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MW 6x6 / 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 010094

GTIN: 5906301810933

5.00

Diameter Ø

6 mm [±0,1 mm]

Height

6 mm [±0,1 mm]

Weight

1.27 g

Magnetization Direction

↑ axial

Load capacity

1.69 kg / 16.61 N

Magnetic Induction

553.38 mT

Coating

[NiCuNi] Nickel

0.677 ZŁ with VAT / pcs + price for transport

0.550 ZŁ net + 23% VAT / pcs

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MW 6x6 / N38 - cylindrical magnet

Specification / characteristics MW 6x6 / N38 - cylindrical magnet

properties

properties	values
Cat. no.	010094
GTIN	5906301810933
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	6 mm [±0,1 mm]
Height	6 mm [±0,1 mm]
Weight	1.27 g
Magnetization Direction	↑ axial
Load capacity ~ ?	1.69 kg / 16.61 N
Magnetic Induction ~ ?	553.38 mT
Coating	[NiCuNi] Nickel
Manufacturing Tolerance	±0.1 mm

Magnetic properties of material N38

Specification / characteristics MW 6x6 / N38 - cylindrical magnet

properties	values	units
remenance Br [Min. - Max.] ?	12.2-12.6	kGs
remenance Br [Min. - Max.] ?	1220-1260	T
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 106	°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 modeling of the product - report

These information represent the result of a mathematical analysis. Results were calculated on models for the material NdFeB. Real-world performance may differ from theoretical values. Use these calculations as a reference point for designers.

Table 1: Static pull force (pull vs gap) - power drop
MW 6x6 / N38

Distance (mm)	Induction (Gauss) / mT	Pull Force (kg)	Risk Status
0 mm	5527 Gs 552.7 mT	1.69 kg / 1690.0 g 16.6 N	safe
1 mm	3738 Gs 373.8 mT	0.77 kg / 773.2 g 7.6 N	safe
2 mm	2366 Gs 236.6 mT	0.31 kg / 309.8 g 3.0 N	safe
5 mm	665 Gs 66.5 mT	0.02 kg / 24.5 g 0.2 N	safe
10 mm	155 Gs 15.5 mT	0.00 kg / 1.3 g 0.0 N	safe
15 mm	58 Gs 5.8 mT	0.00 kg / 0.2 g 0.0 N	safe
20 mm	28 Gs 2.8 mT	0.00 kg / 0.0 g 0.0 N	safe
30 mm	9 Gs 0.9 mT	0.00 kg / 0.0 g 0.0 N	safe
50 mm	2 Gs 0.2 mT	0.00 kg / 0.0 g 0.0 N	safe

Pulling power decreases drastically with every mm of gap. Keep in mind that even the smallest gap (e.g., dirt, paint, dust) significantly reduces the pull force. Magnets hold strongest at the point of direct contact; gap drastically cuts the force. Analyze how rapidly the pull force plummet, when the magnet does not touch directly to the steel surface. When designing the assembly, avoid redundant distances.

Table 2: Wall mounting (sliding) - vertical pull
MW 6x6 / N38

Surface type	Friction coefficient / % Mocy	Max load (kg)
Raw steel	µ = 0.3 30% Nominalnej Siły	0.51 kg / 507.0 g 5.0 N
Painted steel (standard)	µ = 0.2 20% Nominalnej Siły	0.34 kg / 338.0 g 3.3 N
Oily/slippery steel	µ = 0.1 10% Nominalnej Siły	0.17 kg / 169.0 g 1.7 N
Magnet with anti-slip rubber	µ = 0.5 50% Nominalnej Siły	0.85 kg / 845.0 g 8.3 N

When mounting a element on a vertical wall (e.g., a car body), it you can count on only about 1/5 of its nominal power. Gravitational force as well as a weak degree of grip influence the fact that holders slide down easier than they pull off. Planning a hanger? Remember that the shear force is noticeably lower than the maximum static pull force. On a smooth steel, the holder will slip down under a noticeably lighter cargo. Utilizing a rubberized coating can effectively improve the result.

