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MW 16x9 / N38 - cylindrical magnet

cylindrical magnet

Catalog no 010035

GTIN/EAN: 5906301810346

5.00

Diameter Ø

16 mm [±0,1 mm]

Height

9 mm [±0,1 mm]

Weight

13.57 g

Magnetization Direction

↑ axial

Load capacity

8.53 kg / 83.64 N

Magnetic Induction

463.05 mT / 4631 Gs

Coating

[NiCuNi] Nickel

technical parameters »

7.36 ZŁ with VAT / pcs + price for transport

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Technical parameters - MW 16x9 / N38 - cylindrical magnet

Specification / characteristics - MW 16x9 / N38 - cylindrical magnet

properties
properties values
Cat. no. 010035
GTIN/EAN 5906301810346
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 16 mm [±0,1 mm]
Height 9 mm [±0,1 mm]
Weight 13.57 g
Magnetization Direction ↑ axial
Load capacity ~ ? 8.53 kg / 83.64 N
Magnetic Induction ~ ? 463.05 mT / 4631 Gs
Coating [NiCuNi] Nickel
Manufacturing Tolerance ±0.1 mm

Magnetic properties of material N38

Specification / characteristics MW 16x9 / 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

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 assembly - report

The following information represent the direct effect of a physical simulation. Results rely on models for the class Nd2Fe14B. Real-world conditions may differ. Please consider these calculations as a preliminary roadmap for designers.

Table 1: Static force (pull vs distance) - power drop
MW 16x9 / N38

Distance (mm) Induction (Gauss) / mT Pull Force (kg/lbs/g/N) Risk Status
0 mm 4628 Gs
462.8 mT
 8.53 kg / 18.81 pounds
8530.0 g / 83.7 N
 medium risk
1 mm 4072 Gs
407.2 mT
 6.60 kg / 14.56 pounds
6603.5 g / 64.8 N
 medium risk
2 mm 3510 Gs
351.0 mT
 4.91 kg / 10.82 pounds
4906.8 g / 48.1 N
 medium risk
3 mm 2982 Gs
298.2 mT
 3.54 kg / 7.80 pounds
3540.1 g / 34.7 N
 medium risk
5 mm 2097 Gs
209.7 mT
 1.75 kg / 3.86 pounds
1751.1 g / 17.2 N
 low risk
10 mm 873 Gs
87.3 mT
 0.30 kg / 0.67 pounds
303.3 g / 3.0 N
 low risk
15 mm 411 Gs
41.1 mT
 0.07 kg / 0.15 pounds
67.3 g / 0.7 N
 low risk
20 mm 220 Gs
22.0 mT
 0.02 kg / 0.04 pounds
19.3 g / 0.2 N
 low risk
30 mm 83 Gs
8.3 mT
 0.00 kg / 0.01 pounds
2.7 g / 0.0 N
 low risk
50 mm 22 Gs
2.2 mT
 0.00 kg / 0.00 pounds
0.2 g / 0.0 N
 low risk
Magnetic force decreases significantly with every mm of gap. Keep in mind that even a microscopic distance (e.g., contamination, varnish, dust) strongly reduces the pull force. Neodymiums operate strongest at the point of direct contact; distance weakens the force. See how rapidly the load capacity drop, when the magnet does not adhere flatly to the metal substrate. When designing the arrangement, avoid unnecessary gaps.

Table 2: Slippage capacity (vertical surface)
MW 16x9 / N38

Distance (mm) Friction coefficient Pull Force (kg/lbs/g/N)
0 mm Stal (~0.2) 1.71 kg / 3.76 pounds
1706.0 g / 16.7 N
1 mm Stal (~0.2) 1.32 kg / 2.91 pounds
1320.0 g / 12.9 N
2 mm Stal (~0.2) 0.98 kg / 2.16 pounds
982.0 g / 9.6 N
3 mm Stal (~0.2) 0.71 kg / 1.56 pounds
708.0 g / 6.9 N
5 mm Stal (~0.2) 0.35 kg / 0.77 pounds
350.0 g / 3.4 N
10 mm Stal (~0.2) 0.06 kg / 0.13 pounds
60.0 g / 0.6 N
15 mm Stal (~0.2) 0.01 kg / 0.03 pounds
14.0 g / 0.1 N
20 mm Stal (~0.2) 0.00 kg / 0.01 pounds
4.0 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
This section shows the approximate weight limit required to start the slippage of the magnet downwards against a upright steel plate (assuming standard friction). This parameter varies with the air gap between the magnet and the metal.

