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MW 9.5x1 / N38 - cylindrical magnet

cylindrical magnet

Catalog no 010107

GTIN/EAN: 5906301811060

5.00
Load capacity 0.40 kg / 3.96 N Magnetic Induction 127.68 mT / 1277 Gs
Diameter Ø
9.5 mm [±0,1 mm]
Height
1 mm [±0,1 mm]
Weight
0.53 g
Magnetization Direction
↑ axial
Coating
[NiCuNi] Nickel
view specifications »

0.295 zł with VAT / pcs + price for transport

0.240 zł net + 23% VAT / pcs

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Engineering report for this magnet

Full PDF analysis: pull and shear force, effect of distance, temperature and plate thickness, safety distances and the demagnetization curve.

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Technical of the product - 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

Technical simulation of the product - report

Presented information are the outcome of a mathematical calculation. Values rely on models for the material Nd2Fe14B. Real-world conditions might slightly differ. Please consider these calculations as a preliminary roadmap when designing systems.

Table 1: Static pull force (pull vs distance) - 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
Pulling power decreases significantly with every mm of gap. Keep in mind that every additional insulation layer (e.g., dirt, varnish, veneer) significantly reduces the pull force. Magnets hold strongest at the point of direct contact; distance drastically cuts the force. Notice how rapidly the pull force plummet, when the product does not touch flatly to the metal substrate. When designing the mounting, avoid redundant distances.

Table 2: Vertical hold (vertical surface)
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 following data shows the estimated weight limit sufficient to start the downward movement of the magnet vertically along a vertical metal surface (considering standard friction). The holding force varies with the air gap between the magnet and the metal.

Table 3: Vertical assembly (sliding) - vertical pull
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 hanging a holder on a vertical wall (e.g., a board), it will only hold only about 20%-30% of its nominal power. Gravity as well as a weak degree of grip cause that holders slide down easier than they pop off the substrate. Planning a vertical fastening? Remember that the sliding force is noticeably lower than the maximum static pull force. On a smooth steel, the holder will slide down under a significantly smaller load. Utilizing a rubberized layer can effectively improve the result.

Table 4: Material efficiency (substrate influence) - sheet metal selection
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 too thin steel is unable to conduct the full magnetic flux, which weakens actual performance of the magnet. If you mount a strong magnet to a too thin substrate, the flux will penetrate right through and the holding will be smaller. To squeeze the maximum of this magnet's power, you require a sufficiently solid backing of steel. The saturation effect means that on sheet metal structures (e.g., car bodies), the holder shows lower pull force. We suggest choosing the steel dimension based on the following data.

Table 5: Thermal resistance (material behavior) - resistance threshold
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
Ordinary NdFeB products lose parameters above the temperature limit. Protect against heat – heat can irreversibly destroy this magnet. As the temperature rises, the neodymium's force briefly decreases. Do not use this magnet close to ovens higher than its working range. Too high temperature will result in irreversible degradation of magnetism.
*Important note: Temperature resistance depends not only on the material grade, and the Permeance Coefficient Pc. Thin magnets (low permeance coefficient) are more susceptible to demagnetization sooner than taller cylinders. Warning indicator in the table points to a risk of irreversible loss for this particular item.

Table 6: Magnet-Magnet interaction (attraction) - field collision
MW 9.5x1 / N38

Gap (mm) Attraction (kg/lbs) (N-S) Lateral 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 magnetic products attract each other from a significantly greater distance than a magnet and sheet setup. The setup of magnet-to-magnet produces a massive flux and a larger range of performance. Want to build a powerful holder? Use a pair of magnets instead of one magnet and a steel. Be careful that when bringing together two magnets, the pinch force is extreme. The repulsion force is slightly lower than the attraction, but still significant.
*The magnetic induction in repulsion mode is approximately ~0 Gs at the geometric center between the magnets (due to field cancellation).
* Figures apply to friction force of two matching neodymium magnets (friction ~0.15 for Ni-Ni layer).