Table 3: Material efficiency (substrate influence) - sheet metal selection
MW 6x6 / N38

Steel thickness (mm)	% power	Real pull force (kg)
0.5 mm	10%	0.17 kg / 169.0 g 1.7 N
1 mm	25%	0.42 kg / 422.5 g 4.1 N
2 mm	50%	0.85 kg / 845.0 g 8.3 N
5 mm	100%	1.69 kg / 1690.0 g 16.6 N
10 mm	100%	1.69 kg / 1690.0 g 16.6 N

A thin metal plate cannot conduct the entire magnetic field, which squanders power of the magnet. If you mount a strong magnet to a too thin substrate, the magnetism will penetrate right through and the attraction force will be weaker. To utilize 100% of this neodymium's potential, you need a suitably thick backing of metal. The material oversaturation causes that on sheet metal structures (e.g., appliance housings), the magnet works worse. We advise picking the steel dimension from these parameters.

Table 4: Thermal stability (material behavior) - power drop
MW 6x6 / N38

Ambient temp. (°C)	Power loss	Remaining pull	Status
20 °C	0.0%	1.69 kg / 1690.0 g 16.6 N	OK
40 °C	-2.2%	1.65 kg / 1652.8 g 16.2 N	OK
60 °C	-4.4%	1.62 kg / 1615.6 g 15.8 N	OK
80 °C	-6.6%	1.58 kg / 1578.5 g 15.5 N
100 °C	-28.8%	1.20 kg / 1203.3 g 11.8 N

Ordinary NdFeB products change their properties parameters above the temperature limit. Avoid high temperatures – high temperature can irreversibly demagnetize this product. With increasing heat, the neodymium's force momentarily decreases. Refrain from using this product in hot environments exceeding its operating temperature limit. Too high temperature will cause irreversible degradation of magnetism.

Table 5: Two magnets (repulsion) - forces in the system
MW 6x6 / N38

Gap (mm)	Attraction (kg) (N-S)	Repulsion (kg) (N-N)
0 mm	2.54 kg / 2535.0 g 24.9 N	N/A
2 mm	0.46 kg / 465.0 g 4.6 N	0.43 kg / 434.0 g 4.3 N
5 mm	0.03 kg / 30.0 g 0.3 N	0.03 kg / 28.0 g 0.3 N
10 mm	0.00 kg / 0.0 g 0.0 N	0.00 kg / 0.0 g 0.0 N
20 mm	0.00 kg / 0.0 g 0.0 N	0.00 kg / 0.0 g 0.0 N
50 mm	0.00 kg / 0.0 g 0.0 N	0.00 kg / 0.0 g 0.0 N

Two magnetic products attract each other from a significantly greater distance than a magnet and sheet setup. Such a system of two magnets produces a massive flux and a wider radius of performance. Want to build a powerful holder? Utilize two neodymiums instead of one magnet and a steel. Exercise caution that when bringing together two magnets, the collision energy is massive. The levitation is slightly lower than the attraction, but still large.

Table 6: Hazards (implants) - warnings
MW 6x6 / N38

Object / Device	Limit (Gauss) / mT	Safe distance
Pacemaker	5 Gs (0.5 mT)	4.0 cm
Hearing aid	10 Gs (1.0 mT)	3.0 cm
Mechanical watch	20 Gs (2.0 mT)	2.5 cm
Phone / Smartphone	40 Gs (4.0 mT)	2.0 cm
Car key	50 Gs (5.0 mT)	2.0 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 serious hazard to electronic devices as well as medical implants. These NdFeB products produce a field that destroys function of sensitive medical devices. Notice: the unseen radiation acts through matter and housings. Exceptional care must be exercised by people with hearing aids and insulin pumps. Also at risk are: mechanical watches, car keys, membranes, and displays. Do not bring the product near payment cards, HDD media, or sensitive navigation tools.

