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neodymium magnets

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MW 10x10 / N38 - cylindrical magnet

cylindrical magnet

Catalog no 010004

GTIN: 5906301810032

5.00

Diameter Ø

10 mm [±0,1 mm]

Height

10 mm [±0,1 mm]

Weight

5.89 g

Magnetization Direction

↑ axial

Load capacity

3.18 kg / 31.15 N

Magnetic Induction

553.84 mT / 5538 Gs

Coating

[NiCuNi] Nickel

4.31 with VAT / pcs + price for transport

3.50 ZŁ net + 23% VAT / pcs

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MW 10x10 / N38 - cylindrical magnet

Specification / characteristics MW 10x10 / N38 - cylindrical magnet

properties
properties values
Cat. no. 010004
GTIN 5906301810032
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 10 mm [±0,1 mm]
Height 10 mm [±0,1 mm]
Weight 5.89 g
Magnetization Direction ↑ axial
Load capacity ~ ? 3.18 kg / 31.15 N
Magnetic Induction ~ ? 553.84 mT / 5538 Gs
Coating [NiCuNi] Nickel
Manufacturing Tolerance ±0.1 mm

Magnetic properties of material N38

Specification / characteristics MW 10x10 / 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

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

Technical modeling of the magnet - report

These values are the outcome of a physical analysis. Values are based on models for the class NdFeB. Actual conditions may differ. Treat these calculations as a preliminary roadmap for designers.