Table 3: Vertical assembly (shearing) - behavior on slippery surfaces
MW 16x9 / N38

Surface type Friction coefficient / % Mocy Max load (kg/lbs/g/N)
Raw steel
µ = 0.3 30% Nominalnej Siły
2.56 kg / 5.64 pounds
2559.0 g / 25.1 N
Painted steel (standard)
µ = 0.2 20% Nominalnej Siły
1.71 kg / 3.76 pounds
1706.0 g / 16.7 N
Oily/slippery steel
µ = 0.1 10% Nominalnej Siły
0.85 kg / 1.88 pounds
853.0 g / 8.4 N
Magnet with anti-slip rubber
µ = 0.5 50% Nominalnej Siły
4.27 kg / 9.40 pounds
4265.0 g / 41.8 N
When hanging a magnet on a upright wall (e.g., a fridge), it will only hold barely about 1/5 of its maximum pull force. Gravitational force and a weak degree of grip cause that holders slip faster than they pull off. Designing a wall mount? Consider that the shear force is noticeably lower than the perpendicular breakaway force. On a slippery surface, the element will slip down under a noticeably lighter weight. Application of an anti-slip pad can drastically improve the result.

Table 4: Steel thickness (saturation) - power losses
MW 16x9 / N38

Steel thickness (mm) % power Real pull force (kg/lbs/g/N)
0.5 mm
10%
 0.85 kg / 1.88 pounds
853.0 g / 8.4 N
1 mm
25%
 2.13 kg / 4.70 pounds
2132.5 g / 20.9 N
2 mm
50%
 4.27 kg / 9.40 pounds
4265.0 g / 41.8 N
3 mm
75%
 6.40 kg / 14.10 pounds
6397.5 g / 62.8 N
5 mm
100%
 8.53 kg / 18.81 pounds
8530.0 g / 83.7 N
10 mm
100%
 8.53 kg / 18.81 pounds
8530.0 g / 83.7 N
11 mm
100%
 8.53 kg / 18.81 pounds
8530.0 g / 83.7 N
12 mm
100%
 8.53 kg / 18.81 pounds
8530.0 g / 83.7 N
A too thin steel cannot absorb the full magnetic flux, which wastes potential of the magnet. If you attach a powerful product to a too thin substrate, the magnetism will penetrate right through and the attraction force will be weaker. To squeeze full efficiency of this magnet's power, you require a sufficiently solid element of steel. The material oversaturation causes that on thin elements (e.g., thin profiles), the holder works worse. We advise picking the steel thickness based on the following data.

Table 5: Working in heat (material behavior) - resistance threshold
MW 16x9 / N38

Ambient temp. (°C) Power loss Remaining pull (kg/lbs/g/N) Status
20 °C 0.0% 8.53 kg / 18.81 pounds
8530.0 g / 83.7 N
 OK
40 °C -2.2% 8.34 kg / 18.39 pounds
8342.3 g / 81.8 N
 OK
60 °C -4.4% 8.15 kg / 17.98 pounds
8154.7 g / 80.0 N
 OK
80 °C -6.6% 7.97 kg / 17.56 pounds
7967.0 g / 78.2 N
100 °C -28.8% 6.07 kg / 13.39 pounds
6073.4 g / 59.6 N
Classic neodymiums lose power past the thermal threshold. Avoid high temperatures – high temperature can permanently demagnetize this product. With every degree above norm, the magnet's force temporarily drops. Refrain from using this magnet in hot environments higher than its working range. Too high temperature will cause irreversible degradation of magnetism.
*Important note: Temperature resistance is determined by both grade, but also on the magnet's shape. Flat magnets (low permeance coefficient) may lose charge permanently sooner than taller cylinders. Warning indicator in the table signals a risk of irreversible loss for this particular item.

