (kg/lbs/g/N)	Status
20 °C	0.0%	0.46 kg / 1.01 pounds 460.0 g / 4.5 N	OK
40 °C	-2.2%	0.45 kg / 0.99 pounds 449.9 g / 4.4 N	OK
60 °C	-4.4%	0.44 kg / 0.97 pounds 439.8 g / 4.3 N	OK
80 °C	-6.6%	0.43 kg / 0.95 pounds 429.6 g / 4.2 N
100 °C	-28.8%	0.33 kg / 0.72 pounds 327.5 g / 3.2 N

Standard neodymium magnets change their properties power past the thermal threshold. Avoid high temperatures – high temperature can permanently destroy this magnet. With every degree above norm, the magnet's force momentarily drops. Refrain from using this product near heat sources exceeding its safe range. Exceeding the critical threshold will result in permanent loss of magnetic properties.

*Important note: Heat tolerance depends not only on the material grade, and the Permeance Coefficient Pc. Thin magnets (low Pc) may lose charge permanently at lower temperatures than long magnets. The danger warning in the table signals a risk of irreversible loss for this particular item.

Table 6: Magnet-Magnet interaction (repulsion) - forces in the system
MW 4x5 / N38

Gap (mm)	Attraction (kg/lbs) (N-S)	Shear Force (kg/lbs/g/N)	Repulsion (kg/lbs) (N-N)
0 mm	2.54 kg / 5.60 pounds 6 049 Gs	0.38 kg / 0.84 pounds 381 g / 3.7 N	N/A
1 mm	1.45 kg / 3.19 pounds 8 646 Gs	0.22 kg / 0.48 pounds 217 g / 2.1 N	1.30 kg / 2.87 pounds ~0 Gs
2 mm	0.75 kg / 1.65 pounds 6 218 Gs	0.11 kg / 0.25 pounds 112 g / 1.1 N	0.67 kg / 1.49 pounds ~0 Gs
3 mm	0.38 kg / 0.83 pounds 4 412 Gs	0.06 kg / 0.12 pounds 57 g / 0.6 N	0.34 kg / 0.75 pounds ~0 Gs
5 mm	0.10 kg / 0.23 pounds 2 299 Gs	0.02 kg / 0.03 pounds 15 g / 0.2 N	0.09 kg / 0.20 pounds ~0 Gs
10 mm	0.01 kg / 0.02 pounds 646 Gs	0.00 kg / 0.00 pounds 1 g / 0.0 N	0.00 kg / 0.00 pounds ~0 Gs
20 mm	0.00 kg / 0.00 pounds 132 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 12 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 7 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 5 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 3 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 2 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 2 Gs	0.00 kg / 0.00 pounds 0 g / 0.0 N	0.00 kg / 0.00 pounds ~0 Gs

Two magnetic products interact from a significantly greater distance than a neodymium and metal setup. Such a system of magnet-to-magnet produces a massive flux and a larger range of action. Designing a strong closure? Use a pair of magnets instead of a neodymium and a striker plate. Remember that when bringing together two magnets, the collision energy is massive. The levitation is slightly lower than the attraction, but still significant.
*Field value between like poles is approximately ~0 Gs at the geometric center between the magnets (caused by magnetic field nullification).
Important: Results refer to sliding force of dual matching magnets (friction coefficient ~0.15 for Ni-Ni layer).

Table 7: Protective zones (electronics) - precautionary measures
MW 4x5 / N38

Object / Device	Limit (Gauss) / mT	Safe distance
Pacemaker	5 Gs (0.5 mT)	3.0 cm
Hearing aid	10 Gs (1.0 mT)	2.5 cm
Mechanical watch	20 Gs (2.0 mT)	2.0 cm
Phone / Smartphone	40 Gs (4.0 mT)	1.5 cm
Car key	50 Gs (5.0 mT)	1.5 cm
Payment card	400 Gs (40.0 mT)	0.5 cm
HDD hard drive	600 Gs (60.0 mT)	0.5 cm

Extremely neodym field poses a large risk to electronic devices and pacemakers. These NdFeB products generate a flux that destroys function of digital equipment. Be aware: the unseen radiation passes through tissues and housings. Exceptional care must be exercised by people with cochlear implants and insulin pumps. Also at risk are: automatic timepieces, car keys, membranes, and displays. Do not bring the product near payment cards, HDD media, or precise measuring instruments.

