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
- Coating
- [NiCuNi] Nickel
How we measure these parameters — certificates and measurements
0.550 zł net / pcs
0.677 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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Technical details - 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 |
|---|---|---|
| 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
Presented information represent the result of a mathematical simulation. Results are based on models for the class Nd2Fe14B. Operational conditions may differ. Use these data as a supplementary guide during assembly planning.
Table 1: Static force (force vs distance) - characteristics
MW 6x6 / N38
| Distance (mm) | Induction (Gauss) / mT | Pull Force (kg/lbs/g/N) | Risk Status |
|---|---|---|---|
| 0 mm |
5527 Gs
552.7 mT
|
1.14 kg / 2.51 lbs
1140.0 g / 11.2 N
|
low risk |
| 1 mm |
3738 Gs
373.8 mT
|
0.52 kg / 1.15 lbs
521.5 g / 5.1 N
|
low risk |
| 2 mm |
2366 Gs
236.6 mT
|
0.21 kg / 0.46 lbs
209.0 g / 2.0 N
|
low risk |
| 3 mm |
1498 Gs
149.8 mT
|
0.08 kg / 0.18 lbs
83.7 g / 0.8 N
|
low risk |
| 5 mm |
665 Gs
66.5 mT
|
0.02 kg / 0.04 lbs
16.5 g / 0.2 N
|
low risk |
| 10 mm |
155 Gs
15.5 mT
|
0.00 kg / 0.00 lbs
0.9 g / 0.0 N
|
low risk |
| 15 mm |
58 Gs
5.8 mT
|
0.00 kg / 0.00 lbs
0.1 g / 0.0 N
|
low risk |
| 20 mm |
28 Gs
2.8 mT
|
0.00 kg / 0.00 lbs
0.0 g / 0.0 N
|
low risk |
| 30 mm |
9 Gs
0.9 mT
|
0.00 kg / 0.00 lbs
0.0 g / 0.0 N
|
low risk |
| 50 mm |
2 Gs
0.2 mT
|
0.00 kg / 0.00 lbs
0.0 g / 0.0 N
|
low risk |
Table 2: Vertical load (vertical surface)
MW 6x6 / N38
| Distance (mm) | Friction coefficient | Pull Force (kg/lbs/g/N) |
|---|---|---|
| 0 mm | Stal (~0.2) |
0.23 kg / 0.50 lbs
228.0 g / 2.2 N
|
| 1 mm | Stal (~0.2) |
0.10 kg / 0.23 lbs
104.0 g / 1.0 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 / 0.01 lbs
4.0 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) - behavior on slippery surfaces
MW 6x6 / N38
| Surface type | Friction coefficient / % Mocy | Max load (kg/lbs/g/N) |
|---|---|---|
| Raw steel |
µ = 0.3
30% Nominalnej Siły
|
0.34 kg / 0.75 lbs
342.0 g / 3.4 N
|
| Painted steel (standard) |
µ = 0.2
20% Nominalnej Siły
|
0.23 kg / 0.50 lbs
228.0 g / 2.2 N
|
| Oily/slippery steel |
µ = 0.1
10% Nominalnej Siły
|
0.11 kg / 0.25 lbs
114.0 g / 1.1 N
|
| Magnet with anti-slip rubber |
µ = 0.5
50% Nominalnej Siły
|
0.57 kg / 1.26 lbs
570.0 g / 5.6 N
|
Table 4: Material efficiency (substrate influence) - power losses
MW 6x6 / N38
| Steel thickness (mm) | % power | Real pull force (kg/lbs/g/N) |
|---|---|---|
| 0.5 mm |
|
0.11 kg / 0.25 lbs
114.0 g / 1.1 N
|
| 1 mm |
|
0.29 kg / 0.63 lbs
285.0 g / 2.8 N
|
| 2 mm |
|
0.57 kg / 1.26 lbs
570.0 g / 5.6 N
|
| 3 mm |
|
0.86 kg / 1.88 lbs
855.0 g / 8.4 N
|
| 5 mm |
|
1.14 kg / 2.51 lbs
1140.0 g / 11.2 N
|
| 10 mm |
|
1.14 kg / 2.51 lbs
1140.0 g / 11.2 N
|
| 11 mm |
|
1.14 kg / 2.51 lbs
1140.0 g / 11.2 N
|
| 12 mm |
|
1.14 kg / 2.51 lbs
1140.0 g / 11.2 N
|
Table 5: Thermal stability (material behavior) - power drop
MW 6x6 / N38
