MW 6x2 / N38 - cylindrical magnet
cylindrical magnet
Catalog no 010092
GTIN/EAN: 5906301810919
- Diameter Ø
- 6 mm [±0,1 mm]
- Height
- 2 mm [±0,1 mm]
- Weight
- 0.42 g
- Magnetization Direction
- ↑ axial
- Coating
- [NiCuNi] Nickel
How we measure these parameters — certificates and measurements
0.200 zł net / pcs
0.246 zł with VAT (23% VAT) / pcs
bulk discounts:
Need more?Frequently asked questions
What is the maximum working temperature of a disc magnet?
What is the difference between N38, N42 and N52?
What is the dimensional tolerance?
Engineering report for this magnet
Full PDF analysis: pull and shear force, effect of distance, temperature and plate thickness, safety distances and the demagnetization curve.
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Product card - MW 6x2 / N38 - cylindrical magnet
Specification / characteristics - MW 6x2 / N38 - cylindrical magnet
| properties | values |
|---|---|
| Cat. no. | 010092 |
| GTIN/EAN | 5906301810919 |
| Production/Distribution | Dhit sp. z o.o. |
| Country of origin | Poland / China / Germany |
| Customs code | 85059029 |
| Diameter Ø | 6 mm [±0,1 mm] |
| Height | 2 mm [±0,1 mm] |
| Weight | 0.42 g |
| Magnetization Direction | ↑ axial |
| Load capacity ~ ? | 0.86 kg / 8.43 N |
| Magnetic Induction ~ ? | 343.37 mT / 3434 Gs |
| Coating | [NiCuNi] Nickel |
| Manufacturing Tolerance | ±0.1 mm |
Magnetic properties of material N38
| properties | values | units |
|---|---|---|
| Remanence Br ? | 12.2-12.6 | kGs |
| Remanence Br ? | 1220-1260 | mT |
| Coercivity bHc ? | 10.8-11.5 | kOe |
| Coercivity bHc ? | 860-915 | kA/m |
| Intrinsic coercivity iHc | ≥ 12 | kOe |
| Intrinsic coercivity iHc | ≥ 955 | kA/m |
| Energy product BHmax ? | 36-38 | BH max MGOe |
| Energy product BHmax ? | 287-303 | BH max KJ/m |
| Maximum working 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 | 310 | °C |
| Curie Temperature TF | 590 | °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 simulation of the magnet - report
The following data represent the outcome of a physical simulation. Results were calculated on models for the material Nd2Fe14B. Actual performance might slightly differ. Please consider these data as a supplementary guide for designers.
Table 1: Static pull force (pull vs gap) - power drop
MW 6x2 / N38
| Distance (mm) | Induction (Gauss) / mT | Pull Force (kg/lbs/g/N) | Risk Status |
|---|---|---|---|
| 0 mm |
3430 Gs
343.0 mT
|
0.86 kg / 1.90 LBS
860.0 g / 8.4 N
|
safe |
| 1 mm |
2423 Gs
242.3 mT
|
0.43 kg / 0.95 LBS
429.2 g / 4.2 N
|
safe |
| 2 mm |
1521 Gs
152.1 mT
|
0.17 kg / 0.37 LBS
169.0 g / 1.7 N
|
safe |
| 3 mm |
932 Gs
93.2 mT
|
0.06 kg / 0.14 LBS
63.5 g / 0.6 N
|
safe |
| 5 mm |
382 Gs
38.2 mT
|
0.01 kg / 0.02 LBS
10.7 g / 0.1 N
|
safe |
| 10 mm |
76 Gs
7.6 mT
|
0.00 kg / 0.00 LBS
0.4 g / 0.0 N
|
safe |
| 15 mm |
26 Gs
2.6 mT
|
0.00 kg / 0.00 LBS
0.0 g / 0.0 N
|
safe |
