Product available Ships today (order by 14:00)

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

view technical specifications »

0.320 ZŁ with VAT / pcs + price for transport

0.260 ZŁ net + 23% VAT / pcs

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Detailed specification - 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

Engineering simulation of the magnet - technical parameters

Presented information constitute the direct effect of a physical analysis. Results were calculated on algorithms for the class Nd₂Fe₁₄B. Actual parameters might slightly differ from theoretical values. Use these calculations as a reference point during assembly planning.

Table 1: Static force (pull vs distance) - 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 LBS 460.0 g / 4.5 N	safe
1 mm	3109 Gs 310.9 mT	0.14 kg / 0.30 LBS 135.6 g / 1.3 N	safe
2 mm	1577 Gs 157.7 mT	0.03 kg / 0.08 LBS 34.9 g / 0.3 N	safe
3 mm	856 Gs 85.6 mT	0.01 kg / 0.02 LBS 10.3 g / 0.1 N	safe
5 mm	323 Gs 32.3 mT	0.00 kg / 0.00 LBS 1.5 g / 0.0 N	safe
10 mm	66 Gs 6.6 mT	0.00 kg / 0.00 LBS 0.1 g / 0.0 N	safe
15 mm	24 Gs 2.4 mT	0.00 kg / 0.00 LBS 0.0 g / 0.0 N	safe
20 mm	11 Gs 1.1 mT	0.00 kg / 0.00 LBS 0.0 g / 0.0 N	safe
30 mm	4 Gs 0.4 mT	0.00 kg / 0.00 LBS 0.0 g / 0.0 N	safe
50 mm	1 Gs 0.1 mT	0.00 kg / 0.00 LBS 0.0 g / 0.0 N	safe

Pulling power drops significantly with every subsequent millimeter of gap. Keep in mind that even the smallest gap (e.g., dirt, varnish, dust) significantly reduces the pull force. Magnetic products operate optimally at the point of direct contact; gap weakens the force. Observe how rapidly the load capacity fall, when the product does not adhere directly to the metal substrate. When calculating the mounting, avoid additional spacers.

Table 2: Shear load (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 LBS 92.0 g / 0.9 N
1 mm	Stal (~0.2)	0.03 kg / 0.06 LBS 28.0 g / 0.3 N
2 mm	Stal (~0.2)	0.01 kg / 0.01 LBS 6.0 g / 0.1 N
3 mm	Stal (~0.2)	0.00 kg / 0.00 LBS 2.0 g / 0.0 N
5 mm	Stal (~0.2)	0.00 kg / 0.00 LBS 0.0 g / 0.0 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

This section presents the approximate weight limit needed to start the downward movement of the magnet downwards against a vertical metal surface (assuming typical friction). This parameter is a function of the air gap between the magnet and the metal.

Table 3: Wall mounting (shearing) - 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 LBS 138.0 g / 1.4 N
Painted steel (standard)	µ = 0.2 20% Nominalnej Siły	0.09 kg / 0.20 LBS 92.0 g / 0.9 N
Oily/slippery steel	µ = 0.1 10% Nominalnej Siły	0.05 kg / 0.10 LBS 46.0 g / 0.5 N
Magnet with anti-slip rubber	µ = 0.5 50% Nominalnej Siły	0.23 kg / 0.51 LBS 230.0 g / 2.3 N

When hanging a element on a upright wall (e.g., a car body), it will only hold only approx. 20%-30% of its nominal power. Gravitational force as well as a low friction coefficient mean that products slip faster than they pop off the substrate. Designing a wall mount? Remember that the shear force is significantly lower than the perpendicular breakaway force. On a painted metal, the magnet will slide down under a noticeably lighter load. Application of an anti-slip pad can significantly 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 LBS 46.0 g / 0.5 N
1 mm	25%	0.12 kg / 0.25 LBS 115.0 g / 1.1 N
2 mm	50%	0.23 kg / 0.51 LBS 230.0 g / 2.3 N
3 mm	75%	0.35 kg / 0.76 LBS 345.0 g / 3.4 N
5 mm	100%	0.46 kg / 1.01 LBS 460.0 g / 4.5 N
10 mm	100%	0.46 kg / 1.01 LBS 460.0 g / 4.5 N
11 mm	100%	0.46 kg / 1.01 LBS 460.0 g / 4.5 N
12 mm	100%	0.46 kg / 1.01 LBS 460.0 g / 4.5 N

A too thin steel is unable to take in the entire magnetic field, which weakens actual performance of the magnet. If you install a neodymium to a weak sheet, the field will penetrate right through and the attraction force will be weaker. To achieve full efficiency of this neodymium's potential, you need a suitably thick backing of steel. The material oversaturation causes that on delicate walls (e.g., car bodies), the magnet shows lower pull force. We recommend selecting the steel cross-section from these parameters.

