MW 5x3 / N38 - cylindrical magnet
cylindrical magnet
Catalog no 010087
GTIN/EAN: 5906301810865
Diameter Ø
5 mm [±0,1 mm]
Height
3 mm [±0,1 mm]
Weight
0.44 g
Magnetization Direction
↑ axial
Load capacity
0.84 kg / 8.25 N
Magnetic Induction
475.16 mT / 4752 Gs
Coating
[NiCuNi] Nickel
0.283 ZŁ with VAT / pcs + price for transport
0.230 ZŁ net + 23% VAT / pcs
bulk discounts:
Need more?
Call us
+48 22 499 98 98
alternatively drop us a message through
our online form
the contact section.
Force and appearance of a neodymium magnet can be verified with our
modular calculator.
Same-day shipping for orders placed before 14:00.
Technical details - MW 5x3 / N38 - cylindrical magnet
Specification / characteristics - MW 5x3 / N38 - cylindrical magnet
| properties | values |
|---|---|
| Cat. no. | 010087 |
| GTIN/EAN | 5906301810865 |
| Production/Distribution | Dhit sp. z o.o. |
| Country of origin | Poland / China / Germany |
| Customs code | 85059029 |
| Diameter Ø | 5 mm [±0,1 mm] |
| Height | 3 mm [±0,1 mm] |
| Weight | 0.44 g |
| Magnetization Direction | ↑ axial |
| Load capacity ~ ? | 0.84 kg / 8.25 N |
| Magnetic Induction ~ ? | 475.16 mT / 4752 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 |
Technical analysis of the product - technical parameters
The following values represent the direct effect of a physical analysis. Results are based on models for the class Nd2Fe14B. Actual performance might slightly differ from theoretical values. Use these calculations as a reference point for designers.
Table 1: Static pull force (pull vs gap) - characteristics
MW 5x3 / N38
| Distance (mm) | Induction (Gauss) / mT | Pull Force (kg/lbs/g/N) | Risk Status |
|---|---|---|---|
| 0 mm |
4745 Gs
474.5 mT
|
0.84 kg / 1.85 LBS
840.0 g / 8.2 N
|
safe |
| 1 mm |
2955 Gs
295.5 mT
|
0.33 kg / 0.72 LBS
325.8 g / 3.2 N
|
safe |
| 2 mm |
1672 Gs
167.2 mT
|
0.10 kg / 0.23 LBS
104.4 g / 1.0 N
|
safe |
| 3 mm |
960 Gs
96.0 mT
|
0.03 kg / 0.08 LBS
34.4 g / 0.3 N
|
safe |
| 5 mm |
372 Gs
37.2 mT
|
0.01 kg / 0.01 LBS
5.2 g / 0.1 N
|
safe |
| 10 mm |
74 Gs
7.4 mT
|
0.00 kg / 0.00 LBS
0.2 g / 0.0 N
|
safe |
| 15 mm |
25 Gs
2.5 mT
|
0.00 kg / 0.00 LBS
0.0 g / 0.0 N
|
safe |
| 20 mm |
12 Gs
1.2 mT
|
0.00 kg / 0.00 LBS
0.0 g / 0.0 N
|
safe |
| 30 mm |
4 Gs
0.4 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 5x3 / N38
| Distance (mm) | Friction coefficient | Pull Force (kg/lbs/g/N) |
|---|---|---|
| 0 mm | Stal (~0.2) |
0.17 kg / 0.37 LBS
168.0 g / 1.6 N
|
| 1 mm | Stal (~0.2) |
0.07 kg / 0.15 LBS
66.0 g / 0.6 N
|
| 2 mm | Stal (~0.2) |
0.02 kg / 0.04 LBS
20.0 g / 0.2 N
|
| 3 mm | Stal (~0.2) |
0.01 kg / 0.01 LBS
6.0 g / 0.1 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 (sliding) - behavior on slippery surfaces
MW 5x3 / N38
| Surface type | Friction coefficient / % Mocy | Max load (kg/lbs/g/N) |
|---|---|---|
| Raw steel |
µ = 0.3
30% Nominalnej Siły
|
0.25 kg / 0.56 LBS
252.0 g / 2.5 N
|
| Painted steel (standard) |
µ = 0.2
20% Nominalnej Siły
|
0.17 kg / 0.37 LBS
168.0 g / 1.6 N
|
| Oily/slippery steel |
µ = 0.1
10% Nominalnej Siły
|
0.08 kg / 0.19 LBS
84.0 g / 0.8 N
|
| Magnet with anti-slip rubber |
µ = 0.5
50% Nominalnej Siły
|
0.42 kg / 0.93 LBS
420.0 g / 4.1 N
|
Table 4: Material efficiency (saturation) - power losses
MW 5x3 / N38
| Steel thickness (mm) | % power | Real pull force (kg/lbs/g/N) |
