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MW 40x10 / 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 010066

GTIN/EAN: 5906301810650

Diameter Ø

40 mm [±0,1 mm]

Height

10 mm [±0,1 mm]

Weight

94.25 g

Magnetization Direction

↑ axial

Load capacity

27.73 kg / 271.99 N

Magnetic Induction

277.22 mT / 2772 Gs

Coating

[NiCuNi] Nickel

product parameters »

36.57 ZŁ with VAT / pcs + price for transport

29.73 ZŁ net + 23% VAT / pcs

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Physical properties - MW 40x10 / N38 - cylindrical magnet

Specification / characteristics - MW 40x10 / N38 - cylindrical magnet

properties

properties	values
Cat. no.	010066
GTIN/EAN	5906301810650
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	40 mm [±0,1 mm]
Height	10 mm [±0,1 mm]
Weight	94.25 g
Magnetization Direction	↑ axial
Load capacity ~ ?	27.73 kg / 271.99 N
Magnetic Induction ~ ?	277.22 mT / 2772 Gs
Coating	[NiCuNi] Nickel
Manufacturing Tolerance	±0.1 mm

Magnetic properties of material N38

Specification / characteristics MW 40x10 / 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 magnet - data

Presented values represent the outcome of a mathematical calculation. Values rely on algorithms for the class Nd₂Fe₁₄B. Operational performance might slightly deviate from the simulation results. Treat these data as a supplementary guide when designing systems.

Table 1: Static pull force (pull vs distance) - characteristics
MW 40x10 / N38

Distance (mm)	Induction (Gauss) / mT	Pull Force (kg/lbs/g/N)	Risk Status
0 mm	2772 Gs 277.2 mT	27.73 kg / 61.13 pounds 27730.0 g / 272.0 N	critical level
1 mm	2678 Gs 267.8 mT	25.89 kg / 57.08 pounds 25889.6 g / 254.0 N	critical level
2 mm	2573 Gs 257.3 mT	23.89 kg / 52.68 pounds 23893.3 g / 234.4 N	critical level
3 mm	2459 Gs 245.9 mT	21.83 kg / 48.12 pounds 21827.6 g / 214.1 N	critical level
5 mm	2216 Gs 221.6 mT	17.73 kg / 39.08 pounds 17728.1 g / 173.9 N	critical level
10 mm	1611 Gs 161.1 mT	9.37 kg / 20.66 pounds 9371.0 g / 91.9 N	warning
15 mm	1121 Gs 112.1 mT	4.54 kg / 10.01 pounds 4538.6 g / 44.5 N	warning
20 mm	775 Gs 77.5 mT	2.17 kg / 4.77 pounds 2165.8 g / 21.2 N	warning
30 mm	387 Gs 38.7 mT	0.54 kg / 1.19 pounds 539.8 g / 5.3 N	safe
50 mm	125 Gs 12.5 mT	0.06 kg / 0.12 pounds 56.6 g / 0.6 N	safe

Pulling power decreases drastically per each millimeter of gap. Keep in mind that even a microscopic distance (e.g., dirt, varnish, dust) significantly diminishes the holding power. Magnets work optimally in perfect adhesion; gap kills the force. Observe how flashily the pull force fall, when the product does not adhere directly to the metal substrate. When designing the mounting, avoid additional spacers.

Table 2: Sliding force (vertical surface)
MW 40x10 / N38

Distance (mm)	Friction coefficient	Pull Force (kg/lbs/g/N)
0 mm	Stal (~0.2)	5.55 kg / 12.23 pounds 5546.0 g / 54.4 N
1 mm	Stal (~0.2)	5.18 kg / 11.42 pounds 5178.0 g / 50.8 N
2 mm	Stal (~0.2)	4.78 kg / 10.53 pounds 4778.0 g / 46.9 N
3 mm	Stal (~0.2)	4.37 kg / 9.63 pounds 4366.0 g / 42.8 N
5 mm	Stal (~0.2)	3.55 kg / 7.82 pounds 3546.0 g / 34.8 N
10 mm	Stal (~0.2)	1.87 kg / 4.13 pounds 1874.0 g / 18.4 N
15 mm	Stal (~0.2)	0.91 kg / 2.00 pounds 908.0 g / 8.9 N
20 mm	Stal (~0.2)	0.43 kg / 0.96 pounds 434.0 g / 4.3 N
30 mm	Stal (~0.2)	0.11 kg / 0.24 pounds 108.0 g / 1.1 N
50 mm	Stal (~0.2)	0.01 kg / 0.03 pounds 12.0 g / 0.1 N