Table 8: Dynamics (kinetic energy) - collision effects
MW 4x5 / N38

Start from (mm)	Speed (km/h)	Energy (J)
10 mm	31.55 km/h (8.76 m/s)	0.02 J
30 mm	54.65 km/h (15.18 m/s)	0.05 J
50 mm	70.55 km/h (19.60 m/s)	0.09 J
100 mm	99.77 km/h (27.71 m/s)	0.18 J

NdFeB products are prone to chipping – a strong collision with metal risks their cracking. Control the attraction moment – a magnet released freely speeds with massive force. Striking energy can destroy the magnet or painful pinches to fingers. Be sure to control the product during installation so it doesn't slam with momentum against the steel surface. A contact at a velocity of dozens of km/h ends with a crack of the magnet. Wear safety glasses when handling with large magnets.

Table 9: Corrosion resistance
MW 4x5 / 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. Note the thickness of the protective layer.

Table 10: Construction data (P_c)
MW 4x5 / N38

Parameter	Value	SI Unit / Description
Magnetic Flux	760 Mx	7.6 µWb
P_c Coefficient	1.00	High (Stable)

Flux value emitted by the magnet pole. Essential parameter for generator designers as well as sensors. The P_c coefficient determines the working geometry.

Table 11: Physics of underwater searching
MW 4x5 / N38

Environment	Effective steel pull	Effect
Air (land)	0.46 kg	Standard
Water (riverbed)	0.53 kg (+0.07 kg buoyancy gain)	+14.5%

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

In water, the magnet feels stronger thanks to Archimedes' principle. As a result, your magnet will pull a heavier object from the bottom than if you lifted it in the air.

1. Wall mount (shear)

*Note: On a vertical wall, the magnet holds just approx. 20-30% of its perpendicular strength.

2. Efficiency vs thickness

*Thin steel (e.g. computer case) significantly reduces the holding force.

3. Thermal stability

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

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

chart generated for the permeance coefficient P_c (Permeance Coefficient) = 1.00

The chart above illustrates the magnetic characteristics of the material within the second quadrant of the hysteresis loop. 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: 010077-2026

Quick Unit Converter

Pulling force

Kilograms (kg)

Force (N)

lbs

Magnetic Induction

Gauss (Gs)

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This product is a very strong cylinder magnet, manufactured from advanced NdFeB material, which, at dimensions of Ø4x5 mm, guarantees optimal power. The MW 4x5 / N38 component features high dimensional repeatability and industrial build quality, making it a perfect solution for professional engineers and designers. As a magnetic rod with impressive force (approx. 0.46 kg), this product is in stock from our warehouse in Poland, ensuring lightning-fast order fulfillment. Furthermore, its Ni-Cu-Ni coating secures it against corrosion in typical operating conditions, guaranteeing an aesthetic appearance and durability for years.

It finds application in DIY projects, advanced automation, and broadly understood industry, serving as a positioning or actuating element. Thanks to the high power of 4.48 N with a weight of only 0.47 g, this cylindrical magnet is indispensable in electronics and wherever every gram matters.

Due to the brittleness of the NdFeB material, we absolutely advise against force-fitting (so-called press-fit), as this risks chipping the coating of this precision component. To ensure long-term durability in industry, anaerobic resins are used, which do not react with the nickel coating and fill the gap, guaranteeing durability of the connection.

Grade N38 is the most popular standard for industrial neodymium magnets, offering a great economic balance and high resistance to demagnetization. If you need even stronger magnets in the same volume (Ø4x5), contact us regarding higher grades (e.g., N50, N52), however, N38 is the standard available off-the-shelf in our store.

