MW 10x4 / N38 - cylindrical magnet
cylindrical magnet
Catalog no 010010
GTIN/EAN: 5906301810094
Diameter Ø
10 mm [±0,1 mm]
Height
4 mm [±0,1 mm]
Weight
2.36 g
Magnetization Direction
↑ axial
Load capacity
2.80 kg / 27.42 N
Magnetic Induction
386.91 mT / 3869 Gs
Coating
[NiCuNi] Nickel
1.021 ZŁ with VAT / pcs + price for transport
0.830 ZŁ net + 23% VAT / pcs
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Technical details - MW 10x4 / N38 - cylindrical magnet
Specification / characteristics - MW 10x4 / N38 - cylindrical magnet
| properties | values |
|---|---|
| Cat. no. | 010010 |
| GTIN/EAN | 5906301810094 |
| Production/Distribution | Dhit sp. z o.o. |
| Country of origin | Poland / China / Germany |
| Customs code | 85059029 |
| Diameter Ø | 10 mm [±0,1 mm] |
| Height | 4 mm [±0,1 mm] |
| Weight | 2.36 g |
| Magnetization Direction | ↑ axial |
| Load capacity ~ ? | 2.80 kg / 27.42 N |
| Magnetic Induction ~ ? | 386.91 mT / 3869 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 analysis of the magnet - report
Presented data constitute the direct effect of a physical simulation. Values are based on models for the material Nd2Fe14B. Real-world conditions may deviate from the simulation results. Treat these calculations as a supplementary guide during assembly planning.
Table 1: Static pull force (force vs gap) - power drop
MW 10x4 / N38
| Distance (mm) | Induction (Gauss) / mT | Pull Force (kg/lbs/g/N) | Risk Status |
|---|---|---|---|
| 0 mm |
3867 Gs
386.7 mT
|
2.80 kg / 6.17 pounds
2800.0 g / 27.5 N
|
strong |
| 1 mm |
3168 Gs
316.8 mT
|
1.88 kg / 4.14 pounds
1879.8 g / 18.4 N
|
weak grip |
| 2 mm |
2460 Gs
246.0 mT
|
1.13 kg / 2.50 pounds
1133.7 g / 11.1 N
|
weak grip |
| 3 mm |
1855 Gs
185.5 mT
|
0.64 kg / 1.42 pounds
644.6 g / 6.3 N
|
weak grip |
| 5 mm |
1036 Gs
103.6 mT
|
0.20 kg / 0.44 pounds
200.9 g / 2.0 N
|
weak grip |
| 10 mm |
293 Gs
29.3 mT
|
0.02 kg / 0.04 pounds
16.1 g / 0.2 N
|
weak grip |
| 15 mm |
114 Gs
11.4 mT
|
0.00 kg / 0.01 pounds
2.4 g / 0.0 N
|
weak grip |
| 20 mm |
55 Gs
5.5 mT
|
0.00 kg / 0.00 pounds
0.6 g / 0.0 N
|
weak grip |
| 30 mm |
18 Gs
1.8 mT
|
0.00 kg / 0.00 pounds
0.1 g / 0.0 N
|
weak grip |
| 50 mm |
4 Gs
0.4 mT
|
0.00 kg / 0.00 pounds
0.0 g / 0.0 N
|
weak grip |
Table 2: Sliding load (vertical surface)
MW 10x4 / N38
| Distance (mm) | Friction coefficient | Pull Force (kg/lbs/g/N) |
|---|---|---|
| 0 mm | Stal (~0.2) |
0.56 kg / 1.23 pounds
560.0 g / 5.5 N
|
| 1 mm | Stal (~0.2) |
0.38 kg / 0.83 pounds
376.0 g / 3.7 N
|
| 2 mm | Stal (~0.2) |
0.23 kg / 0.50 pounds
226.0 g / 2.2 N
|
| 3 mm | Stal (~0.2) |