|---|---|---|
| 0.5 mm |
|
0.08 kg / 0.19 LBS
84.0 g / 0.8 N
|
| 1 mm |
|
0.21 kg / 0.46 LBS
210.0 g / 2.1 N
|
| 2 mm |
|
0.42 kg / 0.93 LBS
420.0 g / 4.1 N
|
| 3 mm |
|
0.63 kg / 1.39 LBS
630.0 g / 6.2 N
|
| 5 mm |
|
0.84 kg / 1.85 LBS
840.0 g / 8.2 N
|
| 10 mm |
|
0.84 kg / 1.85 LBS
840.0 g / 8.2 N
|
| 11 mm |
|
0.84 kg / 1.85 LBS
840.0 g / 8.2 N
|
| 12 mm |
|
0.84 kg / 1.85 LBS
840.0 g / 8.2 N
|
Table 5: Working in heat (stability) - thermal limit
MW 5x3 / N38
| Ambient temp. (°C) | Power loss | Remaining pull (kg/lbs/g/N) | Status |
|---|---|---|---|
| 20 °C | 0.0% |
0.84 kg / 1.85 LBS
840.0 g / 8.2 N
|
OK |
| 40 °C | -2.2% |
0.82 kg / 1.81 LBS
821.5 g / 8.1 N
|
OK |
| 60 °C | -4.4% |
0.80 kg / 1.77 LBS
803.0 g / 7.9 N
|
OK |
| 80 °C | -6.6% |
0.78 kg / 1.73 LBS
784.6 g / 7.7 N
|
|
| 100 °C | -28.8% |
0.60 kg / 1.32 LBS
598.1 g / 5.9 N
|
Table 6: Two magnets (repulsion) - field range
MW 5x3 / N38
| Gap (mm) | Attraction (kg/lbs) (N-S) | Shear Force (kg/lbs/g/N) | Repulsion (kg/lbs) (N-N) |
|---|---|---|---|
| 0 mm |
2.73 kg / 6.01 LBS
5 700 Gs
|
0.41 kg / 0.90 LBS
409 g / 4.0 N
|
N/A |
| 1 mm |
1.77 kg / 3.91 LBS
7 658 Gs
|
0.27 kg / 0.59 LBS
266 g / 2.6 N
|
1.60 kg / 3.52 LBS
~0 Gs
|
| 2 mm |
1.06 kg / 2.33 LBS
5 910 Gs
|
0.16 kg / 0.35 LBS
159 g / 1.6 N
|
0.95 kg / 2.10 LBS
~0 Gs
|
| 3 mm |
0.60 kg / 1.33 LBS
4 460 Gs
|
0.09 kg / 0.20 LBS
90 g / 0.9 N
|
0.54 kg / 1.19 LBS
~0 Gs
|
| 5 mm |
0.19 kg / 0.42 LBS
2 520 Gs
|
0.03 kg / 0.06 LBS
29 g / 0.3 N
|
0.17 kg / 0.38 LBS
~0 Gs
|
| 10 mm |
0.02 kg / 0.04 LBS
745 Gs
|
0.00 kg / 0.01 LBS
3 g / 0.0 N
|
0.02 kg / 0.03 LBS
~0 Gs
|
| 20 mm |
0.00 kg / 0.00 LBS
147 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
12 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
7 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
5 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
3 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
2 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: Hazards (implants) - warnings
MW 5x3 / N38
| Object / Device | Limit (Gauss) / mT | Safe distance |
|---|---|---|
| Pacemaker | 5 Gs (0.5 mT) | 3.0 cm |
| Hearing aid | 10 Gs (1.0 mT) | 2.5 cm |
| Timepiece | 20 Gs (2.0 mT) | 2.0 cm |
| Mobile device | 40 Gs (4.0 mT) | 1.5 cm |
| Remote | 50 Gs (5.0 mT) | 1.5 cm |
| Payment card | 400 Gs (40.0 mT) | 0.5 cm |
| HDD hard drive | 600 Gs (60.0 mT) | 0.5 cm |
Table 8: Impact energy (kinetic energy) - warning
MW 5x3 / N38
| Start from (mm) | Speed (km/h) | Energy (J) | Predicted outcome |
|---|---|---|---|
| 10 mm |
44.07 km/h
(12.24 m/s)
|
0.03 J | |
| 30 mm |
76.32 km/h
(21.20 m/s)
|
0.10 J | |
| 50 mm |
98.53 km/h
(27.37 m/s)
|
0.16 J | |
| 100 mm |
139.35 km/h
(38.71 m/s)
|
0.33 J |
Table 9: Coating parameters (durability)
MW 5x3 / 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 5x3 / N38
| Parameter | Value | SI Unit / Description |
|---|---|---|
| Magnetic Flux | 942 Mx | 9.4 µWb |
| Pc Coefficient | 0.66 | High (Stable) |
Table 11: Underwater work (magnet fishing)
MW 5x3 / N38
| Environment | Effective steel pull | Effect |
|---|---|---|
| Air (land) | 0.84 kg | Standard |
| Water (riverbed) |
0.96 kg
(+0.12 kg buoyancy gain)
|
+14.5% |
1. Sliding resistance
*Caution: On a vertical wall, the magnet holds just ~20% of its max power.
