MW 2x10 / N38 - cylindrical magnet
cylindrical magnet
Catalog no 010054
GTIN/EAN: 5906301810537
Diameter Ø
2 mm [±0,1 mm]
Height
10 mm [±0,1 mm]
Weight
0.24 g
Magnetization Direction
↑ axial
Load capacity
0.07 kg / 0.70 N
Magnetic Induction
613.08 mT / 6131 Gs
Coating
[NiCuNi] Nickel
0.1845 ZŁ with VAT / pcs + price for transport
0.1500 ZŁ net + 23% VAT / pcs
bulk discounts:
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Technical data of the product - MW 2x10 / N38 - cylindrical magnet
Specification / characteristics - MW 2x10 / N38 - cylindrical magnet
| properties | values |
|---|---|
| Cat. no. | 010054 |
| GTIN/EAN | 5906301810537 |
| Production/Distribution | Dhit sp. z o.o. |
| Country of origin | Poland / China / Germany |
| Customs code | 85059029 |
| Diameter Ø | 2 mm [±0,1 mm] |
| Height | 10 mm [±0,1 mm] |
| Weight | 0.24 g |
| Magnetization Direction | ↑ axial |
| Load capacity ~ ? | 0.07 kg / 0.70 N |
| Magnetic Induction ~ ? | 613.08 mT / 6131 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 |
Technical analysis of the product - technical parameters
Presented values represent the result of a mathematical simulation. Values are based on algorithms for the class Nd2Fe14B. Operational parameters might slightly differ from theoretical values. Use these calculations as a reference point during assembly planning.
Table 1: Static pull force (force vs distance) - power drop
MW 2x10 / N38
| Distance (mm) | Induction (Gauss) / mT | Pull Force (kg/lbs/g/N) | Risk Status |
|---|---|---|---|
| 0 mm |
6107 Gs
610.7 mT
|
0.07 kg / 0.15 pounds
70.0 g / 0.7 N
|
low risk |
| 1 mm |
1790 Gs
179.0 mT
|
0.01 kg / 0.01 pounds
6.0 g / 0.1 N
|
low risk |
| 2 mm |
633 Gs
63.3 mT
|
0.00 kg / 0.00 pounds
0.8 g / 0.0 N
|
low risk |
| 3 mm |
300 Gs
30.0 mT
|
0.00 kg / 0.00 pounds
0.2 g / 0.0 N
|
low risk |
| 5 mm |
107 Gs
10.7 mT
|
0.00 kg / 0.00 pounds
0.0 g / 0.0 N
|
low risk |
| 10 mm |
23 Gs
2.3 mT
|
0.00 kg / 0.00 pounds
0.0 g / 0.0 N
|
low risk |
| 15 mm |
9 Gs
0.9 mT
|
0.00 kg / 0.00 pounds
0.0 g / 0.0 N
|
low risk |
| 20 mm |
4 Gs
0.4 mT
|
0.00 kg / 0.00 pounds
0.0 g / 0.0 N
|
low risk |
| 30 mm |
2 Gs
0.2 mT
|
0.00 kg / 0.00 pounds
0.0 g / 0.0 N
|
low risk |
| 50 mm |
0 Gs
0.0 mT
|
0.00 kg / 0.00 pounds
0.0 g / 0.0 N
|
low risk |
Table 2: Sliding load (wall)
MW 2x10 / N38
| Distance (mm) | Friction coefficient | Pull Force (kg/lbs/g/N) |
|---|---|---|
| 0 mm | Stal (~0.2) |
0.01 kg / 0.03 pounds
14.0 g / 0.1 N
|
| 1 mm | Stal (~0.2) |
0.00 kg / 0.00 pounds
2.0 g / 0.0 N
|
| 2 mm | Stal (~0.2) |
0.00 kg / 0.00 pounds
0.0 g / 0.0 N
|
| 3 mm | Stal (~0.2) |
0.00 kg / 0.00 pounds
0.0 g / 0.0 N
|
| 5 mm | Stal (~0.2) |
0.00 kg / 0.00 pounds
0.0 g / 0.0 N
|
| 10 mm | Stal (~0.2) |
0.00 kg / 0.00 pounds
0.0 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: Wall mounting (sliding) - vertical pull
MW 2x10 / N38
| Surface type | Friction coefficient / % Mocy | Max load (kg/lbs/g/N) |
|---|---|---|
| Raw steel |
µ = 0.3
30% Nominalnej Siły
|
0.02 kg / 0.05 pounds
21.0 g / 0.2 N
|
| Painted steel (standard) |
µ = 0.2
20% Nominalnej Siły
|
0.01 kg / 0.03 pounds
14.0 g / 0.1 N
|
| Oily/slippery steel |
µ = 0.1
10% Nominalnej Siły
|
0.01 kg / 0.02 pounds
7.0 g / 0.1 N
|
| Magnet with anti-slip rubber |
µ = 0.5
50% Nominalnej Siły
|
0.04 kg / 0.08 pounds
35.0 g / 0.3 N
|
Table 4: Material efficiency (saturation) - power losses
MW 2x10 / N38
| Steel thickness (mm) | % power | Real pull force (kg/lbs/g/N) |
|---|---|---|
