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MW 5x2 / 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: 1-6500
Rating: 5

cylindrical magnet

Catalog no 010085

GTIN/EAN: 5906301810841

5.00

Diameter Ø

5 mm [±0,1 mm]

Height

2 mm [±0,1 mm]

Weight

0.29 g

Magnetization Direction

↑ axial

Load capacity

0.70 kg / 6.83 N

Magnetic Induction

386.50 mT / 3865 Gs

Coating

[NiCuNi] Nickel

0.1845 ZŁ with VAT / pcs + price for transport

0.1500 ZŁ net + 23% VAT / pcs

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MW 5x2 / N38 - cylindrical magnet

Specification / characteristics MW 5x2 / N38 - cylindrical magnet

properties

properties	values
Cat. no.	010085
GTIN/EAN	5906301810841
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	5 mm [±0,1 mm]
Height	2 mm [±0,1 mm]
Weight	0.29 g
Magnetization Direction	↑ axial
Load capacity ~ ?	0.70 kg / 6.83 N
Magnetic Induction ~ ?	386.50 mT / 3865 Gs
Coating	[NiCuNi] Nickel
Manufacturing Tolerance	±0.1 mm

Magnetic properties of material N38

Specification / characteristics MW 5x2 / 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 simulation of the magnet - technical parameters

These data represent the direct effect of a engineering analysis. Values are based on models for the material Nd₂Fe₁₄B. Actual parameters might slightly differ from theoretical values. Use these calculations as a reference point when designing systems.

Table 1: Static pull force (pull vs gap) - power drop
MW 5x2 / N38

Distance (mm)	Induction (Gauss) / mT	Pull Force (kg)	Risk Status
0 mm	3860 Gs 386.0 mT	0.70 kg / 700.0 g 6.9 N	safe
1 mm	2460 Gs 246.0 mT	0.28 kg / 284.4 g 2.8 N	safe
2 mm	1384 Gs 138.4 mT	0.09 kg / 90.0 g 0.9 N	safe
3 mm	782 Gs 78.2 mT	0.03 kg / 28.8 g 0.3 N	safe
5 mm	293 Gs 29.3 mT	0.00 kg / 4.0 g 0.0 N	safe
10 mm	55 Gs 5.5 mT	0.00 kg / 0.1 g 0.0 N	safe
15 mm	18 Gs 1.8 mT	0.00 kg / 0.0 g 0.0 N	safe
20 mm	8 Gs 0.8 mT	0.00 kg / 0.0 g 0.0 N	safe
30 mm	3 Gs 0.3 mT	0.00 kg / 0.0 g 0.0 N	safe
50 mm	1 Gs 0.1 mT	0.00 kg / 0.0 g 0.0 N	safe

Pulling power drops sharply per each millimeter of gap. Remember that every additional insulation layer (e.g., contamination, varnish, veneer) strongly reduces the pull force. Magnetic products hold optimally in perfect adhesion; distance kills the force. See how rapidly the parameters plummet, when the magnet does not touch tightly to the steel surface. When calculating the assembly, avoid additional spacers.

Table 2: Slippage hold (wall)
MW 5x2 / N38

Distance (mm)	Friction coefficient	Pull Force (kg)
0 mm	Stal (~0.2)	0.14 kg / 140.0 g 1.4 N
1 mm	Stal (~0.2)	0.06 kg / 56.0 g 0.5 N
2 mm	Stal (~0.2)	0.02 kg / 18.0 g 0.2 N
3 mm	Stal (~0.2)	0.01 kg / 6.0 g 0.1 N
5 mm	Stal (~0.2)	0.00 kg / 0.0 g 0.0 N
10 mm	Stal (~0.2)	0.00 kg / 0.0 g 0.0 N
15 mm	Stal (~0.2)	0.00 kg / 0.0 g 0.0 N
20 mm	Stal (~0.2)	0.00 kg / 0.0 g 0.0 N
30 mm	Stal (~0.2)	0.00 kg / 0.0 g 0.0 N
50 mm	Stal (~0.2)	0.00 kg / 0.0 g 0.0 N

The table below calculates the approximate shear load sufficient to initiate the sliding of the magnet down along a vertical metal surface (assuming standard friction coefficient). This parameter depends on the air gap between the magnet and the surface.