2. Plate thickness effect
*Thin metal sheet (e.g. 0.5mm PC case) significantly reduces the holding force.
3. Temperature resistance
*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) = 0.66
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% |
Sustainability
| recyclability (EoL) | 100% |
| recycled raw materials | ~10% (pre-cons) |
| carbon footprint | low / zredukowany |
| waste code (EWC) | 16 02 16 |
View also proposals
Strengths as well as weaknesses of neodymium magnets.
Benefits
- They retain attractive force for around ten years – the loss is just ~1% (according to analyses),
- They are resistant to demagnetization induced by presence of other magnetic fields,
- By covering with a reflective layer of nickel, the element gains an elegant look,
- The surface of neodymium magnets generates a powerful magnetic field – this is one of their assets,
- Made from properly selected components, these magnets show impressive resistance to high heat, enabling them to function (depending on their shape) at temperatures up to 230°C and above...
- Thanks to the potential of free shaping and customization to individualized solutions, magnetic components can be produced in a variety of forms and dimensions, which makes them more universal,
- Universal use in high-tech industry – they find application in HDD drives, electric drive systems, medical devices, as well as complex engineering applications.
- Thanks to concentrated force, small magnets offer high operating force, in miniature format,
Cons
- At strong impacts they can break, therefore we recommend placing them in strong housings. A metal housing provides additional protection against damage, as well as increases the magnet's durability.
- Neodymium magnets demagnetize when exposed to high temperatures. After reaching 80°C, many of them experience permanent weakening of power (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
- Magnets exposed to a humid environment can corrode. Therefore during using outdoors, we advise using water-impermeable magnets made of rubber, plastic or other material resistant to moisture
- We recommend a housing - magnetic mount, due to difficulties in realizing threads inside the magnet and complex shapes.
- Possible danger to health – tiny shards of magnets pose a threat, in case of ingestion, which becomes key in the context of child safety. Additionally, tiny parts of these products are able to complicate diagnosis medical in case of swallowing.
- With budget limitations the cost of neodymium magnets is economically unviable,
Lifting parameters
Breakaway strength of the magnet in ideal conditions – what contributes to it?
- using a plate made of high-permeability steel, serving as a circuit closing element
- possessing a massiveness of min. 10 mm to ensure full flux closure
- with an ground contact surface
- without any clearance between the magnet and steel
- during pulling in a direction vertical to the mounting surface
- at ambient temperature approx. 20 degrees Celsius
Key elements affecting lifting force
- Space between magnet and steel – even a fraction of a millimeter of separation (caused e.g. by varnish or unevenness) drastically reduces the pulling force, often by half at just 0.5 mm.
- Force direction – catalog parameter refers to pulling vertically. When slipping, the magnet holds much less (typically approx. 20-30% of maximum force).
- Plate thickness – insufficiently thick sheet does not close the flux, causing part of the flux to be wasted into the air.
- Chemical composition of the base – low-carbon steel attracts best. Higher carbon content lower magnetic properties and holding force.
- Plate texture – ground elements ensure maximum contact, which increases field saturation. Uneven metal weaken the grip.
- Thermal environment – heating the magnet results in weakening of induction. It is worth remembering 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 perpendicular pulling force, whereas under parallel forces the load capacity is reduced by as much as 75%. Additionally, even a slight gap between the magnet’s surface and the plate decreases the lifting capacity.
Precautions when working with neodymium magnets
Mechanical processing
Dust produced during grinding of magnets is combustible. Avoid drilling into magnets unless you are an expert.
Bodily injuries
Mind your fingers. Two powerful magnets will join immediately with a force of massive weight, crushing everything in their path. Be careful!
Eye protection
Protect your eyes. Magnets can fracture upon violent connection, launching sharp fragments into the air. Wear goggles.
Avoid contact if allergic
Warning for allergy sufferers: The nickel-copper-nickel coating consists of nickel. If an allergic reaction happens, immediately stop handling magnets and use protective gear.
Safe operation
Use magnets with awareness. Their powerful strength can surprise even professionals. Plan your moves and do not underestimate their power.
GPS and phone interference
Note: neodymium magnets produce a field that confuses sensitive sensors. Keep a safe distance from your phone, tablet, and navigation systems.
Danger to the youngest
Absolutely keep magnets away from children. Risk of swallowing is significant, and the effects of magnets connecting inside the body are life-threatening.
Danger to pacemakers
Health Alert: Strong magnets can deactivate pacemakers and defibrillators. Do not approach if you have medical devices.
Electronic hazard
Device Safety: Strong magnets can ruin data carriers and sensitive devices (pacemakers, medical aids, mechanical watches).
Thermal limits
Do not overheat. Neodymium magnets are susceptible to heat. If you require operation above 80°C, ask us about special high-temperature series (H, SH, UH).
