MW 6x3 zestaw 50 szt. / N38 - cylindrical magnet
cylindrical magnet
Catalog no 010534
GTIN/EAN: 5906301815259
- Diameter Ø
- 6 mm [±0,1 mm]
- Height
- 3 mm [±0,1 mm]
- Weight
- 32 g
- Magnetization Direction
- ↑ axial
- Coating
- [NiCuNi] Nickel
How we measure these parameters — certificates and measurements
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Need more?Frequently asked questions
Where can I buy strong cylindrical neodymium magnets?
Can a small cylindrical magnet provide a strong grip for precise workshop work?
Which cylindrical magnet can work at a higher temperature?
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 6x3 zestaw 50 szt. / N38 - cylindrical magnet
Specification / characteristics - MW 6x3 zestaw 50 szt. / N38 - cylindrical magnet
| properties | values |
|---|---|
| Cat. no. | 010534 |
| GTIN/EAN | 5906301815259 |
| Distributor | 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 | 32 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 |
|---|---|---|
| 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 |
Engineering analysis of the magnet - report
The following data constitute the result of a engineering calculation. Values were calculated on algorithms for the class Nd2Fe14B. Operational parameters may differ from theoretical values. Treat these calculations as a reference point during assembly planning.
Table 1: Static pull force (pull vs gap) - interaction chart
MW 6x3 zestaw 50 szt. / 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 pounds
1150.0 g / 11.3 N
|
weak grip |
| 1 mm |
2999 Gs
299.9 mT
|
0.54 kg / 1.19 pounds
541.6 g / 5.3 N
|
weak grip |
| 2 mm |
1877 Gs
187.7 mT
|
0.21 kg / 0.47 pounds
212.2 g / 2.1 N
|
weak grip |
| 3 mm |
1161 Gs
116.1 mT
|
0.08 kg / 0.18 pounds
81.2 g / 0.8 N
|
weak grip |
| 5 mm |
489 Gs
48.9 mT
|
0.01 kg / 0.03 pounds
14.4 g / 0.1 N
|
weak grip |
| 10 mm |
103 Gs
10.3 mT
|
0.00 kg / 0.00 pounds
0.6 g / 0.0 N
|
weak grip |
| 15 mm |
36 Gs
3.6 mT
|
0.00 kg / 0.00 pounds
0.1 g / 0.0 N
|
weak grip |
| 20 mm |
17 Gs
1.7 mT
|
0.00 kg / 0.00 pounds
0.0 g / 0.0 N
|
weak grip |
| 30 mm |
5 Gs
0.5 mT
|
0.00 kg / 0.00 pounds
0.0 g / 0.0 N
|
weak grip |
| 50 mm |
1 Gs
0.1 mT
|
0.00 kg / 0.00 pounds
0.0 g / 0.0 N
|
weak grip |
Table 2: Slippage force (vertical surface)
MW 6x3 zestaw 50 szt. / N38
| Distance (mm) | Friction coefficient | Pull Force (kg/lbs/g/N) |
|---|---|---|
| 0 mm | Raw steel (µ ≈ 0.2) |
0.23 kg / 0.51 pounds
230.0 g / 2.3 N
|
| 1 mm | Raw steel (µ ≈ 0.2) |
0.11 kg / 0.24 pounds
108.0 g / 1.1 N
|
| 2 mm | Raw steel (µ ≈ 0.2) |
0.04 kg / 0.09 pounds
42.0 g / 0.4 N
|
| 3 mm | Raw steel (µ ≈ 0.2) |
0.02 kg / 0.04 pounds
16.0 g / 0.2 N
|
| 5 mm | Raw steel (µ ≈ 0.2) |
0.00 kg / 0.00 pounds
2.0 g / 0.0 N
|
| 10 mm | Raw steel (µ ≈ 0.2) |
0.00 kg / 0.00 pounds
