MW 6x6 / N38 - cylindrical magnet
cylindrical magnet
Catalog no 010094
GTIN/EAN: 5906301810933
Diameter Ø
6 mm [±0,1 mm]
Height
6 mm [±0,1 mm]
Weight
1.27 g
Magnetization Direction
↑ axial
Load capacity
1.14 kg / 11.18 N
Magnetic Induction
553.38 mT / 5534 Gs
Coating
[NiCuNi] Nickel
0.677 ZŁ with VAT / pcs + price for transport
0.550 ZŁ net + 23% VAT / pcs
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Detailed specifications MW 6x6 / N38 - cylindrical magnet
Specification / characteristics - MW 6x6 / N38 - cylindrical magnet
| properties | values |
|---|---|
| Cat. no. | 010094 |
| GTIN/EAN | 5906301810933 |
| Production/Distribution | Dhit sp. z o.o. |
| Country of origin | Poland / China / Germany |
| Customs code | 85059029 |
| Diameter Ø | 6 mm [±0,1 mm] |
| Height | 6 mm [±0,1 mm] |
| Weight | 1.27 g |
| Magnetization Direction | ↑ axial |
| Load capacity ~ ? | 1.14 kg / 11.18 N |
| Magnetic Induction ~ ? | 553.38 mT / 5534 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 |
Engineering analysis of the product - report
Presented data constitute the direct effect of a mathematical simulation. Results were calculated on models for the material Nd2Fe14B. Operational conditions may deviate from the simulation results. Use these data as a supplementary guide for designers.
Table 1: Static pull force (pull vs distance) - power drop
MW 6x6 / N38
| Distance (mm) | Induction (Gauss) / mT | Pull Force (kg) | Risk Status |
|---|---|---|---|
| 0 mm |
5527 Gs
552.7 mT
|
1.14 kg / 1140.0 g
11.2 N
|
low risk |
| 1 mm |
3738 Gs
373.8 mT
|
0.52 kg / 521.5 g
5.1 N
|
low risk |
| 2 mm |
2366 Gs
236.6 mT
|
0.21 kg / 209.0 g
2.0 N
|
low risk |
| 3 mm |
1498 Gs
149.8 mT
|
0.08 kg / 83.7 g
0.8 N
|
low risk |
| 5 mm |
665 Gs
66.5 mT
|
0.02 kg / 16.5 g
0.2 N
|
low risk |
| 10 mm |
155 Gs
15.5 mT
|
0.00 kg / 0.9 g
0.0 N
|
low risk |
| 15 mm |
58 Gs
5.8 mT
|
0.00 kg / 0.1 g
0.0 N
|
low risk |
| 20 mm |
28 Gs
2.8 mT
|
0.00 kg / 0.0 g
0.0 N
|
low risk |
| 30 mm |
9 Gs
0.9 mT
|
0.00 kg / 0.0 g
0.0 N
|
low risk |
| 50 mm |
2 Gs
0.2 mT
|
0.00 kg / 0.0 g
0.0 N
|
low risk |
Table 2: Sliding load (vertical surface)
MW 6x6 / N38
| Distance (mm) | Friction coefficient | Pull Force (kg) |
|---|---|---|
| 0 mm | Stal (~0.2) |
0.23 kg / 228.0 g
2.2 N
|
| 1 mm | Stal (~0.2) |
0.10 kg / 104.0 g
1.0 N
|
| 2 mm | Stal (~0.2) |
0.04 kg / 42.0 g
0.4 N
|
| 3 mm | Stal (~0.2) |
0.02 kg / 16.0 g
0.2 N
|
| 5 mm | Stal (~0.2) |
0.00 kg / 4.0 g
0.0 N
|
| 10 mm | Stal (~0.2) |
0.00 kg / 0.0 g
0.0 N
|
| 15 mm | Stal (~0.2) |
0.00 kg / 0.0 g
0.0 N
|
| 20 mm | Stal (~0.2) |
0.00 kg / 0.0 g
0.0 N
|
| 30 mm | Stal (~0.2) |
0.00 kg / 0.0 g
0.0 N
|
| 50 mm | Stal (~0.2) |
0.00 kg / 0.0 g
0.0 N
|
Table 3: Vertical assembly (shearing) - behavior on slippery surfaces
MW 6x6 / N38
| Surface type | Friction coefficient / % Mocy | Max load (kg) |
|---|---|---|
| Raw steel |
µ = 0.3
30% Nominalnej Siły
|
0.34 kg / 342.0 g
3.4 N
|
| Painted steel (standard) |
µ = 0.2
20% Nominalnej Siły
|
0.23 kg / 228.0 g
