MW 10x5 / N38 - cylindrical magnet
cylindrical magnet
Catalog no 010011
GTIN/EAN: 5906301810100
Diameter Ø
10 mm [±0,1 mm]
Height
5 mm [±0,1 mm]
Weight
2.95 g
Magnetization Direction
↑ axial
Load capacity
3.19 kg / 31.28 N
Magnetic Induction
437.91 mT / 4379 Gs
Coating
[NiCuNi] Nickel
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Technical details - MW 10x5 / N38 - cylindrical magnet
Specification / characteristics - MW 10x5 / N38 - cylindrical magnet
| properties | values |
|---|---|
| Cat. no. | 010011 |
| GTIN/EAN | 5906301810100 |
| Production/Distribution | Dhit sp. z o.o. |
| Country of origin | Poland / China / Germany |
| Customs code | 85059029 |
| Diameter Ø | 10 mm [±0,1 mm] |
| Height | 5 mm [±0,1 mm] |
| Weight | 2.95 g |
| Magnetization Direction | ↑ axial |
| Load capacity ~ ? | 3.19 kg / 31.28 N |
| Magnetic Induction ~ ? | 437.91 mT / 4379 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 |
Physical modeling of the magnet - technical parameters
The following values are the outcome of a physical simulation. Values were calculated on models for the class Nd2Fe14B. Actual conditions may differ from theoretical values. Treat these calculations as a preliminary roadmap when designing systems.
Table 1: Static force (force vs gap) - power drop
MW 10x5 / N38
| Distance (mm) | Induction (Gauss) / mT | Pull Force (kg/lbs/g/N) | Risk Status |
|---|---|---|---|
| 0 mm |
4376 Gs
437.6 mT
|
3.19 kg / 7.03 lbs
3190.0 g / 31.3 N
|
strong |
| 1 mm |
3547 Gs
354.7 mT
|
2.10 kg / 4.62 lbs
2095.9 g / 20.6 N
|
strong |
| 2 mm |
2743 Gs
274.3 mT
|
1.25 kg / 2.76 lbs
1252.9 g / 12.3 N
|
safe |
| 3 mm |
2068 Gs
206.8 mT
|
0.71 kg / 1.57 lbs
712.2 g / 7.0 N
|
safe |
| 5 mm |
1161 Gs
116.1 mT
|
0.22 kg / 0.50 lbs
224.7 g / 2.2 N
|
safe |
| 10 mm |
336 Gs
33.6 mT
|
0.02 kg / 0.04 lbs
18.8 g / 0.2 N
|
safe |
| 15 mm |
133 Gs
13.3 mT
|
0.00 kg / 0.01 lbs
2.9 g / 0.0 N
|
safe |
| 20 mm |
65 Gs
6.5 mT
|
0.00 kg / 0.00 lbs
0.7 g / 0.0 N
|
safe |
| 30 mm |
22 Gs
2.2 mT
|
0.00 kg / 0.00 lbs
0.1 g / 0.0 N
|
safe |
| 50 mm |
5 Gs
0.5 mT
|
0.00 kg / 0.00 lbs
0.0 g / 0.0 N
|
safe |
Table 2: Shear capacity (vertical surface)
MW 10x5 / N38
| Distance (mm) | Friction coefficient | Pull Force (kg/lbs/g/N) |
|---|---|---|
| 0 mm | Stal (~0.2) |
0.64 kg / 1.41 lbs
638.0 g / 6.3 N
|
| 1 mm | Stal (~0.2) |
0.42 kg / 0.93 lbs
420.0 g / 4.1 N
|
| 2 mm | Stal (~0.2) |
0.25 kg / 0.55 lbs
250.0 g / 2.5 N
|
| 3 mm | Stal (~0.2) |
0.14 kg / 0.31 lbs
142.0 g / 1.4 N
|
| 5 mm | Stal (~0.2) |
0.04 kg / 0.10 lbs
44.0 g / 0.4 N
|
| 10 mm | Stal (~0.2) |
0.00 kg / 0.01 lbs
4.0 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: Wall mounting (shearing) - behavior on slippery surfaces
MW 10x5 / N38
| Surface type | Friction coefficient / % Mocy | Max load (kg/lbs/g/N) |
|---|---|---|
| Raw steel |
µ = 0.3
30% Nominalnej Siły
|
0.96 kg / 2.11 lbs
957.0 g / 9.4 N
|
| Painted steel (standard) |
µ = 0.2
20% Nominalnej Siły
|
0.64 kg / 1.41 lbs
638.0 g / 6.3 N
|
| Oily/slippery steel |
µ = 0.1
10% Nominalnej Siły
|
0.32 kg / 0.70 lbs
319.0 g / 3.1 N
|
| Magnet with anti-slip rubber |
µ = 0.5
50% Nominalnej Siły
|
1.60 kg / 3.52 lbs
1595.0 g / 15.6 N
|
Table 4: Steel thickness (substrate influence) - sheet metal selection
MW 10x5 / N38
| Steel thickness (mm) | % power | Real pull force (kg/lbs/g/N) |
|---|---|---|
| 0.5 mm |
|
0.32 kg / 0.70 lbs
319.0 g / 3.1 N
|
| 1 mm |
