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MW 38x3.5 / N38 - cylindrical magnet

Name: Dhit sp. z o.o.
Address: Kościuszki 6A, Ożarów Mazowiecki, mazowieckie, 05-850, PL
Telephone: +48 22 499 98 98
Price range: 1-6500 PLN
Rating: 5

cylindrical magnet

Catalog no 010062

GTIN/EAN: 5906301810612

5.00

Diameter Ø

38 mm [±0,1 mm]

Height

3.5 mm [±0,1 mm]

Weight

29.77 g

Magnetization Direction

↑ axial

Load capacity

5.09 kg / 49.91 N

Magnetic Induction

112.31 mT / 1123 Gs

Coating

[NiCuNi] Nickel

view technical specifications »

15.83 ZŁ with VAT / pcs + price for transport

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Engineering report for this magnet

Full PDF analysis: pull and shear force, effect of distance, temperature and plate thickness, safety distances and the demagnetization curve.

PDF report Calculator

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Lifting power as well as appearance of neodymium magnets can be calculated using our modular calculator.

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Physical properties - MW 38x3.5 / N38 - cylindrical magnet

Specification / characteristics - MW 38x3.5 / N38 - cylindrical magnet

properties

properties	values
Cat. no.	010062
GTIN/EAN	5906301810612
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	38 mm [±0,1 mm]
Height	3.5 mm [±0,1 mm]
Weight	29.77 g
Magnetization Direction	↑ axial
Load capacity ~ ?	5.09 kg / 49.91 N
Magnetic Induction ~ ?	112.31 mT / 1123 Gs
Coating	[NiCuNi] Nickel
Manufacturing Tolerance	±0.1 mm

Magnetic properties of material N38

Specification / characteristics MW 38x3.5 / 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 modeling of the magnet - report

Presented data are the result of a mathematical calculation. Results are based on models for the material Nd₂Fe₁₄B. Real-world performance may differ. Please consider these data as a preliminary roadmap for designers.

Table 1: Static force (pull vs gap) - characteristics
MW 38x3.5 / N38

Distance (mm)	Induction (Gauss) / mT	Pull Force (kg/lbs/g/N)	Risk Status
0 mm	1123 Gs 112.3 mT	5.09 kg / 11.22 LBS 5090.0 g / 49.9 N	strong
1 mm	1103 Gs 110.3 mT	4.91 kg / 10.82 LBS 4910.1 g / 48.2 N	strong
2 mm	1075 Gs 107.5 mT	4.66 kg / 10.28 LBS 4663.0 g / 45.7 N	strong
3 mm	1040 Gs 104.0 mT	4.36 kg / 9.62 LBS 4364.2 g / 42.8 N	strong
5 mm	954 Gs 95.4 mT	3.67 kg / 8.10 LBS 3673.1 g / 36.0 N	strong
10 mm	703 Gs 70.3 mT	2.00 kg / 4.40 LBS 1997.1 g / 19.6 N	safe
15 mm	483 Gs 48.3 mT	0.94 kg / 2.08 LBS 943.2 g / 9.3 N	safe
20 mm	326 Gs 32.6 mT	0.43 kg / 0.95 LBS 429.7 g / 4.2 N	safe
30 mm	155 Gs 15.5 mT	0.10 kg / 0.21 LBS 97.1 g / 1.0 N	safe
50 mm	47 Gs 4.7 mT	0.01 kg / 0.02 LBS 8.9 g / 0.1 N	safe

Grip strength drops significantly with every mm of gap. Note that even a microscopic distance (e.g., dirt, varnish, dust) significantly reduces the pull force. Magnetic products hold optimally at the point of direct contact; distance kills the power. Analyze how flashily the pull force drop, when the magnet does not touch flatly to the metal substrate. When designing the assembly, eliminate unnecessary gaps.