0.0 g / 0.0 N
|
| 15 mm | Raw steel (µ ≈ 0.2) |
0.00 kg / 0.00 pounds
0.0 g / 0.0 N
|
| 20 mm | Raw steel (µ ≈ 0.2) |
0.00 kg / 0.00 pounds
0.0 g / 0.0 N
|
| 30 mm | Raw steel (µ ≈ 0.2) |
0.00 kg / 0.00 pounds
0.0 g / 0.0 N
|
| 50 mm | Raw steel (µ ≈ 0.2) |
0.00 kg / 0.00 pounds
0.0 g / 0.0 N
|
Table 3: Wall mounting (sliding) - vertical pull
MW 6x3 zestaw 50 szt. / N38
| Surface type | Friction coefficient / % | Max load (kg/lbs/g/N) |
|---|---|---|
| Raw steel |
µ = 0.3
30% of nominal force
|
0.35 kg / 0.76 pounds
345.0 g / 3.4 N
|
| Painted steel (standard) |
µ = 0.2
20% of nominal force
|
0.23 kg / 0.51 pounds
230.0 g / 2.3 N
|
| Oily/slippery steel |
µ = 0.1
10% of nominal force
|
0.11 kg / 0.25 pounds
115.0 g / 1.1 N
|
| Magnet with anti-slip rubber |
µ = 0.5
50% of nominal force
|
0.58 kg / 1.27 pounds
575.0 g / 5.6 N
|
Table 4: Steel thickness (substrate influence) - power losses
MW 6x3 zestaw 50 szt. / N38
| Steel thickness (mm) | % power | Real pull force (kg/lbs/g/N) |
|---|---|---|
| 0.5 mm |
|
0.11 kg / 0.25 pounds
115.0 g / 1.1 N
|
| 1 mm |
|
0.29 kg / 0.63 pounds
287.5 g / 2.8 N
|
| 2 mm |
|
0.58 kg / 1.27 pounds
575.0 g / 5.6 N
|
| 3 mm |
|
0.86 kg / 1.90 pounds
862.5 g / 8.5 N
|
| 5 mm |
|
1.15 kg / 2.54 pounds
1150.0 g / 11.3 N
|
| 10 mm |
|
1.15 kg / 2.54 pounds
1150.0 g / 11.3 N
|
| 11 mm |
|
1.15 kg / 2.54 pounds
1150.0 g / 11.3 N
|
| 12 mm |
|
1.15 kg / 2.54 pounds
1150.0 g / 11.3 N
|
Table 5: Working in heat (stability) - power drop
MW 6x3 zestaw 50 szt. / N38
| Magnet temperature (°C) | Force change relative to 20°C | Remaining pull (kg/lbs/g/N) | Status |
|---|---|---|---|
| 20 °C | 0.0% |
1.15 kg / 2.54 pounds
1150.0 g / 11.3 N
|
Estimate |
| 40 °C | -4.4% |
1.10 kg / 2.42 pounds
1100.0 g / 10.8 N
|
Estimate |
| 60 °C | -8.6% |
1.05 kg / 2.32 pounds
1051.0 g / 10.3 N
|
Estimate |
| 80 °C | -12.8% |
1.00 kg / 2.21 pounds
1003.2 g / 9.8 N
|
Material limit |
| 100 °C | — | — | Out of range — no model |
Table 6: Magnet-Magnet interaction (repulsion) - field range
MW 6x3 zestaw 50 szt. / 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 pounds
5 527 Gs
|
0.50 kg / 1.10 pounds
499 g / 4.9 N
|
N/A |
| 1 mm |
2.37 kg / 5.23 pounds
7 376 Gs
|
0.36 kg / 0.78 pounds
356 g / 3.5 N
|
2.13 kg / 4.70 pounds
~0 Gs
|
| 2 mm |
1.57 kg / 3.46 pounds
5 999 Gs
|
0.24 kg / 0.52 pounds
235 g / 2.3 N
|
1.41 kg / 3.11 pounds
~0 Gs
|
| 3 mm |
0.99 kg / 2.19 pounds
4 772 Gs
|
0.15 kg / 0.33 pounds
149 g / 1.5 N
|
0.89 kg / 1.97 pounds
~0 Gs
|
| 5 mm |
0.38 kg / 0.83 pounds
2 948 Gs
|
0.06 kg / 0.13 pounds
57 g / 0.6 N
|
0.34 kg / 0.75 pounds
~0 Gs
|
| 10 mm |
0.04 kg / 0.09 pounds
978 Gs
|
0.01 kg / 0.01 pounds
6 g / 0.1 N
|
0.04 kg / 0.08 pounds
~0 Gs
|
| 20 mm |
0.00 kg / 0.00 pounds
205 Gs
|
0.00 kg / 0.00 pounds
0 g / 0.0 N
|
0.00 kg / 0.00 pounds
