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MW 9.5x1 / N38 - cylindrical magnet

cylindrical magnet

Catalog no 010107

GTIN/EAN: 5906301811060

5.00

Diameter Ø

9.5 mm [±0,1 mm]

Height

1 mm [±0,1 mm]

Weight

0.53 g

Magnetization Direction

↑ axial

Load capacity

0.40 kg / 3.96 N

Magnetic Induction

127.68 mT / 1277 Gs

Coating

[NiCuNi] Nickel

product specifications »

0.295 ZŁ with VAT / pcs + price for transport

0.240 ZŁ net + 23% VAT / pcs

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Technical details - MW 9.5x1 / N38 - cylindrical magnet

Specification / characteristics - MW 9.5x1 / N38 - cylindrical magnet

properties
properties values
Cat. no. 010107
GTIN/EAN 5906301811060
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 9.5 mm [±0,1 mm]
Height 1 mm [±0,1 mm]
Weight 0.53 g
Magnetization Direction ↑ axial
Load capacity ~ ? 0.40 kg / 3.96 N
Magnetic Induction ~ ? 127.68 mT / 1277 Gs
Coating [NiCuNi] Nickel
Manufacturing Tolerance ±0.1 mm

Magnetic properties of material N38

Specification / characteristics MW 9.5x1 / 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

Physical simulation of the assembly - technical parameters

These information are the direct effect of a physical simulation. Results rely on algorithms for the class Nd2Fe14B. Real-world parameters might slightly differ. Treat these data as a supplementary guide for designers.

Table 1: Static force (pull vs gap) - power drop
MW 9.5x1 / N38

Distance (mm) Induction (Gauss) / mT Pull Force (kg/lbs/g/N) Risk Status
0 mm 1276 Gs
127.6 mT
 0.40 kg / 0.88 lbs
400.0 g / 3.9 N
 low risk
1 mm 1129 Gs
112.9 mT
 0.31 kg / 0.69 lbs
312.8 g / 3.1 N
 low risk
2 mm 905 Gs
90.5 mT
 0.20 kg / 0.44 lbs
201.0 g / 2.0 N
 low risk
3 mm 683 Gs
68.3 mT
 0.11 kg / 0.25 lbs
114.5 g / 1.1 N
 low risk
5 mm 366 Gs
36.6 mT
 0.03 kg / 0.07 lbs
32.9 g / 0.3 N
 low risk
10 mm 92 Gs
9.2 mT
 0.00 kg / 0.00 lbs
2.1 g / 0.0 N
 low risk
15 mm 33 Gs
3.3 mT
 0.00 kg / 0.00 lbs
0.3 g / 0.0 N
 low risk
20 mm 15 Gs
1.5 mT
 0.00 kg / 0.00 lbs
0.1 g / 0.0 N
 low risk
30 mm 5 Gs
0.5 mT
 0.00 kg / 0.00 lbs
0.0 g / 0.0 N
 low risk
50 mm 1 Gs
0.1 mT
 0.00 kg / 0.00 lbs
0.0 g / 0.0 N
 low risk
Magnetic force drops drastically with every subsequent millimeter of gap. Keep in mind that even a very thin break (e.g., contamination, paint, rust) significantly reduces the pull force. Magnetic products hold most effectively during direct contact; gap drastically cuts the power. Notice how rapidly the pull force drop, when the magnet does not adhere flatly to the metal substrate. When calculating the arrangement, discard redundant distances.