Table 6: Magnet-Magnet interaction (attraction) - field collision
MW 16x9 / N38

Gap (mm) Attraction (kg/lbs) (N-S) Shear Force (kg/lbs/g/N) Repulsion (kg/lbs) (N-N)
0 mm 26.55 kg / 58.54 pounds
5 658 Gs
3.98 kg / 8.78 pounds
3983 g / 39.1 N
 N/A
1 mm 23.52 kg / 51.85 pounds
8 711 Gs
3.53 kg / 7.78 pounds
3528 g / 34.6 N
 21.17 kg / 46.66 pounds
~0 Gs
2 mm 20.56 kg / 45.32 pounds
8 145 Gs
3.08 kg / 6.80 pounds
3084 g / 30.2 N
 18.50 kg / 40.79 pounds
~0 Gs
3 mm 17.80 kg / 39.23 pounds
7 578 Gs
2.67 kg / 5.89 pounds
2669 g / 26.2 N
 16.02 kg / 35.31 pounds
~0 Gs
5 mm 13.01 kg / 28.69 pounds
6 481 Gs
1.95 kg / 4.30 pounds
1952 g / 19.2 N
 11.71 kg / 25.82 pounds
~0 Gs
10 mm 5.45 kg / 12.02 pounds
4 194 Gs
0.82 kg / 1.80 pounds
818 g / 8.0 N
 4.91 kg / 10.82 pounds
~0 Gs
20 mm 0.94 kg / 2.08 pounds
1 746 Gs
0.14 kg / 0.31 pounds
142 g / 1.4 N
 0.85 kg / 1.87 pounds
~0 Gs
50 mm 0.02 kg / 0.05 pounds
260 Gs
0.00 kg / 0.01 pounds
3 g / 0.0 N
 0.02 kg / 0.04 pounds
~0 Gs
60 mm 0.01 kg / 0.02 pounds
166 Gs
0.00 kg / 0.00 pounds
1 g / 0.0 N
 0.00 kg / 0.00 pounds
~0 Gs
70 mm 0.00 kg / 0.01 pounds
112 Gs
0.00 kg / 0.00 pounds
1 g / 0.0 N
 0.00 kg / 0.00 pounds
~0 Gs
80 mm 0.00 kg / 0.00 pounds
79 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
58 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
43 Gs
0.00 kg / 0.00 pounds
0 g / 0.0 N
 0.00 kg / 0.00 pounds
~0 Gs
Two strong neodymiums interact from a wider radius than a neodymium and metal setup. The setup of magnet-to-magnet creates a more powerful interaction and a wider radius of operation. Designing a solid fastener? Apply two magnets instead of a neodymium and a steel. Be careful that when attracting two neodymiums, the pinch force is massive. The levitation is marginally weaker than the connection force, but still impressive.
*The magnetic induction in repulsion mode reaches ~0 Gs at the midpoint between the magnets (resulting from vector opposition).
Important: Results apply to sliding force of a pair of same magnets (friction ~0.15 for Ni-Ni plating).

Table 7: Protective zones (implants) - precautionary measures
MW 16x9 / N38

Object / Device Limit (Gauss) / mT Safe distance
Pacemaker 5 Gs (0.5 mT) 8.5 cm
Hearing aid 10 Gs (1.0 mT) 7.0 cm
Mechanical watch 20 Gs (2.0 mT) 5.5 cm
Mobile device 40 Gs (4.0 mT) 4.0 cm
Car key 50 Gs (5.0 mT) 4.0 cm
Payment card 400 Gs (40.0 mT) 2.0 cm
HDD hard drive 600 Gs (60.0 mT) 1.5 cm
Powerful magnet radiation poses a serious hazard to electronic devices as well as medical implants. These neodymiums generate a field that prevents correct functioning of digital equipment. Notice: the unseen radiation penetrates the body and plastic. Exceptional care must be exercised by people with hearing aids and drug dispensers. The risk also applies to: mechanical watches, car keys, membranes, and displays. Avoid contact with magnetic cards, hard drives, or sensitive navigation tools.