Table 2: Sliding hold (vertical surface)
MW 38x3.5 / N38

Distance (mm)	Friction coefficient	Pull Force (kg/lbs/g/N)
0 mm	Stal (~0.2)	1.02 kg / 2.24 LBS 1018.0 g / 10.0 N
1 mm	Stal (~0.2)	0.98 kg / 2.16 LBS 982.0 g / 9.6 N
2 mm	Stal (~0.2)	0.93 kg / 2.05 LBS 932.0 g / 9.1 N
3 mm	Stal (~0.2)	0.87 kg / 1.92 LBS 872.0 g / 8.6 N
5 mm	Stal (~0.2)	0.73 kg / 1.62 LBS 734.0 g / 7.2 N
10 mm	Stal (~0.2)	0.40 kg / 0.88 LBS 400.0 g / 3.9 N
15 mm	Stal (~0.2)	0.19 kg / 0.41 LBS 188.0 g / 1.8 N
20 mm	Stal (~0.2)	0.09 kg / 0.19 LBS 86.0 g / 0.8 N
30 mm	Stal (~0.2)	0.02 kg / 0.04 LBS 20.0 g / 0.2 N
50 mm	Stal (~0.2)	0.00 kg / 0.00 LBS 2.0 g / 0.0 N

The table below calculates the theoretical force required to start the sliding of the magnet vertically against a upright steel plate (considering typical friction). The holding force is relative to the separation distance between the magnet and the metal.

Table 3: Wall mounting (shearing) - vertical pull
MW 38x3.5 / N38

Surface type	Friction coefficient / % Mocy	Max load (kg/lbs/g/N)
Raw steel	µ = 0.3 30% Nominalnej Siły	1.53 kg / 3.37 LBS 1527.0 g / 15.0 N
Painted steel (standard)	µ = 0.2 20% Nominalnej Siły	1.02 kg / 2.24 LBS 1018.0 g / 10.0 N
Oily/slippery steel	µ = 0.1 10% Nominalnej Siły	0.51 kg / 1.12 LBS 509.0 g / 5.0 N
Magnet with anti-slip rubber	µ = 0.5 50% Nominalnej Siły	2.55 kg / 5.61 LBS 2545.0 g / 25.0 N

When hanging a magnet on a upright wall (e.g., a board), it will only hold barely about 20%-30% of nominal attraction strength. Gravitational force as well as a weak degree of grip influence the fact that holders move down easier than they detach. Designing a hanger? Note that the sliding force is significantly lower than the maximum static pull force. On a slippery surface, the magnet will slide down under a significantly smaller weight. Application of an anti-slip layer can effectively raise the stability.

Table 4: Material efficiency (saturation) - power losses
MW 38x3.5 / N38

Steel thickness (mm)	% power	Real pull force (kg/lbs/g/N)
0.5 mm	10%	0.51 kg / 1.12 LBS 509.0 g / 5.0 N
1 mm	25%	1.27 kg / 2.81 LBS 1272.5 g / 12.5 N
2 mm	50%	2.55 kg / 5.61 LBS 2545.0 g / 25.0 N
3 mm	75%	3.82 kg / 8.42 LBS 3817.5 g / 37.4 N
5 mm	100%	5.09 kg / 11.22 LBS 5090.0 g / 49.9 N
10 mm	100%	5.09 kg / 11.22 LBS 5090.0 g / 49.9 N
11 mm	100%	5.09 kg / 11.22 LBS 5090.0 g / 49.9 N
12 mm	100%	5.09 kg / 11.22 LBS 5090.0 g / 49.9 N

A thin sheet cannot focus the entire magnetic field, which wastes potential of the magnet. Should you attach a powerful product to a thin surface, the flux will pass right through and the attraction force will be weaker. To utilize full efficiency of this magnet's power, you need a suitably thick backing of metal. The saturation phenomenon causes that on sheet metal structures (e.g., car bodies), the holder works worse. We advise picking the steel dimension based on the following data.

Table 5: Thermal resistance (stability) - thermal limit
MW 38x3.5 / N38

Ambient temp. (°C)	Power loss	Remaining pull (kg/lbs/g/N)	Status
20 °C	0.0%	5.09 kg / 11.22 LBS 5090.0 g / 49.9 N	OK
40 °C	-2.2%	4.98 kg / 10.97 LBS 4978.0 g / 48.8 N	OK
60 °C	-4.4%	4.87 kg / 10.73 LBS 4866.0 g / 47.7 N
80 °C	-6.6%	4.75 kg / 10.48 LBS 4754.1 g / 46.6 N
100 °C	-28.8%	3.62 kg / 7.99 LBS 3624.1 g / 35.6 N

Standard neodymium magnets change their properties strength past the thermal threshold. Avoid high temperatures – high temperature can permanently destroy this magnet. With every degree above norm, the magnet's force temporarily lowers. Refrain from using this magnet near heat sources exceeding its safe range. Exceeding the critical threshold will cause destruction of magnetism.

