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
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Technical details - 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 |
Physical modeling of the magnet - data
Presented data represent the result of a physical analysis. Values were calculated on models for the material Nd2Fe14B. Actual conditions might slightly deviate from the simulation results. Please consider these calculations as a reference point when designing systems.
Table 1: Static force (force vs gap) - interaction chart
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 lbs
70.0 g / 0.7 N
|
weak grip |
| 1 mm |
1790 Gs
179.0 mT
|
0.01 kg / 0.01 lbs
6.0 g / 0.1 N
|
weak grip |
| 2 mm |
633 Gs
63.3 mT
|
0.00 kg / 0.00 lbs
0.8 g / 0.0 N
|
weak grip |
| 3 mm |
300 Gs
30.0 mT
|
0.00 kg / 0.00 lbs
0.2 g / 0.0 N
|
weak grip |
| 5 mm |
107 Gs
10.7 mT
|
0.00 kg / 0.00 lbs
0.0 g / 0.0 N
|
weak grip |
| 10 mm |
23 Gs
2.3 mT
|
0.00 kg / 0.00 lbs
0.0 g / 0.0 N
|
weak grip |
| 15 mm |
9 Gs
0.9 mT
|
0.00 kg / 0.00 lbs
0.0 g / 0.0 N
|
weak grip |
| 20 mm |
4 Gs
0.4 mT
|
0.00 kg / 0.00 lbs
0.0 g / 0.0 N
|
weak grip |
| 30 mm |
2 Gs
0.2 mT
|
0.00 kg / 0.00 lbs
0.0 g / 0.0 N
|
weak grip |
| 50 mm |
0 Gs
0.0 mT
|
0.00 kg / 0.00 lbs
0.0 g / 0.0 N
|
weak grip |
Table 2: Slippage force (wall)
MW 2x10 / N38
| Distance (mm) | Friction coefficient | Pull Force (kg/lbs/g/N) |
|---|---|---|
| 0 mm | Stal (~0.2) |
0.01 kg / 0.03 lbs
14.0 g / 0.1 N
|
| 1 mm | Stal (~0.2) |
0.00 kg / 0.00 lbs
2.0 g / 0.0 N
|
| 2 mm | Stal (~0.2) |
0.00 kg / 0.00 lbs
0.0 g / 0.0 N
|
| 3 mm | Stal (~0.2) |
0.00 kg / 0.00 lbs
0.0 g / 0.0 N
|
| 5 mm | Stal (~0.2) |
0.00 kg / 0.00 lbs
0.0 g / 0.0 N
|
| 10 mm | Stal (~0.2) |
0.00 kg / 0.00 lbs
0.0 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 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 lbs
21.0 g / 0.2 N
|
| Painted steel (standard) |
µ = 0.2
20% Nominalnej Siły
|
0.01 kg / 0.03 lbs
14.0 g / 0.1 N
|
| Oily/slippery steel |
µ = 0.1
10% Nominalnej Siły
|
0.01 kg / 0.02 lbs
7.0 g / 0.1 N
|
| Magnet with anti-slip rubber |
µ = 0.5
50% Nominalnej Siły
|
0.04 kg / 0.08 lbs
35.0 g / 0.3 N
|
Table 4: Material efficiency (substrate influence) - sheet metal selection
MW 2x10 / N38
| Steel thickness (mm) | % power | Real pull force (kg/lbs/g/N) |
|---|---|---|
| 0.5 mm |
|
0.01 kg / 0.02 lbs
7.0 g / 0.1 N
|
| 1 mm |
|
0.02 kg / 0.04 lbs
17.5 g / 0.2 N
|
| 2 mm |
|
0.04 kg / 0.08 lbs
35.0 g / 0.3 N
|
| 3 mm |
|
0.05 kg / 0.12 lbs
52.5 g / 0.5 N
|
| 5 mm |
|
0.07 kg / 0.15 lbs
70.0 g / 0.7 N
|
| 10 mm |
|
0.07 kg / 0.15 lbs
70.0 g / 0.7 N
|
| 11 mm |
|
0.07 kg / 0.15 lbs
70.0 g / 0.7 N
|
| 12 mm |
|
0.07 kg / 0.15 lbs
70.0 g / 0.7 N
|
Table 5: Thermal stability (material behavior) - power drop
MW 2x10 / N38
| Ambient temp. (°C) | Power loss | Remaining pull (kg/lbs/g/N) | Status |
|---|---|---|---|
| 20 °C | 0.0% |
0.07 kg / 0.15 lbs
70.0 g / 0.7 N
|
OK |
| 40 °C | -2.2% |
0.07 kg / 0.15 lbs
68.5 g / 0.7 N
|
OK |
| 60 °C | -4.4% |
0.07 kg / 0.15 lbs