~0 Gs
|
| 50 mm |
0.00 kg / 0.00 pounds
18 Gs
|
0.00 kg / 0.00 pounds
0 g / 0.0 N
|
0.00 kg / 0.00 pounds
~0 Gs
|
| 60 mm |
0.00 kg / 0.00 pounds
11 Gs
|
0.00 kg / 0.00 pounds
0 g / 0.0 N
|
0.00 kg / 0.00 pounds
~0 Gs
|
| 70 mm |
0.00 kg / 0.00 pounds
7 Gs
|
0.00 kg / 0.00 pounds
0 g / 0.0 N
|
0.00 kg / 0.00 pounds
~0 Gs
|
| 80 mm |
0.00 kg / 0.00 pounds
5 Gs
|
0.00 kg / 0.00 pounds
0 g / 0.0 N
|
0.00 kg / 0.00 pounds
~0 Gs
|
| 90 mm |
0.00 kg / 0.00 pounds
3 Gs
|
0.00 kg / 0.00 pounds
0 g / 0.0 N
|
0.00 kg / 0.00 pounds
~0 Gs
|
| 100 mm |
0.00 kg / 0.00 pounds
2 Gs
|
0.00 kg / 0.00 pounds
0 g / 0.0 N
|
0.00 kg / 0.00 pounds
~0 Gs
|
Table 7: Axial field levels — not safety zones
MW 6x3 zestaw 50 szt. / N38
| Field level (Gs) | mT | Model distance (cm) |
|---|---|---|
| < 5 Gs | < 0.5 mT | 3.5 cm |
| < 10 Gs | < 1.0 mT | 2.5 cm |
| < 20 Gs | < 2.0 mT | 2.0 cm |
| < 40 Gs | < 4.0 mT | 1.5 cm |
| < 50 Gs | < 5.0 mT | 1.5 cm |
| < 400 Gs | < 40.0 mT | 1.0 cm |
| < 600 Gs | < 60.0 mT | 0.5 cm |
Table 8: Dynamics (cracking risk) - warning
MW 6x3 zestaw 50 szt. / N38
| Start from (mm) | Speed (km/h) | Energy (J) | Predicted outcome |
|---|---|---|---|
| 10 mm |
3.35 km/h
(0.93 m/s)
|
0.01 J | |
| 30 mm |
3.35 km/h
(0.93 m/s)
|
0.01 J | |
| 50 mm |
3.35 km/h
(0.93 m/s)
|
0.01 J | |
| 100 mm |
3.35 km/h
(0.93 m/s)
|
0.01 J |
Table 9: Coating parameters (durability)
MW 6x3 zestaw 50 szt. / 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 zestaw 50 szt. / N38
| Parameter | Value | SI Unit / Description |
|---|---|---|
| Magnetic Flux | 1 256 Mx | 12.6 µWb |
| Pc Coefficient | 0.59 | Low (Flat) |
Table 11: Underwater work (magnet fishing)
MW 6x3 zestaw 50 szt. / 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. Wall mount (shear)
*Warning: On a vertical wall, the magnet retains merely a fraction of its nominal pull.
2. Plate thickness effect
*Thin steel (e.g. 0.5mm PC case) significantly reduces the holding force.
3. Heat tolerance
N38: the maximum material working temperature is 80°C. Permitted conditions also depend on the shape and magnetic circuit.
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.
Elemental analysis
| 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 deals
Strengths as well as weaknesses of rare earth magnets.
Advantages
- They virtually do not lose power, because even after 10 years the decline in efficiency is only ~1% (according to literature),
- They retain their magnetic properties even under external field action,
- By using a lustrous coating of gold, the element has an modern look,
- Magnetic induction on the top side of the magnet remains impressive,
- Due to their durability and thermal resistance, neodymium magnets can operate (depending on the shape) even at high temperatures reaching 230°C or more...