*Technical advisory: Heat tolerance depends not only on the material grade, and the Permeance Coefficient Pc. Flat magnets (low Pc) risk losing magnetic properties at lower temperatures compared to rod magnets. Red status in the table points to a risk of irreversible loss for this particular item.

Table 6: Two magnets (attraction) - forces in the system
MW 38x3.5 / N38

Gap (mm)	Attraction (kg/lbs) (N-S)	Sliding Force (kg/lbs/g/N)	Repulsion (kg/lbs) (N-N)
0 mm	8.82 kg / 19.44 LBS 2 143 Gs	1.32 kg / 2.92 LBS 1323 g / 13.0 N	N/A
1 mm	8.68 kg / 19.13 LBS 2 228 Gs	1.30 kg / 2.87 LBS 1302 g / 12.8 N	7.81 kg / 17.22 LBS ~0 Gs
2 mm	8.51 kg / 18.75 LBS 2 206 Gs	1.28 kg / 2.81 LBS 1276 g / 12.5 N	7.66 kg / 16.88 LBS ~0 Gs
3 mm	8.31 kg / 18.31 LBS 2 180 Gs	1.25 kg / 2.75 LBS 1246 g / 12.2 N	7.47 kg / 16.48 LBS ~0 Gs
5 mm	7.83 kg / 17.26 LBS 2 116 Gs	1.17 kg / 2.59 LBS 1174 g / 11.5 N	7.05 kg / 15.53 LBS ~0 Gs
10 mm	6.36 kg / 14.03 LBS 1 908 Gs	0.95 kg / 2.10 LBS 955 g / 9.4 N	5.73 kg / 12.63 LBS ~0 Gs
20 mm	3.46 kg / 7.63 LBS 1 407 Gs	0.52 kg / 1.14 LBS 519 g / 5.1 N	3.11 kg / 6.87 LBS ~0 Gs
50 mm	0.35 kg / 0.76 LBS 445 Gs	0.05 kg / 0.11 LBS 52 g / 0.5 N	0.31 kg / 0.69 LBS ~0 Gs
60 mm	0.17 kg / 0.37 LBS 310 Gs	0.03 kg / 0.06 LBS 25 g / 0.2 N	0.15 kg / 0.33 LBS ~0 Gs
70 mm	0.09 kg / 0.19 LBS 222 Gs	0.01 kg / 0.03 LBS 13 g / 0.1 N	0.08 kg / 0.17 LBS ~0 Gs
80 mm	0.05 kg / 0.10 LBS 163 Gs	0.01 kg / 0.02 LBS 7 g / 0.1 N	0.04 kg / 0.09 LBS ~0 Gs
90 mm	0.03 kg / 0.06 LBS 122 Gs	0.00 kg / 0.01 LBS 4 g / 0.0 N	0.02 kg / 0.05 LBS ~0 Gs
100 mm	0.02 kg / 0.03 LBS 94 Gs	0.00 kg / 0.01 LBS 2 g / 0.0 N	0.01 kg / 0.03 LBS ~0 Gs

Two magnets attract each other from a wider radius than a neodymium and metal combination. The connection of two magnets generates a stronger field and a wider radius of operation. Planning to create a strong closure? Use a pair of magnets instead of a neodymium and a striker plate. Exercise caution that when connecting a pair of magnets, the collision energy is huge. The levitation is a bit weaker than the attraction, but still impressive.
*Flux density in repulsion mode is approximately ~0 Gs in the exact middle of the gap (resulting from vector opposition).
Important: Estimates refer to shear force of two matching neodymium magnets (friction ~0.15 for Ni-Ni layer).

