MW 6x3 / N38 - cylindrical magnet
cylindrical magnet
Catalog no 010093
GTIN/EAN: 5906301810926
Diameter Ø
6 mm [±0,1 mm]
Height
3 mm [±0,1 mm]
Weight
0.64 g
Magnetization Direction
↑ axial
Load capacity
1.15 kg / 11.23 N
Magnetic Induction
437.58 mT / 4376 Gs
Coating
[NiCuNi] Nickel
0.381 ZŁ with VAT / pcs + price for transport
0.310 ZŁ net + 23% VAT / pcs
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Technical details - MW 6x3 / N38 - cylindrical magnet
Specification / characteristics - MW 6x3 / N38 - cylindrical magnet
| properties | values |
|---|---|
| Cat. no. | 010093 |
| GTIN/EAN | 5906301810926 |
| Production/Distribution | Dhit sp. z o.o. |
| Country of origin | Poland / China / Germany |
| Customs code | 85059029 |
| Diameter Ø | 6 mm [±0,1 mm] |
| Height | 3 mm [±0,1 mm] |
| Weight | 0.64 g |
| Magnetization Direction | ↑ axial |
| Load capacity ~ ? | 1.15 kg / 11.23 N |
| Magnetic Induction ~ ? | 437.58 mT / 4376 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 - report
The following data are the outcome of a engineering calculation. Results are based on models for the class Nd2Fe14B. Operational performance may differ from theoretical values. Treat these calculations as a preliminary roadmap during assembly planning.
Table 1: Static pull force (pull vs distance) - characteristics
MW 6x3 / N38
| Distance (mm) | Induction (Gauss) / mT | Pull Force (kg/lbs/g/N) | Risk Status |
|---|---|---|---|
| 0 mm |
4371 Gs
437.1 mT
|
1.15 kg / 2.54 lbs
1150.0 g / 11.3 N
|
safe |
| 1 mm |
2999 Gs
299.9 mT
|
0.54 kg / 1.19 lbs
541.6 g / 5.3 N
|
safe |
| 2 mm |
1877 Gs
187.7 mT
|
0.21 kg / 0.47 lbs
212.2 g / 2.1 N
|
safe |
| 3 mm |
1161 Gs
116.1 mT
|
0.08 kg / 0.18 lbs
81.2 g / 0.8 N
|
safe |
| 5 mm |
489 Gs
48.9 mT
|
0.01 kg / 0.03 lbs
14.4 g / 0.1 N
|
safe |
| 10 mm |
103 Gs
10.3 mT
|
0.00 kg / 0.00 lbs
0.6 g / 0.0 N
|
safe |
| 15 mm |
36 Gs
3.6 mT
|
0.00 kg / 0.00 lbs
0.1 g / 0.0 N
|
safe |
| 20 mm |
17 Gs
1.7 mT
|
0.00 kg / 0.00 lbs
0.0 g / 0.0 N
|
safe |
| 30 mm |
5 Gs
0.5 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 load (vertical surface)
MW 6x3 / N38
| Distance (mm) | Friction coefficient | Pull Force (kg/lbs/g/N) |
|---|---|---|
| 0 mm | Stal (~0.2) |
0.23 kg / 0.51 lbs
230.0 g / 2.3 N
|
| 1 mm | Stal (~0.2) |
0.11 kg / 0.24 lbs
108.0 g / 1.1 N
|
| 2 mm | Stal (~0.2) |
0.04 kg / 0.09 lbs
42.0 g / 0.4 N
|
| 3 mm | Stal (~0.2) |
0.02 kg / 0.04 lbs
16.0 g / 0.2 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: Vertical assembly (shearing) - vertical pull
MW 6x3 / N38
| Surface type | Friction coefficient / % Mocy | Max load (kg/lbs/g/N) |
|---|---|---|
| Raw steel |
µ = 0.3
30% Nominalnej Siły
|
0.35 kg / 0.76 lbs
345.0 g / 3.4 N
|
| Painted steel (standard) |
µ = 0.2
20% Nominalnej Siły
|
0.23 kg / 0.51 lbs
230.0 g / 2.3 N
|
| Oily/slippery steel |
µ = 0.1
10% Nominalnej Siły
|
0.11 kg / 0.25 lbs
115.0 g / 1.1 N
|
| Magnet with anti-slip rubber |
µ = 0.5
50% Nominalnej Siły
|
0.58 kg / 1.27 lbs
575.0 g / 5.6 N
|
Table 4: Material efficiency (saturation) - power losses
MW 6x3 / N38
| Steel thickness (mm) | % power | Real pull force (kg/lbs/g/N) |
|---|---|---|
| 0.5 mm |
|
0.11 kg / 0.25 lbs
115.0 g / 1.1 N
|