- Thanks to modularity in shaping and the ability to modify to individual projects,
- Versatile presence in future technologies – they find application in mass storage devices, electric drive systems, precision medical tools, and modern systems.
- Relatively small size with high pulling force – neodymium magnets offer strong magnetic field in small dimensions, which allows their use in small systems
Disadvantages
- To avoid cracks under impact, we recommend using special steel housings. Such a solution secures the magnet and simultaneously improves its durability.
- Do not exceed this material temperature limit: 80°C. Overheating may permanently weaken the magnet.
- They rust in a humid environment. For use outdoors we suggest using waterproof magnets e.g. in rubber, plastic
- Due to limitations in producing threads and complicated shapes in magnets, we propose using cover - magnetic holder.
- Potential hazard related to microscopic parts of magnets pose a threat, if swallowed, which is particularly important in the context of child health protection. Furthermore, tiny parts of these magnets can be problematic in diagnostics medical when they are in the body.
- Due to expensive raw materials, their price is higher than average,
Lifting parameters
Best holding force of the magnet in ideal parameters – what it depends on?
- using a plate made of high-permeability steel, acting as a circuit closing element
- possessing a thickness of min. 10 mm to ensure full flux closure
- characterized by lack of roughness
- with zero gap (without impurities)
- under axial force direction (90-degree angle)
- at temperature approx. 20 degrees Celsius
Impact of factors on magnetic holding capacity in practice
- Gap between magnet and steel – every millimeter of separation (caused e.g. by varnish or unevenness) drastically reduces the magnet efficiency, often by half at just 0.5 mm.
- Load vector – highest force is reached only during perpendicular pulling. The shear force of the magnet along the plate is standardly many times smaller (approx. 1/5 of the lifting capacity).
- Substrate thickness – to utilize 100% power, the steel must be sufficiently thick. Paper-thin metal limits the lifting capacity (the magnet "punches through" it).
- Steel type – mild steel attracts best. Alloy steels decrease magnetic permeability and lifting capacity.
- Surface quality – the smoother and more polished the plate, the larger the contact zone and higher the lifting capacity. Roughness creates an air distance.
- Temperature – heating the magnet results in weakening of force. It is worth remembering the thermal limit for a given model.
Lifting capacity was assessed using a smooth steel plate of optimal thickness (min. 20 mm), under vertically applied force, however under parallel forces the lifting capacity is smaller. In addition, even a minimal clearance between the magnet’s surface and the plate decreases the lifting capacity.
H&S for magnets
Compass and GPS
Remember: rare earth magnets produce a field that interferes with sensitive sensors. Keep a separation from your phone, device, and navigation systems.
Fire risk
Powder produced during machining of magnets is combustible. Avoid drilling into magnets without proper cooling and knowledge.
This is not a toy
Strictly keep magnets out of reach of children. Choking hazard is high, and the consequences of magnets connecting inside the body are very dangerous.
Hand protection
Big blocks can smash fingers instantly. Under no circumstances place your hand betwixt two strong magnets.
Operating temperature
Do not exceed the maximum operating temperature stated in the specifications of the particular product. The limit depends on the material, geometry and operating arrangement; there is no single threshold for all neodymium magnets. Overheating can permanently weaken a magnet.
Medical interference
Warning for patients: Powerful magnets disrupt electronics. Keep at least 30 cm distance or request help to work with the magnets.
Powerful field
Before use, read the rules. Sudden snapping can break the magnet or hurt your hand. Be predictive.
Protect data
Powerful magnetic fields can destroy records on credit cards, hard drives, and other magnetic media. Stay away of min. 10 cm.
Protective goggles
NdFeB magnets are sintered ceramics, meaning they are fragile like glass. Collision of two magnets leads to them shattering into small pieces.
Avoid contact if allergic
Studies show that nickel (the usual finish) is a common allergen. If your skin reacts to metals, refrain from touching magnets with bare hands or choose versions in plastic housing.