Table 2: Vertical capacity (wall)
MW 9.5x1 / N38

Distance (mm) Friction coefficient Pull Force (kg/lbs/g/N)
0 mm Stal (~0.2) 0.08 kg / 0.18 lbs
80.0 g / 0.8 N
1 mm Stal (~0.2) 0.06 kg / 0.14 lbs
62.0 g / 0.6 N
2 mm Stal (~0.2) 0.04 kg / 0.09 lbs
40.0 g / 0.4 N
3 mm Stal (~0.2) 0.02 kg / 0.05 lbs
22.0 g / 0.2 N
5 mm Stal (~0.2) 0.01 kg / 0.01 lbs
6.0 g / 0.1 N
10 mm Stal (~0.2) 0.00 kg / 0.00 lbs
0.0 g / 0.0 N
15 mm Stal (~0.2) 0.00 kg / 0.00 lbs
0.0 g / 0.0 N
20 mm Stal (~0.2) 0.00 kg / 0.00 lbs
0.0 g / 0.0 N
30 mm Stal (~0.2) 0.00 kg / 0.00 lbs
0.0 g / 0.0 N
50 mm Stal (~0.2) 0.00 kg / 0.00 lbs
0.0 g / 0.0 N
The table below defines the approximate shear load sufficient to cause the downward movement of the magnet down on a vertical metal surface (considering standard friction coefficient). This value depends on the separation distance between the magnet and the surface.

Table 3: Wall mounting (shearing) - behavior on slippery surfaces
MW 9.5x1 / N38

Surface type Friction coefficient / % Mocy Max load (kg/lbs/g/N)
Raw steel
µ = 0.3 30% Nominalnej Siły
0.12 kg / 0.26 lbs
120.0 g / 1.2 N
Painted steel (standard)
µ = 0.2 20% Nominalnej Siły
0.08 kg / 0.18 lbs
80.0 g / 0.8 N
Oily/slippery steel
µ = 0.1 10% Nominalnej Siły
0.04 kg / 0.09 lbs
40.0 g / 0.4 N
Magnet with anti-slip rubber
µ = 0.5 50% Nominalnej Siły
0.20 kg / 0.44 lbs
200.0 g / 2.0 N
When placing a holder on a upright surface (e.g., a board), it you can count on only about 1/5 of nominal attraction strength. Gravity and a weak degree of grip influence the fact that magnets slide down easier than they pull off. Want to create a vertical fastening? Remember that the sliding force is significantly lower than the perpendicular breakaway force. On a painted metal, the magnet will slide down under a significantly smaller weight. Application of an anti-slip layer can effectively improve the result.

Table 4: Material efficiency (saturation) - power losses
MW 9.5x1 / N38

Steel thickness (mm) % power Real pull force (kg/lbs/g/N)
0.5 mm
10%
 0.04 kg / 0.09 lbs
40.0 g / 0.4 N
1 mm
25%
 0.10 kg / 0.22 lbs
100.0 g / 1.0 N
2 mm
50%
 0.20 kg / 0.44 lbs
200.0 g / 2.0 N
3 mm
75%
 0.30 kg / 0.66 lbs
300.0 g / 2.9 N
5 mm
100%
 0.40 kg / 0.88 lbs
400.0 g / 3.9 N
10 mm
100%
 0.40 kg / 0.88 lbs
400.0 g / 3.9 N
11 mm
100%
 0.40 kg / 0.88 lbs
400.0 g / 3.9 N
12 mm
100%
 0.40 kg / 0.88 lbs
400.0 g / 3.9 N
A thin sheet is unable to conduct the entire magnetic field, which weakens actual performance of the holder. If you install a neodymium to a too thin substrate, the field will pass right through and the pull force will drop sharply. To achieve full efficiency of this magnet's power, you need a suitably thick piece of metal. The saturation effect means that on sheet metal structures (e.g., thin profiles), the holder shows lower pull force. We advise picking the steel thickness based on the following data.

Table 5: Working in heat (material behavior) - thermal limit
MW 9.5x1 / N38

Ambient temp. (°C) Power loss Remaining pull (kg/lbs/g/N) Status
20 °C 0.0% 0.40 kg / 0.88 lbs
400.0 g / 3.9 N
 OK
40 °C -2.2% 0.39 kg / 0.86 lbs
391.2 g / 3.8 N
 OK
60 °C -4.4% 0.38 kg / 0.84 lbs
382.4 g / 3.8 N
80 °C -6.6% 0.37 kg / 0.82 lbs
373.6 g / 3.7 N
100 °C -28.8% 0.28 kg / 0.63 lbs
284.8 g / 2.8 N
Classic neodymiums lose power after exceeding the maximum temperature. Protect against heat – heat can permanently destroy this product. With every degree above norm, the neodymium's force briefly decreases. Avoid using this magnet close to heaters exceeding its operating temperature limit. Too high temperature will cause permanent loss of magnetism.
*Important note: Heat tolerance depends not only on the material grade, as well as the dimension ratios. Thin magnets (pancake types) risk losing magnetic properties sooner than taller cylinders. Warning indicator in the table points to permanent field degradation for this specific geometry.