Table 5: Thermal stability (stability) - thermal limit
MW 4x5 / N38

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

Ordinary NdFeB products lose power above the temperature limit. Watch out for overheating – heat can permanently damage this product. As the temperature rises, the magnet's force briefly drops. Do not use this magnet in hot environments exceeding its operating temperature limit. Ignoring the limit will result in irreversible degradation of magnetism.

*Engineering note: Temperature resistance is determined by both grade, and the Permeance Coefficient Pc. Flat magnets (low Pc) may lose charge permanently sooner than taller cylinders. The danger warning in the table signals permanent field degradation for this specific geometry.

Table 6: Magnet-Magnet interaction (repulsion) - field collision
MW 4x5 / N38

Gap (mm)	Attraction (kg/lbs) (N-S)	Shear Strength (kg/lbs/g/N)	Repulsion (kg/lbs) (N-N)
0 mm	2.54 kg / 5.60 LBS 6 049 Gs	0.38 kg / 0.84 LBS 381 g / 3.7 N	N/A
1 mm	1.45 kg / 3.19 LBS 8 646 Gs	0.22 kg / 0.48 LBS 217 g / 2.1 N	1.30 kg / 2.87 LBS ~0 Gs
2 mm	0.75 kg / 1.65 LBS 6 218 Gs	0.11 kg / 0.25 LBS 112 g / 1.1 N	0.67 kg / 1.49 LBS ~0 Gs
3 mm	0.38 kg / 0.83 LBS 4 412 Gs	0.06 kg / 0.12 LBS 57 g / 0.6 N	0.34 kg / 0.75 LBS ~0 Gs
5 mm	0.10 kg / 0.23 LBS 2 299 Gs	0.02 kg / 0.03 LBS 15 g / 0.2 N	0.09 kg / 0.20 LBS ~0 Gs
10 mm	0.01 kg / 0.02 LBS 646 Gs	0.00 kg / 0.00 LBS 1 g / 0.0 N	0.00 kg / 0.00 LBS ~0 Gs
20 mm	0.00 kg / 0.00 LBS 132 Gs	0.00 kg / 0.00 LBS 0 g / 0.0 N	0.00 kg / 0.00 LBS ~0 Gs
50 mm	0.00 kg / 0.00 LBS 12 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 7 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 5 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 3 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 2 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 2 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 creates a more powerful interaction and a larger range of performance. Planning to create a strong closure? Utilize two neodymiums instead of one magnet and a steel. Be careful that when connecting a pair of magnets, the impact force is extreme. The levitation is marginally weaker than the connection force, but still significant.
*Field value between like poles is approximately ~0 Gs at the geometric center of the gap (resulting from vector opposition).
Note: Results demonstrate friction force of dual same magnets (friction ~0.15 for Ni-Ni coating).

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
Timepiece	20 Gs (2.0 mT)	2.0 cm
Mobile device	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

Powerful magnet radiation is a serious hazard to IT equipment as well as medical implants. These neodymiums produce a flux that destroys function of sensitive medical devices. Be aware: the invisible magnetic field passes through tissues and plastic. Exceptional care must be exercised by people with hearing aids and drug dispensers. Also at risk are: automatic timepieces, car keys, membranes, and screens. Do not bring the product near payment cards, hard drives, or sensitive navigation tools.

Table 8: Impact energy (cracking risk) - warning
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

Neodymium magnets are delicate – a strong collision with metal can result in shattering. Control the attraction moment – a magnet released freely speeds with massive force. Impact energy can destroy the magnet or injury to skin. Always hold the magnet during bringing near metal so it doesn't hit violently against the metal. A contact at a velocity of dozens of km/h ends with a crack of the magnet. Wear safety glasses when working with powerful specimens.

Table 9: Surface protection spec
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)

The SST (salt spray test) is an industry standard for determining coating lifespan in harsh conditions. Improper coating selection is the most common cause of magnet failure over time.

Table 10: Electrical 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)

Total magnetic flux passing through the pole surface. Essential parameter in coil applications as well as sensors. The P_c coefficient defines 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. Shear force

*Caution: On a vertical surface, the magnet holds just approx. 20-30% of its nominal pull.

2. Efficiency vs thickness

*Thin metal sheet (e.g. 0.5mm PC case) drastically reduces the holding force.