The following data defines the estimated holding capacity needed to initiate the slippage of the magnet down on a vertical steel wall (considering typical friction coefficient). This value is a function of the gap size between the magnet and the metal.

Table 3: Wall mounting (shearing) - behavior on slippery surfaces
MW 40x10 / N38

Surface type	Friction coefficient / % Mocy	Max load (kg/lbs/g/N)
Raw steel	µ = 0.3 30% Nominalnej Siły	8.32 kg / 18.34 pounds 8319.0 g / 81.6 N
Painted steel (standard)	µ = 0.2 20% Nominalnej Siły	5.55 kg / 12.23 pounds 5546.0 g / 54.4 N
Oily/slippery steel	µ = 0.1 10% Nominalnej Siły	2.77 kg / 6.11 pounds 2773.0 g / 27.2 N
Magnet with anti-slip rubber	µ = 0.5 50% Nominalnej Siły	13.87 kg / 30.57 pounds 13865.0 g / 136.0 N

When hanging a magnet on a vertical plane (e.g., a car body), it will maintain only approx. 20%-30% of nominal attraction strength. Gravity and a low friction coefficient mean that holders slip easier than they pull off. Planning a vertical fastening? Consider that the shear force is much weaker than the maximum static pull force. On a painted metal, the holder will slide down under a significantly smaller load. Using a rubber pad can drastically improve the result.

Table 4: Steel thickness (substrate influence) - sheet metal selection
MW 40x10 / N38

Steel thickness (mm)	% power	Real pull force (kg/lbs/g/N)
0.5 mm	5%	1.39 kg / 3.06 pounds 1386.5 g / 13.6 N
1 mm	13%	3.47 kg / 7.64 pounds 3466.3 g / 34.0 N
2 mm	25%	6.93 kg / 15.28 pounds 6932.5 g / 68.0 N
3 mm	38%	10.40 kg / 22.93 pounds 10398.8 g / 102.0 N
5 mm	63%	17.33 kg / 38.21 pounds 17331.3 g / 170.0 N
10 mm	100%	27.73 kg / 61.13 pounds 27730.0 g / 272.0 N
11 mm	100%	27.73 kg / 61.13 pounds 27730.0 g / 272.0 N
12 mm	100%	27.73 kg / 61.13 pounds 27730.0 g / 272.0 N

A thin metal plate is incapable of take in the entire magnetic field, which weakens actual performance of the holder. Should you attach a powerful product to a thin surface, the field will penetrate right through and the attraction force will be weaker. To utilize 100% of this neodymium's power, you need a suitably thick piece of steel. The saturation effect means that on thin elements (e.g., appliance housings), the magnet works worse. We recommend selecting the steel cross-section from these parameters.

Table 5: Working in heat (material behavior) - resistance threshold
MW 40x10 / N38

Ambient temp. (°C)	Power loss	Remaining pull (kg/lbs/g/N)	Status
20 °C	0.0%	27.73 kg / 61.13 pounds 27730.0 g / 272.0 N	OK
40 °C	-2.2%	27.12 kg / 59.79 pounds 27119.9 g / 266.0 N	OK
60 °C	-4.4%	26.51 kg / 58.44 pounds 26509.9 g / 260.1 N
80 °C	-6.6%	25.90 kg / 57.10 pounds 25899.8 g / 254.1 N
100 °C	-28.8%	19.74 kg / 43.53 pounds 19743.8 g / 193.7 N

Ordinary NdFeB products irreversibly lose parameters past the thermal threshold. Avoid high temperatures – excessive heat can irreversibly demagnetize this magnet. With every degree above norm, the neodymium's force momentarily lowers. Do not use this product in hot environments higher than its safe range. Ignoring the limit will lead to irreversible degradation of magnetism.

