MW 10x2 / N38 - cylindrical magnet
cylindrical magnet
Catalog no 010006
GTIN/EAN: 5906301810056
Diameter Ø
10 mm [±0,1 mm]
Height
2 mm [±0,1 mm]
Weight
1.18 g
Magnetization Direction
↑ axial
Load capacity
1.27 kg / 12.50 N
Magnetic Induction
230.11 mT / 2301 Gs
Coating
[NiCuNi] Nickel
0.467 ZŁ with VAT / pcs + price for transport
0.380 ZŁ net + 23% VAT / pcs
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Product card - MW 10x2 / N38 - cylindrical magnet
Specification / characteristics - MW 10x2 / N38 - cylindrical magnet
| properties | values |
|---|---|
| Cat. no. | 010006 |
| GTIN/EAN | 5906301810056 |
| Production/Distribution | Dhit sp. z o.o. |
| Country of origin | Poland / China / Germany |
| Customs code | 85059029 |
| Diameter Ø | 10 mm [±0,1 mm] |
| Height | 2 mm [±0,1 mm] |
| Weight | 1.18 g |
| Magnetization Direction | ↑ axial |
| Load capacity ~ ? | 1.27 kg / 12.50 N |
| Magnetic Induction ~ ? | 230.11 mT / 2301 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 | 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
| 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 - technical parameters
These values are the result of a engineering calculation. Results rely on models for the class Nd2Fe14B. Operational conditions may deviate from the simulation results. Use these data as a preliminary roadmap for designers.
Table 1: Static force (pull vs gap) - power drop
MW 10x2 / N38
| Distance (mm) | Induction (Gauss) / mT | Pull Force (kg/lbs/g/N) | Risk Status |
|---|---|---|---|
| 0 mm |
2300 Gs
230.0 mT
|
1.27 kg / 2.80 LBS
1270.0 g / 12.5 N
|
weak grip |
| 1 mm |
1974 Gs
197.4 mT
|
0.94 kg / 2.06 LBS
935.3 g / 9.2 N
|
weak grip |
| 2 mm |
1570 Gs
157.0 mT
|
0.59 kg / 1.31 LBS
592.1 g / 5.8 N
|
weak grip |
| 3 mm |
1194 Gs
119.4 mT
|
0.34 kg / 0.75 LBS
342.3 g / 3.4 N
|
weak grip |
| 5 mm |
661 Gs
66.1 mT
|
0.10 kg / 0.23 LBS
104.9 g / 1.0 N
|
weak grip |
| 10 mm |
178 Gs
17.8 mT
|
0.01 kg / 0.02 LBS
7.6 g / 0.1 N
|
weak grip |
| 15 mm |
66 Gs
6.6 mT
|
0.00 kg / 0.00 LBS
1.1 g / 0.0 N
|
weak grip |
| 20 mm |
31 Gs
3.1 mT
|
0.00 kg / 0.00 LBS
0.2 g / 0.0 N
|
weak grip |
| 30 mm |
10 Gs
1.0 mT
|
0.00 kg / 0.00 LBS
0.0 g / 0.0 N
|
weak grip |
| 50 mm |
2 Gs
0.2 mT
|
0.00 kg / 0.00 LBS
0.0 g / 0.0 N
|
weak grip |
Table 2: Shear force (vertical surface)
MW 10x2 / N38
| Distance (mm) | Friction coefficient | Pull Force (kg/lbs/g/N) |
|---|---|---|
| 0 mm | Stal (~0.2) |
0.25 kg / 0.56 LBS
254.0 g / 2.5 N
|
| 1 mm | Stal (~0.2) |
0.19 kg / 0.41 LBS
188.0 g / 1.8 N
|
| 2 mm | Stal (~0.2) |
0.12 kg / 0.26 LBS
118.0 g / 1.2 N
|
| 3 mm | Stal (~0.2) |
0.07 kg / 0.15 LBS
68.0 g / 0.7 N
|
| 5 mm | Stal (~0.2) |
0.02 kg / 0.04 LBS
20.0 g / 0.2 N
|
| 10 mm | Stal (~0.2) |
0.00 kg / 0.00 LBS
2.0 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
|