66.9 g / 0.7 N
|
OK |
| 80 °C | -6.6% |
0.07 kg / 0.14 lbs
65.4 g / 0.6 N
|
|
| 100 °C | -28.8% |
0.05 kg / 0.11 lbs
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) | Shear Force (kg/lbs/g/N) | Repulsion (kg/lbs) (N-N) |
|---|---|---|---|
| 0 mm |
0.72 kg / 1.59 lbs
6 130 Gs
|
0.11 kg / 0.24 lbs
108 g / 1.1 N
|
N/A |
| 1 mm |
0.22 kg / 0.49 lbs
6 799 Gs
|
0.03 kg / 0.07 lbs
34 g / 0.3 N
|
0.20 kg / 0.44 lbs
~0 Gs
|
| 2 mm |
0.06 kg / 0.14 lbs
3 581 Gs
|
0.01 kg / 0.02 lbs
9 g / 0.1 N
|
0.06 kg / 0.12 lbs
~0 Gs
|
| 3 mm |
0.02 kg / 0.04 lbs
2 036 Gs
|
0.00 kg / 0.01 lbs
3 g / 0.0 N
|
0.02 kg / 0.04 lbs
~0 Gs
|
| 5 mm |
0.00 kg / 0.01 lbs
847 Gs
|
0.00 kg / 0.00 lbs
1 g / 0.0 N
|
0.00 kg / 0.00 lbs
~0 Gs
|
| 10 mm |
0.00 kg / 0.00 lbs
213 Gs
|
0.00 kg / 0.00 lbs
0 g / 0.0 N
|
0.00 kg / 0.00 lbs
~0 Gs
|
| 20 mm |
0.00 kg / 0.00 lbs
46 Gs
|
0.00 kg / 0.00 lbs
0 g / 0.0 N
|
0.00 kg / 0.00 lbs
~0 Gs
|
| 50 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
|
| 60 mm |
0.00 kg / 0.00 lbs
3 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
2 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
1 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
1 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
1 Gs
|
0.00 kg / 0.00 lbs
0 g / 0.0 N
|
0.00 kg / 0.00 lbs
~0 Gs
|
Table 7: Hazards (implants) - precautionary measures
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 |
| Mobile device | 40 Gs (4.0 mT) | 1.0 cm |
| Car key | 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: Dynamics (kinetic energy) - warning
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: Corrosion resistance
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: Construction 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: Submerged application
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. Shear force
*Caution: On a vertical surface, the magnet holds just approx. 20-30% of its perpendicular strength.
2. Plate thickness effect
*Thin metal sheet (e.g. 0.5mm PC case) significantly reduces the holding force.
3. Thermal stability
*For N38 material, the critical limit is 80°C.
4. Demagnetization curve and operating point (B-H)
chart generated for the permeance coefficient Pc (Permeance Coefficient) = 1.55
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.
Chemical composition
| 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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Strengths as well as weaknesses of neodymium magnets.
Benefits
- Their magnetic field is durable, and after around ten years it drops only by ~1% (according to research),
- They feature excellent resistance to magnetism drop as a result of opposing magnetic fields,
- Thanks to the reflective finish, the coating of Ni-Cu-Ni, gold-plated, or silver-plated gives an modern appearance,
- Magnetic induction on the top side of the magnet remains very high,
- Thanks to resistance to high temperature, they can operate (depending on the form) even at temperatures up to 230°C and higher...
