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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

view parameters »

2.08 ZŁ with VAT / pcs + price for transport

1.690 ZŁ net + 23% VAT / pcs

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Physical properties - 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 product - technical parameters

These data constitute the outcome of a physical calculation. Results were calculated on algorithms for the class Nd₂Fe₁₄B. Real-world conditions might slightly deviate from the simulation results. Please consider these calculations as a reference point when designing systems.

Table 1: Static pull force (force vs gap) - power drop
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

Pulling power decreases significantly with every subsequent millimeter of gap. Remember that even the smallest gap (e.g., dirt, paint, dust) noticeably diminishes the holding power. Magnets hold most effectively at the point of direct contact; air break kills the force. See how quickly the parameters fall, when the magnet does not touch directly to the metal substrate. When designing the mounting, avoid unnecessary gaps.

Table 2: Sliding hold (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 defines the theoretical holding capacity sufficient to cause the shifting of the magnet down against a upright steel plate (assuming standard friction). The holding force is a function of the separation distance between the magnet and the surface.

Table 3: Vertical assembly (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 hanging a holder on a vertical surface (e.g., a fridge), it will only hold only approx. 20%-30% of nominal attraction strength. Gravitational force and a low friction coefficient influence the fact that magnets move down easier than they pop off the substrate. Designing a hanger? Remember that the sliding force is much weaker than the perpendicular breakaway force. On a smooth steel, the holder will give way down under a noticeably lighter load. Using a rubber pad can effectively improve the result.

Table 4: Material efficiency (saturation) - 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 sheet is not enough to focus the entire magnetic field, which wastes potential of the holder. If you install a neodymium to a weak sheet, the flux will penetrate right through and the holding will be smaller. To utilize the maximum of this magnet's potential, you need a suitably thick piece of steel. The material oversaturation causes that on thin elements (e.g., car bodies), the magnet shows lower pull force. We suggest choosing the steel cross-section according to the table below.

Table 5: Working in heat (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 irreversibly lose power past the thermal threshold. Avoid high temperatures – high temperature can permanently damage this product. As the temperature rises, the magnet's force momentarily decreases. Do not use this product in hot environments exceeding its safe range. Ignoring the limit will cause irreversible degradation of magnetism.

*Important note: Heat tolerance depends not only on the material grade, as well as the dimension ratios. Thin magnets (low permeance coefficient) may lose charge permanently sooner than taller cylinders. Warning indicator in the table signals permanent field degradation for this particular item.

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

Gap (mm)	Attraction (kg/lbs) (N-S)	Sliding 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 magnets attract each other from a significantly greater distance than a magnet and sheet combination. The setup of two magnets creates a more powerful interaction and a wider radius of operation. Designing a strong closure? Use a pair of magnets instead of one magnet and a steel. Be careful that when bringing together two magnets, the impact force is extreme. The levitation is a bit weaker than the connection force, but still impressive.
*Flux density in repulsion mode is approximately ~0 Gs in the exact middle of the gap (due to field cancellation).
Note: Calculations demonstrate friction force of a pair of identical magnets (friction coefficient ~0.15 for Ni-Ni plating).

Table 7: Protective zones (implants) - 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
Remote	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

A strong magnetic field is a large risk to electronic devices as well as pacemakers. These NdFeB products produce a field that prevents correct functioning of sensitive medical devices. Be aware: the unseen radiation acts through matter and housings. Special caution must be exercised by people with cochlear implants and insulin pumps. Influence will be felt by: automatic timepieces, remotes, speakers, and screens. Avoid contact with magnetic cards, hard drives, or sensitive navigation tools.

Table 8: Collisions (kinetic energy) - warning
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 strong collision with metal risks their cracking. Control the attraction moment – a magnet released freely speeds with massive force. Impact energy can destroy the magnet or dangerous crushing to skin. Always hold the magnet during installation so it doesn't slam with momentum against the metal. A collision at high speed means shattering of the magnet. Use safety goggles when working with large magnets.

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)

For outdoor applications, an epoxy coating is required; standard nickel is intended for indoor use. Note the thickness of the protective layer.