Table 3: Vertical assembly (sliding) - vertical pull
MW 5x2 / N38

Surface type	Friction coefficient / % Mocy	Max load (kg)
Raw steel	µ = 0.3 30% Nominalnej Siły	0.21 kg / 210.0 g 2.1 N
Painted steel (standard)	µ = 0.2 20% Nominalnej Siły	0.14 kg / 140.0 g 1.4 N
Oily/slippery steel	µ = 0.1 10% Nominalnej Siły	0.07 kg / 70.0 g 0.7 N
Magnet with anti-slip rubber	µ = 0.5 50% Nominalnej Siły	0.35 kg / 350.0 g 3.4 N

When mounting a holder on a vertical plane (e.g., a car body), it will maintain only about 20%-30% of nominal attraction strength. Gravity and a low friction coefficient mean that products slip faster than they detach. Designing a wall mount? Remember that the shear force is noticeably lower than the perpendicular breakaway force. On a smooth steel, the element will slip down under a significantly smaller load. Using a rubber layer can effectively raise the stability.

Table 4: Steel thickness (saturation) - sheet metal selection
MW 5x2 / N38

Steel thickness (mm)	% power	Real pull force (kg)
0.5 mm	10%	0.07 kg / 70.0 g 0.7 N
1 mm	25%	0.18 kg / 175.0 g 1.7 N
2 mm	50%	0.35 kg / 350.0 g 3.4 N
5 mm	100%	0.70 kg / 700.0 g 6.9 N
10 mm	100%	0.70 kg / 700.0 g 6.9 N

A thin sheet is unable to absorb the full magnetic flux, which weakens actual performance of the holder. Should you mount a strong magnet to a too thin substrate, the flux will penetrate right through and the holding will be smaller. To squeeze 100% of this neodymium's power, you require a sufficiently solid backing of steel. The saturation phenomenon means that on sheet metal structures (e.g., thin profiles), the holder works worse. We suggest choosing the steel cross-section according to the table below.

Table 5: Thermal stability (material behavior) - resistance threshold
MW 5x2 / N38

Ambient temp. (°C)	Power loss	Remaining pull	Status
20 °C	0.0%	0.70 kg / 700.0 g 6.9 N	OK
40 °C	-2.2%	0.68 kg / 684.6 g 6.7 N	OK
60 °C	-4.4%	0.67 kg / 669.2 g 6.6 N
80 °C	-6.6%	0.65 kg / 653.8 g 6.4 N
100 °C	-28.8%	0.50 kg / 498.4 g 4.9 N

Standard neodymium magnets irreversibly lose parameters above the temperature limit. Watch out for overheating – heat can irreversibly damage this product. With increasing heat, the neodymium's power briefly lowers. Do not use this product close to ovens higher than its safe range. Too high temperature will cause destruction of magnetism.

*Important note: Thermal stability depends not only on the material grade, and the Permeance Coefficient Pc. Flat magnets (pancake types) are more susceptible to demagnetization under lower heat stress than long magnets. The danger warning in the table signals permanent field degradation for this particular item.

Table 6: Two magnets (repulsion) - field collision
MW 5x2 / N38

Gap (mm)	Attraction (kg) (N-S)	Repulsion (kg) (N-N)
0 mm	1.80 kg / 1804 g 17.7 N 5 236 Gs	N/A
1 mm	1.21 kg / 1215 g 11.9 N 6 336 Gs	1.09 kg / 1093 g 10.7 N ~0 Gs
2 mm	0.73 kg / 733 g 7.2 N 4 921 Gs	0.66 kg / 659 g 6.5 N ~0 Gs
3 mm	0.42 kg / 417 g 4.1 N 3 711 Gs	0.37 kg / 375 g 3.7 N ~0 Gs
5 mm	0.13 kg / 130 g 1.3 N 2 071 Gs	0.12 kg / 117 g 1.1 N ~0 Gs
10 mm	0.01 kg / 10 g 0.1 N 587 Gs	0.01 kg / 9 g 0.1 N ~0 Gs
20 mm	0.00 kg / 0 g 0.0 N 110 Gs	0.00 kg / 0 g 0.0 N ~0 Gs
50 mm	0.00 kg / 0 g 0.0 N 9 Gs	0.00 kg / 0 g 0.0 N ~0 Gs