The presented product is a neodymium magnet with precisely defined parameters: diameter 4 mm and height 5 mm. The value of 4.48 N means that the magnet is capable of holding a weight many times exceeding its own mass of 0.47 g. The product has a [NiCuNi] coating, which secures it against oxidation, giving it an aesthetic, silvery shine.

This cylinder is magnetized axially (along the height of 5 mm), which means that the N and S poles are located on the flat, circular surfaces. Such an arrangement is most desirable when connecting magnets in stacks (e.g., in filters) or when mounting in sockets at the bottom of a hole. On request, we can also produce versions magnetized diametrically if your project requires it.

Pros as well as cons of rare earth magnets.

Advantages

Besides their immense magnetic power, neodymium magnets offer the following advantages:

They virtually do not lose power, because even after ten years the decline in efficiency is only ~1% (based on calculations),
They maintain their magnetic properties even under strong external field,
Thanks to the elegant finish, the surface of nickel, gold-plated, or silver-plated gives an elegant appearance,
Neodymium magnets generate maximum magnetic induction on a small area, which ensures high operational effectiveness,
Neodymium magnets are characterized by very high magnetic induction on the magnet surface and can work (depending on the shape) even at a temperature of 230°C or more...
Possibility of exact shaping and adapting to concrete conditions,
Wide application in modern technologies – they serve a role in computer drives, electric motors, medical equipment, also other advanced devices.
Compactness – despite small sizes they offer powerful magnetic field, making them ideal for precision applications

Disadvantages

Cons of neodymium magnets and ways of using them

To avoid cracks upon strong impacts, we suggest using special steel housings. Such a solution secures the magnet and simultaneously improves its durability.
Neodymium magnets decrease their force under the influence of heating. As soon as 80°C is exceeded, many of them start losing their force. Therefore, we recommend our special magnets marked [AH], which maintain stability even at temperatures up to 230°C
Due to the susceptibility of magnets to corrosion in a humid environment, we advise using waterproof magnets made of rubber, plastic or other material resistant to moisture, when using outdoors
Due to limitations in creating nuts and complicated shapes in magnets, we recommend using a housing - magnetic mechanism.
Potential hazard to health – tiny shards of magnets pose a threat, when accidentally swallowed, which becomes key in the context of child safety. It is also worth noting that small components of these products are able to complicate diagnosis medical when they are in the body.
With budget limitations the cost of neodymium magnets is a challenge,

Lifting parameters

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

The load parameter shown concerns the limit force, measured under optimal environment, meaning:

with the application of a sheet made of special test steel, guaranteeing full magnetic saturation
possessing a massiveness of at least 10 mm to ensure full flux closure
with a surface cleaned and smooth
without any insulating layer between the magnet and steel
under axial force direction (90-degree angle)
in stable room temperature

Impact of factors on magnetic holding capacity in practice

In real-world applications, the actual holding force results from a number of factors, presented from the most important:

Gap (betwixt the magnet and the metal), as even a very small clearance (e.g. 0.5 mm) leads to a reduction in lifting capacity by up to 50% (this also applies to paint, rust or dirt).
Loading method – catalog parameter refers to pulling vertically. When applying parallel force, the magnet exhibits significantly lower power (typically approx. 20-30% of maximum force).
Steel thickness – insufficiently thick plate does not accept the full field, causing part of the power to be lost into the air.
Plate material – low-carbon steel attracts best. Higher carbon content reduce magnetic properties and holding force.
Surface condition – ground elements ensure maximum contact, which improves force. Uneven metal weaken the grip.
Thermal environment – temperature increase results in weakening of induction. It is worth remembering the thermal limit for a given model.

Lifting capacity was determined using a smooth steel plate of suitable thickness (min. 20 mm), under vertically applied force, however under parallel forces the load capacity is reduced by as much as 5 times. Moreover, even a slight gap between the magnet’s surface and the plate lowers the lifting capacity.

Safe handling of neodymium magnets

Heat warning

Do not overheat. NdFeB magnets are sensitive to temperature. If you need operation above 80°C, ask us about HT versions (H, SH, UH).