Table 3: Vertical assembly (sliding) - vertical pull
MW 10x2 / N38
| Surface type | Friction coefficient / % Mocy | Max load (kg/lbs/g/N) |
|---|---|---|
| Raw steel |
µ = 0.3
30% Nominalnej Siły
|
0.38 kg / 0.84 LBS
381.0 g / 3.7 N
|
| Painted steel (standard) |
µ = 0.2
20% Nominalnej Siły
|
0.25 kg / 0.56 LBS
254.0 g / 2.5 N
|
| Oily/slippery steel |
µ = 0.1
10% Nominalnej Siły
|
0.13 kg / 0.28 LBS
127.0 g / 1.2 N
|
| Magnet with anti-slip rubber |
µ = 0.5
50% Nominalnej Siły
|
0.64 kg / 1.40 LBS
635.0 g / 6.2 N
|
Table 4: Steel thickness (saturation) - sheet metal selection
MW 10x2 / N38
| Steel thickness (mm) | % power | Real pull force (kg/lbs/g/N) |
|---|---|---|
| 0.5 mm |
|
0.13 kg / 0.28 LBS
127.0 g / 1.2 N
|
| 1 mm |
|
0.32 kg / 0.70 LBS
317.5 g / 3.1 N
|
| 2 mm |
|
0.64 kg / 1.40 LBS
635.0 g / 6.2 N
|
| 3 mm |
|
0.95 kg / 2.10 LBS
952.5 g / 9.3 N
|
| 5 mm |
|
1.27 kg / 2.80 LBS
1270.0 g / 12.5 N
|
| 10 mm |
|
1.27 kg / 2.80 LBS
1270.0 g / 12.5 N
|
| 11 mm |
|
1.27 kg / 2.80 LBS
1270.0 g / 12.5 N
|
| 12 mm |
|
1.27 kg / 2.80 LBS
1270.0 g / 12.5 N
|
Table 5: Working in heat (stability) - thermal limit
MW 10x2 / N38
| Ambient temp. (°C) | Power loss | Remaining pull (kg/lbs/g/N) | Status |
|---|---|---|---|
| 20 °C | 0.0% |
1.27 kg / 2.80 LBS
1270.0 g / 12.5 N
|
OK |
| 40 °C | -2.2% |
1.24 kg / 2.74 LBS
1242.1 g / 12.2 N
|
OK |
| 60 °C | -4.4% |
1.21 kg / 2.68 LBS
1214.1 g / 11.9 N
|
|
| 80 °C | -6.6% |
1.19 kg / 2.62 LBS
1186.2 g / 11.6 N
|
|
| 100 °C | -28.8% |
0.90 kg / 1.99 LBS
904.2 g / 8.9 N
|
Table 6: Two magnets (attraction) - forces in the system
MW 10x2 / N38
| Gap (mm) | Attraction (kg/lbs) (N-S) | Lateral Force (kg/lbs/g/N) | Repulsion (kg/lbs) (N-N) |
|---|---|---|---|
| 0 mm |
2.56 kg / 5.65 LBS
3 867 Gs
|
0.38 kg / 0.85 LBS
384 g / 3.8 N
|
N/A |
| 1 mm |
2.25 kg / 4.96 LBS
4 312 Gs
|
0.34 kg / 0.74 LBS
338 g / 3.3 N
|
2.03 kg / 4.46 LBS
~0 Gs
|
| 2 mm |
1.89 kg / 4.16 LBS
3 948 Gs
|
0.28 kg / 0.62 LBS
283 g / 2.8 N
|
1.70 kg / 3.74 LBS
~0 Gs
|
| 3 mm |
1.52 kg / 3.36 LBS
3 548 Gs
|
0.23 kg / 0.50 LBS
229 g / 2.2 N
|
1.37 kg / 3.02 LBS
~0 Gs
|
| 5 mm |
0.92 kg / 2.02 LBS
2 750 Gs
|
0.14 kg / 0.30 LBS
137 g / 1.3 N
|
0.82 kg / 1.82 LBS
~0 Gs
|
| 10 mm |
0.21 kg / 0.47 LBS
1 322 Gs
|
0.03 kg / 0.07 LBS
32 g / 0.3 N
|
0.19 kg / 0.42 LBS
~0 Gs
|
| 20 mm |
0.02 kg / 0.03 LBS
355 Gs
|
0.00 kg / 0.01 LBS
2 g / 0.0 N
|
0.01 kg / 0.03 LBS
~0 Gs
|
| 50 mm |
0.00 kg / 0.00 LBS
33 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
20 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
13 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
9 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
6 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
5 Gs
|
0.00 kg / 0.00 LBS
0 g / 0.0 N
|
0.00 kg / 0.00 LBS
~0 Gs
|
Table 7: Protective zones (electronics) - warnings