3. Thermal stability

*For N38 material, the critical limit is 80°C.

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

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

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.

Technical specification and ecology

Elemental analysis

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%

Sustainability

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

Measurement Calculator

Force (pull)

Force in kg

Newtons (N)

Force in lbs

Magnetic Field

Induction (T)

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JM 15x40 - jajka w pudełku/cena za parę - magnetic eggs

7.00 ZŁ brutto / pcs

This product is an incredibly powerful rod magnet, composed of modern NdFeB material, which, with dimensions of Ø4x5 mm, guarantees the highest energy density. This specific item is characterized by an accuracy of ±0.1mm and industrial build quality, making it a perfect solution for the most demanding engineers and designers. As a cylindrical magnet with significant force (approx. 0.46 kg), this product is available off-the-shelf from our warehouse in Poland, ensuring rapid order fulfillment. Moreover, its triple-layer Ni-Cu-Ni coating effectively protects 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 fastening or actuating element. Thanks to the high power of 4.48 N with a weight of only 0.47 g, this rod is indispensable in miniature devices and wherever every gram matters.

Since our magnets have a tolerance of ±0.1mm, the best method is to glue them into holes with a slightly larger diameter (e.g., 4.1 mm) using epoxy glues. To ensure long-term durability in industry, specialized industrial adhesives are used, which are safe for nickel and fill the gap, guaranteeing durability of the connection.

Grade N38 is the most popular standard for professional neodymium magnets, offering a great economic balance and operational stability. 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 warehouse.

This model is characterized by dimensions Ø4x5 mm, which, at a weight of 0.47 g, makes it an element with impressive magnetic energy density. The key parameter here is the holding force amounting to approximately 0.46 kg (force ~4.48 N), which, with such compact dimensions, proves the high power of the NdFeB material. The product has a [NiCuNi] coating, which secures it against external factors, giving it an aesthetic, silvery shine.

Standardly, the magnetic axis runs through the center of the cylinder, causing the greatest attraction force to occur on the bases with a diameter of 4 mm. Such an arrangement is standard 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 through the diameter if your project requires it.

Advantages as well as disadvantages of neodymium magnets.

Pros

Besides their exceptional strength, neodymium magnets offer the following advantages:

They do not lose strength, even during approximately ten years – the reduction in strength is only ~1% (based on measurements),
Magnets very well protect themselves against demagnetization caused by external fields,
A magnet with a shiny silver surface has an effective appearance,
Neodymium magnets deliver maximum magnetic induction on a their surface, which increases force concentration,
Made from properly selected components, these magnets show impressive resistance to high heat, enabling them to function (depending on their form) at temperatures up to 230°C and above...
Possibility of precise forming and optimizing to specific conditions,
Significant place in modern industrial fields – they are utilized in mass storage devices, drive modules, diagnostic systems, also complex engineering applications.
Thanks to efficiency per cm³, small magnets offer high operating force, with minimal size,

Cons

Disadvantages of NdFeB magnets:

Susceptibility to cracking is one of their disadvantages. Upon intense impact they can break. We recommend keeping them in a strong case, which not only protects them against impacts but also increases their durability
When exposed to high temperature, neodymium magnets experience a drop in power. Often, when the temperature exceeds 80°C, their strength decreases (depending on the size, as well as shape of the magnet). For those who need magnets for extreme conditions, we offer [AH] versions withstanding up to 230°C
When exposed to humidity, magnets usually rust. To use them in conditions outside, it is recommended to use protective magnets, such as magnets in rubber or plastics, which secure oxidation and corrosion.
Due to limitations in creating threads and complicated forms in magnets, we recommend using cover - magnetic holder.
Possible danger to health – tiny shards of magnets can be dangerous, when accidentally swallowed, which gains importance in the aspect of protecting the youngest. Furthermore, small elements of these devices can be problematic in diagnostics medical after entering the body.
With mass production the cost of neodymium magnets is economically unviable,

Lifting parameters

Highest magnetic holding force – what contributes to it?