Table 1: Static force (pull vs gap) - interaction chart
MW 10x10 / N38
Distance (mm) Induction (Gauss) / mT Pull Force (kg) Risk Status
0 mm 5534 Gs
553.4 mT
3.18 kg / 3180.0 g
31.2 N
strong
1 mm 4428 Gs
442.8 mT
2.04 kg / 2036.1 g
20.0 N
strong
2 mm 3420 Gs
342.0 mT
1.21 kg / 1214.8 g
11.9 N
low risk
3 mm 2597 Gs
259.7 mT
0.70 kg / 700.2 g
6.9 N
low risk
5 mm 1498 Gs
149.8 mT
0.23 kg / 232.9 g
2.3 N
low risk
10 mm 469 Gs
46.9 mT
0.02 kg / 22.9 g
0.2 N
low risk
15 mm 198 Gs
19.8 mT
0.00 kg / 4.1 g
0.0 N
low risk
20 mm 101 Gs
10.1 mT
0.00 kg / 1.1 g
0.0 N
low risk
30 mm 36 Gs
3.6 mT
0.00 kg / 0.1 g
0.0 N
low risk
50 mm 9 Gs
0.9 mT
0.00 kg / 0.0 g
0.0 N
low risk
Table 2: Vertical Load (Wall)
MW 10x10 / N38
Distance (mm) Friction coefficient Pull Force (kg)
0 mm Stal (~0.2) 0.64 kg / 636.0 g
6.2 N
1 mm Stal (~0.2) 0.41 kg / 408.0 g
4.0 N
2 mm Stal (~0.2) 0.24 kg / 242.0 g
2.4 N
3 mm Stal (~0.2) 0.14 kg / 140.0 g
1.4 N
5 mm Stal (~0.2) 0.05 kg / 46.0 g
0.5 N
10 mm Stal (~0.2) 0.00 kg / 4.0 g
0.0 N
15 mm Stal (~0.2) 0.00 kg / 0.0 g
0.0 N
20 mm Stal (~0.2) 0.00 kg / 0.0 g
0.0 N
30 mm Stal (~0.2) 0.00 kg / 0.0 g
0.0 N
50 mm Stal (~0.2) 0.00 kg / 0.0 g
0.0 N
Table 3: Wall mounting (shearing) - behavior on slippery surfaces
MW 10x10 / N38
Surface type Friction coefficient / % Mocy Max load (kg)
Raw steel
µ = 0.3 30% Nominalnej Siły
0.95 kg / 954.0 g
9.4 N
Painted steel (standard)
µ = 0.2 20% Nominalnej Siły
0.64 kg / 636.0 g
6.2 N
Oily/slippery steel
µ = 0.1 10% Nominalnej Siły
0.32 kg / 318.0 g
3.1 N
Magnet with anti-slip rubber
µ = 0.5 50% Nominalnej Siły
1.59 kg / 1590.0 g
15.6 N
Table 4: Steel thickness (substrate influence) - sheet metal selection
MW 10x10 / N38
Steel thickness (mm) % power Real pull force (kg)
0.5 mm
10%
0.32 kg / 318.0 g
3.1 N
1 mm
25%
0.80 kg / 795.0 g
7.8 N
2 mm
50%
1.59 kg / 1590.0 g
15.6 N
5 mm
100%
3.18 kg / 3180.0 g
31.2 N
10 mm
100%
3.18 kg / 3180.0 g
31.2 N
Table 5: Thermal stability (stability) - resistance threshold
MW 10x10 / N38
Ambient temp. (°C) Power loss Remaining pull Status
20 °C 0.0% 3.18 kg / 3180.0 g
31.2 N
OK
40 °C -2.2% 3.11 kg / 3110.0 g
30.5 N
OK
60 °C -4.4% 3.04 kg / 3040.1 g
29.8 N
OK
80 °C -6.6% 2.97 kg / 2970.1 g
29.1 N
100 °C -28.8% 2.26 kg / 2264.2 g
22.2 N
Table 6: Magnet-Magnet interaction (attraction) - forces in the system
MW 10x10 / N38
Gap (mm) Attraction (kg) (N-S) Repulsion (kg) (N-N)
0 mm 14.83 kg / 14830 g
145.5 N
6 003 Gs
N/A
1 mm 12.01 kg / 12012 g
117.8 N
9 962 Gs
10.81 kg / 10811 g
106.1 N
~0 Gs
2 mm 9.50 kg / 9495 g
93.1 N
8 857 Gs
8.55 kg / 8546 g
83.8 N
~0 Gs
3 mm 7.38 kg / 7381 g
72.4 N
7 809 Gs
6.64 kg / 6643 g
65.2 N
~0 Gs
5 mm 4.31 kg / 4311 g
42.3 N
5 968 Gs
3.88 kg / 3880 g
38.1 N
~0 Gs
10 mm 1.09 kg / 1086 g
10.7 N
2 996 Gs
0.98 kg / 978 g
9.6 N
~0 Gs
20 mm 0.11 kg / 107 g
1.0 N
939 Gs
0.10 kg / 96 g
0.9 N
~0 Gs
50 mm 0.00 kg / 2 g
0.0 N
116 Gs
0.00 kg / 0 g
0.0 N
~0 Gs
Table 7: Protective zones (implants) - precautionary measures
MW 10x10 / N38
Object / Device Limit (Gauss) / mT Safe distance
Pacemaker 5 Gs (0.5 mT) 6.5 cm
Hearing aid 10 Gs (1.0 mT) 5.0 cm
Timepiece 20 Gs (2.0 mT) 4.0 cm
Mobile device 40 Gs (4.0 mT) 3.0 cm
Remote 50 Gs (5.0 mT) 3.0 cm
Payment card 400 Gs (40.0 mT) 1.5 cm
HDD hard drive 600 Gs (60.0 mT) 1.0 cm
Table 8: Dynamics (kinetic energy) - collision effects
MW 10x10 / N38
Start from (mm) Speed (km/h) Energy (J) Predicted outcome
10 mm 23.54 km/h
(6.54 m/s)
0.13 J
30 mm 40.59 km/h
(11.27 m/s)
0.37 J
50 mm 52.40 km/h
(14.56 m/s)
0.62 J
100 mm 74.10 km/h
(20.58 m/s)
1.25 J
Table 9: Anti-corrosion coating durability
MW 10x10 / 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)
Table 10: Electrical data (Pc)
MW 10x10 / N38
Parameter Value Jedn. SI / Opis
Strumień (Flux) 4 481 Mx 44.8 µWb
Współczynnik Pc 0.89 Wysoki (Stabilny)
Table 11: Underwater work (magnet fishing)
MW 10x10 / N38
Environment Effective steel pull Effect
Air (land) 3.18 kg Standard
Water (riverbed) 3.64 kg
(+0.46 kg Buoyancy gain)
+14.5%
Corrosion warning: Standard nickel requires drying after every contact with moisture; lack of maintenance will lead to rust spots.
1. Montaż na Ścianie (Ześlizg)