| 20 mm |
12 Gs
1.2 mT
|
0.00 kg / 0.00 LBS
0.0 g / 0.0 N
|
safe |
| 30 mm |
4 Gs
0.4 mT
|
0.00 kg / 0.00 LBS
0.0 g / 0.0 N
|
safe |
| 50 mm |
1 Gs
0.1 mT
|
0.00 kg / 0.00 LBS
0.0 g / 0.0 N
|
safe |
Table 2: Slippage force (vertical surface)
MW 6x2 / N38
| Distance (mm) | Friction coefficient | Pull Force (kg/lbs/g/N) |
|---|---|---|
| 0 mm | Stal (~0.2) |
0.17 kg / 0.38 LBS
172.0 g / 1.7 N
|
| 1 mm | Stal (~0.2) |
0.09 kg / 0.19 LBS
86.0 g / 0.8 N
|
| 2 mm | Stal (~0.2) |
0.03 kg / 0.07 LBS
34.0 g / 0.3 N
|
| 3 mm | Stal (~0.2) |
0.01 kg / 0.03 LBS
12.0 g / 0.1 N
|
| 5 mm | Stal (~0.2) |
0.00 kg / 0.00 LBS
2.0 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 6x2 / N38
| Surface type | Friction coefficient / % Mocy | Max load (kg/lbs/g/N) |
|---|---|---|
| Raw steel |
µ = 0.3
30% Nominalnej Siły
|
0.26 kg / 0.57 LBS
258.0 g / 2.5 N
|
| Painted steel (standard) |
µ = 0.2
20% Nominalnej Siły
|
0.17 kg / 0.38 LBS
172.0 g / 1.7 N
|
| Oily/slippery steel |
µ = 0.1
10% Nominalnej Siły
|
0.09 kg / 0.19 LBS
86.0 g / 0.8 N
|
| Magnet with anti-slip rubber |
µ = 0.5
50% Nominalnej Siły
|
0.43 kg / 0.95 LBS
430.0 g / 4.2 N
|
Table 4: Material efficiency (saturation) - power losses
MW 6x2 / N38
| Steel thickness (mm) | % power | Real pull force (kg/lbs/g/N) |
|---|---|---|
| 0.5 mm |
|
0.09 kg / 0.19 LBS
86.0 g / 0.8 N
|
| 1 mm |
|
0.22 kg / 0.47 LBS
215.0 g / 2.1 N
|
| 2 mm |
|
0.43 kg / 0.95 LBS
430.0 g / 4.2 N
|
| 3 mm |
|
0.65 kg / 1.42 LBS
645.0 g / 6.3 N
|
| 5 mm |
|
0.86 kg / 1.90 LBS
860.0 g / 8.4 N
|
| 10 mm |
|
0.86 kg / 1.90 LBS
860.0 g / 8.4 N
|
| 11 mm |
|
0.86 kg / 1.90 LBS
860.0 g / 8.4 N
|
| 12 mm |
|
0.86 kg / 1.90 LBS
860.0 g / 8.4 N
|
Table 5: Thermal stability (stability) - resistance threshold
MW 6x2 / N38
| Ambient temp. (°C) | Power loss | Remaining pull (kg/lbs/g/N) | Status |
|---|---|---|---|
| 20 °C | 0.0% |
0.86 kg / 1.90 LBS
860.0 g / 8.4 N
|
OK |
| 40 °C | -2.2% |
0.84 kg / 1.85 LBS
841.1 g / 8.3 N
|
OK |
| 60 °C | -4.4% |
0.82 kg / 1.81 LBS
822.2 g / 8.1 N
|
|
| 80 °C | -6.6% |
0.80 kg / 1.77 LBS
803.2 g / 7.9 N
|
|
| 100 °C | -28.8% |
0.61 kg / 1.35 LBS
612.3 g / 6.0 N
|
Table 6: Magnet-Magnet interaction (repulsion) - field range
MW 6x2 / N38
| Gap (mm) | Attraction (kg/lbs) (N-S) | Sliding Force (kg/lbs/g/N) | Repulsion (kg/lbs) (N-N) |
|---|---|---|---|
| 0 mm |
2.05 kg / 4.52 LBS
4 944 Gs
|
0.31 kg / 0.68 LBS
308 g / 3.0 N
|
N/A |
| 1 mm |
1.52 kg / 3.34 LBS
5 900 Gs
|
0.23 kg / 0.50 LBS
228 g / 2.2 N
|
1.37 kg / 3.01 LBS
~0 Gs
|
| 2 mm |
1.02 kg / 2.26 LBS
4 847 Gs
|
0.15 kg / 0.34 LBS
154 g / 1.5 N
|
0.92 kg / 2.03 LBS
~0 Gs
|
| 3 mm |
0.65 kg / 1.44 LBS
3 869 Gs
|
0.10 kg / 0.22 LBS
98 g / 1.0 N
|
0.59 kg / 1.29 LBS
~0 Gs
|
| 5 mm |
0.25 kg / 0.54 LBS
2 379 Gs
|
0.04 kg / 0.08 LBS
37 g / 0.4 N
|
0.22 kg / 0.49 LBS
~0 Gs
|
| 10 mm |
0.03 kg / 0.06 LBS
764 Gs
|
0.00 kg / 0.01 LBS
4 g / 0.0 N
|
0.02 kg / 0.05 LBS