Two magnetic products attract each other from a much further distance than a neodymium and metal combination. The connection of magnet-to-magnet generates a stronger field and a further horizon of operation. Want to build a strong closure? Apply two magnets instead of one magnet and a steel. Remember that when attracting two neodymiums, the pinch force is huge. The repulsion force is a bit weaker than the attraction, but still impressive.
*Flux density for N-N configuration reaches ~0 Gs at the geometric center of the gap (resulting from vector opposition).

Table 7: Safety (HSE) (electronics) - precautionary measures
MW 5x2 / N38

Object / Device	Limit (Gauss) / mT	Safe distance
Pacemaker	5 Gs (0.5 mT)	2.5 cm
Hearing aid	10 Gs (1.0 mT)	2.0 cm
Timepiece	20 Gs (2.0 mT)	1.5 cm
Phone / Smartphone	40 Gs (4.0 mT)	1.5 cm
Remote	50 Gs (5.0 mT)	1.5 cm
Payment card	400 Gs (40.0 mT)	0.5 cm
HDD hard drive	600 Gs (60.0 mT)	0.5 cm

Extremely neodym field poses a serious hazard to IT equipment and medical implants. These neodymiums generate a flux that prevents correct functioning of sensitive medical devices. Be aware: the unseen radiation passes through tissues and glass. Special caution must be taken by people with hearing aids and insulin pumps. Also at risk are: automatic timepieces, car keys, membranes, and displays. Avoid contact with magnetic cards, hard drives, or precise measuring instruments.

Table 8: Impact energy (kinetic energy) - collision effects
MW 5x2 / N38

Start from (mm)	Speed (km/h)	Energy (J)
10 mm	49.55 km/h (13.77 m/s)	0.03 J
30 mm	85.82 km/h (23.84 m/s)	0.08 J
50 mm	110.79 km/h (30.78 m/s)	0.14 J
100 mm	156.69 km/h (43.52 m/s)	0.27 J

Neodymium magnets are prone to chipping – a strong collision with metal causes immediate chipping. Watch the impact speed – a magnet released freely becomes dangerous. Impact energy can destroy the magnet or painful pinches to skin. Hold the magnet firmly during bringing near metal so it doesn't hit violently against the steel surface. A collision at high speed almost guarantees destruction of the magnet. Wear eye protection when playing with powerful specimens.

Table 9: Anti-corrosion coating durability
MW 5x2 / 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. Improper coating selection is the most common cause of magnet failure over time.

Table 10: Construction data (Flux)
MW 5x2 / N38

Parameter	Value	SI Unit / Description
Magnetic Flux	785 Mx	7.9 µWb
P_c Coefficient	0.50	Low (Flat)

Flux value emitted by the pole surface. Essential parameter in coil applications as well as sensors. The P_c coefficient determines the working geometry.

Table 11: Hydrostatics and buoyancy
MW 5x2 / N38

Environment	Effective steel pull	Effect
Air (land)	0.70 kg	Standard
Water (riverbed)	0.80 kg (+0.10 kg Buoyancy gain)	+14.5%

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

Water displaces steel, making heavy objects slightly lighter. However, remember the water resistance when pulling the rope quickly.

1. Vertical hold

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

2. Steel saturation

*Thin steel (e.g. computer case) severely limits the holding force.