Table 10: Electrical data (P_c)
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 passing through the magnet pole. Key data in coil applications and motors. The P_c coefficient defines the working geometry.

Table 11: Underwater work (magnet fishing)
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%

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

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

1. Shear force

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

2. Steel saturation

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

3. Power loss vs temp

*For N38 material, 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) = 0.16

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 and environmental data

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

Measurement Calculator

Pulling force

Kilograms (kg)

Force in lbs

Magnetic Induction

Induction (Gs)

Input your figure into a field, to see the rest change on the fly.

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The offered product is an incredibly powerful cylinder magnet, manufactured from modern NdFeB material, which, at dimensions of Ø20x2 mm, guarantees optimal power. This specific item boasts high dimensional repeatability and industrial build quality, making it an ideal solution for professional engineers and designers. As a cylindrical magnet with impressive force (approx. 1.63 kg), this product is available off-the-shelf from our European logistics center, ensuring lightning-fast order fulfillment. Additionally, its triple-layer Ni-Cu-Ni coating effectively protects it against corrosion in standard operating conditions, ensuring an aesthetic appearance and durability for years.

It successfully proves itself in modeling, advanced automation, and broadly understood industry, serving as a fastening or actuating element. Thanks to the pull force of 16.02 N with a weight of only 4.71 g, this rod is indispensable in miniature devices and wherever every gram matters.

Due to the brittleness of the NdFeB material, 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 industry, specialized industrial adhesives are used, which are safe for nickel and fill the gap, guaranteeing durability of the connection.

Magnets NdFeB grade N38 are strong enough for 90% of applications in modeling and machine building, where extreme miniaturization with maximum force is not required. 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 key parameter here is the holding force amounting to approximately 1.63 kg (force ~16.02 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 20 mm. 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.

Advantages as well as disadvantages of rare earth magnets.

Pros

In addition to their pulling strength, neodymium magnets provide the following advantages:

They have unchanged lifting capacity, and over nearly ten years their performance decreases symbolically – ~1% (in testing),
They feature excellent resistance to magnetism drop due to external magnetic sources,
A magnet with a shiny nickel surface has better aesthetics,
Magnets are distinguished by very high magnetic induction on the active area,
Through (adequate) combination of ingredients, they can achieve high thermal strength, enabling action at temperatures reaching 230°C and above...
Thanks to freedom in constructing and the capacity to adapt to complex applications,
Fundamental importance in electronics industry – they are used in hard drives, electric drive systems, diagnostic systems, also technologically advanced constructions.
Relatively small size with high pulling force – neodymium magnets offer high power in tiny dimensions, which enables their usage in compact constructions

Cons

Problematic aspects of neodymium magnets and proposals for their use:

At very strong impacts they can crack, therefore we recommend placing them in special holders. A metal housing provides additional protection against damage and increases the magnet's durability.
Neodymium magnets lose their force under the influence of heating. As soon as 80°C is exceeded, many of them start losing their power. Therefore, we recommend our special magnets marked [AH], which maintain durability even at temperatures up to 230°C
Magnets exposed to a humid environment can rust. Therefore during using outdoors, we suggest using water-impermeable magnets made of rubber, plastic or other material resistant to moisture
Limited possibility of creating threads in the magnet and complex shapes - recommended is casing - magnet mounting.
Potential hazard to health – tiny shards of magnets are risky, when accidentally swallowed, which becomes key in the context of child health protection. It is also worth noting that small components of these devices can be problematic in diagnostics medical in case of swallowing.
High unit price – neodymium magnets have a higher price than other types of magnets (e.g. ferrite), which hinders application in large quantities

Pull force analysis

Maximum magnetic pulling force – what contributes to it?

