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MW 20x2 / 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 010041

GTIN/EAN: 5906301810407

5.00

Diameter Ø

20 mm [±0,1 mm]

Height

2 mm [±0,1 mm]

Weight

4.71 g

Magnetization Direction

↑ axial

Load capacity

1.63 kg / 16.02 N

Magnetic Induction

121.57 mT / 1216 Gs

Coating

[NiCuNi] Nickel

technical parameters »

2.08 ZŁ with VAT / pcs + price for transport

1.690 ZŁ net + 23% VAT / pcs

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Need advice?

Pick up the phone and ask +48 888 99 98 98 otherwise contact us using our online form the contact page.
Force as well as appearance of neodymium magnets can be tested on our force calculator.

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

Product card - MW 20x2 / N38 - cylindrical magnet

Specification / characteristics - MW 20x2 / N38 - cylindrical magnet

properties

properties	values
Cat. no.	010041
GTIN/EAN	5906301810407
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	20 mm [±0,1 mm]
Height	2 mm [±0,1 mm]
Weight	4.71 g
Magnetization Direction	↑ axial
Load capacity ~ ?	1.63 kg / 16.02 N
Magnetic Induction ~ ?	121.57 mT / 1216 Gs
Coating	[NiCuNi] Nickel
Manufacturing Tolerance	±0.1 mm

Magnetic properties of material N38

Specification / characteristics MW 20x2 / 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

Technical analysis of the magnet - technical parameters

Presented values represent the direct effect of a mathematical simulation. Values are based on algorithms for the class Nd₂Fe₁₄B. Real-world performance might slightly differ from theoretical values. Please consider these calculations as a preliminary roadmap during assembly planning.

Table 1: Static pull force (pull vs gap) - characteristics
MW 20x2 / N38

Distance (mm)	Induction (Gauss) / mT	Pull Force (kg/lbs/g/N)	Risk Status
0 mm	1216 Gs 121.6 mT	1.63 kg / 3.59 pounds 1630.0 g / 16.0 N	safe
1 mm	1165 Gs 116.5 mT	1.50 kg / 3.30 pounds 1496.3 g / 14.7 N	safe
2 mm	1087 Gs 108.7 mT	1.30 kg / 2.87 pounds 1302.7 g / 12.8 N	safe
3 mm	991 Gs 99.1 mT	1.08 kg / 2.39 pounds 1083.7 g / 10.6 N	safe
5 mm	783 Gs 78.3 mT	0.68 kg / 1.49 pounds 675.9 g / 6.6 N	safe
10 mm	379 Gs 37.9 mT	0.16 kg / 0.35 pounds 158.4 g / 1.6 N	safe
15 mm	185 Gs 18.5 mT	0.04 kg / 0.08 pounds 37.9 g / 0.4 N	safe
20 mm	99 Gs 9.9 mT	0.01 kg / 0.02 pounds 10.8 g / 0.1 N	safe
30 mm	36 Gs 3.6 mT	0.00 kg / 0.00 pounds 1.4 g / 0.0 N	safe
50 mm	9 Gs 0.9 mT	0.00 kg / 0.00 pounds 0.1 g / 0.0 N	safe

Magnetic force drops significantly with every mm of distance. Keep in mind that even a very thin break (e.g., dirt, varnish, rust) strongly weakens the grip. Neodymiums operate optimally during direct contact; distance kills the power. Analyze how rapidly the pull force fall, when the magnet does not adhere tightly to the metal substrate. When planning the arrangement, eliminate unnecessary gaps.

Table 2: Shear force (vertical surface)
MW 20x2 / N38

Distance (mm)	Friction coefficient	Pull Force (kg/lbs/g/N)
0 mm	Stal (~0.2)	0.33 kg / 0.72 pounds 326.0 g / 3.2 N
1 mm	Stal (~0.2)	0.30 kg / 0.66 pounds 300.0 g / 2.9 N
2 mm	Stal (~0.2)	0.26 kg / 0.57 pounds 260.0 g / 2.6 N
3 mm	Stal (~0.2)	0.22 kg / 0.48 pounds 216.0 g / 2.1 N
5 mm	Stal (~0.2)	0.14 kg / 0.30 pounds 136.0 g / 1.3 N
10 mm	Stal (~0.2)	0.03 kg / 0.07 pounds 32.0 g / 0.3 N
15 mm	Stal (~0.2)	0.01 kg / 0.02 pounds 8.0 g / 0.1 N
20 mm	Stal (~0.2)	0.00 kg / 0.00 pounds 2.0 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 table below calculates the approximate force sufficient to initiate the downward movement of the magnet vertically on a vertical steel plate (considering typical friction). This value is relative to the air gap between the magnet and the metal.