Table 6: Two magnets (repulsion) - forces in the system
MW 9.5x1 / N38

Gap (mm) Attraction (kg/lbs) (N-S) Sliding Force (kg/lbs/g/N) Repulsion (kg/lbs) (N-N)
0 mm 0.71 kg / 1.57 lbs
2 403 Gs
0.11 kg / 0.24 lbs
107 g / 1.0 N
 N/A
1 mm 0.65 kg / 1.43 lbs
2 436 Gs
0.10 kg / 0.21 lbs
97 g / 1.0 N
 0.58 kg / 1.29 lbs
~0 Gs
2 mm 0.56 kg / 1.23 lbs
2 257 Gs
0.08 kg / 0.18 lbs
84 g / 0.8 N
 0.50 kg / 1.10 lbs
~0 Gs
3 mm 0.46 kg / 1.00 lbs
2 041 Gs
0.07 kg / 0.15 lbs
68 g / 0.7 N
 0.41 kg / 0.90 lbs
~0 Gs
5 mm 0.27 kg / 0.60 lbs
1 580 Gs
0.04 kg / 0.09 lbs
41 g / 0.4 N
 0.25 kg / 0.54 lbs
~0 Gs
10 mm 0.06 kg / 0.13 lbs
732 Gs
0.01 kg / 0.02 lbs
9 g / 0.1 N
 0.05 kg / 0.12 lbs
~0 Gs
20 mm 0.00 kg / 0.01 lbs
183 Gs
0.00 kg / 0.00 lbs
1 g / 0.0 N
 0.00 kg / 0.00 lbs
~0 Gs
50 mm 0.00 kg / 0.00 lbs
16 Gs
0.00 kg / 0.00 lbs
0 g / 0.0 N
 0.00 kg / 0.00 lbs
~0 Gs
60 mm 0.00 kg / 0.00 lbs
10 Gs
0.00 kg / 0.00 lbs
0 g / 0.0 N
 0.00 kg / 0.00 lbs
~0 Gs
70 mm 0.00 kg / 0.00 lbs
6 Gs
0.00 kg / 0.00 lbs
0 g / 0.0 N
 0.00 kg / 0.00 lbs
~0 Gs
80 mm 0.00 kg / 0.00 lbs
4 Gs
0.00 kg / 0.00 lbs
0 g / 0.0 N
 0.00 kg / 0.00 lbs
~0 Gs
90 mm 0.00 kg / 0.00 lbs
3 Gs
0.00 kg / 0.00 lbs
0 g / 0.0 N
 0.00 kg / 0.00 lbs
~0 Gs
100 mm 0.00 kg / 0.00 lbs
2 Gs
0.00 kg / 0.00 lbs
0 g / 0.0 N
 0.00 kg / 0.00 lbs
~0 Gs
Two magnets interact from a significantly greater distance than a magnet and sheet setup. Such a system of magnet-to-magnet creates a more powerful interaction and a wider radius of action. Want to build a powerful holder? Use a pair of magnets instead of a neodymium and a steel. Exercise caution that when attracting two neodymiums, the collision energy is massive. The repulsion force is marginally weaker than the connection force, but still impressive.
*The magnetic induction for N-N configuration drops to ~0 Gs at the midpoint between the magnets (caused by magnetic field nullification).
Attention: Results apply to shear force of two same magnets (friction ~0.15 for Ni-Ni plating).