*Engineering note: Temperature resistance is determined by both grade, and the Permeance Coefficient Pc. Thin magnets (low Pc) risk losing magnetic properties under lower heat stress compared to rod magnets. Red status in the table signals a risk of irreversible loss for this specific geometry.

Table 6: Two magnets (attraction) - forces in the system
MW 40x10 / N38

Gap (mm)	Attraction (kg/lbs) (N-S)	Shear Force (kg/lbs/g/N)	Repulsion (kg/lbs) (N-N)
0 mm	59.52 kg / 131.22 pounds 4 382 Gs	8.93 kg / 19.68 pounds 8928 g / 87.6 N	N/A
1 mm	57.61 kg / 127.01 pounds 5 454 Gs	8.64 kg / 19.05 pounds 8642 g / 84.8 N	51.85 kg / 114.31 pounds ~0 Gs
2 mm	55.57 kg / 122.52 pounds 5 357 Gs	8.34 kg / 18.38 pounds 8336 g / 81.8 N	50.01 kg / 110.26 pounds ~0 Gs
3 mm	53.46 kg / 117.85 pounds 5 254 Gs	8.02 kg / 17.68 pounds 8019 g / 78.7 N	48.11 kg / 106.07 pounds ~0 Gs
5 mm	49.08 kg / 108.20 pounds 5 034 Gs	7.36 kg / 16.23 pounds 7362 g / 72.2 N	44.17 kg / 97.38 pounds ~0 Gs
10 mm	38.05 kg / 83.89 pounds 4 433 Gs	5.71 kg / 12.58 pounds 5708 g / 56.0 N	34.25 kg / 75.50 pounds ~0 Gs
20 mm	20.11 kg / 44.35 pounds 3 223 Gs	3.02 kg / 6.65 pounds 3017 g / 29.6 N	18.10 kg / 39.91 pounds ~0 Gs
50 mm	2.27 kg / 5.01 pounds 1 083 Gs	0.34 kg / 0.75 pounds 341 g / 3.3 N	2.05 kg / 4.51 pounds ~0 Gs
60 mm	1.16 kg / 2.55 pounds 773 Gs	0.17 kg / 0.38 pounds 174 g / 1.7 N	1.04 kg / 2.30 pounds ~0 Gs
70 mm	0.62 kg / 1.36 pounds 565 Gs	0.09 kg / 0.20 pounds 93 g / 0.9 N	0.56 kg / 1.23 pounds ~0 Gs
80 mm	0.35 kg / 0.76 pounds 422 Gs	0.05 kg / 0.11 pounds 52 g / 0.5 N	0.31 kg / 0.69 pounds ~0 Gs
90 mm	0.20 kg / 0.44 pounds 322 Gs	0.03 kg / 0.07 pounds 30 g / 0.3 N	0.18 kg / 0.40 pounds ~0 Gs
100 mm	0.12 kg / 0.27 pounds 251 Gs	0.02 kg / 0.04 pounds 18 g / 0.2 N	0.11 kg / 0.24 pounds ~0 Gs

Two strong neodymiums interact from a wider radius than a neodymium and metal setup. The connection of magnet-to-magnet creates a more powerful interaction and a wider radius of action. Want to build a strong closure? Use a pair of magnets instead of a neodymium and a steel. Remember that when attracting two neodymiums, the collision energy is massive. The levitation is a bit weaker than the attraction, but still impressive.
*The magnetic induction in repulsion mode reaches ~0 Gs at the geometric center between the magnets (resulting from vector opposition).
Note: Estimates apply to sliding force of dual same magnets (friction ~0.15 for Ni-Ni plating).