Table 3: Wall mounting (sliding) - behavior on slippery surfaces
MW 20x2 / N38

Surface type	Friction coefficient / % Mocy	Max load (kg/lbs/g/N)
Raw steel	µ = 0.3 30% Nominalnej Siły	0.49 kg / 1.08 pounds 489.0 g / 4.8 N
Painted steel (standard)	µ = 0.2 20% Nominalnej Siły	0.33 kg / 0.72 pounds 326.0 g / 3.2 N
Oily/slippery steel	µ = 0.1 10% Nominalnej Siły	0.16 kg / 0.36 pounds 163.0 g / 1.6 N
Magnet with anti-slip rubber	µ = 0.5 50% Nominalnej Siły	0.82 kg / 1.80 pounds 815.0 g / 8.0 N

When placing a magnet on a vertical surface (e.g., a fridge), it will only hold just about 1/5 of its maximum pull force. Gravitational force and a low friction coefficient mean that magnets slip faster than they detach. Designing a hanger? Note that the shear force is noticeably lower than the maximum static pull force. On a smooth steel, the element will slip down under a noticeably lighter cargo. Utilizing a rubberized coating can significantly improve the result.

Table 4: Material efficiency (substrate influence) - sheet metal selection
MW 20x2 / N38

Steel thickness (mm)	% power	Real pull force (kg/lbs/g/N)
0.5 mm	10%	0.16 kg / 0.36 pounds 163.0 g / 1.6 N
1 mm	25%	0.41 kg / 0.90 pounds 407.5 g / 4.0 N
2 mm	50%	0.82 kg / 1.80 pounds 815.0 g / 8.0 N
3 mm	75%	1.22 kg / 2.70 pounds 1222.5 g / 12.0 N
5 mm	100%	1.63 kg / 3.59 pounds 1630.0 g / 16.0 N
10 mm	100%	1.63 kg / 3.59 pounds 1630.0 g / 16.0 N
11 mm	100%	1.63 kg / 3.59 pounds 1630.0 g / 16.0 N
12 mm	100%	1.63 kg / 3.59 pounds 1630.0 g / 16.0 N

A thin metal plate is unable to absorb the entire magnetic field, which wastes potential of the holder. Should you install a neodymium to a too thin substrate, the field will pass right through and the holding will be smaller. To achieve the maximum of this neodymium's power, you require a sufficiently solid element of steel. The material oversaturation means that on delicate walls (e.g., car bodies), the magnet works worse. We advise picking the steel thickness according to the table below.

Table 5: Thermal stability (material behavior) - thermal limit
MW 20x2 / N38

Ambient temp. (°C)	Power loss	Remaining pull (kg/lbs/g/N)	Status
20 °C	0.0%	1.63 kg / 3.59 pounds 1630.0 g / 16.0 N	OK
40 °C	-2.2%	1.59 kg / 3.51 pounds 1594.1 g / 15.6 N	OK
60 °C	-4.4%	1.56 kg / 3.44 pounds 1558.3 g / 15.3 N
80 °C	-6.6%	1.52 kg / 3.36 pounds 1522.4 g / 14.9 N
100 °C	-28.8%	1.16 kg / 2.56 pounds 1160.6 g / 11.4 N

Classic neodymiums change their properties parameters past the thermal threshold. Protect against heat – excessive heat can irreversibly demagnetize this product. With every degree above norm, the magnet's force briefly drops. Refrain from using this product close to heaters higher than its operating temperature limit. Exceeding the critical threshold will cause destruction of magnetic properties.

*Important note: Temperature resistance is determined by both grade, as well as the dimension ratios. Thin magnets (low permeance coefficient) are more susceptible to demagnetization under lower heat stress than long magnets. Warning indicator in the table points to a risk of irreversible loss for this specific geometry.