- Thanks to flexibility in constructing and the capacity to modify to unusual requirements,
- Fundamental importance in advanced technology sectors – they are commonly used in computer drives, brushless drives, precision medical tools, and complex engineering applications.
- Thanks to concentrated force, small magnets offer high operating force, occupying minimum space,
Disadvantages
- Susceptibility to cracking is one of their disadvantages. Upon intense impact they can fracture. We recommend keeping them in a strong case, which not only secures them against impacts but also increases their durability
- When exposed to high temperature, neodymium magnets suffer a drop in strength. Often, when the temperature exceeds 80°C, their power 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
- They rust in a humid environment - during use outdoors we advise using waterproof magnets e.g. in rubber, plastic
- Limited possibility of making threads in the magnet and complicated shapes - recommended is casing - magnet mounting.
- Potential hazard resulting from small fragments of magnets pose a threat, if swallowed, which is particularly important in the context of child health protection. Furthermore, small components of these products can be problematic in diagnostics medical when they are in the body.
- With large orders the cost of neodymium magnets can be a barrier,
Pull force analysis
Maximum lifting capacity of the magnet – what contributes to it?
- using a base made of mild steel, functioning as a circuit closing element
- whose transverse dimension is min. 10 mm
- with an ground touching surface
- under conditions of no distance (metal-to-metal)
- during detachment in a direction perpendicular to the mounting surface
- at conditions approx. 20°C
What influences lifting capacity in practice
- Air gap (between the magnet and the plate), as even a microscopic distance (e.g. 0.5 mm) leads to a decrease in force by up to 50% (this also applies to paint, corrosion or debris).
- Load vector – maximum parameter is obtained only during pulling at a 90° angle. The shear force of the magnet along the surface is typically several times smaller (approx. 1/5 of the lifting capacity).
- Base massiveness – insufficiently thick plate causes magnetic saturation, causing part of the flux to be lost into the air.
- Material composition – different alloys reacts the same. High carbon content worsen the interaction with the magnet.
- Plate texture – ground elements guarantee perfect abutment, which increases field saturation. Uneven metal reduce efficiency.
- Heat – neodymium magnets have a negative temperature coefficient. At higher temperatures they lose power, and in frost gain strength (up to a certain limit).
Holding force was tested on a smooth steel plate of 20 mm thickness, when a perpendicular force was applied, in contrast under shearing force the lifting capacity is smaller. Moreover, even a minimal clearance between the magnet and the plate reduces the lifting capacity.
H&S for magnets
Medical interference
Patients with a pacemaker must keep an absolute distance from magnets. The magnetism can interfere with the functioning of the implant.
Electronic devices
Powerful magnetic fields can destroy records on credit cards, HDDs, and other magnetic media. Maintain a gap of at least 10 cm.
Bone fractures
Pinching hazard: The pulling power is so great that it can result in hematomas, pinching, and broken bones. Protective gloves are recommended.
Eye protection
Despite metallic appearance, the material is brittle and cannot withstand shocks. Avoid impacts, as the magnet may crumble into hazardous fragments.
GPS Danger
Remember: rare earth magnets generate a field that interferes with precision electronics. Maintain a separation from your mobile, tablet, and navigation systems.
Swallowing risk
NdFeB magnets are not intended for children. Swallowing a few magnets may result in them pinching intestinal walls, which poses a direct threat to life and necessitates immediate surgery.
Nickel coating and allergies
It is widely known that nickel (standard magnet coating) is a potent allergen. If your skin reacts to metals, avoid direct skin contact and choose encased magnets.
Do not underestimate power
Before starting, check safety instructions. Uncontrolled attraction can destroy the magnet or hurt your hand. Think ahead.
Fire risk
Combustion risk: Neodymium dust is highly flammable. Do not process magnets without safety gear as this risks ignition.
Heat warning
Standard neodymium magnets (grade N) undergo demagnetization when the temperature goes above 80°C. Damage is permanent.
