MW 5x2 zestaw 200 szt. / N38 - cylindrical magnet
cylindrical magnet
Catalog no 010532
GTIN/EAN: 5906301815235
- Diameter Ø
- 5 mm [±0,1 mm]
- Height
- 2 mm [±0,1 mm]
- Weight
- 58 g
- Magnetization Direction
- ↑ axial
- Coating
- [NiCuNi] Nickel
How we measure these parameters — certificates and measurements
36.58 zł net / pcs
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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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Product card - MW 5x2 zestaw 200 szt. / N38 - cylindrical magnet
Specification / characteristics - MW 5x2 zestaw 200 szt. / N38 - cylindrical magnet
| properties | values |
|---|---|
| Cat. no. | 010532 |
| GTIN/EAN | 5906301815235 |
| Distributor | Dhit sp. z o.o. |
| Country of origin | Poland / China / Germany |
| Customs code | 85059029 |
| Diameter Ø | 5 mm [±0,1 mm] |
| Height | 2 mm [±0,1 mm] |
| Weight | 58 g |
| Magnetization Direction | ↑ axial |
| Load capacity ~ ? | 0.70 kg / 6.86 N |
| Magnetic Induction ~ ? | 386.50 mT / 3865 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 |
Technical modeling of the assembly - technical parameters
The following data are the direct effect of a engineering analysis. Values rely on algorithms for the class Nd2Fe14B. Operational parameters might slightly deviate from the simulation results. Please consider these calculations as a supplementary guide during assembly planning.
Table 1: Static force (force vs gap) - power drop
MW 5x2 zestaw 200 szt. / N38
| Distance (mm) | Induction (Gauss) / mT | Pull Force (kg/lbs/g/N) | Risk Status |
|---|---|---|---|
| 0 mm |
3860 Gs
386.0 mT
|
0.70 kg / 1.54 pounds
700.0 g / 6.9 N
|
low risk |
| 1 mm |
2460 Gs
246.0 mT
|
0.28 kg / 0.63 pounds
284.4 g / 2.8 N
|
low risk |
| 2 mm |
1384 Gs
138.4 mT
|
0.09 kg / 0.20 pounds
90.0 g / 0.9 N
|
low risk |
| 3 mm |
782 Gs
78.2 mT
|
0.03 kg / 0.06 pounds
28.8 g / 0.3 N
|
low risk |
| 5 mm |
293 Gs
29.3 mT
|
0.00 kg / 0.01 pounds
4.0 g / 0.0 N
|
low risk |
| 10 mm |
55 Gs
5.5 mT
|
0.00 kg / 0.00 pounds
0.1 g / 0.0 N
|
low risk |
| 15 mm |
18 Gs
1.8 mT
|
0.00 kg / 0.00 pounds
0.0 g / 0.0 N
|
low risk |
| 20 mm |
8 Gs
0.8 mT
|
0.00 kg / 0.00 pounds
0.0 g / 0.0 N
|
low risk |
| 30 mm |
3 Gs
0.3 mT
|
0.00 kg / 0.00 pounds
0.0 g / 0.0 N
|
low risk |
| 50 mm |
1 Gs
0.1 mT
|
0.00 kg / 0.00 pounds
0.0 g / 0.0 N
|
low risk |
Table 2: Sliding load (wall)
MW 5x2 zestaw 200 szt. / N38
| Distance (mm) | Friction coefficient | Pull Force (kg/lbs/g/N) |
|---|---|---|
| 0 mm | Raw steel (µ ≈ 0.2) |
0.14 kg / 0.31 pounds
140.0 g / 1.4 N
|
| 1 mm | Raw steel (µ ≈ 0.2) |
0.06 kg / 0.12 pounds
56.0 g / 0.5 N
|
| 2 mm | Raw steel (µ ≈ 0.2) |
0.02 kg / 0.04 pounds
18.0 g / 0.2 N
|
| 3 mm | Raw steel (µ ≈ 0.2) |
0.01 kg / 0.01 pounds
6.0 g / 0.1 N
|
| 5 mm | Raw steel (µ ≈ 0.2) |
0.00 kg / 0.00 pounds
0.0 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: Vertical assembly (sliding) - behavior on slippery surfaces
MW 5x2 zestaw 200 szt. / N38
| Surface type | Friction coefficient / % | Max load (kg/lbs/g/N) |
|---|---|---|
| Raw steel |
µ = 0.3
30% of nominal force
|
0.21 kg / 0.46 pounds
210.0 g / 2.1 N
|
| Painted steel (standard) |
µ = 0.2
20% of nominal force
|
0.14 kg / 0.31 pounds
140.0 g / 1.4 N
|
| Oily/slippery steel |
µ = 0.1
10% of nominal force
|
0.07 kg / 0.15 pounds
70.0 g / 0.7 N
|
| Magnet with anti-slip rubber |
µ = 0.5
50% of nominal force
|
0.35 kg / 0.77 pounds
350.0 g / 3.4 N
|
Table 4: Material efficiency (saturation) - power losses
MW 5x2 zestaw 200 szt. / N38