*Uwaga: Na pionowej ścianie magnes utrzyma tylko ok. 20-30% tego co na suficie.

2. Wpływ Grubości Blachy

*Cienka blacha (np. obudowa PC 0.5mm) drastycznie osłabia magnes.

3. Wytrzymałość Temperaturowa

*Dla materiału N38 granica bezpieczeństwa to 80°C.

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Trzymaj z dala od dysków HDD, kart płatniczych i telefonów.

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Osoby z rozrusznikiem muszą zachować dystans min. 10 cm.

Nie dla dzieci

Ryzyko połknięcia. Połknięcie dwóch magnesów grozi śmiercią.

Kruchy materiał

Magnes to ceramika! Uderzenie o inny magnes spowoduje odpryski.

Do czego użyć tego magnesu?

Sprawdzone zastosowania dla wymiaru 15x10x2 mm

Elektronika i Czujniki

Idealny jako element wyzwalający dla czujników Halla oraz kontaktronów w systemach alarmowych. Płaski kształt (2mm) pozwala na ukrycie go w wąskich szczelinach obudowy.

Modelarstwo i Druk 3D

Stosowany do tworzenia niewidocznych zamknięć w modelach drukowanych 3D. Można go wprasować w wydruk lub wkleić w kieszeń zaprojektowaną w modelu CAD.

Meble i Fronty

Używany jako "domykacz" lekkich drzwiczek szafkowych, gdzie standardowe magnesy meblowe są za grube. Wymaga wklejenia w płytkie podfrezowanie.

Other proposals

The offered product is an exceptionally strong rod magnet, composed of modern NdFeB material, which, with dimensions of Ø10x10 mm, guarantees the highest energy density. The MW 10x10 / N38 component is characterized by high dimensional repeatability and professional build quality, making it an excellent solution for professional engineers and designers. As a magnetic rod with significant force (approx. 3.18 kg), this product is in stock from our European logistics center, ensuring lightning-fast order fulfillment. Additionally, its triple-layer Ni-Cu-Ni coating secures it against corrosion in standard operating conditions, ensuring an aesthetic appearance and durability for years.
It finds application in DIY projects, advanced automation, and broadly understood industry, serving as a positioning or actuating element. Thanks to the high power of 31.15 N with a weight of only 5.89 g, this rod is indispensable in miniature devices 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., 10.1 mm) using epoxy glues. To ensure long-term durability in industry, anaerobic resins are used, which do not react with the nickel coating and fill the gap, guaranteeing high repeatability of the connection.
Magnets N38 are strong enough for 90% of applications in modeling and machine building, where excessive miniaturization with maximum force is not required. If you need even stronger magnets in the same volume (Ø10x10), contact us regarding higher grades (e.g., N50, N52), however, N38 is the standard available off-the-shelf in our store.
This model is characterized by dimensions Ø10x10 mm, which, at a weight of 5.89 g, makes it an element with high magnetic energy density. The key parameter here is the holding force amounting to approximately 3.18 kg (force ~31.15 N), which, with such defined dimensions, proves the high grade of the NdFeB material. The product has a [NiCuNi] coating, which protects the surface against oxidation, 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 10 mm. Such an arrangement is standard 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 through the diameter if your project requires it.

Pros as well as cons of NdFeB magnets.