0.13 kg / 0.28 pounds
128.0 g / 1.3 N
|
| 5 mm | Stal (~0.2) |
0.04 kg / 0.09 pounds
40.0 g / 0.4 N
|
| 10 mm | Stal (~0.2) |
0.00 kg / 0.01 pounds
4.0 g / 0.0 N
|
| 15 mm | Stal (~0.2) |
0.00 kg / 0.00 pounds
0.0 g / 0.0 N
|
| 20 mm | Stal (~0.2) |
0.00 kg / 0.00 pounds
0.0 g / 0.0 N
|
| 30 mm | Stal (~0.2) |
0.00 kg / 0.00 pounds
0.0 g / 0.0 N
|
| 50 mm | Stal (~0.2) |
0.00 kg / 0.00 pounds
0.0 g / 0.0 N
|
Table 3: Vertical assembly (shearing) - vertical pull
MW 10x4 / N38
| Surface type | Friction coefficient / % Mocy | Max load (kg/lbs/g/N) |
|---|---|---|
| Raw steel |
µ = 0.3
30% Nominalnej Siły
|
0.84 kg / 1.85 pounds
840.0 g / 8.2 N
|
| Painted steel (standard) |
µ = 0.2
20% Nominalnej Siły
|
0.56 kg / 1.23 pounds
560.0 g / 5.5 N
|
| Oily/slippery steel |
µ = 0.1
10% Nominalnej Siły
|
0.28 kg / 0.62 pounds
280.0 g / 2.7 N
|
| Magnet with anti-slip rubber |
µ = 0.5
50% Nominalnej Siły
|
1.40 kg / 3.09 pounds
1400.0 g / 13.7 N
|
Table 4: Material efficiency (saturation) - sheet metal selection
MW 10x4 / N38
| Steel thickness (mm) | % power | Real pull force (kg/lbs/g/N) |
|---|---|---|
| 0.5 mm |
|
0.28 kg / 0.62 pounds
280.0 g / 2.7 N
|
| 1 mm |
|
0.70 kg / 1.54 pounds
700.0 g / 6.9 N
|
| 2 mm |
|
1.40 kg / 3.09 pounds
1400.0 g / 13.7 N
|
| 3 mm |
|
2.10 kg / 4.63 pounds
2100.0 g / 20.6 N
|
| 5 mm |
|
2.80 kg / 6.17 pounds
2800.0 g / 27.5 N
|
| 10 mm |
|
2.80 kg / 6.17 pounds
2800.0 g / 27.5 N
|
| 11 mm |
|
2.80 kg / 6.17 pounds
2800.0 g / 27.5 N
|
| 12 mm |
|
2.80 kg / 6.17 pounds
2800.0 g / 27.5 N
|
Table 5: Working in heat (material behavior) - thermal limit
MW 10x4 / N38
| Ambient temp. (°C) | Power loss | Remaining pull (kg/lbs/g/N) | Status |
|---|---|---|---|
| 20 °C | 0.0% |
2.80 kg / 6.17 pounds
2800.0 g / 27.5 N
|
OK |
| 40 °C | -2.2% |
2.74 kg / 6.04 pounds
2738.4 g / 26.9 N
|
OK |
| 60 °C | -4.4% |
2.68 kg / 5.90 pounds
2676.8 g / 26.3 N
|
|
| 80 °C | -6.6% |
2.62 kg / 5.77 pounds
2615.2 g / 25.7 N
|
|
| 100 °C | -28.8% |
1.99 kg / 4.40 pounds
1993.6 g / 19.6 N
|
Table 6: Two magnets (attraction) - field collision
MW 10x4 / N38
| Gap (mm) | Attraction (kg/lbs) (N-S) | Shear Force (kg/lbs/g/N) | Repulsion (kg/lbs) (N-N) |
|---|---|---|---|
| 0 mm |
7.24 kg / 15.96 pounds
5 247 Gs
|
1.09 kg / 2.39 pounds
1086 g / 10.7 N
|
N/A |
| 1 mm |
6.04 kg / 13.31 pounds
7 061 Gs
|
0.91 kg / 2.00 pounds
905 g / 8.9 N
|
5.43 kg / 11.98 pounds
~0 Gs
|
| 2 mm |
4.86 kg / 10.71 pounds
6 336 Gs
|
0.73 kg / 1.61 pounds
729 g / 7.2 N
|
4.37 kg / 9.64 pounds
~0 Gs
|
| 3 mm |
3.81 kg / 8.41 pounds
5 612 Gs
|
0.57 kg / 1.26 pounds
572 g / 5.6 N
|
3.43 kg / 7.56 pounds
~0 Gs