3. Temperature resistance

*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) = 0.50

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

Chemical composition

iron (Fe)	64% – 68%
neodymium (Nd)	29% – 32%
boron (B)	1.1% – 1.2%
dysprosium (Dy)	0.5% – 2.0%
coating (Ni-Cu-Ni)	< 0.05%

Sustainability

recyclability (EoL)	100%
recycled raw materials	~10% (pre-cons)
carbon footprint	low / zredukowany
waste code (EWC)	16 02 16

Safety card (GPSR)

responsible entity

Dhit sp. z o.o.

ul. Kościuszki 6A, 05-850 Ożarów Mazowiecki

tel: +48 22 499 98 98 | e-mail: bok@dhit.pl

batch number/type

id: 010085-2025

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MPL 3x3x3 / N38 - lamellar magnet

0.1845 ZŁ brutto / pcs

This product is an incredibly powerful cylinder magnet, composed of advanced NdFeB material, which, with dimensions of Ø5x2 mm, guarantees maximum efficiency. The MW 5x2 / N38 model features high dimensional repeatability and professional build quality, making it a perfect solution for professional engineers and designers. As a magnetic rod with impressive force (approx. 0.70 kg), this product is in stock from our European logistics center, ensuring rapid order fulfillment. Moreover, its Ni-Cu-Ni coating shields it against corrosion in standard operating conditions, guaranteeing an aesthetic appearance and durability for years.

It finds application in DIY projects, advanced automation, and broadly understood industry, serving as a positioning or actuating element. Thanks to the high power of 6.83 N with a weight of only 0.29 g, this cylindrical magnet is indispensable in electronics and wherever low weight is crucial.

Due to the delicate structure of the ceramic sinter, we absolutely advise against force-fitting (so-called press-fit), as this risks immediate cracking of this professional component. To ensure stability in automation, specialized industrial adhesives are used, which do not react with the nickel coating and fill the gap, guaranteeing high repeatability 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 (Ø5x2), contact us regarding higher grades (e.g., N50, N52), however, N38 is the standard in continuous sale in our warehouse.

The presented product is a neodymium magnet with precisely defined parameters: diameter 5 mm and height 2 mm. The value of 6.83 N means that the magnet is capable of holding a weight many times exceeding its own mass of 0.29 g. The product has a [NiCuNi] coating, which protects the surface against oxidation, giving it an aesthetic, silvery shine.

This rod magnet is magnetized axially (along the height of 2 mm), which means that the N and S poles are located on the flat, circular surfaces. Such an arrangement is standard when connecting magnets in stacks (e.g., in filters) or when mounting in sockets at the bottom of a hole. On request, we can also produce versions magnetized diametrically if your project requires it.

Pros as well as cons of Nd₂Fe₁₄B magnets.

Pros

Besides their durability, neodymium magnets are valued for these benefits:

They virtually do not lose strength, because even after ten years the performance loss is only ~1% (according to literature),
They feature excellent resistance to magnetic field loss when exposed to external fields,
In other words, due to the glossy finish of nickel, the element gains a professional look,
Magnetic induction on the working part of the magnet turns out to be exceptional,
Through (adequate) combination of ingredients, they can achieve high thermal resistance, allowing for action at temperatures reaching 230°C and above...
In view of the potential of flexible molding and adaptation to specialized needs, magnetic components can be created in a broad palette of shapes and sizes, which makes them more universal,
Versatile presence in modern technologies – they are commonly used in HDD drives, electric motors, precision medical tools, and technologically advanced constructions.
Thanks to their power density, small magnets offer high operating force, in miniature format,

Weaknesses

Drawbacks and weaknesses of neodymium magnets: application proposals

At strong impacts they can crack, therefore we advise placing them in strong housings. A metal housing provides additional protection against damage, as well as increases the magnet's durability.
When exposed to high temperature, neodymium magnets experience a drop in strength. 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
Magnets exposed to a humid environment can rust. Therefore during using outdoors, we advise using water-impermeable magnets made of rubber, plastic or other material protecting against moisture
Limited ability of producing nuts in the magnet and complex forms - recommended is casing - mounting mechanism.
Possible danger resulting from small fragments of magnets pose a threat, in case of ingestion, which is particularly important in the context of child health protection. Additionally, tiny parts of these devices are able to complicate diagnosis medical when they are in the body.
Due to expensive raw materials, their price is relatively high,

