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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

check technical specifications »

7.36 ZŁ with VAT / pcs + price for transport

5.98 ZŁ net + 23% VAT / pcs

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

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Physical properties - 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

Engineering modeling of the assembly - data

Presented data represent the result of a mathematical calculation. Results rely on algorithms for the material Nd2Fe14B. Operational parameters might slightly differ. Treat these data as a preliminary roadmap for designers.

Table 1: Static force (pull vs gap) - characteristics
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
 warning
1 mm 4072 Gs
407.2 mT
 6.60 kg / 14.56 pounds
6603.5 g / 64.8 N
 warning
2 mm 3510 Gs
351.0 mT
 4.91 kg / 10.82 pounds
4906.8 g / 48.1 N
 warning
3 mm 2982 Gs
298.2 mT
 3.54 kg / 7.80 pounds
3540.1 g / 34.7 N
 warning
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 sharply with every subsequent millimeter of distance. Keep in mind that even the smallest gap (e.g., contamination, varnish, veneer) noticeably weakens the grip. Neodymiums work optimally at the point of direct contact; distance drastically cuts the force. See how flashily the load capacity fall, when the product does not touch flatly to the steel surface. When calculating the arrangement, discard additional spacers.

Table 2: Slippage load (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
The following data presents the approximate force sufficient to start the slippage of the magnet downwards against a vertical metal surface (assuming standard friction coefficient). The holding force depends on the separation distance between the magnet and the metal.

Table 3: Wall mounting (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 mounting a element on a vertical wall (e.g., a fridge), it will maintain only about 1/5 of its maximum pull force. Gravity and a weak degree of grip influence the fact that magnets move down easier than they detach. Designing a hanger? Remember that the shear force is significantly lower than the perpendicular breakaway force. On a slippery surface, the element will slide down under a significantly smaller load. Utilizing a rubberized pad can drastically raise the stability.

Table 4: Material efficiency (substrate influence) - sheet metal selection
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 thin sheet cannot absorb the full magnetic flux, which squanders power of the magnet. Should you attach a powerful product to a weak sheet, the field will pass right through and the holding will be smaller. To utilize 100% of this magnet's potential, you need a suitably thick element of steel. The saturation phenomenon means that on delicate walls (e.g., appliance housings), the magnet holds weaker. We recommend selecting the steel thickness according to the table below.

Table 5: Thermal resistance (stability) - 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
Ordinary NdFeB products change their properties power after exceeding the maximum temperature. Protect against heat – high temperature can irreversibly demagnetize this magnet. As the temperature rises, the neodymium's capacity briefly decreases. Avoid using this product near heat sources exceeding its safe range. Too high temperature will lead to destruction of magnetism.
*Technical advisory: Thermal stability depends not only on the material grade, as well as the dimension ratios. Thin magnets (low Pc) are more susceptible to demagnetization at lower temperatures than taller cylinders. The danger warning in the table points to a risk of irreversible loss for this specific geometry.

Table 6: Two magnets (attraction) - forces in the system
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 attract each other from a significantly greater distance than a magnet and steel setup. The connection of two magnets produces a massive flux and a further horizon of operation. Designing a powerful holder? Apply two magnets instead of one magnet and a striker plate. Exercise caution that when bringing together two magnets, the impact force is massive. The levitation is marginally weaker than the connection force, but still significant.
*Field value between like poles reaches ~0 Gs in the exact middle of the gap (due to field cancellation).
Attention: Estimates demonstrate shear force of a pair of matching magnets (friction ~0.15 for Ni-Ni layer).

Table 7: Safety (HSE) (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
Phone / Smartphone 40 Gs (4.0 mT) 4.0 cm
Remote 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 real danger to IT equipment and pacemakers. These neodymiums generate a flux that destroys function of sensitive medical devices. Be aware: the invisible magnetic field passes through tissues and glass. Exceptional care must be exercised by people with hearing aids and insulin pumps. Influence will be felt by: automatic timepieces, remotes, speakers, and screens. Do not place the magnet near cards, hard drives, or precise measuring instruments.

Table 8: Impact energy (kinetic energy) - collision effects
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 strong collision with metal can result in shattering. Control the attraction moment – a magnet released freely speeds with massive force. Striking energy can destroy the magnet or injury to skin. 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 means shattering of the magnet. Wear eye protection when working with large magnets.

Table 9: Anti-corrosion coating durability
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. Note the thickness of the protective layer.

Table 10: Electrical data (Pc)
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. Essential parameter when building generators and motors. Pc value determines the working geometry.

Table 11: Underwater work (magnet fishing)
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.
The magnetic field penetrates through water without any losses. Buoyancy helps in lifting finds.
1. Vertical hold