Besides their stability, neodymium magnets are valued for these benefits:

  • They retain full power for nearly 10 years – the loss is just ~1% (according to analyses),
  • Neodymium magnets are distinguished by exceptionally resistant to demagnetization caused by external interference,
  • A magnet with a metallic silver surface is more attractive,
  • They are known for high magnetic induction at the operating surface, which improves attraction properties,
  • Through (adequate) combination of ingredients, they can achieve high thermal resistance, enabling action at temperatures reaching 230°C and above...
  • Possibility of accurate forming as well as modifying to concrete requirements,
  • Huge importance in advanced technology sectors – they are used in hard drives, electric drive systems, medical equipment, and multitasking production systems.
  • Relatively small size with high pulling force – neodymium magnets offer impressive pulling force in small dimensions, which allows their use in compact constructions

Disadvantages of neodymium magnets:

  • They are fragile upon heavy impacts. To avoid cracks, it is worth protecting magnets in a protective case. Such protection not only protects the magnet but also improves its resistance to damage
  • When exposed to high temperature, neodymium magnets experience a drop in force. Often, when the temperature exceeds 80°C, their power decreases (depending on the size and shape of the magnet). For those who need magnets for extreme conditions, we offer [AH] versions withstanding up to 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 magnets in rubber or plastics, which secure oxidation and corrosion.
  • We recommend casing - magnetic mount, due to difficulties in creating threads inside the magnet and complicated forms.
  • Possible danger resulting from small fragments of magnets pose a threat, if swallowed, which gains importance in the context of child safety. Furthermore, small components of these magnets are able to be problematic in diagnostics medical after entering the body.
  • High unit price – neodymium magnets are more expensive than other types of magnets (e.g. ferrite), which increases costs of application in large quantities

Maximum magnetic pulling forcewhat affects it?

The declared magnet strength represents the peak performance, measured under laboratory conditions, namely:

  • on a plate made of mild steel, perfectly concentrating the magnetic flux
  • whose transverse dimension equals approx. 10 mm
  • characterized by smoothness
  • with direct contact (no impurities)
  • during pulling in a direction vertical to the plane
  • at room temperature

What influences lifting capacity in practice

Holding efficiency impacted by specific conditions, such as (from most important):

  • Air gap (between the magnet and the plate), as even a very small distance (e.g. 0.5 mm) leads to a decrease in force by up to 50% (this also applies to varnish, corrosion or debris).
  • Force direction – catalog parameter refers to detachment vertically. When slipping, the magnet holds much less (often approx. 20-30% of nominal force).
  • Plate thickness – too thin steel does not accept the full field, causing part of the flux to be escaped to the other side.
  • Metal type – different alloys reacts the same. High carbon content weaken the interaction with the magnet.
  • Smoothness – ideal contact is obtained only on polished steel. Rough texture reduce the real contact area, reducing force.
  • Thermal environment – temperature increase causes a temporary drop of force. Check the thermal limit for a given model.

* Holding force was tested on a smooth steel plate of 20 mm thickness, when the force acted perpendicularly, however under attempts to slide the magnet the load capacity is reduced by as much as fivefold. In addition, even a minimal clearance {between} the magnet and the plate reduces the load capacity.

Pros as well as cons of NdFeB magnets.

Besides their stability, neodymium magnets are valued for these benefits:

  • They retain full power for nearly 10 years – the loss is just ~1% (according to analyses),
  • Neodymium magnets are distinguished by exceptionally resistant to demagnetization caused by external interference,
  • A magnet with a metallic silver surface is more attractive,
  • They are known for high magnetic induction at the operating surface, which improves attraction properties,
  • Through (adequate) combination of ingredients, they can achieve high thermal resistance, enabling action at temperatures reaching 230°C and above...
  • Possibility of accurate forming as well as modifying to concrete requirements,
  • Huge importance in advanced technology sectors – they are used in hard drives, electric drive systems, medical equipment, and multitasking production systems.
  • Relatively small size with high pulling force – neodymium magnets offer impressive pulling force in small dimensions, which allows their use in compact constructions