|
| 5 mm |
2.22 kg / 4.90 pounds
4 283 Gs
|
0.33 kg / 0.73 pounds
333 g / 3.3 N
|
2.00 kg / 4.41 pounds
~0 Gs
|
| 10 mm |
0.52 kg / 1.15 pounds
2 071 Gs
|
0.08 kg / 0.17 pounds
78 g / 0.8 N
|
0.47 kg / 1.03 pounds
~0 Gs
|
| 20 mm |
0.04 kg / 0.09 pounds
587 Gs
|
0.01 kg / 0.01 pounds
6 g / 0.1 N
|
0.04 kg / 0.08 pounds
~0 Gs
|
| 50 mm |
0.00 kg / 0.00 pounds
61 Gs
|
0.00 kg / 0.00 pounds
0 g / 0.0 N
|
0.00 kg / 0.00 pounds
~0 Gs
|
| 60 mm |
0.00 kg / 0.00 pounds
37 Gs
|
0.00 kg / 0.00 pounds
0 g / 0.0 N
|
0.00 kg / 0.00 pounds
~0 Gs
|
| 70 mm |
0.00 kg / 0.00 pounds
24 Gs
|
0.00 kg / 0.00 pounds
0 g / 0.0 N
|
0.00 kg / 0.00 pounds
~0 Gs
|
| 80 mm |
0.00 kg / 0.00 pounds
16 Gs
|
0.00 kg / 0.00 pounds
0 g / 0.0 N
|
0.00 kg / 0.00 pounds
~0 Gs
|
| 90 mm |
0.00 kg / 0.00 pounds
12 Gs
|
0.00 kg / 0.00 pounds
0 g / 0.0 N
|
0.00 kg / 0.00 pounds
~0 Gs
|
| 100 mm |
0.00 kg / 0.00 pounds
9 Gs
|
0.00 kg / 0.00 pounds
0 g / 0.0 N
|
0.00 kg / 0.00 pounds
~0 Gs
|
Table 7: Protective zones (implants) - precautionary measures
MW 10x4 / N38
| Object / Device | Limit (Gauss) / mT | Safe distance |
|---|---|---|
| Pacemaker | 5 Gs (0.5 mT) | 5.0 cm |
| Hearing aid | 10 Gs (1.0 mT) | 4.0 cm |
| Timepiece | 20 Gs (2.0 mT) | 3.0 cm |
| Mobile device | 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: Dynamics (cracking risk) - warning
MW 10x4 / N38
| Start from (mm) | Speed (km/h) | Energy (J) | Predicted outcome |
|---|---|---|---|
| 10 mm |
34.86 km/h
(9.68 m/s)
|
0.11 J | |
| 30 mm |
60.17 km/h
(16.71 m/s)
|
0.33 J | |
| 50 mm |
77.68 km/h
(21.58 m/s)
|
0.55 J | |
| 100 mm |
109.85 km/h
(30.51 m/s)
|
1.10 J |
Table 9: Coating parameters (durability)
MW 10x4 / 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 (Pc)
MW 10x4 / N38
| Parameter | Value | SI Unit / Description |
|---|---|---|
| Magnetic Flux | 3 142 Mx | 31.4 µWb |
| Pc Coefficient | 0.50 | Low (Flat) |
Table 11: Submerged application
MW 10x4 / N38
| Environment | Effective steel pull | Effect |
|---|---|---|
| Air (land) | 2.80 kg | Standard |
| Water (riverbed) |
3.21 kg
(+0.41 kg buoyancy gain)
|
+14.5% |
1. Shear force
*Warning: On a vertical wall, the magnet holds just approx. 20-30% of its max power.
2. Plate thickness effect
*Thin steel (e.g. 0.5mm PC case) drastically weakens the holding force.
3. Power loss vs temp
*For standard magnets, the max working temp is 80°C.
4. Demagnetization curve and operating point (B-H)
chart generated for the permeance coefficient Pc (Permeance Coefficient) = 0.50
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 |
View also deals
Pros and cons of neodymium magnets.