~0 Gs
|
| 20 mm |
0.00 kg / 0.00 LBS
153 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
12 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
7 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
5 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
3 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
2 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
2 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 6x2 / N38
| Object / Device | Limit (Gauss) / mT | Safe distance |
|---|---|---|
| Pacemaker | 5 Gs (0.5 mT) | 3.0 cm |
| Hearing aid | 10 Gs (1.0 mT) | 2.5 cm |
| Mechanical watch | 20 Gs (2.0 mT) | 2.0 cm |
| Phone / Smartphone | 40 Gs (4.0 mT) | 1.5 cm |
| Car key | 50 Gs (5.0 mT) | 1.5 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) - collision effects
MW 6x2 / N38
| Start from (mm) | Speed (km/h) | Energy (J) | Predicted outcome |
|---|---|---|---|
| 10 mm |
25.83 km/h
(7.17 m/s)
|
0.01 J | |
| 30 mm |
25.84 km/h
(7.18 m/s)
|
0.01 J | |
| 50 mm |
25.84 km/h
(7.18 m/s)
|
0.01 J | |
| 100 mm |
25.84 km/h
(7.18 m/s)
|
0.01 J |
Table 9: Coating parameters (durability)
MW 6x2 / 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 6x2 / N38
| Parameter | Value | SI Unit / Description |
|---|---|---|
| Magnetic Flux | 1 029 Mx | 10.3 µWb |
| Pc Coefficient | 0.44 | Low (Flat) |
Table 11: Underwater work (magnet fishing)
MW 6x2 / N38
| Environment | Effective steel pull | Effect |
|---|---|---|
| Air (land) | 0.86 kg | Standard |
| Water (riverbed) |
0.98 kg
(+0.12 kg buoyancy gain)
|
+14.5% |
1. Wall mount (shear)
*Note: On a vertical wall, the magnet retains just ~20% of its perpendicular strength.
2. Plate thickness effect
*Thin metal sheet (e.g. computer case) severely limits the holding force.
3. Power loss vs temp
*For N38 grade, the critical limit is 80°C.
4. Demagnetization curve and operating point (B-H)
chart generated for the permeance coefficient Pc (Permeance Coefficient) = 0.44
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.
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% |
Sustainability
| recyclability (EoL) | 100% |
| recycled raw materials | ~10% (pre-cons) |
| carbon footprint | low / zredukowany |
| waste code (EWC) | 16 02 16 |
Other products
Strengths and weaknesses of Nd2Fe14B magnets.
Benefits
- They have unchanged lifting capacity, and over around 10 years their attraction force decreases symbolically – ~1% (in testing),
- Neodymium magnets prove to be remarkably resistant to loss of magnetic properties caused by external magnetic fields,
- In other words, due to the shiny finish of silver, the element is aesthetically pleasing,
- The surface of neodymium magnets generates a concentrated magnetic field – this is a key feature,
- Thanks to resistance to high temperature, they are capable of working (depending on the form) even at temperatures up to 230°C and higher...