| Ambient temp. (°C) | Power loss | Remaining pull (kg/lbs/g/N) | Status |
|---|---|---|---|
| 20 °C | 0.0% |
1.14 kg / 2.51 lbs
1140.0 g / 11.2 N
|
OK |
| 40 °C | -2.2% |
1.11 kg / 2.46 lbs
1114.9 g / 10.9 N
|
OK |
| 60 °C | -4.4% |
1.09 kg / 2.40 lbs
1089.8 g / 10.7 N
|
OK |
| 80 °C | -6.6% |
1.06 kg / 2.35 lbs
1064.8 g / 10.4 N
|
|
| 100 °C | -28.8% |
0.81 kg / 1.79 lbs
811.7 g / 8.0 N
|
Table 6: Magnet-Magnet interaction (repulsion) - field range
MW 6x6 / N38
| Gap (mm) | Attraction (kg/lbs) (N-S) | Shear Force (kg/lbs/g/N) | Repulsion (kg/lbs) (N-N) |
|---|---|---|---|
| 0 mm |
5.32 kg / 11.74 lbs
5 995 Gs
|
0.80 kg / 1.76 lbs
799 g / 7.8 N
|
N/A |
| 1 mm |
3.70 kg / 8.17 lbs
9 220 Gs
|
0.56 kg / 1.23 lbs
556 g / 5.5 N
|
3.33 kg / 7.35 lbs
~0 Gs
|
| 2 mm |
2.44 kg / 5.37 lbs
7 476 Gs
|
0.37 kg / 0.81 lbs
365 g / 3.6 N
|
2.19 kg / 4.83 lbs
~0 Gs
|
| 3 mm |
1.55 kg / 3.42 lbs
5 968 Gs
|
0.23 kg / 0.51 lbs
233 g / 2.3 N
|
1.40 kg / 3.08 lbs
~0 Gs
|
| 5 mm |
0.61 kg / 1.35 lbs
3 755 Gs
|
0.09 kg / 0.20 lbs
92 g / 0.9 N
|
0.55 kg / 1.22 lbs
~0 Gs
|
| 10 mm |
0.08 kg / 0.17 lbs
1 330 Gs
|
0.01 kg / 0.03 lbs
12 g / 0.1 N
|
0.07 kg / 0.15 lbs
~0 Gs
|
| 20 mm |
0.00 kg / 0.01 lbs
311 Gs
|
0.00 kg / 0.00 lbs
1 g / 0.0 N
|
0.00 kg / 0.00 lbs
~0 Gs
|
| 50 mm |
0.00 kg / 0.00 lbs
31 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
19 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
12 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
8 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
6 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
5 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 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 |
| Mechanical watch | 20 Gs (2.0 mT) | 2.5 cm |
| Mobile device | 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 (cracking risk) - warning
MW 6x6 / N38
| Start from (mm) | Speed (km/h) | Energy (J) | Predicted outcome |
|---|---|---|---|
| 10 mm |
16.69 km/h
(4.64 m/s)
|
0.01 J | |
| 30 mm |
16.71 km/h
(4.64 m/s)
|
0.01 J | |
| 50 mm |
16.71 km/h
(4.64 m/s)
|
0.01 J | |
| 100 mm |
16.71 km/h
(4.64 m/s)
|
0.01 J |
Table 9: Surface protection spec
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: Construction 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. Wall mount (shear)
*Caution: On a vertical surface, the magnet retains merely approx. 20-30% of its perpendicular strength.
2. Steel thickness impact
*Thin metal sheet (e.g. computer case) significantly reduces the holding force.
3. Power loss vs temp
*For N38 grade, the max working temp is 80°C.
4. Demagnetization curve and operating point (B-H)
chart generated for the permeance coefficient Pc (Permeance Coefficient) = 0.89
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.
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% |
Sustainability
| recyclability (EoL) | 100% |
| recycled raw materials | ~10% (pre-cons) |
| carbon footprint | low / zredukowany |
| waste code (EWC) | 16 02 16 |
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Pros as well as cons of rare earth magnets.