|
0.80 kg / 1.76 lbs
797.5 g / 7.8 N
|
| 2 mm |
|
1.60 kg / 3.52 lbs
1595.0 g / 15.6 N
|
| 3 mm |
|
2.39 kg / 5.27 lbs
2392.5 g / 23.5 N
|
| 5 mm |
|
3.19 kg / 7.03 lbs
3190.0 g / 31.3 N
|
| 10 mm |
|
3.19 kg / 7.03 lbs
3190.0 g / 31.3 N
|
| 11 mm |
|
3.19 kg / 7.03 lbs
3190.0 g / 31.3 N
|
| 12 mm |
|
3.19 kg / 7.03 lbs
3190.0 g / 31.3 N
|
Table 5: Thermal stability (material behavior) - thermal limit
MW 10x5 / N38
| Ambient temp. (°C) | Power loss | Remaining pull (kg/lbs/g/N) | Status |
|---|---|---|---|
| 20 °C | 0.0% |
3.19 kg / 7.03 lbs
3190.0 g / 31.3 N
|
OK |
| 40 °C | -2.2% |
3.12 kg / 6.88 lbs
3119.8 g / 30.6 N
|
OK |
| 60 °C | -4.4% |
3.05 kg / 6.72 lbs
3049.6 g / 29.9 N
|
|
| 80 °C | -6.6% |
2.98 kg / 6.57 lbs
2979.5 g / 29.2 N
|
|
| 100 °C | -28.8% |
2.27 kg / 5.01 lbs
2271.3 g / 22.3 N
|
Table 6: Magnet-Magnet interaction (attraction) - field collision
MW 10x5 / N38
| Gap (mm) | Attraction (kg/lbs) (N-S) | Sliding Force (kg/lbs/g/N) | Repulsion (kg/lbs) (N-N) |
|---|---|---|---|
| 0 mm |
9.27 kg / 20.44 lbs
5 534 Gs
|
1.39 kg / 3.07 lbs
1391 g / 13.6 N
|
N/A |
| 1 mm |
7.63 kg / 16.83 lbs
7 941 Gs
|
1.15 kg / 2.52 lbs
1145 g / 11.2 N
|
6.87 kg / 15.15 lbs
~0 Gs
|
| 2 mm |
6.09 kg / 13.43 lbs
7 094 Gs
|
0.91 kg / 2.01 lbs
914 g / 9.0 N
|
5.48 kg / 12.09 lbs
~0 Gs
|
| 3 mm |
4.75 kg / 10.48 lbs
6 265 Gs
|
0.71 kg / 1.57 lbs
713 g / 7.0 N
|
4.28 kg / 9.43 lbs
~0 Gs
|
| 5 mm |
2.76 kg / 6.08 lbs
4 772 Gs
|
0.41 kg / 0.91 lbs
413 g / 4.1 N
|
2.48 kg / 5.47 lbs
~0 Gs
|
| 10 mm |
0.65 kg / 1.44 lbs
2 323 Gs
|
0.10 kg / 0.22 lbs
98 g / 1.0 N
|
0.59 kg / 1.30 lbs
~0 Gs
|
| 20 mm |
0.05 kg / 0.12 lbs
673 Gs
|
0.01 kg / 0.02 lbs
8 g / 0.1 N
|
0.05 kg / 0.11 lbs
~0 Gs
|
| 50 mm |
0.00 kg / 0.00 lbs
72 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
44 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
29 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
20 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
14 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
11 Gs
|
0.00 kg / 0.00 lbs
0 g / 0.0 N
|
0.00 kg / 0.00 lbs
~0 Gs
|
Table 7: Protective zones (implants) - warnings
MW 10x5 / N38
| Object / Device | Limit (Gauss) / mT | Safe distance |
|---|---|---|
| Pacemaker | 5 Gs (0.5 mT) | 5.5 cm |
| Hearing aid | 10 Gs (1.0 mT) | 4.0 cm |
| Timepiece | 20 Gs (2.0 mT) | 3.5 cm |
| Phone / Smartphone | 40 Gs (4.0 mT) | 2.5 cm |
| Remote | 50 Gs (5.0 mT) | 2.5 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 (kinetic energy) - collision effects
MW 10x5 / N38
| Start from (mm) | Speed (km/h) | Energy (J) | Predicted outcome |
|---|---|---|---|
| 10 mm |
33.29 km/h
(9.25 m/s)
|
0.13 J | |
| 30 mm |
57.44 km/h
(15.96 m/s)
|
0.38 J | |
| 50 mm |
74.16 km/h
(20.60 m/s)
|
0.63 J | |
| 100 mm |
104.87 km/h
(29.13 m/s)
|
1.25 J |
Table 9: Anti-corrosion coating durability
MW 10x5 / 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: Construction data (Flux)
MW 10x5 / N38
| Parameter | Value | SI Unit / Description |
|---|---|---|
| Magnetic Flux | 3 489 Mx | 34.9 µWb |
| Pc Coefficient | 0.59 | Low (Flat) |
Table 11: Hydrostatics and buoyancy
MW 10x5 / N38
| Environment | Effective steel pull | Effect |
|---|---|---|
| Air (land) | 3.19 kg | Standard |
| Water (riverbed) |
3.65 kg
(+0.46 kg buoyancy gain)
|
+14.5% |
1. Wall mount (shear)
*Note: On a vertical surface, the magnet retains just a fraction of its max power.