- Possibility of precise modeling as well as adapting to complex conditions,
- Wide application in advanced technology sectors – they are commonly used in computer drives, electric motors, medical devices, also multitasking production systems.
- Compactness – despite small sizes they provide effective action, making them ideal for precision applications
Limitations
- To avoid cracks upon strong impacts, we recommend using special steel holders. Such a solution protects the magnet and simultaneously improves its durability.
- Neodymium magnets demagnetize when exposed to high temperatures. After reaching 80°C, many of them experience permanent drop of power (a factor is the shape as well as dimensions of the magnet). We offer magnets specially adapted to work at temperatures up to 230°C marked [AH], which are very resistant to heat
- They rust in a humid environment. For use outdoors we suggest using waterproof magnets e.g. in rubber, plastic
- We suggest a housing - magnetic mount, due to difficulties in creating nuts inside the magnet and complex forms.
- Potential hazard resulting from small fragments of magnets are risky, in case of ingestion, which is particularly important in the context of child safety. Furthermore, small components of these devices are able to disrupt the diagnostic process medical in case of swallowing.
- With budget limitations the cost of neodymium magnets is economically unviable,
Holding force characteristics
Highest magnetic holding force – what it depends on?
- using a base made of mild steel, functioning as a circuit closing element
- with a thickness no less than 10 mm
- characterized by smoothness
- under conditions of gap-free contact (surface-to-surface)
- under vertical force vector (90-degree angle)
- at temperature room level
Practical lifting capacity: influencing factors
- Air gap (betwixt the magnet and the metal), because even a very small clearance (e.g. 0.5 mm) leads to a decrease in force by up to 50% (this also applies to varnish, rust or debris).
- Force direction – declared lifting capacity refers to detachment vertically. When slipping, the magnet holds much less (typically approx. 20-30% of nominal force).
- Wall thickness – thin material does not allow full use of the magnet. Part of the magnetic field passes through the material instead of generating force.
- Chemical composition of the base – low-carbon steel gives the best results. Alloy admixtures lower magnetic properties and holding force.
- Surface condition – ground elements ensure maximum contact, which increases force. Rough surfaces weaken the grip.
- Thermal conditions – neodymium magnets have a negative temperature coefficient. At higher temperatures they lose power, and at low temperatures gain strength (up to a certain limit).
Holding force was measured on a smooth steel plate of 20 mm thickness, when a perpendicular force was applied, however under attempts to slide the magnet the load capacity is reduced by as much as fivefold. In addition, even a slight gap between the magnet and the plate reduces the lifting capacity.
Precautions when working with neodymium magnets
Threat to navigation
Navigation devices and smartphones are extremely sensitive to magnetism. Direct contact with a powerful NdFeB magnet can ruin the sensors in your phone.
Keep away from computers
Very strong magnetic fields can corrupt files on payment cards, hard drives, and storage devices. Stay away of at least 10 cm.
Protective goggles
NdFeB magnets are ceramic materials, meaning they are prone to chipping. Collision of two magnets leads to them breaking into small pieces.
Allergic reactions
Certain individuals have a sensitization to Ni, which is the standard coating for NdFeB magnets. Frequent touching might lead to skin redness. We suggest wear protective gloves.
This is not a toy
These products are not intended for children. Swallowing several magnets can lead to them connecting inside the digestive tract, which constitutes a direct threat to life and requires immediate surgery.
Life threat
Life threat: Strong magnets can turn off pacemakers and defibrillators. Do not approach if you have medical devices.
Dust is flammable
Fire warning: Rare earth powder is highly flammable. Do not process magnets in home conditions as this may cause fire.
Crushing force
Risk of injury: The attraction force is so great that it can cause blood blisters, pinching, and broken bones. Protective gloves are recommended.
Do not overheat magnets
Regular neodymium magnets (N-type) undergo demagnetization when the temperature goes above 80°C. The loss of strength is permanent.
Do not underestimate power
Before use, check safety instructions. Uncontrolled attraction can break the magnet or injure your hand. Think ahead.