Table 7: Impact energy (cracking risk) - collision effects
MW 6x6 / N38

Start from (mm)	Speed (km/h)	Energy (J)
10 mm	36.81 km/h (10.22 m/s)	0.07 J
30 mm	63.72 km/h (17.70 m/s)	0.20 J
50 mm	82.26 km/h (22.85 m/s)	0.33 J
100 mm	116.34 km/h (32.32 m/s)	0.66 J

NdFeB products are prone to chipping – a strong collision with metal causes immediate chipping. Pay attention to connection velocity – a magnet released freely becomes dangerous. Striking energy can cause material chips or injury to fingers. Be sure to control the product during mounting so it doesn't hit with great force against the steel surface. A collision at high speed ends with a crack of the neodymium. Use safety goggles when handling with powerful specimens.

Table 8: Coating parameters (durability)
MW 6x6 / 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. The silver nickel coating also serves an aesthetic function but is not fully waterproof.

Table 9: Hydrostatics and buoyancy
MW 6x6 / N38

Environment	Effective steel pull	Effect
Air (land)	1.69 kg	Standard
Water (riverbed)	1.94 kg (+0.25 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!

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

MW 12x3 / N38 - cylindrical magnet

1.648 ZŁ brutto / pcs

Product available Ships in 2 days

MW 45x20 / N38 - cylindrical magnet

84.45 ZŁ brutto / pcs

Product available Ships in 2 days

UMC 25x6/4x8 / N38 - cylindrical magnetic holder

11.70 ZŁ brutto / pcs

Product available Ships in 2 days

MW 15x8 / N38 - cylindrical magnet

4.92 ZŁ brutto / pcs

The offered product is an extremely powerful cylinder magnet, composed of durable NdFeB material, which, with dimensions of Ø6x6 mm, guarantees maximum efficiency. The MW 6x6 / N38 component boasts high dimensional repeatability and industrial build quality, making it a perfect solution for the most demanding engineers and designers. As a magnetic rod with impressive force (approx. 1.69 kg), this product is in stock from our warehouse in Poland, ensuring lightning-fast order fulfillment. Moreover, its Ni-Cu-Ni coating secures it against corrosion in typical operating conditions, ensuring an aesthetic appearance and durability for years.

It finds application in DIY projects, advanced automation, and broadly understood industry, serving as a fastening or actuating element. Thanks to the high power of 16.61 N with a weight of only 1.27 g, this cylindrical magnet is indispensable in electronics and wherever low weight is crucial.

Since our magnets have a tolerance of ±0.1mm, the recommended way is to glue them into holes with a slightly larger diameter (e.g., 6.1 mm) using two-component epoxy glues. To ensure stability in industry, specialized industrial adhesives are used, which are safe for nickel and fill the gap, guaranteeing durability of the connection.

Grade N38 is the most popular standard for industrial neodymium magnets, offering an optimal price-to-power ratio and high resistance to demagnetization. If you need the strongest magnets in the same volume (Ø6x6), contact us regarding higher grades (e.g., N50, N52), however, N38 is the standard available off-the-shelf in our warehouse.

This model is characterized by dimensions Ø6x6 mm, which, at a weight of 1.27 g, makes it an element with impressive magnetic energy density. The key parameter here is the holding force amounting to approximately 1.69 kg (force ~16.61 N), which, with such compact dimensions, proves the high grade of the NdFeB material. The product has a [NiCuNi] coating, which secures it 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 6 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 diametrically if your project requires it.

Strengths and weaknesses of NdFeB magnets.

In addition to their magnetic efficiency, neodymium magnets provide the following advantages:

They retain magnetic properties for around 10 years – the loss is just ~1% (based on simulations),
Magnets perfectly resist against demagnetization caused by ambient magnetic noise,
A magnet with a metallic gold surface is more attractive,
The surface of neodymium magnets generates a concentrated magnetic field – this is a distinguishing feature,
Due to their durability and thermal resistance, neodymium magnets are capable of operate (depending on the shape) even at high temperatures reaching 230°C or more...
Thanks to flexibility in designing and the ability to adapt to individual projects,
Fundamental importance in high-tech industry – they are used in HDD drives, electric motors, diagnostic systems, also complex engineering applications.
Compactness – despite small sizes they generate large force, making them ideal for precision applications

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

They are fragile upon heavy impacts. To avoid cracks, it is worth protecting magnets in special housings. Such protection not only shields the magnet but also increases its resistance to damage
Neodymium magnets decrease their strength under the influence of heating. As soon as 80°C is exceeded, many of them start losing their force. 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
Due to limitations in producing nuts and complex forms in magnets, we recommend using a housing - magnetic holder.
Health risk resulting from small fragments of magnets pose a threat, if swallowed, which gains importance in the context of child health protection. Furthermore, small components of these products can complicate diagnosis medical in case of swallowing.
High unit price – neodymium magnets are more expensive than other types of magnets (e.g. ferrite), which hinders application in large quantities

Best holding force of the magnet in ideal parameters – what it depends on?