MW 10x2 / N38
| Object / Device | Limit (Gauss) / mT | Safe distance |
|---|---|---|
| Pacemaker | 5 Gs (0.5 mT) | 4.0 cm |
| Hearing aid | 10 Gs (1.0 mT) | 3.5 cm |
| Mechanical watch | 20 Gs (2.0 mT) | 2.5 cm |
| Mobile device | 40 Gs (4.0 mT) | 2.0 cm |
| Car key | 50 Gs (5.0 mT) | 2.0 cm |
| Payment card | 400 Gs (40.0 mT) | 1.0 cm |
| HDD hard drive | 600 Gs (60.0 mT) | 1.0 cm |
Table 8: Impact energy (cracking risk) - collision effects
MW 10x2 / N38
| Start from (mm) | Speed (km/h) | Energy (J) | Predicted outcome |
|---|---|---|---|
| 10 mm |
33.21 km/h
(9.22 m/s)
|
0.05 J | |
| 30 mm |
57.31 km/h
(15.92 m/s)
|
0.15 J | |
| 50 mm |
73.98 km/h
(20.55 m/s)
|
0.25 J | |
| 100 mm |
104.63 km/h
(29.06 m/s)
|
0.50 J |
Table 9: Corrosion resistance
MW 10x2 / 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 (Flux)
MW 10x2 / N38
| Parameter | Value | SI Unit / Description |
|---|---|---|
| Magnetic Flux | 2 097 Mx | 21.0 µWb |
| Pc Coefficient | 0.29 | Low (Flat) |
Table 11: Physics of underwater searching
MW 10x2 / N38
| Environment | Effective steel pull | Effect |
|---|---|---|
| Air (land) | 1.27 kg | Standard |
| Water (riverbed) |
1.45 kg
(+0.18 kg buoyancy gain)
|
+14.5% |
1. Vertical hold
*Warning: On a vertical surface, the magnet holds only a fraction of its max power.
2. Efficiency vs thickness
*Thin steel (e.g. 0.5mm PC case) significantly reduces the holding force.
3. Power loss vs temp
*For N38 material, the safety limit is 80°C.
4. Demagnetization curve and operating point (B-H)
chart generated for the permeance coefficient Pc (Permeance Coefficient) = 0.29
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.
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 |
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Advantages as well as disadvantages of Nd2Fe14B magnets.
Advantages
- They have unchanged lifting capacity, and over nearly 10 years their performance decreases symbolically – ~1% (according to theory),
- They maintain their magnetic properties even under close interference source,
- Thanks to the shiny finish, the surface of nickel, gold-plated, or silver gives an professional appearance,
- Neodymium magnets ensure maximum magnetic induction on a small area, which ensures high operational effectiveness,
- Made from properly selected components, these magnets show impressive resistance to high heat, enabling them to function (depending on their form) at temperatures up to 230°C and above...
- Due to the possibility of precise forming and adaptation to specialized projects, neodymium magnets can be manufactured in a wide range of shapes and sizes, which increases their versatility,
- Wide application in electronics industry – they serve a role in hard drives, electric drive systems, medical devices, and multitasking production systems.