Table 6: Two magnets (repulsion) - field range
MW 20x2 / N38

Gap (mm)	Attraction (kg/lbs) (N-S)	Lateral Force (kg/lbs/g/N)	Repulsion (kg/lbs) (N-N)
0 mm	2.86 kg / 6.31 pounds 2 301 Gs	0.43 kg / 0.95 pounds 429 g / 4.2 N	N/A
1 mm	2.76 kg / 6.09 pounds 2 388 Gs	0.41 kg / 0.91 pounds 414 g / 4.1 N	2.49 kg / 5.48 pounds ~0 Gs
2 mm	2.63 kg / 5.79 pounds 2 329 Gs	0.39 kg / 0.87 pounds 394 g / 3.9 N	2.36 kg / 5.21 pounds ~0 Gs
3 mm	2.47 kg / 5.44 pounds 2 257 Gs	0.37 kg / 0.82 pounds 370 g / 3.6 N	2.22 kg / 4.89 pounds ~0 Gs
5 mm	2.10 kg / 4.62 pounds 2 081 Gs	0.31 kg / 0.69 pounds 315 g / 3.1 N	1.89 kg / 4.16 pounds ~0 Gs
10 mm	1.19 kg / 2.62 pounds 1 565 Gs	0.18 kg / 0.39 pounds 178 g / 1.7 N	1.07 kg / 2.35 pounds ~0 Gs
20 mm	0.28 kg / 0.61 pounds 758 Gs	0.04 kg / 0.09 pounds 42 g / 0.4 N	0.25 kg / 0.55 pounds ~0 Gs
50 mm	0.01 kg / 0.01 pounds 115 Gs	0.00 kg / 0.00 pounds 1 g / 0.0 N	0.00 kg / 0.00 pounds ~0 Gs
60 mm	0.00 kg / 0.01 pounds 72 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 48 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 33 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 24 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 18 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 much further distance than a neodymium and metal combination. Such a system of magnet-to-magnet creates a more powerful interaction and a further horizon of operation. Want to build a strong closure? Utilize two neodymiums instead of one magnet and a steel. Be careful that when connecting a pair of magnets, the collision energy is massive. The levitation is slightly lower than the attraction, but still large.
*The magnetic induction for N-N configuration reaches ~0 Gs at the geometric center of the gap (caused by magnetic field nullification).
Attention: Figures refer to shear force of two same magnets (friction coefficient ~0.15 for Ni-Ni plating).

Table 7: Safety (HSE) (electronics) - warnings
MW 20x2 / N38

Object / Device	Limit (Gauss) / mT	Safe distance
Pacemaker	5 Gs (0.5 mT)	6.5 cm
Hearing aid	10 Gs (1.0 mT)	5.0 cm
Mechanical watch	20 Gs (2.0 mT)	4.0 cm
Mobile device	40 Gs (4.0 mT)	3.0 cm
Car key	50 Gs (5.0 mT)	3.0 cm
Payment card	400 Gs (40.0 mT)	1.0 cm
HDD hard drive	600 Gs (60.0 mT)	1.0 cm

Extremely neodym field is a real danger to electronic devices as well as medical implants. These magnets generate a field that disrupts operation of sensitive medical devices. Remember: the invisible magnetic field passes through tissues and housings. Special caution must be taken by people with cochlear implants and drug dispensers. Influence will be felt by: mechanical watches, car keys, membranes, and displays. Do not place the magnet near cards, HDD media, or sensitive navigation tools.

Table 8: Impact energy (cracking risk) - collision effects
MW 20x2 / N38

Start from (mm)	Speed (km/h)	Energy (J)
10 mm	19.87 km/h (5.52 m/s)	0.07 J
30 mm	32.51 km/h (9.03 m/s)	0.19 J
50 mm	41.95 km/h (11.65 m/s)	0.32 J
100 mm	59.33 km/h (16.48 m/s)	0.64 J

Magnetic elements are very brittle – a collision with steel risks their cracking. Pay attention to connection velocity – a magnet released freely becomes dangerous. Kinetic force can destroy the magnet or dangerous crushing to fingers. Always hold the magnet during mounting so it doesn't hit with great force against the metal. A collision at high speed means shattering of the magnet. Use safety goggles when playing with powerful specimens.

Table 9: Anti-corrosion coating durability
MW 20x2 / 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 following table defines the conditions under which this product can be safely used. Note the thickness of the protective layer.

Table 10: Electrical data (Flux)
MW 20x2 / N38

Parameter	Value	SI Unit / Description
Magnetic Flux	5 038 Mx	50.4 µWb
P_c Coefficient	0.16	Low (Flat)

Flux value emitted by 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 20x2 / N38

Environment	Effective steel pull	Effect
Air (land)	1.63 kg	Standard
Water (riverbed)	1.87 kg (+0.24 kg buoyancy gain)	+14.5%

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

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. Shear force

*Warning: On a vertical surface, the magnet holds only ~20% of its max power.