| 1 mm |
|
0.29 kg / 0.63 lbs
287.5 g / 2.8 N
|
| 2 mm |
|
0.58 kg / 1.27 lbs
575.0 g / 5.6 N
|
| 3 mm |
|
0.86 kg / 1.90 lbs
862.5 g / 8.5 N
|
| 5 mm |
|
1.15 kg / 2.54 lbs
1150.0 g / 11.3 N
|
| 10 mm |
|
1.15 kg / 2.54 lbs
1150.0 g / 11.3 N
|
| 11 mm |
|
1.15 kg / 2.54 lbs
1150.0 g / 11.3 N
|
| 12 mm |
|
1.15 kg / 2.54 lbs
1150.0 g / 11.3 N
|
Table 5: Thermal resistance (stability) - resistance threshold
MW 6x3 / N38
| Ambient temp. (°C) | Power loss | Remaining pull (kg/lbs/g/N) | Status |
|---|---|---|---|
| 20 °C | 0.0% |
1.15 kg / 2.54 lbs
1150.0 g / 11.3 N
|
OK |
| 40 °C | -2.2% |
1.12 kg / 2.48 lbs
1124.7 g / 11.0 N
|
OK |
| 60 °C | -4.4% |
1.10 kg / 2.42 lbs
1099.4 g / 10.8 N
|
|
| 80 °C | -6.6% |
1.07 kg / 2.37 lbs
1074.1 g / 10.5 N
|
|
| 100 °C | -28.8% |
0.82 kg / 1.81 lbs
818.8 g / 8.0 N
|
Table 6: Two magnets (attraction) - field range
MW 6x3 / N38
| Gap (mm) | Attraction (kg/lbs) (N-S) | Lateral Force (kg/lbs/g/N) | Repulsion (kg/lbs) (N-N) |
|---|---|---|---|
| 0 mm |
3.33 kg / 7.34 lbs
5 527 Gs
|
0.50 kg / 1.10 lbs
499 g / 4.9 N
|
N/A |
| 1 mm |
2.37 kg / 5.23 lbs
7 376 Gs
|
0.36 kg / 0.78 lbs
356 g / 3.5 N
|
2.13 kg / 4.70 lbs
~0 Gs
|
| 2 mm |
1.57 kg / 3.46 lbs
5 999 Gs
|
0.24 kg / 0.52 lbs
235 g / 2.3 N
|
1.41 kg / 3.11 lbs
~0 Gs
|
| 3 mm |
0.99 kg / 2.19 lbs
4 772 Gs
|
0.15 kg / 0.33 lbs
149 g / 1.5 N
|
0.89 kg / 1.97 lbs
~0 Gs
|
| 5 mm |
0.38 kg / 0.83 lbs
2 948 Gs
|
0.06 kg / 0.13 lbs
57 g / 0.6 N
|
0.34 kg / 0.75 lbs
~0 Gs
|
| 10 mm |
0.04 kg / 0.09 lbs
978 Gs
|
0.01 kg / 0.01 lbs
6 g / 0.1 N
|
0.04 kg / 0.08 lbs
~0 Gs
|
| 20 mm |
0.00 kg / 0.00 lbs
205 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
18 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
11 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
7 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
5 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
3 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: Safety (HSE) (implants) - warnings
MW 6x3 / N38
| Object / Device | Limit (Gauss) / mT | Safe distance |
|---|---|---|
| Pacemaker | 5 Gs (0.5 mT) | 3.5 cm |
| Hearing aid | 10 Gs (1.0 mT) | 2.5 cm |
| Mechanical watch | 20 Gs (2.0 mT) | 2.0 cm |
| Mobile device | 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) | 1.0 cm |
| HDD hard drive | 600 Gs (60.0 mT) | 0.5 cm |
Table 8: Impact energy (cracking risk) - collision effects
MW 6x3 / N38
| Start from (mm) | Speed (km/h) | Energy (J) | Predicted outcome |
|---|---|---|---|
| 10 mm |
42.77 km/h
(11.88 m/s)
|
0.05 J | |
| 30 mm |
74.05 km/h
(20.57 m/s)
|
0.14 J | |
| 50 mm |
95.59 km/h
(26.55 m/s)
|
0.23 J | |
| 100 mm |
135.19 km/h
(37.55 m/s)
|
0.45 J |
Table 9: Surface protection spec
MW 6x3 / 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 6x3 / N38
| Parameter | Value | SI Unit / Description |
|---|---|---|
| Magnetic Flux | 1 256 Mx | 12.6 µWb |
| Pc Coefficient | 0.59 | Low (Flat) |
Table 11: Submerged application
MW 6x3 / N38
| Environment | Effective steel pull | Effect |
|---|---|---|
| Air (land) | 1.15 kg | Standard |
| Water (riverbed) |
1.32 kg
(+0.17 kg buoyancy gain)
|
+14.5% |
1. Shear force
*Note: On a vertical wall, the magnet retains only ~20% of its max power.