Table 7: Hazards (implants) - precautionary measures
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
Mechanical watch 20 Gs (2.0 mT) 2.0 cm
Mobile device 40 Gs (4.0 mT) 1.5 cm
Remote 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
Powerful magnet radiation poses a serious hazard to electronics as well as pacemakers. These NdFeB products generate a field that destroys function of digital equipment. Be aware: the invisible magnetic field acts through matter and housings. Exceptional care must be exercised by people with hearing aids and insulin pumps. Also at risk are: automatic timepieces, car keys, speakers, and displays. Do not bring the product near payment cards, hard drives, or sensitive navigation tools.

Table 8: Impact energy (cracking risk) - collision effects
MW 9.5x1 / N38

Start from (mm) Speed (km/h) Energy (J) Predicted outcome
10 mm 21.42 km/h
(5.95 m/s)
 0.01 J
30 mm 21.48 km/h
(5.97 m/s)
 0.01 J
50 mm 21.48 km/h
(5.97 m/s)
 0.01 J
100 mm 21.48 km/h
(5.97 m/s)
 0.01 J
Neodymium magnets are delicate – a violent impact against metal can result in shattering. Pay attention to connection velocity – a magnet released freely becomes dangerous. Kinetic force can trigger coating fragments or injury to fingers. Hold the magnet firmly during installation so it doesn't hit with great force against the metal. A collision at high speed ends with a crack of the neodymium. Wear safety glasses when playing with large magnets.

Table 9: Surface protection spec
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)
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: Electrical data (Pc)
MW 9.5x1 / N38

Parameter Value SI Unit / Description
Magnetic Flux 1 184 Mx 11.8 µWb
Pc Coefficient 0.16 Low (Flat)
Flux value passing through the magnet pole. Essential parameter for generator designers and motors. Pc value defines the magnet's operating point.

Table 11: Submerged application
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%
Warning: Remember to wipe the magnet thoroughly after removing it from water and apply a protective layer (e.g., oil) to avoid corrosion.
Water displaces steel, making heavy objects slightly lighter. Note: for permanent underwater work, we recommend magnets with an anti-corrosive (epoxy) coating.

1. Wall mount (shear)

*Note: On a vertical surface, the magnet holds merely approx. 20-30% of its max power.

2. Efficiency vs thickness

*Thin steel (e.g. computer case) significantly reduces the holding force.

3. Thermal stability

*For N38 grade, the critical limit is 80°C.

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

chart generated for the permeance coefficient Pc (Permeance Coefficient) = 0.16

This simulation demonstrates the magnetic stability of the selected magnet under specific geometric conditions. 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

Material specification

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: 010107-2026
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The offered product is an exceptionally strong cylindrical magnet, produced from advanced NdFeB material, which, with dimensions of Ø9.5x1 mm, guarantees optimal power. This specific item boasts high dimensional repeatability and professional build quality, making it an ideal solution for the most demanding engineers and designers. As a cylindrical magnet with impressive force (approx. 0.40 kg), this product is in stock from our European logistics center, ensuring quick 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 DIY projects, advanced robotics, and broadly understood industry, serving as a positioning or actuating element. Thanks to the pull force 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 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.
Grade N38 is the most popular standard for industrial neodymium magnets, offering a great economic balance and operational stability. If you need even stronger magnets in the same volume (Ø9.5x1), 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 Ø9.5x1 mm, which, at a weight of 0.53 g, makes it an element with high magnetic energy density. 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 protects the surface against oxidation, giving it an aesthetic, silvery shine.
This rod magnet is magnetized axially (along the height of 1 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 and weaknesses of rare earth magnets.

Advantages

Besides their remarkable pulling force, neodymium magnets offer the following advantages:
  • They do not lose strength, even over approximately ten years – the drop in lifting capacity is only ~1% (theoretically),
  • They do not lose their magnetic properties even under strong external field,
  • The use of an elegant coating of noble metals (nickel, gold, silver) causes the element to present itself better,
  • Magnets are characterized by maximum magnetic induction on the working surface,
  • Neodymium magnets are characterized by extremely high magnetic induction on the magnet surface and can work (depending on the shape) even at a temperature of 230°C or more...
  • Possibility of detailed modeling and adapting to complex requirements,
  • Versatile presence in modern industrial fields – they serve a role in computer drives, electromotive mechanisms, diagnostic systems, also complex engineering applications.
  • Compactness – despite small sizes they offer powerful magnetic field, making them ideal for precision applications