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

2. Steel thickness impact

*Thin metal sheet (e.g. 0.5mm PC case) significantly weakens 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 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 an incredibly powerful cylindrical magnet, produced from durable NdFeB material, which, at dimensions of Ø16x9 mm, guarantees optimal power. The MW 16x9 / N38 model features an accuracy of ±0.1mm and professional build quality, making it an excellent solution for professional engineers and designers. As a cylindrical magnet with impressive force (approx. 8.53 kg), this product is available off-the-shelf from our European logistics center, ensuring rapid order fulfillment. Furthermore, its triple-layer Ni-Cu-Ni coating effectively protects it against corrosion in standard operating conditions, guaranteeing an aesthetic appearance and durability for years.
It successfully proves itself in DIY projects, advanced robotics, and broadly understood industry, serving as a positioning or actuating element. Thanks to the pull force of 83.64 N with a weight of only 13.57 g, this rod is indispensable in electronics and wherever low weight is crucial.
Since our magnets have a very precise dimensions, the best method is to glue them into holes with a slightly larger diameter (e.g., 16.1 mm) using two-component epoxy glues. To ensure long-term durability in automation, specialized industrial adhesives are used, which are safe for nickel and fill the gap, guaranteeing high repeatability of the connection.
Grade N38 is the most frequently chosen standard for professional neodymium magnets, offering a great economic balance and high resistance to demagnetization. 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 store.
The presented product is a neodymium magnet with precisely defined parameters: diameter 16 mm and height 9 mm. The key parameter here is the holding force amounting to approximately 8.53 kg (force ~83.64 N), which, with such defined dimensions, proves the high grade of the NdFeB material. 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 9 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.

Strengths as well as weaknesses of neodymium magnets.

Advantages

Besides their high retention, neodymium magnets are valued for these benefits:
  • They virtually do not lose power, because even after 10 years the decline in efficiency is only ~1% (in laboratory conditions),
  • They feature excellent resistance to weakening of magnetic properties when exposed to opposing magnetic fields,
  • The use of an metallic finish of noble metals (nickel, gold, silver) causes the element to be more visually attractive,
  • Magnets have extremely high magnetic induction on the outer layer,
  • Made from properly selected components, these magnets show impressive resistance to high heat, enabling them to function (depending on their shape) at temperatures up to 230°C and above...
  • Possibility of individual machining and adapting to precise requirements,
  • Universal use in high-tech industry – they are commonly used in magnetic memories, electric drive systems, advanced medical instruments, also industrial machines.
  • Relatively small size with high pulling force – neodymium magnets offer high power in small dimensions, which makes them useful in small systems

Disadvantages

Drawbacks and weaknesses of neodymium magnets: tips and applications.
  • At strong impacts they can crack, therefore we recommend placing them in strong housings. A metal housing provides additional protection against damage and increases the magnet's durability.
  • Neodymium magnets demagnetize when exposed to high temperatures. After reaching 80°C, many of them experience permanent drop of power (a factor is the shape and dimensions of the magnet). We offer magnets specially adapted to work at temperatures up to 230°C marked [AH], which are extremely resistant to heat
  • Due to the susceptibility of magnets to corrosion in a humid environment, we suggest using waterproof magnets made of rubber, plastic or other material immune to moisture, when using outdoors
  • We recommend a housing - magnetic mechanism, due to difficulties in producing nuts inside the magnet and complicated shapes.
  • Health risk resulting from small fragments of magnets can be dangerous, when accidentally swallowed, which is particularly important in the context of child health protection. Additionally, tiny parts of these devices can be problematic in diagnostics medical when they are in the body.
  • Higher cost of purchase is a significant factor to consider compared to ceramic magnets, especially in budget applications

Lifting parameters

Optimal lifting capacity of a neodymium magnet – what it depends on?

The declared magnet strength concerns the limit force, obtained under ideal test conditions, namely:
  • with the use of a yoke made of low-carbon steel, guaranteeing full magnetic saturation
  • with a cross-section minimum 10 mm
  • with a surface cleaned and smooth
  • under conditions of ideal adhesion (surface-to-surface)
  • during detachment in a direction perpendicular to the plane
  • at standard ambient temperature

Lifting capacity in real conditions – factors

It is worth knowing that the working load may be lower depending on elements below, in order of importance:
  • Distance (between the magnet and the metal), since even a very small clearance (e.g. 0.5 mm) results in a decrease in force by up to 50% (this also applies to varnish, rust or dirt).
  • Loading method – catalog parameter refers to pulling vertically. When applying parallel force, the magnet holds much less (typically approx. 20-30% of nominal force).
  • Substrate thickness – for full efficiency, the steel must be adequately massive. Paper-thin metal limits the attraction force (the magnet "punches through" it).
  • Metal type – different alloys attracts identically. High carbon content weaken the interaction with the magnet.
  • Base smoothness – the smoother and more polished the plate, the better the adhesion and higher the lifting capacity. Roughness creates an air distance.
  • Thermal factor – hot environment weakens pulling force. Too high temperature can permanently demagnetize the magnet.

Lifting capacity testing was performed on plates with a smooth surface of suitable thickness, under perpendicular forces, however under parallel forces the holding force is lower. Moreover, even a minimal clearance between the magnet and the plate lowers the holding force.

H&S for magnets
Bodily injuries

Danger of trauma: The attraction force is so great that it can result in blood blisters, pinching, and broken bones. Protective gloves are recommended.

Keep away from children

Always store magnets away from children. Choking hazard is high, and the consequences of magnets connecting inside the body are fatal.

Fire risk

Powder produced during cutting of magnets is combustible. Do not drill into magnets unless you are an expert.

Permanent damage

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

Magnets are brittle

Beware of splinters. Magnets can explode upon violent connection, ejecting sharp fragments into the air. Wear goggles.

Nickel coating and allergies

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

Phone sensors

Navigation devices and mobile phones are extremely sensitive to magnetic fields. Close proximity with a powerful NdFeB magnet can decalibrate the internal compass in your phone.

Keep away from computers

Do not bring magnets close to a purse, laptop, or TV. The magnetism can permanently damage these devices and wipe information from cards.

Danger to pacemakers

For implant holders: Strong magnetic fields disrupt medical devices. Maintain minimum 30 cm distance or ask another person to handle the magnets.

Respect the power

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

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