Table 7: Hazards (electronics) - warnings
MW 9.5x1 / N38

Object / Device Limit (Gauss) / mT Safe distance
Pacemaker 5 Gs (0.5 mT) 3.0 cm
Hearing aid 10 Gs (1.0 mT) 2.5 cm
Timepiece 20 Gs (2.0 mT) 2.0 cm
Mobile device 40 Gs (4.0 mT) 1.5 cm
Car key 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
A strong magnetic field is a real danger to electronic devices and pacemakers. These magnets generate a flux that prevents correct functioning of sensitive medical devices. Remember: the unseen radiation acts through matter and glass. Exceptional care must be exercised by people with cochlear implants and insulin pumps. Influence will be felt by: mechanical watches, car keys, membranes, and screens. Do not place the magnet near cards, hard drives, or precise measuring instruments.

Table 8: Collisions (kinetic energy) - collision effects
MW 9.5x1 / N38

Start from (mm) Speed (km/h) Energy (J) Predicted outcome
10 mm 27.80 km/h
(7.72 m/s)
 0.02 J
30 mm 47.99 km/h
(13.33 m/s)
 0.05 J
50 mm 61.95 km/h
(17.21 m/s)
 0.08 J
100 mm 87.61 km/h
(24.34 m/s)
 0.16 J
NdFeB products are delicate – a violent impact against metal causes immediate chipping. Pay attention to connection velocity – a magnet released freely speeds with massive force. Kinetic force can cause material chips or painful pinches to skin. Be sure to control the product during installation so it doesn't slam with momentum against the metal. A collision at high speed means shattering of the magnet. Wear safety glasses when handling with large magnets.

Table 9: Anti-corrosion coating durability
MW 9.5x1 / 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. Note the thickness of the protective layer.

Table 10: Electrical data (Flux)
MW 9.5x1 / N38

Parameter Value SI Unit / Description
Magnetic Flux 1 184 Mx 11.8 µWb
Pc Coefficient 0.16 Low (Flat)
Total magnetic flux passing through the pole surface. Key data when building generators as well as sensors. The Pc coefficient defines the working geometry.

Table 11: Hydrostatics and buoyancy
MW 9.5x1 / N38

Environment Effective steel pull Effect
Air (land) 0.40 kg Standard
Water (riverbed) 0.46 kg
(+0.06 kg buoyancy gain)
+14.5%
Corrosion 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.
1. Shear force

*Note: On a vertical wall, the magnet retains only ~20% of its perpendicular strength.

2. Plate thickness effect

*Thin steel (e.g. 0.5mm PC case) drastically weakens the holding force.

3. Heat tolerance

*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) = 0.16

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
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: 010107-2026
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The presented product is an extremely powerful cylinder magnet, composed of durable NdFeB material, which, at dimensions of Ø9.5x1 mm, guarantees the highest energy density. This specific item features high dimensional repeatability and industrial build quality, making it a perfect solution for professional engineers and designers. As a magnetic rod with impressive force (approx. 0.40 kg), this product is available off-the-shelf from our warehouse in Poland, ensuring rapid order fulfillment. Additionally, 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 robotics, and broadly understood industry, serving as a fastening or actuating element. Thanks to the high power of 3.96 N with a weight of only 0.53 g, this rod is indispensable in miniature devices and wherever every gram matters.
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 long-term durability in automation, anaerobic resins 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 (Ø9.5x1), 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 9.5 mm and height 1 mm. The value of 3.96 N means that the magnet is capable of holding a weight many times exceeding its own mass of 0.53 g. The product has a [NiCuNi] coating, which secures it against oxidation, giving it an aesthetic, silvery shine.
This cylinder is magnetized axially (along the height of 1 mm), which means that the N and S poles are located on the flat, circular surfaces. Such an arrangement is most desirable 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.

Advantages and disadvantages of rare earth magnets.