| Steel thickness (mm) | % power | Real pull force (kg/lbs/g/N) |
|---|---|---|
| 0.5 mm |
|
0.07 kg / 0.15 pounds
70.0 g / 0.7 N
|
| 1 mm |
|
0.18 kg / 0.39 pounds
175.0 g / 1.7 N
|
| 2 mm |
|
0.35 kg / 0.77 pounds
350.0 g / 3.4 N
|
| 3 mm |
|
0.52 kg / 1.16 pounds
525.0 g / 5.2 N
|
| 5 mm |
|
0.70 kg / 1.54 pounds
700.0 g / 6.9 N
|
| 10 mm |
|
0.70 kg / 1.54 pounds
700.0 g / 6.9 N
|
| 11 mm |
|
0.70 kg / 1.54 pounds
700.0 g / 6.9 N
|
| 12 mm |
|
0.70 kg / 1.54 pounds
700.0 g / 6.9 N
|
Table 5: Thermal resistance (material behavior) - resistance threshold
MW 5x2 zestaw 200 szt. / N38
| Magnet temperature (°C) | Force change relative to 20°C | Remaining pull (kg/lbs/g/N) | Status |
|---|---|---|---|
| 20 °C | 0.0% |
0.70 kg / 1.54 pounds
700.0 g / 6.9 N
|
Estimate |
| 40 °C | -4.4% |
0.67 kg / 1.48 pounds
669.5 g / 6.6 N
|
Estimate |
| 60 °C | -8.6% |
0.64 kg / 1.41 pounds
639.8 g / 6.3 N
|
Estimate |
| 80 °C | -12.8% |
0.61 kg / 1.35 pounds
610.6 g / 6.0 N
|
Material limit |
| 100 °C | — | — | Out of range — no model |
Table 6: Magnet-Magnet interaction (attraction) - forces in the system
MW 5x2 zestaw 200 szt. / N38
| Gap (mm) | Attraction (kg/lbs) (N-S) | Sliding Force (kg/lbs/g/N) | Repulsion (kg/lbs) (N-N) |
|---|---|---|---|
| 0 mm |
1.80 kg / 3.98 pounds
5 236 Gs
|
0.27 kg / 0.60 pounds
271 g / 2.7 N
|
N/A |
| 1 mm |
1.21 kg / 2.68 pounds
6 336 Gs
|
0.18 kg / 0.40 pounds
182 g / 1.8 N
|
1.09 kg / 2.41 pounds
~0 Gs
|
| 2 mm |
0.73 kg / 1.62 pounds
4 921 Gs
|
0.11 kg / 0.24 pounds
110 g / 1.1 N
|
0.66 kg / 1.45 pounds
~0 Gs
|
| 3 mm |
0.42 kg / 0.92 pounds
3 711 Gs
|
0.06 kg / 0.14 pounds
62 g / 0.6 N
|
0.37 kg / 0.83 pounds
~0 Gs
|
| 5 mm |
0.13 kg / 0.29 pounds
2 071 Gs
|
0.02 kg / 0.04 pounds
19 g / 0.2 N
|
0.12 kg / 0.26 pounds
~0 Gs
|
| 10 mm |
0.01 kg / 0.02 pounds
587 Gs
|
0.00 kg / 0.00 pounds
2 g / 0.0 N
|
0.01 kg / 0.02 pounds
~0 Gs
|
| 20 mm |
0.00 kg / 0.00 pounds
110 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
9 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
5 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
3 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
2 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
2 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
1 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 5x2 zestaw 200 szt. / N38
| Field level (Gs) | mT | Model distance (cm) |
|---|---|---|
| < 5 Gs | < 0.5 mT | 2.5 cm |
| < 10 Gs | < 1.0 mT | 2.0 cm |
| < 20 Gs | < 2.0 mT | 1.5 cm |
| < 40 Gs | < 4.0 mT | 1.5 cm |
| < 50 Gs | < 5.0 mT | 1.5 cm |
| < 400 Gs | < 40.0 mT | 0.5 cm |
| < 600 Gs | < 60.0 mT | 0.5 cm |
Table 8: Impact energy (cracking risk) - warning
MW 5x2 zestaw 200 szt. / N38
| Start from (mm) | Speed (km/h) | Energy (J) | Predicted outcome |
|---|---|---|---|
| 10 mm |
1.79 km/h
(0.50 m/s)
|
0.01 J | |
| 30 mm |
1.79 km/h
(0.50 m/s)
|
0.01 J | |
| 50 mm |
1.79 km/h
(0.50 m/s)
|
0.01 J | |
| 100 mm |
1.79 km/h
(0.50 m/s)
|
0.01 J |
Table 9: Corrosion resistance
MW 5x2 zestaw 200 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: Electrical data (Pc)
MW 5x2 zestaw 200 szt. / N38
| Parameter | Value | SI Unit / Description |
|---|---|---|
| Magnetic Flux | 785 Mx | 7.9 µWb |
| Pc Coefficient | 0.50 | Low (Flat) |
Table 11: Hydrostatics and buoyancy
MW 5x2 zestaw 200 szt. / N38
| Environment | Effective steel pull | Effect |
|---|---|---|
| Air (land) | 0.70 kg | Standard |
| Water (riverbed) |
0.80 kg
(+0.10 kg buoyancy gain)
|
+14.5% |
1. Vertical hold
*Caution: On a vertical surface, the magnet retains just a fraction of its max power.
