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MW 12x2 / 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 010017

GTIN: 5906301810162

5.00

Diameter Ø

12 mm [±0,1 mm]

Height

2 mm [±0,1 mm]

Weight

1.7 g

Magnetization Direction

↑ axial

Load capacity

1.19 kg / 11.68 N

Magnetic Induction

195.97 mT

Coating

[NiCuNi] Nickel

1.132 ZŁ with VAT / pcs + price for transport

0.920 ZŁ net + 23% VAT / pcs

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MW 12x2 / N38 - cylindrical magnet

Specification / characteristics MW 12x2 / N38 - cylindrical magnet

properties

properties	values
Cat. no.	010017
GTIN	5906301810162
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	12 mm [±0,1 mm]
Height	2 mm [±0,1 mm]
Weight	1.7 g
Magnetization Direction	↑ axial
Load capacity ~ ?	1.19 kg / 11.68 N
Magnetic Induction ~ ?	195.97 mT
Coating	[NiCuNi] Nickel
Manufacturing Tolerance	±0.1 mm

Magnetic properties of material N38

Specification / characteristics MW 12x2 / 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

Engineering modeling of the product - data

Presented information constitute the direct effect of a engineering analysis. Values are based on models for the material NdFeB. Real-world parameters may differ from theoretical values. Please consider these calculations as a reference point when designing systems.

Table 1: Static pull force (pull vs distance) - power drop
MW 12x2 / N38

Distance (mm)	Induction (Gauss) / mT	Pull Force (kg)	Risk Status
0 mm	1959 Gs 195.9 mT	1.19 kg / 1190.0 g 11.7 N	low risk
1 mm	1753 Gs 175.3 mT	0.95 kg / 953.3 g 9.4 N	low risk
2 mm	1479 Gs 147.9 mT	0.68 kg / 677.8 g 6.6 N	low risk
5 mm	738 Gs 73.8 mT	0.17 kg / 169.0 g 1.7 N	low risk
10 mm	229 Gs 22.9 mT	0.02 kg / 16.3 g 0.2 N	low risk
15 mm	90 Gs 9.0 mT	0.00 kg / 2.5 g 0.0 N	low risk
20 mm	43 Gs 4.3 mT	0.00 kg / 0.6 g 0.0 N	low risk
30 mm	14 Gs 1.4 mT	0.00 kg / 0.1 g 0.0 N	low risk
50 mm	3 Gs 0.3 mT	0.00 kg / 0.0 g 0.0 N	low risk

Pulling power drops sharply with every mm of spacing. Keep in mind that even a very thin break (e.g., contamination, varnish, veneer) noticeably weakens the grip. Magnetic products operate optimally at the point of direct contact; distance weakens the force. Observe how quickly the parameters fall, when the product does not touch directly to the steel surface. When calculating the mounting, discard additional spacers.

Table 2: Wall mounting (sliding) - vertical pull
MW 12x2 / N38

Surface type	Friction coefficient / % Mocy	Max load (kg)
Raw steel	µ = 0.3 30% Nominalnej Siły	0.36 kg / 357.0 g 3.5 N
Painted steel (standard)	µ = 0.2 20% Nominalnej Siły	0.24 kg / 238.0 g 2.3 N
Oily/slippery steel	µ = 0.1 10% Nominalnej Siły	0.12 kg / 119.0 g 1.2 N
Magnet with anti-slip rubber	µ = 0.5 50% Nominalnej Siły	0.60 kg / 595.0 g 5.8 N

When placing a element on a upright surface (e.g., a car body), it will only hold only about 1/5 of nominal attraction strength. Gravitational force as well as a weak degree of grip influence the fact that magnets slip faster than they pop off the substrate. Want to create a hanger? Note that the shear force is much weaker than the perpendicular breakaway force. On a painted metal, the holder will give way down under a significantly smaller cargo. Application of an anti-slip pad can significantly improve the result.