Table 7: Hazards (electronics) - warnings
MW 40x10 / N38

Object / Device	Limit (Gauss) / mT	Safe distance
Pacemaker	5 Gs (0.5 mT)	16.5 cm
Hearing aid	10 Gs (1.0 mT)	13.0 cm
Timepiece	20 Gs (2.0 mT)	10.5 cm
Phone / Smartphone	40 Gs (4.0 mT)	8.0 cm
Remote	50 Gs (5.0 mT)	7.5 cm
Payment card	400 Gs (40.0 mT)	3.0 cm
HDD hard drive	600 Gs (60.0 mT)	2.5 cm

Extremely neodym field poses a large risk to IT equipment as well as pacemakers. These neodymiums generate a flux that destroys function of sensitive medical devices. Be aware: the unseen radiation acts through matter and plastic. Exceptional care must be exercised by people with hearing aids and drug dispensers. The risk also applies to: automatic timepieces, remotes, membranes, and screens. Do not bring the product near payment cards, hard drives, or precise measuring instruments.

Table 8: Dynamics (cracking risk) - collision effects
MW 40x10 / N38

Start from (mm)	Speed (km/h)	Energy (J)
10 mm	20.63 km/h (5.73 m/s)	1.55 J
30 mm	30.32 km/h (8.42 m/s)	3.34 J
50 mm	38.73 km/h (10.76 m/s)	5.45 J
100 mm	54.71 km/h (15.20 m/s)	10.88 J

Magnetic elements are very brittle – a strong collision with metal risks their cracking. Pay attention to connection velocity – a neodymium left loose speeds with massive force. Kinetic force can trigger coating fragments or painful pinches to skin. Be sure to control the product during installation so it doesn't slam with momentum against the metal. A collision at high speed almost guarantees destruction of the neodymium. Use safety goggles when working with large magnets.

Table 9: Coating parameters (durability)
MW 40x10 / 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. Improper coating selection is the most common cause of magnet failure over time.

Table 10: Electrical data (Flux)
MW 40x10 / N38

Parameter	Value	SI Unit / Description
Magnetic Flux	38 700 Mx	387.0 µWb
P_c Coefficient	0.35	Low (Flat)

Flux value emitted by the magnet pole. Essential parameter in coil applications as well as sensors. P_c value defines the working geometry.

Table 11: Submerged application
MW 40x10 / N38

Environment	Effective steel pull	Effect
Air (land)	27.73 kg	Standard
Water (riverbed)	31.75 kg (+4.02 kg buoyancy gain)	+14.5%

Corrosion warning: This magnet has a standard nickel coating. After use in water, it must be dried and maintained immediately, otherwise it will rust!

The magnetic field penetrates through water without any losses. Buoyancy helps in lifting finds.

1. Shear force

*Warning: On a vertical wall, the magnet holds just a fraction of its perpendicular strength.

2. Efficiency vs thickness

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

3. Temperature resistance

*For standard magnets, the max working temp is 80°C.

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

chart generated for the permeance coefficient P_c (Permeance Coefficient) = 0.35

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

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%

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: 010066-2026

Magnet Unit Converter

Force (pull)

Kilograms (kg)

Force (N)

Pounds (lbs)

Magnetic Field

Gauss (Gs)

Insert a value in one of the inputs, and all other values change on the fly.

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SM 25x100 [2xM8] / N52 - magnetic separator

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MW 12x2 / N38 - cylindrical magnet

1.132 ZŁ brutto / pcs

This product is an incredibly powerful cylindrical magnet, composed of durable NdFeB material, which, with dimensions of Ø40x10 mm, guarantees optimal power. The MW 40x10 / N38 component features a tolerance of ±0.1mm and industrial build quality, making it a perfect solution for the most demanding engineers and designers. As a magnetic rod with significant force (approx. 27.73 kg), this product is in stock from our European logistics center, ensuring quick order fulfillment. Moreover, its triple-layer Ni-Cu-Ni coating shields it against corrosion in standard operating conditions, guaranteeing an aesthetic appearance and durability for years.

It successfully proves itself in DIY projects, advanced automation, and broadly understood industry, serving as a positioning or actuating element. Thanks to the pull force of 271.99 N with a weight of only 94.25 g, this rod is indispensable in electronics and wherever low weight is crucial.