- Relatively small size with high pulling force – neodymium magnets offer high power in compact dimensions, which allows their use in small systems
Weaknesses
- At very strong impacts they can crack, therefore we advise placing them in steel cases. A metal housing provides additional protection against damage and increases the magnet's durability.
- When exposed to high temperature, neodymium magnets experience a drop in power. Often, when the temperature exceeds 80°C, their strength decreases (depending on the size, as well as shape of the magnet). For those who need magnets for extreme conditions, we offer [AH] versions withstanding up to 230°C
- Due to the susceptibility of magnets to corrosion in a humid environment, we recommend using waterproof magnets made of rubber, plastic or other material immune to moisture, in case of application outdoors
- We suggest a housing - magnetic mechanism, due to difficulties in producing nuts inside the magnet and complicated forms.
- Health risk resulting from small fragments of magnets can be dangerous, in case of ingestion, which is particularly important in the context of child health protection. It is also worth noting that small components of these products are able to be problematic in diagnostics medical in case of swallowing.
- Due to neodymium price, their price exceeds standard values,
Pull force analysis
Optimal lifting capacity of a neodymium magnet – what contributes to it?
- using a sheet made of low-carbon steel, functioning as a ideal flux conductor
- possessing a massiveness of min. 10 mm to ensure full flux closure
- with an ideally smooth touching surface
- with direct contact (no impurities)
- during detachment in a direction vertical to the mounting surface
- at standard ambient temperature
Determinants of practical lifting force of a magnet
- Clearance – existence of foreign body (paint, dirt, gap) acts as an insulator, which reduces capacity steeply (even by 50% at 0.5 mm).
- Pull-off angle – remember that the magnet holds strongest perpendicularly. Under shear forces, the holding force drops significantly, often to levels of 20-30% of the nominal value.
- Element thickness – for full efficiency, the steel must be adequately massive. Paper-thin metal limits the attraction force (the magnet "punches through" it).
- Steel type – low-carbon steel attracts best. Alloy steels lower magnetic permeability and holding force.
- Surface condition – smooth surfaces ensure maximum contact, which increases force. Uneven metal weaken the grip.
- Operating temperature – neodymium magnets have a negative temperature coefficient. When it is hot they lose power, and at low temperatures they can be stronger (up to a certain limit).
Holding force was checked on the plate surface of 20 mm thickness, when a perpendicular force was applied, however under parallel forces the holding force is lower. In addition, even a small distance between the magnet and the plate lowers the load capacity.
Safe handling of NdFeB magnets
Data carriers
Do not bring magnets close to a purse, laptop, or TV. The magnetic field can irreversibly ruin these devices and erase data from cards.
Risk of cracking
Watch out for shards. Magnets can fracture upon violent connection, ejecting shards into the air. Wear goggles.
Finger safety
Danger of trauma: The pulling power is so immense that it can result in hematomas, crushing, and even bone fractures. Use thick gloves.
Maximum temperature
Keep cool. NdFeB magnets are sensitive to heat. If you need resistance above 80°C, ask us about special high-temperature series (H, SH, UH).
Phone sensors
Navigation devices and mobile phones are highly susceptible to magnetism. Direct contact with a strong magnet can decalibrate the sensors in your phone.
Choking Hazard
NdFeB magnets are not suitable for play. Accidental ingestion of a few magnets can lead to them pinching intestinal walls, which constitutes a direct threat to life and necessitates urgent medical intervention.
Mechanical processing
Dust produced during machining of magnets is self-igniting. Do not drill into magnets unless you are an expert.
Warning for heart patients
Life threat: Strong magnets can deactivate heart devices and defibrillators. Do not approach if you have electronic implants.
Metal Allergy
Some people have a contact allergy to Ni, which is the typical protective layer for NdFeB magnets. Frequent touching might lead to a rash. We strongly advise wear protective gloves.
Caution required
Handle magnets consciously. Their immense force can surprise even professionals. Plan your moves and respect their power.