Do not drill into magnets

Mechanical processing of NdFeB material carries a risk of fire hazard. Magnetic powder reacts violently with oxygen and is hard to extinguish.

Fragile material

Protect your eyes. Magnets can explode upon violent connection, launching sharp fragments into the air. We recommend safety glasses.

Avoid contact if allergic

Allergy Notice: The Ni-Cu-Ni coating contains nickel. If skin irritation occurs, cease handling magnets and wear gloves.

Crushing force

Risk of injury: The attraction force is so great that it can cause blood blisters, crushing, and broken bones. Protective gloves are recommended.

Immense force

Before use, check safety instructions. Uncontrolled attraction can destroy the magnet or hurt your hand. Be predictive.

Electronic hazard

Powerful magnetic fields can erase data on payment cards, HDDs, and other magnetic media. Maintain a gap of min. 10 cm.

Medical implants

Life threat: Neodymium magnets can turn off pacemakers and defibrillators. Do not approach if you have medical devices.

Precision electronics

An intense magnetic field negatively affects the functioning of magnetometers in smartphones and GPS navigation. Maintain magnets near a smartphone to avoid breaking the sensors.

Danger to the youngest

Strictly keep magnets out of reach of children. Ingestion danger is significant, and the consequences of magnets connecting inside the body are life-threatening.

Safety First! Want to know more? Read our article: Are neodymium magnets dangerous?

MW 4x5 / N38 - cylindrical magnet

Technical of the product - MW 4x5 / N38 - cylindrical magnet

Magnetic properties of material N38

Physical properties of sintered neodymium magnets Nd2Fe14B at 20°C

Physical modeling of the product - report

Table 1: Static force (pull vs gap) - characteristics MW 4x5 / N38

Table 2: Vertical hold (vertical surface) MW 4x5 / N38

Table 3: Vertical assembly (sliding) - vertical pull MW 4x5 / N38

Table 4: Steel thickness (substrate influence) - sheet metal selection MW 4x5 / N38

Table 5: Thermal stability (material behavior) - resistance threshold MW 4x5 / N38

Table 6: Magnet-Magnet interaction (repulsion) - forces in the system MW 4x5 / N38

Table 7: Protective zones (electronics) - precautionary measures MW 4x5 / N38

Table 8: Dynamics (kinetic energy) - collision effects MW 4x5 / N38

Table 9: Corrosion resistance MW 4x5 / N38

Table 10: Construction data (Pc) MW 4x5 / N38

Table 11: Physics of underwater searching MW 4x5 / N38

1. Wall mount (shear)

2. Efficiency vs thickness

3. Thermal stability

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

Chemical composition

Ecology and recycling (GPSR)

Pulling force

Magnetic Induction

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Pros as well as cons of rare earth magnets.

Advantages

Disadvantages

Lifting parameters

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

Impact of factors on magnetic holding capacity in practice

Safe handling of neodymium magnets

Heat warning

Do not drill into magnets

Fragile material

Avoid contact if allergic

Crushing force

Immense force

Electronic hazard

Medical implants

Precision electronics

Danger to the youngest

Physical properties of sintered neodymium magnets Nd₂Fe₁₄B at 20°C

Table 1: Static force (pull vs gap) - characteristics
MW 4x5 / N38

Table 2: Vertical hold (vertical surface)
MW 4x5 / N38

Table 3: Vertical assembly (sliding) - vertical pull
MW 4x5 / N38

Table 4: Steel thickness (substrate influence) - sheet metal selection
MW 4x5 / N38

Table 5: Thermal stability (material behavior) - resistance threshold
MW 4x5 / N38

Table 6: Magnet-Magnet interaction (repulsion) - forces in the system
MW 4x5 / N38

Table 7: Protective zones (electronics) - precautionary measures
MW 4x5 / N38

Table 8: Dynamics (kinetic energy) - collision effects
MW 4x5 / N38

Table 9: Corrosion resistance
MW 4x5 / N38

Table 10: Construction data (P_c)
MW 4x5 / N38

Table 11: Physics of underwater searching
MW 4x5 / N38