Holding force of 0.46 kg is a result of laboratory testing conducted under the following configuration:

using a plate made of high-permeability steel, functioning as a circuit closing element
possessing a massiveness of min. 10 mm to avoid saturation
characterized by smoothness
without any air gap between the magnet and steel
under axial application of breakaway force (90-degree angle)
at room temperature

Magnet lifting force in use – key factors

It is worth knowing that the working load may be lower subject to elements below, starting with the most relevant:

Clearance – existence of foreign body (rust, tape, air) interrupts the magnetic circuit, which reduces power steeply (even by 50% at 0.5 mm).
Force direction – note that the magnet holds strongest perpendicularly. Under sliding down, the capacity drops significantly, often to levels of 20-30% of the maximum value.
Metal thickness – the thinner the sheet, the weaker the hold. Part of the magnetic field passes through the material instead of converting into lifting capacity.
Steel type – low-carbon steel gives the best results. Higher carbon content lower magnetic properties and lifting capacity.
Smoothness – ideal contact is obtained only on polished steel. Rough texture reduce the real contact area, reducing force.
Temperature influence – high temperature weakens magnetic field. Exceeding the limit temperature can permanently demagnetize the magnet.

Holding force was checked on the plate surface of 20 mm thickness, when a perpendicular force was applied, however under shearing force the load capacity is reduced by as much as 75%. In addition, even a small distance between the magnet and the plate decreases the holding force.

Safe handling of NdFeB magnets

Sensitization to coating

Certain individuals experience a sensitization to nickel, which is the common plating for neodymium magnets. Prolonged contact might lead to dermatitis. We recommend wear safety gloves.

Eye protection

Protect your eyes. Magnets can fracture upon violent connection, launching shards into the air. We recommend safety glasses.

Protect data

Do not bring magnets close to a wallet, laptop, or screen. The magnetic field can destroy these devices and erase data from cards.

Demagnetization risk

Keep cool. NdFeB magnets are susceptible to temperature. If you need resistance above 80°C, ask us about HT versions (H, SH, UH).

Bodily injuries

Danger of trauma: The pulling power is so great that it can result in hematomas, pinching, and even bone fractures. Use thick gloves.

Do not give to children

Only for adults. Small elements pose a choking risk, causing intestinal necrosis. Store away from kids and pets.

Medical implants

People with a heart stimulator have to maintain an absolute distance from magnets. The magnetic field can interfere with the operation of the life-saving device.

Compass and GPS

An intense magnetic field interferes with the operation of magnetometers in smartphones and GPS navigation. Keep magnets close to a device to avoid damaging the sensors.

Respect the power

Before starting, read the rules. Sudden snapping can break the magnet or hurt your hand. Be predictive.

Mechanical processing

Combustion risk: Neodymium dust is explosive. Do not process magnets without safety gear as this risks ignition.

Security! Looking for details? Check our post: Why are neodymium magnets dangerous?

MW 4x5 / N38 - cylindrical magnet

Detailed specification - MW 4x5 / N38 - cylindrical magnet

Magnetic properties of material N38

Physical properties of sintered neodymium magnets Nd2Fe14B at 20°C

Engineering simulation of the magnet - technical parameters

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

Table 2: Shear load (vertical surface) MW 4x5 / N38

Table 3: Wall mounting (shearing) - vertical pull MW 4x5 / N38

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

Table 5: Thermal stability (stability) - thermal limit MW 4x5 / N38

Table 6: Magnet-Magnet interaction (repulsion) - field collision MW 4x5 / N38

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

Table 8: Impact energy (cracking risk) - warning MW 4x5 / N38

Table 9: Surface protection spec MW 4x5 / N38

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

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

1. Shear force

2. Efficiency vs thickness

3. Thermal stability

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

Elemental analysis

Sustainability

Force (pull)

Magnetic Field

Other products

MPL 200x30x30 / N38 - lamellar magnet

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

MW 12x4 / N38 - cylindrical magnet

JM 15x40 - jajka w pudełku/cena za parę - magnetic eggs

Advantages as well as disadvantages of neodymium magnets.

Pros

Cons

Lifting parameters

Highest magnetic holding force – what contributes to it?

Magnet lifting force in use – key factors

Safe handling of NdFeB magnets

Sensitization to coating

Eye protection

Protect data

Demagnetization risk

Bodily injuries

Do not give to children

Medical implants

Compass and GPS

Respect the power

Mechanical processing

Physical properties of sintered neodymium magnets Nd₂Fe₁₄B at 20°C

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

Table 2: Shear load (vertical surface)
MW 4x5 / N38

Table 3: Wall mounting (shearing) - vertical pull
MW 4x5 / N38

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

Table 5: Thermal stability (stability) - thermal limit
MW 4x5 / N38

Table 6: Magnet-Magnet interaction (repulsion) - field collision
MW 4x5 / N38

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

Table 8: Impact energy (cracking risk) - warning
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Table 9: Surface protection spec
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Table 10: Electrical data (P_c)
MW 4x5 / N38

Table 11: Physics of underwater searching
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