2. Steel thickness impact
*Thin metal sheet (e.g. computer case) significantly weakens the holding force.
3. Heat tolerance
*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) = 0.59
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.
Elemental analysis
| 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% |
Environmental data
| recyclability (EoL) | 100% |
| recycled raw materials | ~10% (pre-cons) |
| carbon footprint | low / zredukowany |
| waste code (EWC) | 16 02 16 |
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Strengths and weaknesses of neodymium magnets.
Pros
- They retain attractive force for almost 10 years – the loss is just ~1% (according to analyses),
- Neodymium magnets are exceptionally resistant to magnetic field loss caused by external field sources,
- The use of an metallic finish of noble metals (nickel, gold, silver) causes the element to look better,
- Magnetic induction on the top side of the magnet is maximum,
- Thanks to resistance to high temperature, they are capable of working (depending on the shape) even at temperatures up to 230°C and higher...
- Thanks to freedom in shaping and the ability to adapt to unusual requirements,
- Wide application in electronics industry – they serve a role in computer drives, electric motors, precision medical tools, and technologically advanced constructions.
- Compactness – despite small sizes they generate large force, making them ideal for precision applications
Cons
- To avoid cracks upon strong impacts, we suggest using special steel holders. Such a solution secures the magnet and simultaneously increases its durability.
- NdFeB magnets lose strength when exposed to high temperatures. After reaching 80°C, many of them experience permanent drop of strength (a factor is the shape and dimensions of the magnet). We offer magnets specially adapted to work at temperatures up to 230°C marked [AH], which are extremely resistant to heat
- When exposed to humidity, magnets usually rust. For applications outside, it is recommended to use protective magnets, such as magnets in rubber or plastics, which prevent oxidation as well as corrosion.
- Due to limitations in realizing nuts and complicated shapes in magnets, we recommend using casing - magnetic holder.
- Possible danger related to microscopic parts of magnets are risky, in case of ingestion, which is particularly important in the context of child health protection. It is also worth noting that tiny parts of these products can complicate diagnosis 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
Lifting parameters
Detachment force of the magnet in optimal conditions – what contributes to it?
- using a plate made of mild steel, acting as a ideal flux conductor
- with a cross-section of at least 10 mm
- characterized by smoothness
- without any clearance between the magnet and steel
- under vertical application of breakaway force (90-degree angle)
- at conditions approx. 20°C
Lifting capacity in practice – influencing factors
- Clearance – the presence of foreign body (paint, dirt, gap) acts as an insulator, which lowers capacity steeply (even by 50% at 0.5 mm).
- Angle of force application – maximum parameter is obtained only during perpendicular pulling. The force required to slide of the magnet along the surface is typically several times lower (approx. 1/5 of the lifting capacity).
- Steel thickness – insufficiently thick sheet does not close the flux, causing part of the flux to be lost to the other side.
- Material composition – not every steel reacts the same. High carbon content weaken the attraction effect.
- Plate texture – ground elements guarantee perfect abutment, which increases force. Uneven metal weaken the grip.
- Temperature – heating the magnet results in weakening of force. Check the thermal limit for a given model.
Holding force was checked on the plate surface of 20 mm thickness, when the force acted perpendicularly, in contrast under parallel forces the load capacity is reduced by as much as 75%. Moreover, even a minimal clearance between the magnet and the plate decreases the lifting capacity.
H&S for magnets
Maximum temperature
Regular neodymium magnets (N-type) lose magnetization when the temperature surpasses 80°C. Damage is permanent.
Magnetic interference
GPS units and smartphones are highly susceptible to magnetic fields. Close proximity with a strong magnet can permanently damage the sensors in your phone.
Bodily injuries
Danger of trauma: The attraction force is so immense that it can cause hematomas, pinching, and broken bones. Use thick gloves.
Allergy Warning
It is widely known that nickel (the usual finish) is a potent allergen. If your skin reacts to metals, refrain from touching magnets with bare hands and select versions in plastic housing.
Data carriers
Do not bring magnets close to a purse, laptop, or screen. The magnetism can irreversibly ruin these devices and erase data from cards.
Respect the power
Handle magnets consciously. Their huge power can shock even professionals. Plan your moves and respect their force.
Medical interference
Life threat: Strong magnets can turn off pacemakers and defibrillators. Do not approach if you have medical devices.
Fire warning
Mechanical processing of NdFeB material carries a risk of fire hazard. Magnetic powder reacts violently with oxygen and is difficult to extinguish.
Magnet fragility
Neodymium magnets are ceramic materials, meaning they are prone to chipping. Impact of two magnets will cause them breaking into shards.
Do not give to children
NdFeB magnets are not suitable for play. Eating a few magnets may result in them pinching intestinal walls, which poses a severe health hazard and requires urgent medical intervention.