2.2 N
|
| Oily/slippery steel |
µ = 0.1
10% Nominalnej Siły
|
0.11 kg / 114.0 g
1.1 N
|
| Magnet with anti-slip rubber |
µ = 0.5
50% Nominalnej Siły
|
0.57 kg / 570.0 g
5.6 N
|
Table 4: Material efficiency (saturation) - power losses
MW 6x6 / N38
| Steel thickness (mm) | % power | Real pull force (kg) |
|---|---|---|
| 0.5 mm |
|
0.11 kg / 114.0 g
1.1 N
|
| 1 mm |
|
0.29 kg / 285.0 g
2.8 N
|
| 2 mm |
|
0.57 kg / 570.0 g
5.6 N
|
| 5 mm |
|
1.14 kg / 1140.0 g
11.2 N
|
| 10 mm |
|
1.14 kg / 1140.0 g
11.2 N
|
Table 5: Working in heat (material behavior) - power drop
MW 6x6 / N38
| Ambient temp. (°C) | Power loss | Remaining pull | Status |
|---|---|---|---|
| 20 °C | 0.0% |
1.14 kg / 1140.0 g
11.2 N
|
OK |
| 40 °C | -2.2% |
1.11 kg / 1114.9 g
10.9 N
|
OK |
| 60 °C | -4.4% |
1.09 kg / 1089.8 g
10.7 N
|
OK |
| 80 °C | -6.6% |
1.06 kg / 1064.8 g
10.4 N
|
|
| 100 °C | -28.8% |
0.81 kg / 811.7 g
8.0 N
|
Table 6: Magnet-Magnet interaction (repulsion) - field collision
MW 6x6 / N38
| Gap (mm) | Attraction (kg) (N-S) | Repulsion (kg) (N-N) |
|---|---|---|
| 0 mm |
5.32 kg / 5324 g
52.2 N
5 995 Gs
|
N/A |
| 1 mm |
3.70 kg / 3705 g
36.3 N
9 220 Gs
|
3.33 kg / 3334 g
32.7 N
~0 Gs
|
| 2 mm |
2.44 kg / 2436 g
23.9 N
7 476 Gs
|
2.19 kg / 2192 g
21.5 N
~0 Gs
|
| 3 mm |
1.55 kg / 1552 g
15.2 N
5 968 Gs
|
1.40 kg / 1397 g
13.7 N
~0 Gs
|
| 5 mm |
0.61 kg / 614 g
6.0 N
3 755 Gs
|
0.55 kg / 553 g
5.4 N
~0 Gs
|
| 10 mm |
0.08 kg / 77 g
0.8 N
1 330 Gs
|
0.07 kg / 69 g
0.7 N
~0 Gs
|
| 20 mm |
0.00 kg / 4 g
0.0 N
311 Gs
|
0.00 kg / 0 g
0.0 N
~0 Gs
|
| 50 mm |
0.00 kg / 0 g
0.0 N
31 Gs
|
0.00 kg / 0 g
0.0 N
~0 Gs
|
Table 7: Protective zones (electronics) - warnings
MW 6x6 / N38
| Object / Device | Limit (Gauss) / mT | Safe distance |
|---|---|---|
| Pacemaker | 5 Gs (0.5 mT) | 4.0 cm |
| Hearing aid | 10 Gs (1.0 mT) | 3.0 cm |
| Timepiece | 20 Gs (2.0 mT) | 2.5 cm |
| Phone / Smartphone | 40 Gs (4.0 mT) | 2.0 cm |
| Remote | 50 Gs (5.0 mT) | 2.0 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 (kinetic energy) - warning
MW 6x6 / N38
| Start from (mm) | Speed (km/h) | Energy (J) | Predicted outcome |
|---|---|---|---|
| 10 mm |
30.23 km/h
(8.40 m/s)
|
0.04 J | |
| 30 mm |
52.34 km/h
(14.54 m/s)
|
0.13 J | |
| 50 mm |
67.56 km/h
(18.77 m/s)
|
0.22 J | |
| 100 mm |
95.55 km/h
(26.54 m/s)
|
0.45 J |
Table 9: Coating parameters (durability)
MW 6x6 / 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 (Flux)
MW 6x6 / N38
| Parameter | Value | SI Unit / Description |
|---|---|---|
| Magnetic Flux | 1 613 Mx | 16.1 µWb |
| Pc Coefficient | 0.89 | High (Stable) |
Table 11: Submerged application
MW 6x6 / N38
| Environment | Effective steel pull | Effect |
|---|---|---|
| Air (land) | 1.14 kg | Standard |
| Water (riverbed) |
1.31 kg
(+0.17 kg Buoyancy gain)
|
+14.5% |
1. Vertical hold
*Caution: On a vertical surface, the magnet retains merely ~20% of its perpendicular strength.
2. Steel saturation
*Thin metal sheet (e.g. 0.5mm PC case) severely weakens the holding force.