Disadvantages

What to avoid - cons of neodymium magnets: weaknesses and usage proposals
  • They are prone to damage upon too strong impacts. To avoid cracks, it is worth protecting magnets in a protective case. Such protection not only shields the magnet but also improves its resistance to damage
  • We warn that neodymium magnets can reduce their strength at high temperatures. To prevent this, we recommend our specialized [AH] magnets, which work effectively even at 230°C.
  • Magnets exposed to a humid environment can corrode. Therefore while using outdoors, we recommend using waterproof magnets made of rubber, plastic or other material resistant to moisture
  • We recommend cover - magnetic mount, due to difficulties in realizing threads inside the magnet and complicated shapes.
  • Potential hazard resulting from small fragments of magnets can be dangerous, if swallowed, which is particularly important in the aspect of protecting the youngest. It is also worth noting that small components of these products can complicate diagnosis medical after entering the body.
  • With mass production the cost of neodymium magnets can be a barrier,

Holding force characteristics

Magnetic strength at its maximum – what it depends on?

The force parameter is a theoretical maximum value conducted under standard conditions:
  • on a plate made of structural steel, optimally conducting the magnetic flux
  • possessing a thickness of min. 10 mm to avoid saturation
  • with an ideally smooth touching surface
  • under conditions of no distance (metal-to-metal)
  • during detachment in a direction vertical to the plane
  • in stable room temperature

Magnet lifting force in use – key factors

Real force is affected by working environment parameters, such as (from most important):
  • Gap between magnet and steel – every millimeter of separation (caused e.g. by veneer or unevenness) drastically reduces the magnet efficiency, often by half at just 0.5 mm.
  • Angle of force application – maximum parameter is available only during pulling at a 90° angle. The shear force of the magnet along the surface is usually many times lower (approx. 1/5 of the lifting capacity).
  • Wall thickness – the thinner the sheet, the weaker the hold. Part of the magnetic field passes through the material instead of generating force.
  • Material composition – different alloys attracts identically. Alloy additives weaken the attraction effect.
  • Surface finish – full contact is possible only on polished steel. Any scratches and bumps create air cushions, weakening the magnet.
  • Temperature – temperature increase results in weakening of force. Check the thermal limit for a given model.

Lifting capacity was measured by applying a polished steel plate of optimal thickness (min. 20 mm), under perpendicular detachment force, whereas under parallel forces the holding force is lower. Moreover, even a small distance between the magnet’s surface and the plate reduces the lifting capacity.

H&S for magnets
Dust explosion hazard

Machining of neodymium magnets carries a risk of fire risk. Magnetic powder reacts violently with oxygen and is difficult to extinguish.

Handling rules

Before starting, check safety instructions. Sudden snapping can destroy the magnet or hurt your hand. Be predictive.

Physical harm

Large magnets can crush fingers instantly. Never place your hand betwixt two attracting surfaces.

Demagnetization risk

Regular neodymium magnets (N-type) lose magnetization when the temperature exceeds 80°C. This process is irreversible.

Risk of cracking

Despite the nickel coating, the material is brittle and not impact-resistant. Do not hit, as the magnet may shatter into sharp, dangerous pieces.

Electronic hazard

Very strong magnetic fields can erase data on credit cards, HDDs, and other magnetic media. Keep a distance of min. 10 cm.

Nickel coating and allergies

Warning for allergy sufferers: The Ni-Cu-Ni coating contains nickel. If redness occurs, immediately stop handling magnets and use protective gear.

Pacemakers

Medical warning: Strong magnets can turn off heart devices and defibrillators. Stay away if you have electronic implants.

Phone sensors

A strong magnetic field negatively affects the functioning of magnetometers in phones and GPS navigation. Maintain magnets near a device to avoid damaging the sensors.

Product not for children

NdFeB magnets are not intended for children. Eating several magnets can lead to them attracting across intestines, which poses a critical condition and requires urgent medical intervention.

Safety First! Want to know more? Check our post: Why are neodymium magnets dangerous?