Table 8: Dynamics (cracking risk) - warning
MW 16x9 / N38

Start from (mm) Speed (km/h) Energy (J) Predicted outcome
10 mm 25.84 km/h
(7.18 m/s)
 0.35 J
30 mm 43.80 km/h
(12.17 m/s)
 1.00 J
50 mm 56.54 km/h
(15.71 m/s)
 1.67 J
100 mm 79.96 km/h
(22.21 m/s)
 3.35 J
Neodymium magnets are very brittle – a violent impact against metal can result in shattering. Pay attention to connection velocity – a neodymium left loose becomes dangerous. Impact energy can destroy the magnet or painful pinches to skin. Be sure to control the product during bringing near metal so it doesn't hit violently against the steel surface. A contact at a velocity of dozens of km/h means shattering of the magnet. Wear eye protection when handling with large magnets.

Table 9: Surface protection spec
MW 16x9 / 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 10: Construction data (Flux)
MW 16x9 / N38

Parameter Value SI Unit / Description
Magnetic Flux 9 394 Mx 93.9 µWb
Pc Coefficient 0.63 High (Stable)
Flux value passing through the pole surface. Key data for generator designers and motors. Pc value defines the working geometry.

Table 11: Submerged application
MW 16x9 / N38

Environment Effective steel pull Effect
Air (land) 8.53 kg Standard
Water (riverbed) 9.77 kg
(+1.24 kg buoyancy gain)
+14.5%
Rust risk: Remember to wipe the magnet thoroughly after removing it from water and apply a protective layer (e.g., oil) to avoid corrosion.
Contrary to myths, water does not block the magnetic field. Note: for permanent underwater work, we recommend magnets with an anti-corrosive (epoxy) coating.
1. Sliding resistance

*Note: On a vertical surface, the magnet retains merely approx. 20-30% of its nominal pull.

2. Steel thickness impact

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

3. Power loss vs temp

*For standard magnets, the max working temp is 80°C.

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

chart generated for the permeance coefficient Pc (Permeance Coefficient) = 0.63

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 Pc (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 Pc 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
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%
Ecology and recycling (GPSR)
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: 010035-2026
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The presented product is a very strong cylindrical magnet, composed of durable NdFeB material, which, at dimensions of Ø16x9 mm, guarantees maximum efficiency. This specific item features a tolerance of ±0.1mm and professional build quality, making it a perfect solution for professional engineers and designers. As a cylindrical magnet with significant force (approx. 8.53 kg), this product is in stock from our warehouse in Poland, ensuring lightning-fast order fulfillment. Moreover, its Ni-Cu-Ni coating effectively protects it against corrosion in typical operating conditions, ensuring an aesthetic appearance and durability for years.
This model is created for building generators, advanced Hall effect sensors, and efficient filters, where field concentration on a small surface counts. Thanks to the high power of 83.64 N with a weight of only 13.57 g, this cylindrical magnet is indispensable in miniature devices and wherever low weight is crucial.
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 the majority of applications in automation and machine building, where excessive miniaturization with maximum force is not required. If you need the strongest magnets in the same volume (Ø16x9), 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 Ø16x9 mm, which, at a weight of 13.57 g, makes it an element with impressive magnetic energy density. The value of 83.64 N means that the magnet is capable of holding a weight many times exceeding its own mass of 13.57 g. The product has a [NiCuNi] coating, which protects the surface 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 16 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.

Pros as well as cons of rare earth magnets.