Due to the brittleness of the NdFeB material, you must not use force-fitting (so-called press-fit), as this risks immediate cracking of this precision component. To ensure stability in automation, specialized industrial adhesives are used, which are safe for nickel and fill the gap, guaranteeing durability of the connection.

Magnets N38 are suitable for the majority of applications in automation and machine building, where extreme miniaturization with maximum force is not required. If you need even stronger magnets in the same volume (Ø40x10), contact us regarding higher grades (e.g., N50, N52), however, N38 is the standard in continuous sale in our warehouse.

This model is characterized by dimensions Ø40x10 mm, which, at a weight of 94.25 g, makes it an element with high magnetic energy density. The key parameter here is the holding force amounting to approximately 27.73 kg (force ~271.99 N), which, with such compact dimensions, proves the high power of the NdFeB material. The product has a [NiCuNi] coating, which protects the surface against external factors, giving it an aesthetic, silvery shine.

This rod magnet is magnetized axially (along the height of 10 mm), which means that the N and S poles are located on the flat, circular surfaces. Thanks to this, the magnet can be easily glued into a hole and achieve a strong field on the front surface. On request, we can also produce versions magnetized through the diameter if your project requires it.

Pros and cons of neodymium magnets.

Strengths

Apart from their superior magnetism, neodymium magnets have these key benefits:

They have constant strength, and over nearly ten years their attraction force decreases symbolically – ~1% (in testing),
They do not lose their magnetic properties even under close interference source,
In other words, due to the shiny surface of gold, the element gains visual value,
The surface of neodymium magnets generates a powerful magnetic field – this is a key feature,
Neodymium magnets are characterized by very high magnetic induction on the magnet surface and can function (depending on the form) even at a temperature of 230°C or more...
Due to the ability of accurate molding and customization to specialized solutions, NdFeB magnets can be modeled in a variety of shapes and sizes, which amplifies use scope,
Key role in advanced technology sectors – they are utilized in hard drives, electric drive systems, medical devices, and complex engineering applications.
Relatively small size with high pulling force – neodymium magnets offer high power in compact dimensions, which enables their usage in miniature devices

Limitations

Characteristics of disadvantages of neodymium magnets and ways of using them

At strong impacts they can crack, therefore we advise placing them in strong housings. A metal housing provides additional protection against damage and increases the magnet's 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
They oxidize in a humid environment. For use outdoors we advise using waterproof magnets e.g. in rubber, plastic
Due to limitations in producing nuts and complex forms in magnets, we propose using casing - magnetic mount.
Potential hazard related to microscopic parts of magnets can be dangerous, in case of ingestion, which is particularly important in the context of child health protection. It is also worth noting that tiny parts of these magnets can disrupt the diagnostic process medical in case of swallowing.
Due to complex production process, their price is higher than average,

Holding force characteristics

Magnetic strength at its maximum – what it depends on?

The load parameter shown represents the peak performance, obtained under laboratory conditions, meaning:

using a base made of mild steel, serving as a ideal flux conductor
with a cross-section no less than 10 mm
with an ideally smooth contact surface
without the slightest insulating layer between the magnet and steel
during detachment in a direction vertical to the mounting surface
at standard ambient temperature

Determinants of lifting force in real conditions

Please note that the application force may be lower influenced by the following factors, in order of importance:

Clearance – the presence of foreign body (paint, dirt, gap) interrupts the magnetic circuit, which lowers capacity rapidly (even by 50% at 0.5 mm).
Loading method – declared lifting capacity refers to pulling vertically. When attempting to slide, the magnet exhibits significantly lower power (typically approx. 20-30% of maximum force).
Wall 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 attracts best. Alloy steels lower magnetic permeability and lifting capacity.
Surface structure – the more even the surface, the better the adhesion and stronger the hold. Roughness creates an air distance.
Thermal conditions – neodymium magnets have a negative temperature coefficient. When it is hot they lose power, and in frost gain strength (up to a certain limit).