Table 3: Steel thickness (substrate influence) - sheet metal selection
MW 12x2 / N38

Steel thickness (mm)	% power	Real pull force (kg)
0.5 mm	10%	0.12 kg / 119.0 g 1.2 N
1 mm	25%	0.30 kg / 297.5 g 2.9 N
2 mm	50%	0.60 kg / 595.0 g 5.8 N
5 mm	100%	1.19 kg / 1190.0 g 11.7 N
10 mm	100%	1.19 kg / 1190.0 g 11.7 N

A too thin steel is unable to absorb the entire magnetic field, which weakens actual performance of the holder. If you attach a powerful product to a weak sheet, the field will penetrate right through and the pull force will drop sharply. To achieve 100% of this magnet's potential, you need a suitably thick element of metal. The saturation effect means that on thin elements (e.g., appliance housings), the holder shows lower pull force. We advise picking the steel cross-section according to the table below.

Table 4: Working in heat (material behavior) - thermal limit
MW 12x2 / N38

Ambient temp. (°C)	Power loss	Remaining pull	Status
20 °C	0.0%	1.19 kg / 1190.0 g 11.7 N	OK
40 °C	-2.2%	1.16 kg / 1163.8 g 11.4 N	OK
60 °C	-4.4%	1.14 kg / 1137.6 g 11.2 N	OK
80 °C	-6.6%	1.11 kg / 1111.5 g 10.9 N
100 °C	-28.8%	0.85 kg / 847.3 g 8.3 N

Classic neodymiums irreversibly lose power after exceeding the maximum temperature. Protect against heat – excessive heat can irreversibly damage this product. As the temperature rises, the magnet's force briefly lowers. Avoid using this magnet in hot environments exceeding its operating temperature limit. Ignoring the limit will lead to irreversible degradation of magnetic properties.

Table 5: Magnet-Magnet interaction (repulsion) - field collision
MW 12x2 / N38

Gap (mm)	Attraction (kg) (N-S)	Repulsion (kg) (N-N)
0 mm	1.79 kg / 1785.0 g 17.5 N	N/A
2 mm	1.02 kg / 1020.0 g 10.0 N	0.95 kg / 952.0 g 9.3 N
5 mm	0.26 kg / 255.0 g 2.5 N	0.24 kg / 238.0 g 2.3 N
10 mm	0.03 kg / 30.0 g 0.3 N	0.03 kg / 28.0 g 0.3 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 magnets attract each other from a significantly greater distance than a magnet and steel setup. The setup of magnet-to-magnet creates a more powerful interaction and a further horizon of operation. Planning to create a powerful holder? Apply two magnets instead of a neodymium and a striker plate. Exercise caution that when connecting a pair of magnets, the collision energy is extreme. The levitation is marginally weaker than the attraction, but still impressive.

Table 6: Protective zones (electronics) - precautionary measures
MW 12x2 / N38

Object / Device	Limit (Gauss) / mT	Safe distance
Pacemaker	5 Gs (0.5 mT)	4.5 cm
Hearing aid	10 Gs (1.0 mT)	3.5 cm
Timepiece	20 Gs (2.0 mT)	3.0 cm
Phone / Smartphone	40 Gs (4.0 mT)	2.5 cm
Remote	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

A strong magnetic field poses a serious hazard to electronic devices as well as pacemakers. These magnets generate a field that destroys function of sensitive medical devices. Remember: the unseen radiation penetrates the body and housings. Special caution must be taken by people with hearing aids and insulin pumps. Also at risk are: automatic timepieces, remotes, speakers, and displays. Avoid contact with magnetic cards, HDD media, or sensitive navigation tools.

Table 7: Collisions (kinetic energy) - warning
MW 12x2 / N38

Start from (mm)	Speed (km/h)	Energy (J)
10 mm	26.91 km/h (7.47 m/s)	0.05 J
30 mm	46.22 km/h (12.84 m/s)	0.14 J
50 mm	59.66 km/h (16.57 m/s)	0.23 J
100 mm	84.38 km/h (23.44 m/s)	0.47 J

Magnetic elements are prone to chipping – a strong collision with metal can result in shattering. Pay attention to connection velocity – a magnet released freely turns into a projectile. Impact energy can cause material chips or injury to fingers. Hold the magnet firmly during bringing near metal so it doesn't slam with momentum against the metal. A contact at a velocity of dozens of km/h almost guarantees destruction of the neodymium. Use safety goggles when handling with powerful specimens.