Pros

Besides their remarkable pulling force, neodymium magnets offer the following advantages:
  • They have constant strength, and over nearly 10 years their performance decreases symbolically – ~1% (in testing),
  • They are extremely resistant to demagnetization induced by external magnetic fields,
  • Thanks to the smooth finish, the surface of Ni-Cu-Ni, gold, or silver gives an professional appearance,
  • Neodymium magnets generate maximum magnetic induction on a small area, which increases force concentration,
  • Thanks to resistance to high temperature, they are able to function (depending on the form) even at temperatures up to 230°C and higher...
  • Possibility of detailed modeling as well as optimizing to defined needs,
  • Significant place in future technologies – they are commonly used in data components, drive modules, medical equipment, and complex engineering applications.
  • Thanks to efficiency per cm³, small magnets offer high operating force, occupying minimum space,

Disadvantages

Characteristics of disadvantages of neodymium magnets and proposals for their use:
  • At very strong impacts they can break, therefore we recommend placing them in special holders. A metal housing provides additional protection against damage, as well as increases the magnet's 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. For applications outside, it is recommended to use protective magnets, such as those in rubber or plastics, which prevent oxidation and corrosion.
  • Due to limitations in creating threads and complex forms in magnets, we propose using cover - magnetic mount.
  • Possible danger to health – tiny shards of magnets are risky, in case of ingestion, which becomes key in the context of child safety. Additionally, tiny parts of these products are able to disrupt the diagnostic process medical in case of swallowing.
  • High unit price – neodymium magnets have a higher price than other types of magnets (e.g. ferrite), which can limit application in large quantities

Pull force analysis

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

The lifting capacity listed is a result of laboratory testing conducted under the following configuration:
  • with the use of a sheet made of special test steel, ensuring maximum field concentration
  • with a cross-section minimum 10 mm
  • characterized by smoothness
  • with total lack of distance (without paint)
  • during detachment in a direction vertical to the mounting surface
  • at temperature room level

Practical lifting capacity: influencing factors

It is worth knowing that the application force may be lower subject to elements below, in order of importance:
  • Gap between magnet and steel – even a fraction of a millimeter of distance (caused e.g. by varnish or dirt) significantly weakens the magnet efficiency, often by half at just 0.5 mm.
  • Direction of force – maximum parameter is obtained only during pulling at a 90° angle. The resistance to sliding of the magnet along the surface is usually many times lower (approx. 1/5 of the lifting capacity).
  • Plate thickness – too thin steel does not accept the full field, causing part of the power to be escaped into the air.
  • Steel type – mild steel gives the best results. Higher carbon content reduce magnetic permeability and lifting capacity.
  • Surface finish – ideal contact is possible only on polished steel. Any scratches and bumps reduce the real contact area, reducing force.
  • Heat – NdFeB sinters have a sensitivity to temperature. When it is hot they are weaker, and in frost gain strength (up to a certain limit).

Lifting capacity testing was carried out on a smooth plate of optimal thickness, under perpendicular forces, however under attempts to slide the magnet the lifting capacity is smaller. In addition, even a small distance between the magnet and the plate reduces the load capacity.

H&S for magnets
Fragile material

Despite the nickel coating, neodymium is brittle and cannot withstand shocks. Do not hit, as the magnet may shatter into sharp, dangerous pieces.

Physical harm

Big blocks can smash fingers in a fraction of a second. Never put your hand betwixt two strong magnets.

Allergic reactions

Warning for allergy sufferers: The nickel-copper-nickel coating contains nickel. If skin irritation happens, immediately stop working with magnets and use protective gear.

Precision electronics

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

Machining danger

Mechanical processing of NdFeB material carries a risk of fire hazard. Neodymium dust reacts violently with oxygen and is difficult to extinguish.

Medical implants

Life threat: Neodymium magnets can deactivate heart devices and defibrillators. Do not approach if you have medical devices.

Maximum temperature

Monitor thermal conditions. Exposing the magnet above 80 degrees Celsius will ruin its magnetic structure and strength.

Threat to electronics

Powerful magnetic fields can erase data on payment cards, hard drives, and other magnetic media. Keep a distance of at least 10 cm.

Safe operation

Before use, read the rules. Uncontrolled attraction can destroy the magnet or injure your hand. Think ahead.

Do not give to children

Product intended for adults. Small elements can be swallowed, leading to serious injuries. Store away from children and animals.

Safety First! Looking for details? Read our article: Why are neodymium magnets dangerous?