Advantages
- Their strength remains stable, and after around ten years it drops only by ~1% (theoretically),
- They have excellent resistance to weakening of magnetic properties due to opposing magnetic fields,
- Thanks to the reflective finish, the layer of Ni-Cu-Ni, gold-plated, or silver gives an professional appearance,
- Magnetic induction on the working layer of the magnet remains strong,
- Due to their durability and thermal resistance, neodymium magnets are capable of operate (depending on the shape) even at high temperatures reaching 230°C or more...
- Thanks to modularity in forming and the ability to customize to complex applications,
- Significant place in innovative solutions – they serve a role in magnetic memories, motor assemblies, medical equipment, also technologically advanced constructions.
- Compactness – despite small sizes they provide effective action, making them ideal for precision applications
Disadvantages
- They are fragile upon too strong impacts. To avoid cracks, it is worth securing magnets in a protective case. Such protection not only shields the magnet but also increases its resistance to damage
- When exposed to high temperature, neodymium magnets experience a drop in power. Often, when the temperature exceeds 80°C, their strength 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
- 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 and corrosion.
- Due to limitations in creating nuts and complex forms in magnets, we recommend using a housing - magnetic mount.
- Health risk to health – tiny shards of magnets are risky, if swallowed, which is particularly important in the context of child health protection. Furthermore, small elements of these devices are able to be problematic in diagnostics medical after entering the body.
- High unit price – neodymium magnets cost more than other types of magnets (e.g. ferrite), which can limit application in large quantities
Lifting parameters
Magnetic strength at its maximum – what it depends on?
- on a block made of mild steel, effectively closing the magnetic field
- with a thickness no less than 10 mm
- with an ground touching surface
- with zero gap (without impurities)
- during detachment in a direction vertical to the plane
- at ambient temperature room level
Determinants of practical lifting force of a magnet
- Air gap (between the magnet and the plate), because even a tiny distance (e.g. 0.5 mm) can cause a drastic drop in force by up to 50% (this also applies to paint, corrosion or dirt).
- Angle of force application – highest force is available only during perpendicular pulling. The force required to slide of the magnet along the plate is usually many times smaller (approx. 1/5 of the lifting capacity).
- Wall thickness – the thinner the sheet, the weaker the hold. Part of the magnetic field penetrates through instead of converting into lifting capacity.
- Steel grade – the best choice is pure iron steel. Stainless steels may generate lower lifting capacity.
- Surface condition – ground elements guarantee perfect abutment, which improves force. Uneven metal weaken the grip.
- Temperature – heating the magnet causes a temporary drop of induction. Check the thermal limit for a given model.
Lifting capacity was assessed with the use of a smooth steel plate of suitable thickness (min. 20 mm), under vertically applied force, whereas under parallel forces the load capacity is reduced by as much as 75%. In addition, even a slight gap between the magnet and the plate lowers the holding force.
Safety rules for work with neodymium magnets
Fire warning
Drilling and cutting of neodymium magnets carries a risk of fire risk. Neodymium dust reacts violently with oxygen and is hard to extinguish.
Crushing force
Large magnets can break fingers in a fraction of a second. Do not put your hand between two strong magnets.
Warning for allergy sufferers
Nickel alert: The nickel-copper-nickel coating contains nickel. If an allergic reaction appears, cease handling magnets and use protective gear.
Heat sensitivity
Regular neodymium magnets (grade N) lose power when the temperature goes above 80°C. Damage is permanent.
ICD Warning
Medical warning: Strong magnets can turn off pacemakers and defibrillators. Stay away if you have electronic implants.
This is not a toy
Product intended for adults. Tiny parts pose a choking risk, causing serious injuries. Store away from children and animals.
Keep away from computers
Device Safety: Strong magnets can damage data carriers and delicate electronics (heart implants, hearing aids, timepieces).
Eye protection
Despite metallic appearance, the material is brittle and cannot withstand shocks. Avoid impacts, as the magnet may crumble into hazardous fragments.
Handling rules
Exercise caution. Rare earth magnets attract from a distance and connect with huge force, often faster than you can react.
Compass and GPS
An intense magnetic field disrupts the operation of magnetometers in smartphones and navigation systems. Do not bring magnets close to a smartphone to avoid damaging the sensors.