Table 8: Coating parameters (durability)
MW 12x2 / 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)

Neodymium magnets are highly susceptible to corrosion without proper protection. Improper coating selection is the most common cause of magnet failure over time.

Table 9: Hydrostatics and buoyancy
MW 12x2 / N38

Environment	Effective steel pull	Effect
Air (land)	1.19 kg	Standard
Water (riverbed)	1.36 kg (+0.17 kg Buoyancy gain)	+14.5%

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

In water, the magnet feels stronger thanks to Archimedes' principle. As a result, your magnet will pull a heavier object from the bottom than if you lifted it in the air.

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UMP 107x40 [M8+M10] GW F400 Lina / N38 - search holder

450.00 ZŁ brutto / pcs

This product is an extremely powerful cylinder magnet, composed of modern NdFeB material, which, at dimensions of Ø12x2 mm, guarantees optimal power. The MW 12x2 / N38 model is characterized by an accuracy of ±0.1mm and industrial build quality, making it an excellent solution for the most demanding engineers and designers. As a magnetic rod with significant force (approx. 1.19 kg), this product is in stock from our European logistics center, ensuring rapid order fulfillment. Additionally, its Ni-Cu-Ni coating secures it against corrosion in standard operating conditions, guaranteeing an aesthetic appearance and durability for years.

It finds application in modeling, advanced automation, and broadly understood industry, serving as a fastening or actuating element. Thanks to the pull force of 11.68 N with a weight of only 1.7 g, this cylindrical magnet is indispensable in electronics and wherever low weight is crucial.

Since our magnets have a very precise dimensions, the recommended way is to glue them into holes with a slightly larger diameter (e.g., 12.1 mm) using epoxy glues. To ensure stability in industry, anaerobic resins are used, which do not react with the nickel coating and fill the gap, guaranteeing durability of the connection.

Magnets N38 are strong enough for the majority of applications in automation and machine building, where extreme miniaturization with maximum force is not required. If you need the strongest magnets in the same volume (Ø12x2), contact us regarding higher grades (e.g., N50, N52), however, N38 is the standard in continuous sale in our warehouse.

This model is characterized by dimensions Ø12x2 mm, which, at a weight of 1.7 g, makes it an element with impressive magnetic energy density. The value of 11.68 N means that the magnet is capable of holding a weight many times exceeding its own mass of 1.7 g. The product has a [NiCuNi] coating, which secures it against external factors, giving it an aesthetic, silvery shine.

This cylinder is magnetized axially (along the height of 2 mm), which means that the N and S poles are located on the flat, circular surfaces. 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.

Advantages and disadvantages of NdFeB magnets.

Besides their magnetic performance, neodymium magnets are valued for these benefits:

They virtually do not lose power, because even after 10 years the performance loss is only ~1% (in laboratory conditions),
They show high resistance to demagnetization induced by external magnetic fields,
Thanks to the reflective finish, the surface of nickel, gold, or silver-plated gives an visually attractive appearance,
The surface of neodymium magnets generates a maximum magnetic field – this is a key 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...
In view of the ability of precise forming and adaptation to custom projects, neodymium magnets can be produced in a wide range of forms and dimensions, which amplifies use scope,
Universal use in electronics industry – they are used in magnetic memories, electric motors, medical devices, also multitasking production systems.
Compactness – despite small sizes they provide effective action, making them ideal for precision applications