| 0.5 mm |
|
0.01 kg / 0.02 pounds
7.0 g / 0.1 N
|
| 1 mm |
|
0.02 kg / 0.04 pounds
17.5 g / 0.2 N
|
| 2 mm |
|
0.04 kg / 0.08 pounds
35.0 g / 0.3 N
|
| 3 mm |
|
0.05 kg / 0.12 pounds
52.5 g / 0.5 N
|
| 5 mm |
|
0.07 kg / 0.15 pounds
70.0 g / 0.7 N
|
| 10 mm |
|
0.07 kg / 0.15 pounds
70.0 g / 0.7 N
|
| 11 mm |
|
0.07 kg / 0.15 pounds
70.0 g / 0.7 N
|
| 12 mm |
|
0.07 kg / 0.15 pounds
70.0 g / 0.7 N
|
Table 5: Working in heat (material behavior) - resistance threshold
MW 2x10 / N38
| Ambient temp. (°C) | Power loss | Remaining pull (kg/lbs/g/N) | Status |
|---|---|---|---|
| 20 °C | 0.0% |
0.07 kg / 0.15 pounds
70.0 g / 0.7 N
|
OK |
| 40 °C | -2.2% |
0.07 kg / 0.15 pounds
68.5 g / 0.7 N
|
OK |
| 60 °C | -4.4% |
0.07 kg / 0.15 pounds
66.9 g / 0.7 N
|
OK |
| 80 °C | -6.6% |
0.07 kg / 0.14 pounds
65.4 g / 0.6 N
|
|
| 100 °C | -28.8% |
0.05 kg / 0.11 pounds
49.8 g / 0.5 N
|
Table 6: Two magnets (repulsion) - forces in the system
MW 2x10 / N38
| Gap (mm) | Attraction (kg/lbs) (N-S) | Lateral Force (kg/lbs/g/N) | Repulsion (kg/lbs) (N-N) |
|---|---|---|---|
| 0 mm |
0.72 kg / 1.59 pounds
6 130 Gs
|
0.11 kg / 0.24 pounds
108 g / 1.1 N
|
N/A |
| 1 mm |
0.22 kg / 0.49 pounds
6 799 Gs
|
0.03 kg / 0.07 pounds
34 g / 0.3 N
|
0.20 kg / 0.44 pounds
~0 Gs
|
| 2 mm |
0.06 kg / 0.14 pounds
3 581 Gs
|
0.01 kg / 0.02 pounds
9 g / 0.1 N
|
0.06 kg / 0.12 pounds
~0 Gs
|
| 3 mm |
0.02 kg / 0.04 pounds
2 036 Gs
|
0.00 kg / 0.01 pounds
3 g / 0.0 N
|
0.02 kg / 0.04 pounds
~0 Gs
|
| 5 mm |
0.00 kg / 0.01 pounds
847 Gs
|
0.00 kg / 0.00 pounds
1 g / 0.0 N
|
0.00 kg / 0.00 pounds
~0 Gs
|
| 10 mm |
0.00 kg / 0.00 pounds
213 Gs
|
0.00 kg / 0.00 pounds
0 g / 0.0 N
|
0.00 kg / 0.00 pounds
~0 Gs
|
| 20 mm |
0.00 kg / 0.00 pounds
46 Gs
|
0.00 kg / 0.00 pounds
0 g / 0.0 N
|
0.00 kg / 0.00 pounds
~0 Gs
|
| 50 mm |
0.00 kg / 0.00 pounds
5 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
3 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
2 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
1 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
1 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
1 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) - warnings
MW 2x10 / N38
| Object / Device | Limit (Gauss) / mT | Safe distance |
|---|---|---|
| Pacemaker | 5 Gs (0.5 mT) | 2.0 cm |
| Hearing aid | 10 Gs (1.0 mT) | 1.5 cm |
| Timepiece | 20 Gs (2.0 mT) | 1.5 cm |
| Phone / Smartphone | 40 Gs (4.0 mT) | 1.0 cm |
| Remote | 50 Gs (5.0 mT) | 1.0 cm |
| Payment card | 400 Gs (40.0 mT) | 0.5 cm |
| HDD hard drive | 600 Gs (60.0 mT) | 0.5 cm |
Table 8: Collisions (kinetic energy) - collision effects
MW 2x10 / N38
| Start from (mm) | Speed (km/h) | Energy (J) | Predicted outcome |
|---|---|---|---|
| 10 mm |
17.22 km/h
(4.78 m/s)
|
0.00 J | |
| 30 mm |
29.83 km/h
(8.29 m/s)
|
0.01 J | |
| 50 mm |
38.51 km/h
(10.70 m/s)
|
0.01 J | |
| 100 mm |
54.47 km/h
(15.13 m/s)
|
0.03 J |
Table 9: Anti-corrosion coating durability
MW 2x10 / 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 2x10 / N38
| Parameter | Value | SI Unit / Description |
|---|---|---|
| Magnetic Flux | 232 Mx | 2.3 µWb |
| Pc Coefficient | 1.55 | High (Stable) |
Table 11: Underwater work (magnet fishing)
MW 2x10 / N38
| Environment | Effective steel pull | Effect |
|---|---|---|
| Air (land) | 0.07 kg | Standard |
| Water (riverbed) |
0.08 kg
(+0.01 kg buoyancy gain)
|
+14.5% |
1. Vertical hold
*Caution: On a vertical surface, the magnet retains just approx. 20-30% of its max power.