Pros
- They retain attractive force for almost 10 years – the loss is just ~1% (according to analyses),
- They have excellent resistance to weakening of magnetic properties due to opposing magnetic fields,
- In other words, due to the smooth finish of silver, the element is aesthetically pleasing,
- Magnets have extremely high magnetic induction on the outer layer,
- Due to their durability and thermal resistance, neodymium magnets can operate (depending on the shape) even at high temperatures reaching 230°C or more...
- Thanks to the option of accurate shaping and customization to specialized projects, NdFeB magnets can be modeled in a broad palette of shapes and sizes, which expands the range of possible applications,
- Fundamental importance in modern technologies – they find application in computer drives, electromotive mechanisms, medical equipment, as well as multitasking production systems.
- Compactness – despite small sizes they provide effective action, making them ideal for precision applications
Weaknesses
- Susceptibility to cracking is one of their disadvantages. Upon intense impact they can break. We recommend keeping them in a strong case, which not only protects them against impacts but also increases their durability
- We warn that neodymium magnets can lose their strength at high temperatures. To prevent this, we suggest 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
- Due to limitations in realizing nuts and complicated forms in magnets, we recommend using casing - magnetic holder.
- Potential hazard related to microscopic parts of magnets are risky, in case of ingestion, which is particularly important in the context of child safety. It is also worth noting that tiny parts of these products can disrupt the diagnostic process medical after entering the body.
- With budget limitations the cost of neodymium magnets can be a barrier,
Pull force analysis
Highest magnetic holding force – what contributes to it?
- with the application of a yoke made of special test steel, guaranteeing maximum field concentration
- possessing a thickness of at least 10 mm to ensure full flux closure
- with an ground contact surface
- under conditions of gap-free contact (surface-to-surface)
- during pulling in a direction vertical to the mounting surface
- at temperature approx. 20 degrees Celsius
Practical lifting capacity: influencing factors
- Distance – existence of any layer (rust, dirt, gap) acts as an insulator, which lowers power steeply (even by 50% at 0.5 mm).
- Angle of force application – maximum parameter is available only during perpendicular pulling. The shear force of the magnet along the plate is usually many times smaller (approx. 1/5 of the lifting capacity).
- Steel thickness – too thin plate does not close the flux, causing part of the power to be escaped to the other side.
- Chemical composition of the base – mild steel attracts best. Alloy steels decrease magnetic properties and holding force.
- Surface condition – smooth surfaces ensure maximum contact, which increases field saturation. Uneven metal weaken the grip.
- Temperature – heating the magnet results in weakening of induction. It is worth remembering the maximum operating temperature for a given model.
Holding force was checked on the plate surface of 20 mm thickness, when a perpendicular force was applied, in contrast under attempts to slide the magnet the load capacity is reduced by as much as 5 times. In addition, even a minimal clearance between the magnet’s surface and the plate reduces the holding force.
Safe handling of neodymium magnets
Serious injuries
Big blocks can smash fingers in a fraction of a second. Do not put your hand between two attracting surfaces.
Precision electronics
A powerful magnetic field disrupts the operation of compasses in smartphones and GPS navigation. Do not bring magnets close to a device to avoid breaking the sensors.
Material brittleness
Beware of splinters. Magnets can fracture upon uncontrolled impact, launching sharp fragments into the air. Wear goggles.
Data carriers
Do not bring magnets close to a wallet, laptop, or screen. The magnetic field can irreversibly ruin these devices and wipe information from cards.
Do not underestimate power
Use magnets consciously. Their huge power can surprise even professionals. Plan your moves and respect their power.
Warning for allergy sufferers
It is widely known that the nickel plating (the usual finish) is a strong allergen. For allergy sufferers, refrain from touching magnets with bare hands and choose encased magnets.
Machining danger
Powder generated during grinding of magnets is combustible. Do not drill into magnets without proper cooling and knowledge.
Heat warning
Regular neodymium magnets (grade N) lose magnetization when the temperature surpasses 80°C. This process is irreversible.
Medical interference
Life threat: Strong magnets can deactivate heart devices and defibrillators. Do not approach if you have medical devices.
Swallowing risk
Adult use only. Small elements pose a choking risk, causing severe trauma. Store away from kids and pets.