2. Steel saturation

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

3. Temperature resistance

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

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

chart generated for the permeance coefficient P_c (Permeance Coefficient) = 0.16

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.

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%

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: 010041-2026

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The presented product is an extremely powerful cylindrical magnet, manufactured from durable NdFeB material, which, at dimensions of Ø20x2 mm, guarantees maximum efficiency. The MW 20x2 / N38 model features an accuracy of ±0.1mm and professional build quality, making it a perfect solution for professional engineers and designers. As a cylindrical magnet with significant force (approx. 1.63 kg), this product is available off-the-shelf from our European logistics center, ensuring quick order fulfillment. Additionally, its Ni-Cu-Ni coating effectively protects it against corrosion in standard operating conditions, guaranteeing an aesthetic appearance and durability for years.

This model is created for building generators, advanced sensors, and efficient magnetic separators, where maximum induction on a small surface counts. Thanks to the pull force of 16.02 N with a weight of only 4.71 g, this rod is indispensable in electronics and wherever every gram matters.

Due to the delicate structure of the ceramic sinter, you must not use force-fitting (so-called press-fit), as this risks chipping the coating of this professional component. To ensure long-term durability in automation, anaerobic resins are used, which are safe for nickel and fill the gap, guaranteeing durability of the connection.

Grade N38 is the most frequently chosen standard for professional neodymium magnets, offering a great economic balance and operational stability. If you need even stronger magnets in the same volume (Ø20x2), contact us regarding higher grades (e.g., N50, N52), however, N38 is the standard available off-the-shelf in our warehouse.

The presented product is a neodymium magnet with precisely defined parameters: diameter 20 mm and height 2 mm. The value of 16.02 N means that the magnet is capable of holding a weight many times exceeding its own mass of 4.71 g. The product has a [NiCuNi] coating, which protects the surface against oxidation, 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 20 mm. 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.

Benefits

Apart from their notable power, neodymium magnets have these key benefits:

They virtually do not lose strength, because even after ten years the performance loss is only ~1% (according to literature),
They do not lose their magnetic properties even under close interference source,
The use of an metallic layer of noble metals (nickel, gold, silver) causes the element to look better,
Magnetic induction on the top side of the magnet remains extremely intense,
Made from properly selected components, these magnets show impressive resistance to high heat, enabling them to function (depending on their shape) at temperatures up to 230°C and above...
Thanks to the option of free molding and adaptation to individualized solutions, neodymium magnets can be modeled in a variety of geometric configurations, which expands the range of possible applications,
Universal use in future technologies – they find application in data components, electromotive mechanisms, precision medical tools, as well as complex engineering applications.
Compactness – despite small sizes they generate large force, making them ideal for precision applications

Cons

Cons of neodymium magnets: application proposals

They are fragile upon too strong impacts. To avoid cracks, it is worth securing magnets using a steel holder. Such protection not only protects the magnet but also improves its resistance to damage
We warn that neodymium magnets can lose their strength at high temperatures. To prevent this, we recommend our specialized [AH] magnets, which work effectively even at 230°C.
When exposed to humidity, magnets start to rust. For applications outside, it is recommended to use protective magnets, such as magnets in rubber or plastics, which prevent oxidation and corrosion.
Due to limitations in realizing threads and complicated forms in magnets, we recommend using cover - magnetic mechanism.
Possible danger resulting from small fragments of magnets pose a threat, if swallowed, which is particularly important in the context of child safety. Additionally, small elements of these magnets can disrupt the diagnostic process medical in case of swallowing.
Due to complex production process, their price is higher than average,

Pull force analysis

Breakaway strength of the magnet in ideal conditions – what it depends on?

The declared magnet strength represents the maximum value, measured under laboratory conditions, meaning:

using a sheet made of mild steel, acting as a ideal flux conductor
whose transverse dimension equals approx. 10 mm
with a surface perfectly flat
without the slightest clearance between the magnet and steel
for force applied at a right angle (pull-off, not shear)
at room temperature

Impact of factors on magnetic holding capacity in practice

Effective lifting capacity impacted by specific conditions, such as (from priority):

Gap between surfaces – even a fraction of a millimeter of separation (caused e.g. by veneer or dirt) significantly weakens the magnet efficiency, often by half at just 0.5 mm.
Pull-off angle – note that the magnet has greatest strength perpendicularly. Under shear forces, the capacity drops drastically, often to levels of 20-30% of the maximum value.
Wall thickness – the thinner the sheet, the weaker the hold. Magnetic flux penetrates through instead of converting into lifting capacity.
Steel type – mild steel attracts best. Higher carbon content decrease magnetic properties and holding force.
Surface structure – the smoother and more polished the surface, the better the adhesion and higher the lifting capacity. Roughness creates an air distance.
Heat – neodymium magnets have a sensitivity to temperature. At higher temperatures they are weaker, 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, whereas under shearing force the lifting capacity is smaller. In addition, even a minimal clearance between the magnet’s surface and the plate reduces the holding force.