Pull force analysis

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

The lifting capacity listed is a measurement result performed under standard conditions:

on a base made of structural steel, optimally conducting the magnetic flux
whose thickness reaches at least 10 mm
with an ideally smooth touching surface
with total lack of distance (no paint)
under perpendicular application of breakaway force (90-degree angle)
at ambient temperature approx. 20 degrees Celsius

Impact of factors on magnetic holding capacity in practice

Please note that the application force may be lower depending on the following factors, starting with the most relevant:

Clearance – the presence of foreign body (rust, tape, gap) acts as an insulator, which reduces capacity rapidly (even by 50% at 0.5 mm).
Direction of force – maximum parameter is available only during perpendicular pulling. The force required to slide of the magnet along the surface is typically many times lower (approx. 1/5 of the lifting capacity).
Substrate thickness – for full efficiency, the steel must be sufficiently thick. Paper-thin metal restricts the attraction force (the magnet "punches through" it).
Steel type – low-carbon steel gives the best results. Alloy admixtures lower magnetic permeability and lifting capacity.
Plate texture – ground elements guarantee perfect abutment, which improves force. Uneven metal reduce efficiency.
Temperature influence – high temperature reduces pulling force. Too high temperature can permanently demagnetize the magnet.

Lifting capacity was determined with the use of a steel plate with a smooth surface of suitable thickness (min. 20 mm), under perpendicular detachment force, however under parallel forces the lifting capacity is smaller. Moreover, even a slight gap between the magnet’s surface and the plate reduces the lifting capacity.

Warnings

GPS and phone interference

Be aware: neodymium magnets produce a field that disrupts precision electronics. Keep a separation from your phone, device, and navigation systems.

Keep away from children

Absolutely keep magnets out of reach of children. Risk of swallowing is significant, and the effects of magnets clamping inside the body are life-threatening.

Warning for allergy sufferers

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

Power loss in heat

Keep cool. Neodymium magnets are sensitive to temperature. If you require operation above 80°C, inquire about special high-temperature series (H, SH, UH).

Serious injuries

Large magnets can crush fingers in a fraction of a second. Do not put your hand betwixt two attracting surfaces.

Eye protection

Protect your eyes. Magnets can fracture upon violent connection, ejecting shards into the air. Eye protection is mandatory.

Data carriers

Avoid bringing magnets near a purse, laptop, or TV. The magnetic field can permanently damage these devices and wipe information from cards.

Combustion hazard

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

Medical interference

Life threat: Strong magnets can turn off heart devices and defibrillators. Stay away if you have electronic implants.

Handling guide

Before use, check safety instructions. Uncontrolled attraction can destroy the magnet or hurt your hand. Be predictive.

Safety First! More info about risks in the article: Safety of working with magnets.

MW 5x2 / N38 - cylindrical magnet

Hunting for a discount?

MW 5x2 / N38 - cylindrical magnet

Magnetic properties of material N38

Physical properties of sintered neodymium magnets Nd2Fe14B at 20°C

Technical simulation of the magnet - technical parameters

1. Vertical hold

2. Steel saturation

3. Temperature resistance

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

Chemical composition

Sustainability

Force (pull)

Magnetic Induction

Other offers

SM 32x250 [2xM8] / N42 - magnetic separator

MW 12x3 / N38 - cylindrical magnet

MPL 40x10x5 / N38 - lamellar magnet

MPL 3x3x3 / N38 - lamellar magnet

Pros as well as cons of Nd2Fe14B magnets.

Pros

Weaknesses

Pull force analysis

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

Impact of factors on magnetic holding capacity in practice

GPS and phone interference

Keep away from children

Warning for allergy sufferers

Power loss in heat

Serious injuries

Eye protection

Data carriers

Combustion hazard

Medical interference

Handling guide

Physical properties of sintered neodymium magnets Nd₂Fe₁₄B at 20°C

Pros as well as cons of Nd₂Fe₁₄B magnets.