The load parameter shown concerns the maximum value, obtained under laboratory conditions, specifically:

using a base made of high-permeability steel, acting as a ideal flux conductor
possessing a massiveness of minimum 10 mm to avoid saturation
characterized by even structure
with direct contact (without impurities)
for force acting at a right angle (pull-off, not shear)
at ambient temperature approx. 20 degrees Celsius

Magnet lifting force in use – key factors

Bear in mind that the application force may be lower depending on the following factors, starting with the most relevant:

Space between magnet and steel – every millimeter of separation (caused e.g. by veneer or dirt) significantly weakens the pulling force, often by half at just 0.5 mm.
Pull-off angle – remember that the magnet holds strongest perpendicularly. Under sliding down, the holding force drops drastically, often to levels of 20-30% of the nominal value.
Substrate thickness – for full efficiency, the steel must be sufficiently thick. Paper-thin metal limits the lifting capacity (the magnet "punches through" it).
Plate material – low-carbon steel gives the best results. Alloy steels lower magnetic properties and holding force.
Surface quality – the more even the plate, the larger the contact zone and higher the lifting capacity. Unevenness creates an air distance.
Thermal factor – hot environment reduces pulling force. Exceeding the limit temperature can permanently damage the magnet.

Holding force was checked on a smooth steel plate of 20 mm thickness, when a perpendicular force was applied, however under shearing force the lifting capacity is smaller. In addition, even a small distance between the magnet’s surface and the plate lowers the holding force.

Precautions when working with neodymium magnets

Flammability

Powder generated during grinding of magnets is self-igniting. Do not drill into magnets unless you are an expert.

Fragile material

Beware of splinters. Magnets can explode upon violent connection, launching shards into the air. We recommend safety glasses.

Avoid contact if allergic

It is widely known that nickel (standard magnet coating) is a potent allergen. For allergy sufferers, refrain from direct skin contact and opt for encased magnets.

Choking Hazard

These products are not intended for children. Accidental ingestion of multiple magnets may result in them attracting across intestines, which poses a severe health hazard and requires immediate surgery.

Respect the power

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

Bodily injuries

Large magnets can crush fingers instantly. Under no circumstances put your hand between two strong magnets.

Keep away from computers

Device Safety: Neodymium magnets can damage data carriers and sensitive devices (pacemakers, hearing aids, timepieces).

Implant safety

Life threat: Strong magnets can deactivate heart devices and defibrillators. Do not approach if you have medical devices.

Operating temperature

Do not overheat. NdFeB magnets are susceptible to heat. If you need resistance above 80°C, look for special high-temperature series (H, SH, UH).

GPS and phone interference

Navigation devices and smartphones are highly sensitive to magnetism. Close proximity with a powerful NdFeB magnet can ruin the sensors in your phone.

Danger! More info about hazards in the article: Safety of working with magnets.

MW 20x2 / N38 - cylindrical magnet

Physical properties - MW 20x2 / N38 - cylindrical magnet

Magnetic properties of material N38

Physical properties of sintered neodymium magnets Nd2Fe14B at 20°C

Technical analysis of the product - technical parameters

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

Table 2: Sliding hold (vertical surface) MW 20x2 / N38

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

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

Table 5: Working in heat (material behavior) - thermal limit MW 20x2 / N38

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

Table 7: Protective zones (implants) - warnings MW 20x2 / N38

Table 8: Collisions (kinetic energy) - warning MW 20x2 / N38

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

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

Table 11: Underwater work (magnet fishing) MW 20x2 / N38

1. Shear force

2. Steel saturation

3. Power loss vs temp

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

Elemental analysis

Environmental data

Pulling force

Magnetic Induction

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Advantages as well as disadvantages of rare earth magnets.

Pros

Cons

Pull force analysis

Maximum magnetic pulling force – what contributes to it?

Magnet lifting force in use – key factors

Precautions when working with neodymium magnets

Flammability

Fragile material

Avoid contact if allergic

Choking Hazard

Respect the power

Bodily injuries

Keep away from computers

Implant safety

Operating temperature

GPS and phone interference

Physical properties of sintered neodymium magnets Nd₂Fe₁₄B at 20°C

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

Table 2: Sliding hold (vertical surface)
MW 20x2 / N38

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

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

Table 5: Working in heat (material behavior) - thermal limit
MW 20x2 / N38

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

Table 7: Protective zones (implants) - warnings
MW 20x2 / N38

Table 8: Collisions (kinetic energy) - warning
MW 20x2 / N38

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

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

Table 11: Underwater work (magnet fishing)
MW 20x2 / N38