3. Power loss vs temp
*For N38 material, the safety limit is 80°C.
4. Demagnetization curve and operating point (B-H)
chart generated for the permeance coefficient Pc (Permeance Coefficient) = 0.89
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 |
Other products
Pros and cons of rare earth magnets.
Pros
- They do not lose strength, even over approximately 10 years – the drop in lifting capacity is only ~1% (based on measurements),
- They feature excellent resistance to weakening of magnetic properties when exposed to opposing magnetic fields,
- A magnet with a smooth silver surface has an effective appearance,
- Magnets are characterized by extremely high magnetic induction on the outer side,
- Neodymium magnets are characterized by extremely high magnetic induction on the magnet surface and can function (depending on the form) even at a temperature of 230°C or more...
- Thanks to the possibility of accurate shaping and adaptation to specialized solutions, neodymium magnets can be created in a broad palette of forms and dimensions, which increases their versatility,
- Wide application in high-tech industry – they serve a role in data components, drive modules, medical devices, and industrial machines.
- Thanks to concentrated force, small magnets offer high operating force, in miniature format,
Cons
- To avoid cracks under impact, we recommend using special steel holders. Such a solution secures the magnet and simultaneously improves its durability.
- Neodymium magnets lose force when exposed to high temperatures. After reaching 80°C, many of them experience permanent weakening of strength (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
- When exposed to humidity, magnets start to rust. To use them in conditions outside, it is recommended to use protective magnets, such as magnets in rubber or plastics, which secure oxidation as well as corrosion.
- Limited possibility of making nuts in the magnet and complicated shapes - preferred is casing - magnetic holder.
- Possible danger resulting from small fragments of magnets pose a threat, if swallowed, which gains importance in the context of child safety. Additionally, small components of these magnets are able to complicate diagnosis medical when they are in the body.
- High unit price – neodymium magnets cost more than other types of magnets (e.g. ferrite), which increases costs of application in large quantities
Pull force analysis
Best holding force of the magnet in ideal parameters – what affects it?
- on a plate made of mild steel, optimally conducting the magnetic field
- with a thickness minimum 10 mm
- with an ground contact surface
- with zero gap (no impurities)
- under vertical force direction (90-degree angle)
- at conditions approx. 20°C
Impact of factors on magnetic holding capacity in practice
- Air gap (betwixt the magnet and the metal), as even a tiny clearance (e.g. 0.5 mm) can cause a decrease in lifting capacity by up to 50% (this also applies to paint, rust or dirt).
- Force direction – remember that the magnet holds strongest perpendicularly. Under shear forces, the holding force drops drastically, often to levels of 20-30% of the nominal value.
- Plate thickness – insufficiently thick steel does not accept the full field, causing part of the power to be wasted into the air.
- Plate material – mild steel attracts best. Higher carbon content decrease magnetic properties and lifting capacity.
- Surface structure – the smoother and more polished the surface, the larger the contact zone and higher the lifting capacity. Unevenness acts like micro-gaps.
- Temperature influence – high temperature weakens pulling force. Exceeding the limit temperature can permanently demagnetize the magnet.
Holding force was tested on a smooth steel plate of 20 mm thickness, when the force acted perpendicularly, in contrast under shearing force the load capacity is reduced by as much as fivefold. In addition, even a small distance between the magnet’s surface and the plate reduces the holding force.
Safety rules for work with NdFeB magnets
Keep away from electronics
An intense magnetic field interferes with the functioning of compasses in phones and GPS navigation. Maintain magnets close to a device to prevent damaging the sensors.
Demagnetization risk
Control the heat. Exposing the magnet to high heat will permanently weaken its properties and strength.
Sensitization to coating
It is widely known that nickel (the usual finish) is a strong allergen. If your skin reacts to metals, refrain from touching magnets with bare hands and select versions in plastic housing.
Shattering risk
Despite the nickel coating, neodymium is brittle and cannot withstand shocks. Do not hit, as the magnet may crumble into sharp, dangerous pieces.
Pacemakers
Warning for patients: Powerful magnets affect medical devices. Maintain at least 30 cm distance or ask another person to work with the magnets.
Data carriers
Device Safety: Neodymium magnets can ruin data carriers and sensitive devices (heart implants, medical aids, mechanical watches).
Respect the power
Handle with care. Rare earth magnets attract from a long distance and snap with massive power, often faster than you can move away.
Adults only
Absolutely keep magnets out of reach of children. Risk of swallowing is significant, and the effects of magnets clamping inside the body are very dangerous.
Serious injuries
Danger of trauma: The pulling power is so immense that it can cause hematomas, crushing, and even bone fractures. Protective gloves are recommended.
Mechanical processing
Machining of neodymium magnets poses a fire risk. Magnetic powder reacts violently with oxygen and is difficult to extinguish.
