MW 10x10 / N38 - cylindrical magnet
cylindrical magnet
Catalog no 010004
GTIN: 5906301810032
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 ZŁ 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 | values |
|---|---|
| Cat. no. | 010004 |
| GTIN | 5906301810032 |
| Production/Distribution | Dhit sp. z o.o. |
| 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
| 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
| 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.
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 |
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
|
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
|
MW 10x10 / N38
| Steel thickness (mm) | % power | Real pull force (kg) |
|---|---|---|
| 0.5 mm |
|
0.32 kg / 318.0 g
3.1 N
|
| 1 mm |
|
0.80 kg / 795.0 g
7.8 N
|
| 2 mm |
|
1.59 kg / 1590.0 g
15.6 N
|
| 5 mm |
|
3.18 kg / 3180.0 g
31.2 N
|
| 10 mm |
|
3.18 kg / 3180.0 g
31.2 N
|
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
|
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
|
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 |
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 |
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) |
MW 10x10 / N38
| Parameter | Value | Jedn. SI / Opis |
|---|---|---|
| Strumień (Flux) | 4 481 Mx | 44.8 µWb |
| Współczynnik Pc | 0.89 | Wysoki (Stabilny) |
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% |
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.
Jak rozdzielać?
Nie próbuj odrywać magnesów siłą!
Zawsze zsuwaj je na bok krawędzi stołu.
Elektronika
Trzymaj z dala od dysków HDD, kart płatniczych i telefonów.
Rozruszniki Serca
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
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 force – what 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 force – what 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?