2. Efficiency vs thickness
*Thin metal sheet (e.g. 0.5mm PC case) significantly weakens the holding force.
3. Thermal stability
*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) = 1.55
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% |
Sustainability
| 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.
Strengths
- They virtually do not lose strength, because even after ten years the performance loss is only ~1% (in laboratory conditions),
- They retain their magnetic properties even under strong external field,
- The use of an refined finish of noble metals (nickel, gold, silver) causes the element to look better,
- The surface of neodymium magnets generates a maximum magnetic field – this is a distinguishing feature,
- Made from properly selected components, these magnets show impressive resistance to high heat, enabling them to function (depending on their shape) at temperatures up to 230°C and above...
- Thanks to freedom in designing and the ability to modify to client solutions,
- Universal use in future technologies – they serve a role in magnetic memories, electric motors, diagnostic systems, also other advanced devices.
- Compactness – despite small sizes they offer powerful magnetic field, making them ideal for precision applications
Limitations
- Brittleness is one of their disadvantages. Upon intense impact they can fracture. We advise keeping them in a special holder, which not only secures 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.
- When exposed to humidity, magnets usually rust. To use them in conditions outside, it is recommended to use protective magnets, such as magnets in rubber or plastics, which prevent oxidation and corrosion.
- We recommend a housing - magnetic holder, due to difficulties in realizing threads inside the magnet and complex forms.
- Health risk related to microscopic parts of magnets are risky, when accidentally swallowed, which becomes key in the context of child health protection. It is also worth noting that small components of these devices can complicate diagnosis medical when they are in the body.
- Due to complex production process, their price is higher than average,
Pull force analysis
Breakaway strength of the magnet in ideal conditions – what contributes to it?
- using a sheet made of low-carbon steel, functioning as a ideal flux conductor
- whose transverse dimension is min. 10 mm
- with a surface free of scratches
- under conditions of gap-free contact (surface-to-surface)
- during pulling in a direction vertical to the plane
- at ambient temperature room level
Magnet lifting force in use – key factors
- Distance – the presence of any layer (paint, tape, air) acts as an insulator, which reduces power rapidly (even by 50% at 0.5 mm).
- Direction of force – highest force is reached only during perpendicular pulling. The resistance to sliding of the magnet along the plate is standardly many times smaller (approx. 1/5 of the lifting capacity).
- Wall thickness – the thinner the sheet, the weaker the hold. Magnetic flux penetrates through instead of generating force.
- Steel type – mild steel attracts best. Alloy admixtures lower magnetic permeability and lifting capacity.
- Surface condition – ground elements guarantee perfect abutment, which improves field saturation. Uneven metal weaken the grip.
- Thermal environment – heating the magnet causes a temporary drop of force. Check the thermal limit for a given model.
Lifting capacity testing was conducted on plates with a smooth surface of suitable thickness, under perpendicular forces, whereas under attempts to slide the magnet the load capacity is reduced by as much as 75%. In addition, even a small distance between the magnet and the plate lowers the load capacity.
Precautions when working with NdFeB magnets
Eye protection
Neodymium magnets are ceramic materials, which means they are fragile like glass. Collision of two magnets leads to them cracking into shards.
Threat to navigation
A powerful magnetic field disrupts the operation of compasses in phones and navigation systems. Maintain magnets close to a device to prevent breaking the sensors.
Cards and drives
Powerful magnetic fields can corrupt files on credit cards, HDDs, and other magnetic media. Maintain a gap of at least 10 cm.
Power loss in heat
Regular neodymium magnets (N-type) undergo demagnetization when the temperature goes above 80°C. The loss of strength is permanent.
Dust explosion hazard
Drilling and cutting of NdFeB material poses a fire risk. Magnetic powder reacts violently with oxygen and is difficult to extinguish.
Product not for children
Always store magnets away from children. Choking hazard is significant, and the effects of magnets connecting inside the body are tragic.
Immense force
Before use, check safety instructions. Sudden snapping can destroy the magnet or injure your hand. Be predictive.
Physical harm
Large magnets can break fingers in a fraction of a second. Under no circumstances put your hand betwixt two attracting surfaces.
Pacemakers
Medical warning: Strong magnets can turn off heart devices and defibrillators. Do not approach if you have medical devices.
Nickel allergy
Allergy Notice: The nickel-copper-nickel coating contains nickel. If an allergic reaction appears, immediately stop handling magnets and wear gloves.