H&S for magnets

GPS and phone interference

An intense magnetic field negatively affects the operation of magnetometers in phones and GPS navigation. Do not bring magnets near a smartphone to avoid damaging the sensors.

Immense force

Exercise caution. Rare earth magnets act from a distance and connect with massive power, often faster than you can react.

Operating temperature

Watch the temperature. Exposing the magnet above 80 degrees Celsius will permanently weaken its magnetic structure and strength.

Allergy Warning

Warning for allergy sufferers: The Ni-Cu-Ni coating contains nickel. If redness occurs, cease working with magnets and use protective gear.

No play value

Only for adults. Tiny parts can be swallowed, causing intestinal necrosis. Keep out of reach of children and animals.

Data carriers

Intense magnetic fields can corrupt files on credit cards, HDDs, and other magnetic media. Keep a distance of at least 10 cm.

Dust is flammable

Dust generated during cutting of magnets is flammable. Do not drill into magnets without proper cooling and knowledge.

Warning for heart patients

Individuals with a pacemaker should keep an large gap from magnets. The magnetic field can interfere with the functioning of the implant.

Shattering risk

NdFeB magnets are ceramic materials, meaning they are prone to chipping. Clashing of two magnets will cause them breaking into shards.

Pinching danger

Protect your hands. Two large magnets will join instantly with a force of massive weight, crushing anything in their path. Exercise extreme caution!

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

MW 20x2 / N38 - cylindrical magnet

Product card - MW 20x2 / N38 - cylindrical magnet

Magnetic properties of material N38

Physical properties of sintered neodymium magnets Nd2Fe14B at 20°C

Technical analysis of the magnet - technical parameters

Table 1: Static pull force (pull vs gap) - characteristics MW 20x2 / N38

Table 2: Shear force (vertical surface) MW 20x2 / N38

Table 3: Wall mounting (sliding) - behavior on slippery surfaces MW 20x2 / N38

Table 4: Material efficiency (substrate influence) - sheet metal selection MW 20x2 / N38

Table 5: Thermal stability (material behavior) - thermal limit MW 20x2 / N38

Table 6: Two magnets (repulsion) - field range MW 20x2 / N38

Table 7: Safety (HSE) (electronics) - warnings MW 20x2 / N38

Table 8: Impact energy (cracking risk) - collision effects MW 20x2 / N38

Table 9: Anti-corrosion coating durability MW 20x2 / N38

Table 10: Electrical data (Flux) MW 20x2 / N38

Table 11: Physics of underwater searching MW 20x2 / N38

1. Shear force

2. Steel saturation

3. Temperature resistance

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

Elemental analysis

Environmental data

Magnet pull force

Magnetic Field

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Pros as well as cons of rare earth magnets.

Benefits

Cons

Pull force analysis

Breakaway strength of the magnet in ideal conditions – what it depends on?

Impact of factors on magnetic holding capacity in practice

H&S for magnets

GPS and phone interference

Immense force

Operating temperature

Allergy Warning

No play value

Data carriers

Dust is flammable

Warning for heart patients

Shattering risk

Pinching danger

Physical properties of sintered neodymium magnets Nd₂Fe₁₄B at 20°C

Table 1: Static pull force (pull vs gap) - characteristics
MW 20x2 / N38

Table 2: Shear force (vertical surface)
MW 20x2 / N38

Table 3: Wall mounting (sliding) - behavior on slippery surfaces
MW 20x2 / N38

Table 4: Material efficiency (substrate influence) - sheet metal selection
MW 20x2 / N38

Table 5: Thermal stability (material behavior) - thermal limit
MW 20x2 / N38

Table 6: Two magnets (repulsion) - field range
MW 20x2 / N38

Table 7: Safety (HSE) (electronics) - warnings
MW 20x2 / N38

Table 8: Impact energy (cracking risk) - collision effects
MW 20x2 / N38

Table 9: Anti-corrosion coating durability
MW 20x2 / N38

Table 10: Electrical data (Flux)
MW 20x2 / N38

Table 11: Physics of underwater searching
MW 20x2 / N38