Breakaway force was determined for the most favorable conditions, including:

with the contact of a yoke made of low-carbon steel, guaranteeing full magnetic saturation
with a thickness no less than 10 mm
with a surface cleaned and smooth
under conditions of ideal adhesion (surface-to-surface)
for force acting at a right angle (in the magnet axis)
at ambient temperature approx. 20 degrees Celsius

Impact of factors on magnetic holding capacity in practice

Bear in mind that the working load will differ subject to elements below, in order of importance:

Gap between magnet and steel – every millimeter of distance (caused e.g. by varnish or dirt) drastically reduces 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 much less (often approx. 20-30% of nominal force).
Base massiveness – too thin steel causes magnetic saturation, causing part of the flux to be lost into the air.
Steel type – mild steel gives the best results. Higher carbon content lower magnetic permeability and lifting capacity.
Plate texture – ground elements guarantee perfect abutment, which increases force. Rough surfaces weaken the grip.
Thermal factor – high temperature reduces magnetic field. Too high temperature can permanently demagnetize the magnet.

* Lifting capacity was measured with the use of a smooth steel plate of suitable thickness (min. 20 mm), under perpendicular pulling force, however under shearing force the lifting capacity is smaller. Moreover, even a minimal clearance {between} the magnet and the plate reduces the lifting capacity.

Precautions when working with NdFeB magnets

Allergic reactions

Allergy Notice: The Ni-Cu-Ni coating contains nickel. If redness happens, immediately stop working with magnets and wear gloves.

Electronic devices

Data protection: Neodymium magnets can ruin data carriers and sensitive devices (heart implants, medical aids, timepieces).

Operating temperature

Standard neodymium magnets (grade N) lose magnetization when the temperature exceeds 80°C. This process is irreversible.

Phone sensors

Navigation devices and smartphones are extremely susceptible to magnetic fields. Direct contact with a strong magnet can ruin the internal compass in your phone.

Fire risk

Powder produced during machining of magnets is combustible. Do not drill into magnets without proper cooling and knowledge.

Life threat

For implant holders: Powerful magnets disrupt medical devices. Keep minimum 30 cm distance or request help to work with the magnets.

Shattering risk

Neodymium magnets are sintered ceramics, meaning they are prone to chipping. Collision of two magnets will cause them shattering into small pieces.

Safe operation

Exercise caution. Neodymium magnets attract from a distance and snap with huge force, often faster than you can react.

Finger safety

Risk of injury: The attraction force is so great that it can cause blood blisters, pinching, and broken bones. Use thick gloves.

Product not for children

Always store magnets out of reach of children. Risk of swallowing is high, and the effects of magnets clamping inside the body are fatal.

Warning!

Need more info? Check our post: Are neodymium magnets dangerous?

MW 6x6 / N38 - cylindrical magnet

MW 6x6 / N38 - cylindrical magnet

Magnetic properties of material N38

Physical properties of sintered neodymium magnets Nd2Fe14B at 20°C

Technical modeling of the product - report

See also products

MW 12x3 / N38 - cylindrical magnet

MW 45x20 / N38 - cylindrical magnet

UMC 25x6/4x8 / N38 - cylindrical magnetic holder

MW 15x8 / N38 - cylindrical magnet

Strengths and weaknesses of NdFeB magnets.

Best holding force of the magnet in ideal parameters – what it depends on?

Impact of factors on magnetic holding capacity in practice

Precautions when working with NdFeB magnets

Physical properties of sintered neodymium magnets Nd₂Fe₁₄B at 20°C