Table 7: Safety (HSE) (electronics) - warnings
MW 38x3.5 / N38

Object / Device	Limit (Gauss) / mT	Safe distance
Pacemaker	5 Gs (0.5 mT)	11.5 cm
Hearing aid	10 Gs (1.0 mT)	9.0 cm
Mechanical watch	20 Gs (2.0 mT)	7.0 cm
Phone / Smartphone	40 Gs (4.0 mT)	5.5 cm
Car key	50 Gs (5.0 mT)	5.0 cm
Payment card	400 Gs (40.0 mT)	2.0 cm
HDD hard drive	600 Gs (60.0 mT)	1.5 cm

A strong magnetic field is a large risk to electronics and medical implants. These neodymiums generate a flux that prevents correct functioning of digital equipment. Be aware: the invisible magnetic field passes through tissues and glass. Increased vigilance must be taken by people with cochlear implants and drug dispensers. The risk also applies to: mechanical watches, car keys, membranes, and screens. Do not place the magnet near cards, hard drives, or sensitive navigation tools.

Table 8: Impact energy (cracking risk) - collision effects
MW 38x3.5 / N38

Start from (mm)	Speed (km/h)	Energy (J)
10 mm	16.10 km/h (4.47 m/s)	0.30 J
30 mm	23.11 km/h (6.42 m/s)	0.61 J
50 mm	29.52 km/h (8.20 m/s)	1.00 J
100 mm	41.70 km/h (11.58 m/s)	2.00 J

Neodymium magnets are very brittle – a violent impact against metal risks their cracking. Control the attraction moment – a magnet released freely speeds with massive force. Impact energy can cause material chips or painful pinches to fingers. Be sure to control the product during bringing near metal so it doesn't hit with great force against the steel surface. A contact at a velocity of dozens of km/h ends with a crack of the neodymium. Use safety goggles when working with large magnets.

Table 9: Coating parameters (durability)
MW 38x3.5 / 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. Moisture resistance is crucial for installations in bathrooms or outdoors.

Table 10: Electrical data (P_c)
MW 38x3.5 / N38

Parameter	Value	SI Unit / Description
Magnetic Flux	17 022 Mx	170.2 µWb
P_c Coefficient	0.14	Low (Flat)

Total magnetic flux passing through the pole surface. Key data for generator designers and motors. The P_c coefficient defines the magnet's operating point.

Table 11: Underwater work (magnet fishing)
MW 38x3.5 / N38

Environment	Effective steel pull	Effect
Air (land)	5.09 kg	Standard
Water (riverbed)	5.83 kg (+0.74 kg buoyancy gain)	+14.5%

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

In water, the magnet feels stronger thanks to Archimedes' principle. However, remember the water resistance when pulling the rope quickly.

1. Vertical hold

*Note: On a vertical surface, the magnet holds merely a fraction of its nominal pull.

2. Efficiency vs thickness

*Thin steel (e.g. 0.5mm PC case) drastically limits 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) = 0.14

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

Material specification

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: 010062-2026

Measurement Calculator

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This product is an exceptionally strong rod magnet, composed of modern NdFeB material, which, at dimensions of Ø38x3.5 mm, guarantees maximum efficiency. The MW 38x3.5 / N38 model boasts an accuracy of ±0.1mm and industrial build quality, making it a perfect solution for professional engineers and designers. As a cylindrical magnet with impressive force (approx. 5.09 kg), this product is in stock from our warehouse in Poland, ensuring lightning-fast order fulfillment. Moreover, its triple-layer Ni-Cu-Ni coating shields it against corrosion in typical operating conditions, guaranteeing an aesthetic appearance and durability for years.

This model is perfect for building electric motors, advanced Hall effect sensors, and efficient magnetic separators, where maximum induction on a small surface counts. Thanks to the high power of 49.91 N with a weight of only 29.77 g, this rod is indispensable in electronics 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., 38.1 mm) using two-component epoxy glues. To ensure long-term durability in industry, 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 industrial neodymium magnets, offering a great economic balance and operational stability. If you need the strongest magnets in the same volume (Ø38x3.5), contact us regarding higher grades (e.g., N50, N52), however, N38 is the standard in continuous sale in our store.