Lifting capacity testing was carried out on a smooth plate of suitable thickness, under a perpendicular pulling force, however under parallel forces the holding force is lower. Moreover, even a small distance between the magnet’s surface and the plate reduces the holding force.

Warnings

Caution required

Before starting, check safety instructions. Uncontrolled attraction can break the magnet or injure your hand. Think ahead.

Compass and GPS

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

Magnets are brittle

Watch out for shards. Magnets can explode upon uncontrolled impact, launching sharp fragments into the air. Eye protection is mandatory.

Warning for allergy sufferers

Allergy Notice: The nickel-copper-nickel coating consists of nickel. If redness occurs, immediately stop handling magnets and wear gloves.

Maximum temperature

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

Machining danger

Drilling and cutting of neodymium magnets poses a fire hazard. Neodymium dust reacts violently with oxygen and is hard to extinguish.

Finger safety

Mind your fingers. Two large magnets will snap together immediately with a force of several hundred kilograms, crushing everything in their path. Be careful!

This is not a toy

Strictly store magnets away from children. Choking hazard is high, and the effects of magnets connecting inside the body are tragic.

Warning for heart patients

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

Threat to electronics

Powerful magnetic fields can erase data on credit cards, hard drives, and storage devices. Maintain a gap of at least 10 cm.

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

MW 40x10 / N38 - cylindrical magnet

Physical properties - MW 40x10 / N38 - cylindrical magnet

Magnetic properties of material N38

Physical properties of sintered neodymium magnets Nd2Fe14B at 20°C

Physical modeling of the magnet - data

Table 1: Static pull force (pull vs distance) - characteristics MW 40x10 / N38

Table 2: Sliding force (vertical surface) MW 40x10 / N38

Table 3: Wall mounting (shearing) - behavior on slippery surfaces MW 40x10 / N38

Table 4: Steel thickness (substrate influence) - sheet metal selection MW 40x10 / N38

Table 5: Working in heat (material behavior) - resistance threshold MW 40x10 / N38

Table 6: Two magnets (attraction) - forces in the system MW 40x10 / N38

Table 7: Hazards (electronics) - warnings MW 40x10 / N38

Table 8: Dynamics (cracking risk) - collision effects MW 40x10 / N38

Table 9: Coating parameters (durability) MW 40x10 / N38

Table 10: Electrical data (Flux) MW 40x10 / N38

Table 11: Submerged application MW 40x10 / N38

1. Shear force

2. Efficiency vs thickness

3. Temperature resistance

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

Elemental analysis

Environmental data

Force (pull)

Magnetic Field

See also deals

MW 10x5 / N38 - cylindrical magnet

MPL 17x17x3 / N38 - lamellar magnet

SM 25x100 [2xM8] / N52 - magnetic separator

MW 12x2 / N38 - cylindrical magnet

Pros and cons of neodymium magnets.

Strengths

Limitations

Holding force characteristics

Magnetic strength at its maximum – what it depends on?

Determinants of lifting force in real conditions

Warnings

Caution required

Compass and GPS

Magnets are brittle

Warning for allergy sufferers

Maximum temperature

Machining danger

Finger safety

This is not a toy

Warning for heart patients

Threat to electronics

Physical properties of sintered neodymium magnets Nd₂Fe₁₄B at 20°C

Table 1: Static pull force (pull vs distance) - characteristics
MW 40x10 / N38

Table 2: Sliding force (vertical surface)
MW 40x10 / N38

Table 3: Wall mounting (shearing) - behavior on slippery surfaces
MW 40x10 / N38

Table 4: Steel thickness (substrate influence) - sheet metal selection
MW 40x10 / N38

Table 5: Working in heat (material behavior) - resistance threshold
MW 40x10 / N38

Table 6: Two magnets (attraction) - forces in the system
MW 40x10 / N38

Table 7: Hazards (electronics) - warnings
MW 40x10 / N38

Table 8: Dynamics (cracking risk) - collision effects
MW 40x10 / N38

Table 9: Coating parameters (durability)
MW 40x10 / N38

Table 10: Electrical data (Flux)
MW 40x10 / N38

Table 11: Submerged application
MW 40x10 / N38