2. Steel thickness impact
*Thin steel (e.g. 0.5mm PC case) significantly reduces the holding force.
3. Temperature resistance
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) = 0.50
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% |
Sustainability
| recyclability (EoL) | 100% |
| recycled raw materials | ~10% (pre-cons) |
| carbon footprint | low / zredukowany |
| waste code (EWC) | 16 02 16 |
See also offers
Strengths as well as weaknesses of rare earth magnets.
Pros
- They do not lose strength, even during approximately 10 years – the decrease in power is only ~1% (theoretically),
- Magnets effectively defend themselves against loss of magnetization caused by ambient magnetic noise,
- By using a shiny coating of nickel, the element acquires an elegant look,
- The surface of neodymium magnets generates a powerful magnetic field – this is a distinguishing feature,
- 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 versatility in constructing and the ability to modify to client solutions,
- Versatile presence in electronics industry – they are used in computer drives, brushless drives, advanced medical instruments, and modern systems.
- Compactness – despite small sizes they offer powerful magnetic field, making them ideal for precision applications
Disadvantages
- At strong impacts they can crack, therefore we advise placing them in steel cases. A metal housing provides additional protection against damage and increases the magnet's 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 advise using waterproof magnets e.g. in rubber, plastic
- Limited possibility of making nuts in the magnet and complex forms - preferred is a housing - magnet mounting.
- Health risk related to microscopic parts of magnets pose a threat, if swallowed, which is particularly important in the context of child safety. It is also worth noting that tiny parts of these devices can disrupt the diagnostic process medical when they are in the body.
- With large orders the cost of neodymium magnets can be a barrier,
Lifting parameters
Highest magnetic holding force – what affects it?
- with the application of a sheet made of special test steel, ensuring maximum field concentration
- possessing a thickness of minimum 10 mm to avoid saturation
- with an ground touching surface
- with direct contact (no paint)
- during detachment in a direction vertical to the plane
- in neutral thermal conditions
Lifting capacity in real conditions – factors
- Distance (betwixt the magnet and the plate), since even a tiny distance (e.g. 0.5 mm) leads to a drastic drop in lifting capacity by up to 50% (this also applies to varnish, rust or dirt).
- Force direction – declared lifting capacity refers to pulling vertically. When attempting to slide, the magnet holds much less (typically approx. 20-30% of maximum force).
- Element thickness – to utilize 100% power, the steel must be adequately massive. Paper-thin metal limits the lifting capacity (the magnet "punches through" it).
- Steel type – mild steel gives the best results. Alloy steels reduce magnetic permeability and holding force.
- Base smoothness – the more even the surface, the better the adhesion and higher the lifting capacity. Unevenness acts like micro-gaps.
- 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).
Lifting capacity was assessed using a steel plate with a smooth surface of optimal thickness (min. 20 mm), under vertically applied force, in contrast under attempts to slide the magnet the load capacity is reduced by as much as fivefold. Additionally, even a minimal clearance between the magnet and the plate decreases the holding force.
Warnings
Precision electronics
Note: neodymium magnets produce a field that disrupts sensitive sensors. Keep a separation from your phone, device, and navigation systems.
Warning for heart patients
For implant holders: Strong magnetic fields disrupt electronics. Maintain minimum 30 cm distance or ask another person to handle the 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.
Shattering risk
Protect your eyes. Magnets can explode upon uncontrolled impact, ejecting sharp fragments into the air. Eye protection is mandatory.
Choking Hazard
Adult use only. Tiny parts can be swallowed, causing severe trauma. Keep away from children and animals.
Allergic reactions
Allergy Notice: The Ni-Cu-Ni coating contains nickel. If an allergic reaction happens, cease working with magnets and wear gloves.
Serious injuries
Large magnets can smash fingers in a fraction of a second. Do not place your hand between two strong magnets.
Conscious usage
Before use, read the rules. Sudden snapping can break the magnet or injure your hand. Be predictive.
Do not drill into magnets
Dust produced during grinding of magnets is flammable. Do not drill into magnets unless you are an expert.
Threat to electronics
Equipment safety: Neodymium magnets can ruin data carriers and delicate electronics (heart implants, hearing aids, timepieces).