2. Steel thickness impact
*Thin metal sheet (e.g. 0.5mm PC case) severely weakens the holding force.
3. Power loss vs temp
*For N38 material, the max working temp is 80°C.
4. Demagnetization curve and operating point (B-H)
chart generated for the permeance coefficient Pc (Permeance Coefficient) = 0.59
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.
Material specification
| 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 |
Other products
Strengths and weaknesses of rare earth magnets.
Strengths
- They retain magnetic properties for around ten years – the loss is just ~1% (based on simulations),
- They feature excellent resistance to magnetism drop due to external magnetic sources,
- By using a smooth layer of gold, the element has an professional look,
- Neodymium magnets create maximum magnetic induction on a their surface, which ensures high operational effectiveness,
- Thanks to resistance to high temperature, they can operate (depending on the shape) even at temperatures up to 230°C and higher...
- Thanks to the ability of flexible molding and adaptation to specialized projects, magnetic components can be manufactured in a variety of forms and dimensions, which increases their versatility,
- Key role in high-tech industry – they are used in mass storage devices, motor assemblies, medical equipment, also complex engineering applications.
- Compactness – despite small sizes they provide effective action, making them ideal for precision applications
Cons
- Susceptibility to cracking is one of their disadvantages. Upon intense impact they can break. We recommend keeping them in a special holder, which not only secures them against impacts but also increases their durability
- Neodymium magnets lose their force under the influence of heating. As soon as 80°C is exceeded, many of them start losing their power. Therefore, we recommend our special magnets marked [AH], which maintain stability even at temperatures up to 230°C
- When exposed to humidity, magnets usually rust. To use them in conditions outside, it is recommended to use protective magnets, such as those in rubber or plastics, which prevent oxidation as well as corrosion.
- Limited possibility of creating threads in the magnet and complicated forms - preferred is a housing - magnet mounting.
- Health risk to health – tiny shards of magnets can be dangerous, if swallowed, which becomes key in the aspect of protecting the youngest. Additionally, tiny parts of these products are able to be problematic in diagnostics medical after entering the body.
- Higher cost of purchase is a significant factor to consider compared to ceramic magnets, especially in budget applications
Lifting parameters
Detachment force of the magnet in optimal conditions – what it depends on?
- on a plate made of mild steel, optimally conducting the magnetic flux
- with a thickness of at least 10 mm
- with an ideally smooth touching surface
- with direct contact (no coatings)
- under vertical force direction (90-degree angle)
- at conditions approx. 20°C
Impact of factors on magnetic holding capacity in practice
- Gap between magnet and steel – even a fraction of a millimeter of separation (caused e.g. by varnish or dirt) diminishes the pulling force, often by half at just 0.5 mm.
- Force direction – remember that the magnet has greatest strength perpendicularly. Under sliding down, the holding force drops drastically, often to levels of 20-30% of the nominal value.
- Plate thickness – insufficiently thick steel does not close the flux, causing part of the power to be lost to the other side.
- Material composition – not every steel attracts identically. High carbon content worsen the interaction with the magnet.
- Surface structure – the smoother and more polished the surface, the better the adhesion and stronger the hold. Unevenness acts like micro-gaps.
- Thermal environment – temperature increase 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%. Additionally, even a minimal clearance between the magnet and the plate decreases the lifting capacity.
Warnings
Warning for heart patients
Warning for patients: Powerful magnets disrupt electronics. Keep at least 30 cm distance or ask another person to work with the magnets.
Nickel allergy
Allergy Notice: The Ni-Cu-Ni coating consists of nickel. If an allergic reaction happens, cease handling magnets and use protective gear.
Magnetic media
Avoid bringing magnets near a purse, laptop, or TV. The magnetic field can permanently damage these devices and erase data from cards.
Crushing force
Danger of trauma: The attraction force is so great that it can cause hematomas, pinching, and even bone fractures. Protective gloves are recommended.
Danger to the youngest
Neodymium magnets are not intended for children. Accidental ingestion of a few magnets can lead to them pinching intestinal walls, which constitutes a severe health hazard and requires immediate surgery.
Handling rules
Be careful. Rare earth magnets act from a long distance and snap with massive power, often faster than you can react.
Do not drill into magnets
Powder created during grinding of magnets is flammable. Avoid drilling into magnets unless you are an expert.
Beware of splinters
Neodymium magnets are sintered ceramics, which means they are prone to chipping. Impact of two magnets leads to them shattering into shards.
Demagnetization risk
Standard neodymium magnets (N-type) lose magnetization when the temperature surpasses 80°C. The loss of strength is permanent.
Threat to navigation
Note: neodymium magnets produce a field that confuses precision electronics. Maintain a safe distance from your mobile, device, and navigation systems.