Cons of neodymium magnets and ways of using them

They are prone to damage upon heavy impacts. To avoid cracks, it is worth securing magnets in a protective case. Such protection not only shields the magnet but also improves its resistance to damage
When exposed to high temperature, neodymium magnets suffer a drop in power. Often, when the temperature exceeds 80°C, their power 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
Due to the susceptibility of magnets to corrosion in a humid environment, we recommend using waterproof magnets made of rubber, plastic or other material stable to moisture, when using outdoors
Due to limitations in producing nuts and complex forms in magnets, we recommend using a housing - magnetic mount.
Potential hazard to health – tiny shards of magnets are risky, in case of ingestion, which becomes key in the context of child health protection. Furthermore, small elements of these magnets are able to disrupt the diagnostic process medical in case of swallowing.
Higher cost of purchase is a significant factor to consider compared to ceramic magnets, especially in budget applications

Optimal lifting capacity of a neodymium magnet – what contributes to it?

Holding force of 1.19 kg is a measurement result conducted under standard conditions:

with the application of a yoke made of special test steel, ensuring maximum field concentration
possessing a thickness of at least 10 mm to ensure full flux closure
with a plane free of scratches
without any air gap between the magnet and steel
under vertical force vector (90-degree angle)
at standard ambient temperature

Lifting capacity in practice – influencing factors

Real force is affected by specific conditions, including (from priority):

Distance – existence of foreign body (paint, dirt, air) acts as an insulator, which reduces power rapidly (even by 50% at 0.5 mm).
Force direction – declared lifting capacity refers to pulling vertically. When attempting to slide, the magnet exhibits much less (typically approx. 20-30% of nominal force).
Base massiveness – insufficiently thick steel does not accept the full field, causing part of the power to be lost into the air.
Steel type – mild steel gives the best results. Higher carbon content decrease magnetic properties and holding force.
Surface structure – the more even the surface, the better the adhesion and stronger the hold. Unevenness creates an air distance.
Thermal conditions – neodymium magnets have a sensitivity to temperature. When it is hot they are weaker, and at low temperatures they can be stronger (up to a certain limit).

* Lifting capacity testing was carried out on plates with a smooth surface of suitable thickness, under perpendicular forces, whereas under attempts to slide the magnet the holding force is lower. Moreover, even a minimal clearance {between} the magnet’s surface and the plate lowers the lifting capacity.

Precautions when working with neodymium magnets

Pinching danger

Protect your hands. Two powerful magnets will snap together immediately with a force of several hundred kilograms, destroying everything in their path. Be careful!

Adults only

Strictly keep magnets out of reach of children. Ingestion danger is high, and the effects of magnets connecting inside the body are fatal.

Handling guide

Handle magnets consciously. Their immense force can shock even experienced users. Stay alert and do not underestimate their power.

Combustion hazard

Machining of neodymium magnets carries a risk of fire hazard. Neodymium dust oxidizes rapidly with oxygen and is hard to extinguish.

Data carriers

Avoid bringing magnets close to a purse, computer, or screen. The magnetic field can irreversibly ruin these devices and wipe information from cards.

Threat to navigation

Remember: rare earth magnets produce a field that interferes with sensitive sensors. Keep a safe distance from your mobile, device, and navigation systems.

Medical implants

Patients with a pacemaker should maintain an large gap from magnets. The magnetic field can disrupt the functioning of the life-saving device.

Heat sensitivity

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

Skin irritation risks

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

Shattering risk

Beware of splinters. Magnets can explode upon uncontrolled impact, ejecting sharp fragments into the air. Eye protection is mandatory.

Danger!

Learn more about hazards in the article: Safety of working with magnets.

MW 12x2 / N38 - cylindrical magnet

MW 12x2 / N38 - cylindrical magnet

Magnetic properties of material N38

Physical properties of sintered neodymium magnets Nd2Fe14B at 20°C

Engineering modeling of the product - data

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Advantages and disadvantages of NdFeB magnets.

Optimal lifting capacity of a neodymium magnet – what contributes to it?

Lifting capacity in practice – influencing factors

Precautions when working with neodymium magnets

Physical properties of sintered neodymium magnets Nd₂Fe₁₄B at 20°C