This model is characterized by dimensions Ø38x3.5 mm, which, at a weight of 29.77 g, makes it an element with high magnetic energy density. The key parameter here is the holding force amounting to approximately 5.09 kg (force ~49.91 N), which, with such compact dimensions, proves the high power of the NdFeB material. The product has a [NiCuNi] coating, which secures it against oxidation, giving it an aesthetic, silvery shine.

This rod magnet is magnetized axially (along the height of 3.5 mm), which means that the N and S poles are located on the flat, circular surfaces. Such an arrangement is most desirable when connecting magnets in stacks (e.g., in filters) or when mounting in sockets at the bottom of a hole. On request, we can also produce versions magnetized diametrically if your project requires it.

Advantages as well as disadvantages of Nd₂Fe₁₄B magnets.

Pros

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

Their strength is maintained, and after around ten years it drops only by ~1% (according to research),
Magnets perfectly protect themselves against demagnetization caused by ambient magnetic noise,
Thanks to the reflective finish, the layer of nickel, gold, or silver-plated gives an modern appearance,
They feature high magnetic induction at the operating surface, which affects their effectiveness,
Neodymium magnets are characterized by very high magnetic induction on the magnet surface and can function (depending on the shape) even at a temperature of 230°C or more...
Thanks to freedom in forming and the capacity to customize to client solutions,
Fundamental importance in future technologies – they are utilized in data components, electromotive mechanisms, precision medical tools, as well as industrial machines.
Thanks to concentrated force, small magnets offer high operating force, with minimal size,

Disadvantages

What to avoid - cons of neodymium magnets: weaknesses and usage proposals

Susceptibility to cracking is one of their disadvantages. Upon intense impact they can fracture. We recommend keeping them in a strong case, which not only protects them against impacts but also increases their durability
We warn that neodymium magnets can lose their power at high temperatures. To prevent this, we recommend our specialized [AH] magnets, which work effectively even at 230°C.
Due to the susceptibility of magnets to corrosion in a humid environment, we recommend using waterproof magnets made of rubber, plastic or other material resistant to moisture, when using outdoors
Limited possibility of creating nuts in the magnet and complex forms - preferred is cover - magnet mounting.
Possible danger resulting from small fragments of magnets are risky, when accidentally swallowed, which is particularly important in the aspect of protecting the youngest. Furthermore, small elements of these products can disrupt the diagnostic process medical when they are in the body.
High unit price – neodymium magnets cost more than other types of magnets (e.g. ferrite), which increases costs of application in large quantities

Pull force analysis

Detachment force of the magnet in optimal conditions – what affects it?

Magnet power was determined for ideal contact conditions, assuming:

with the contact of a sheet made of special test steel, ensuring full magnetic saturation
whose transverse dimension equals approx. 10 mm
with a plane free of scratches
without any air gap between the magnet and steel
for force applied at a right angle (pull-off, not shear)
in stable room temperature

Lifting capacity in real conditions – factors

Effective lifting capacity is affected by working environment parameters, including (from most important):

Gap between surfaces – even a fraction of a millimeter of distance (caused e.g. by veneer or unevenness) diminishes the pulling force, often by half at just 0.5 mm.
Loading method – catalog parameter refers to detachment vertically. When applying parallel force, the magnet exhibits significantly lower power (often approx. 20-30% of nominal force).
Metal thickness – thin material does not allow full use of the magnet. Magnetic flux passes through the material instead of converting into lifting capacity.
Metal type – different alloys attracts identically. High carbon content worsen the interaction with the magnet.
Surface finish – ideal contact is obtained only on smooth steel. Any scratches and bumps reduce the real contact area, reducing force.
Heat – neodymium magnets have a sensitivity to temperature. At higher temperatures they lose power, and in frost gain strength (up to a certain limit).

Holding force was measured on a smooth steel plate of 20 mm thickness, when a perpendicular force was applied, however under attempts to slide the magnet the holding force is lower. Moreover, even a small distance between the magnet and the plate reduces the load capacity.

Safety rules for work with NdFeB magnets

Finger safety

Mind your fingers. Two powerful magnets will snap together immediately with a force of massive weight, crushing anything in their path. Be careful!

Electronic devices

Very strong magnetic fields can corrupt files on payment cards, hard drives, and other magnetic media. Maintain a gap of at least 10 cm.