Strengths

Besides their exceptional magnetic power, neodymium magnets offer the following advantages:
  • They retain full power for around 10 years – the loss is just ~1% (according to analyses),
  • They do not lose their magnetic properties even under strong external field,
  • By covering with a shiny layer of silver, the element presents an proper look,
  • Neodymium magnets ensure maximum magnetic induction on a their surface, which increases force concentration,
  • 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 the ability of free shaping and customization to individualized requirements, neodymium magnets can be created in a variety of shapes and sizes, which expands the range of possible applications,
  • Universal use in advanced technology sectors – they serve a role in mass storage devices, electromotive mechanisms, medical equipment, and technologically advanced constructions.
  • Compactness – despite small sizes they generate large force, making them ideal for precision applications

Disadvantages

Disadvantages of neodymium magnets:
  • To avoid cracks upon strong impacts, we recommend using special steel holders. Such a solution protects the magnet and simultaneously improves its 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.
  • When exposed to humidity, magnets start to rust. To use them in conditions outside, it is recommended to use protective magnets, such as those in rubber or plastics, which secure oxidation as well as corrosion.
  • Limited ability of producing threads in the magnet and complicated forms - recommended is cover - magnet mounting.
  • Health risk resulting from small fragments of magnets pose a threat, when accidentally swallowed, which becomes key in the context of child health protection. Additionally, tiny parts of these devices can complicate diagnosis medical in case of swallowing.
  • Higher cost of purchase is a significant factor to consider compared to ceramic magnets, especially in budget applications

Pull force analysis

Best holding force of the magnet in ideal parameters – what contributes to it?

The specified lifting capacity refers to the peak performance, measured under optimal environment, specifically:
  • using a plate made of mild steel, serving as a circuit closing element
  • whose transverse dimension reaches at least 10 mm
  • with an polished contact surface
  • without any clearance between the magnet and steel
  • during detachment in a direction perpendicular to the plane
  • in temp. approx. 20°C

Magnet lifting force in use – key factors

During everyday use, the real power depends on several key aspects, listed from the most important:
  • Distance – existence of any layer (rust, dirt, air) acts as an insulator, which lowers capacity rapidly (even by 50% at 0.5 mm).
  • Force direction – 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.
  • Metal thickness – thin material does not allow full use of the magnet. Part of the magnetic field penetrates through instead of converting into lifting capacity.
  • Chemical composition of the base – mild steel gives the best results. Alloy admixtures lower magnetic permeability and holding force.
  • Base smoothness – the smoother and more polished the surface, the better the adhesion and stronger the hold. Roughness acts like micro-gaps.
  • Heat – NdFeB sinters have a negative temperature coefficient. At higher temperatures they lose power, and in frost gain strength (up to a certain limit).

Holding force was tested on a smooth steel plate of 20 mm thickness, when a perpendicular force was applied, in contrast under shearing force the load capacity is reduced by as much as fivefold. Additionally, even a minimal clearance between the magnet’s surface and the plate decreases the holding force.

H&S for magnets
Cards and drives

Do not bring magnets close to a wallet, laptop, or screen. The magnetism can destroy these devices and erase data from cards.

Safe operation

Use magnets consciously. Their huge power can surprise even experienced users. Plan your moves and respect their power.

Medical implants

Patients with a ICD should maintain an safe separation from magnets. The magnetic field can interfere with the functioning of the life-saving device.

Threat to navigation

An intense magnetic field disrupts the functioning of magnetometers in smartphones and navigation systems. Keep magnets close to a smartphone to avoid breaking the sensors.

Nickel allergy

Nickel alert: The Ni-Cu-Ni coating consists of nickel. If skin irritation occurs, cease handling magnets and use protective gear.

No play value

Only for adults. Small elements pose a choking risk, causing serious injuries. Store out of reach of kids and pets.

Fire risk

Powder produced during grinding of magnets is flammable. Avoid drilling into magnets unless you are an expert.

Heat warning

Regular neodymium magnets (N-type) undergo demagnetization when the temperature goes above 80°C. This process is irreversible.

Risk of cracking

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

Finger safety

Big blocks can break fingers in a fraction of a second. Do not place your hand between two strong magnets.

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