Disadvantages of neodymium magnets:

  • They are fragile upon heavy impacts. To avoid cracks, it is worth protecting magnets in a protective case. Such protection not only protects the magnet but also improves its resistance to damage
  • When exposed to high temperature, neodymium magnets experience a drop in force. Often, when the temperature exceeds 80°C, their power decreases (depending on the size and shape of the magnet). For those who need magnets for extreme conditions, we offer [AH] versions withstanding up to 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 magnets in rubber or plastics, which secure oxidation and corrosion.
  • We recommend casing - magnetic mount, due to difficulties in creating threads inside the magnet and complicated forms.
  • Possible danger resulting from small fragments of magnets pose a threat, if swallowed, which gains importance in the context of child safety. Furthermore, small components of these magnets are able to be problematic in diagnostics medical after entering the body.
  • High unit price – neodymium magnets are more expensive than other types of magnets (e.g. ferrite), which increases costs of application in large quantities

Maximum magnetic pulling forcewhat affects it?

The declared magnet strength represents the peak performance, measured under laboratory conditions, namely:

  • on a plate made of mild steel, perfectly concentrating the magnetic flux
  • whose transverse dimension equals approx. 10 mm
  • characterized by smoothness
  • with direct contact (no impurities)
  • during pulling in a direction vertical to the plane
  • at room temperature

What influences lifting capacity in practice

Holding efficiency impacted by specific conditions, such as (from most important):

  • Air gap (between the magnet and the plate), as even a very small distance (e.g. 0.5 mm) leads to a decrease in force by up to 50% (this also applies to varnish, corrosion or debris).
  • Force direction – catalog parameter refers to detachment vertically. When slipping, the magnet holds much less (often approx. 20-30% of nominal force).
  • Plate thickness – too thin steel does not accept the full field, causing part of the flux to be escaped to the other side.
  • Metal type – different alloys reacts the same. High carbon content weaken the interaction with the magnet.
  • Smoothness – ideal contact is obtained only on polished steel. Rough texture reduce the real contact area, reducing force.
  • Thermal environment – temperature increase causes a temporary drop of force. Check the thermal limit for a given model.

* Holding force was tested on a smooth steel plate of 20 mm thickness, when the force acted perpendicularly, however under attempts to slide the magnet the load capacity is reduced by as much as fivefold. In addition, even a minimal clearance {between} the magnet and the plate reduces the load capacity.

H&S for magnets

Keep away from computers

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

Do not overheat magnets

Do not overheat. Neodymium magnets are susceptible to temperature. If you require resistance above 80°C, inquire about HT versions (H, SH, UH).

Conscious usage

Handle with care. Rare earth magnets attract from a long distance and snap with huge force, often faster than you can react.

Warning for heart patients

Patients with a pacemaker should keep an safe separation from magnets. The magnetic field can stop the operation of the life-saving device.

Protective goggles

NdFeB magnets are ceramic materials, which means they are fragile like glass. Clashing of two magnets leads to them shattering into small pieces.

Do not drill into magnets

Powder created during machining of magnets is flammable. Do not drill into magnets without proper cooling and knowledge.

Swallowing risk

Only for adults. Small elements pose a choking risk, causing intestinal necrosis. Keep away from kids and pets.

Pinching danger

Protect your hands. Two powerful magnets will join instantly with a force of massive weight, destroying anything in their path. Exercise extreme caution!

Nickel allergy

Allergy Notice: The nickel-copper-nickel coating consists of nickel. If redness happens, immediately stop handling magnets and wear gloves.

Compass and GPS

An intense magnetic field disrupts the operation of compasses in phones and GPS navigation. Keep magnets close to a smartphone to avoid breaking the sensors.

Danger!

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

Dhit sp. z o.o.

e-mail: bok@dhit.pl

tel: +48 888 99 98 98