Health Danger

For implant holders: Powerful magnets affect medical devices. Maintain at least 30 cm distance or request help to work with the magnets.

Caution required

Use magnets with awareness. Their immense force can surprise even professionals. Be vigilant and respect their power.

Do not give to children

These products are not suitable for play. Eating multiple magnets can lead to them attracting across intestines, which constitutes a direct threat to life and necessitates urgent medical intervention.

Shattering risk

NdFeB magnets are sintered ceramics, which means they are prone to chipping. Collision of two magnets leads to them shattering into small pieces.

Flammability

Powder produced during cutting of magnets is flammable. Avoid drilling into magnets without proper cooling and knowledge.

Heat sensitivity

Regular neodymium magnets (N-type) undergo demagnetization when the temperature exceeds 80°C. Damage is permanent.

Metal Allergy

Allergy Notice: The nickel-copper-nickel coating contains nickel. If an allergic reaction happens, immediately stop working with magnets and use protective gear.

Precision electronics

Navigation devices and mobile phones are extremely sensitive to magnetism. Direct contact with a powerful NdFeB magnet can permanently damage the sensors in your phone.

Danger! More info about risks in the article: Magnet Safety Guide.

MW 38x3.5 / N38 - cylindrical magnet

Physical properties - MW 38x3.5 / N38 - cylindrical magnet

Magnetic properties of material N38

Physical properties of sintered neodymium magnets Nd2Fe14B at 20°C

Engineering modeling of the magnet - report

Table 1: Static force (pull vs gap) - characteristics MW 38x3.5 / N38

Table 2: Sliding hold (vertical surface) MW 38x3.5 / N38

Table 3: Wall mounting (shearing) - vertical pull MW 38x3.5 / N38

Table 4: Material efficiency (saturation) - power losses MW 38x3.5 / N38

Table 5: Thermal resistance (stability) - thermal limit MW 38x3.5 / N38

Table 6: Two magnets (attraction) - forces in the system MW 38x3.5 / N38

Table 7: Safety (HSE) (electronics) - warnings MW 38x3.5 / N38

Table 8: Impact energy (cracking risk) - collision effects MW 38x3.5 / N38

Table 9: Coating parameters (durability) MW 38x3.5 / N38

Table 10: Electrical data (Pc) MW 38x3.5 / N38

Table 11: Underwater work (magnet fishing) MW 38x3.5 / N38

1. Vertical hold

2. Efficiency vs thickness

3. Power loss vs temp

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

Material specification

Environmental data

Magnet pull force

Magnetic Field

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MPL 42x20x5 / N38 - lamellar magnet

Advantages as well as disadvantages of Nd2Fe14B magnets.

Pros

Disadvantages

Pull force analysis

Detachment force of the magnet in optimal conditions – what affects it?

Lifting capacity in real conditions – factors

Safety rules for work with NdFeB magnets

Finger safety

Electronic devices

Health Danger

Caution required

Do not give to children

Shattering risk

Flammability

Heat sensitivity

Metal Allergy

Precision electronics

Physical properties of sintered neodymium magnets Nd₂Fe₁₄B at 20°C

Table 1: Static force (pull vs gap) - characteristics
MW 38x3.5 / N38

Table 2: Sliding hold (vertical surface)
MW 38x3.5 / N38

Table 3: Wall mounting (shearing) - vertical pull
MW 38x3.5 / N38

Table 4: Material efficiency (saturation) - power losses
MW 38x3.5 / N38

Table 5: Thermal resistance (stability) - thermal limit
MW 38x3.5 / N38

Table 6: Two magnets (attraction) - forces in the system
MW 38x3.5 / N38

Table 7: Safety (HSE) (electronics) - warnings
MW 38x3.5 / N38

Table 8: Impact energy (cracking risk) - collision effects
MW 38x3.5 / N38

Table 9: Coating parameters (durability)
MW 38x3.5 / N38

Table 10: Electrical data (P_c)
MW 38x3.5 / N38

Table 11: Underwater work (magnet fishing)
MW 38x3.5 / N38

Advantages as well as disadvantages of Nd₂Fe₁₄B magnets.