MW 5x15 / N38 - cylindrical magnet
cylindrical magnet
Catalog no 010084
GTIN/EAN: 5906301810834
Diameter Ø
5 mm [±0,1 mm]
Height
15 mm [±0,1 mm]
Weight
2.21 g
Magnetization Direction
↑ axial
Load capacity
0.48 kg / 4.68 N
Magnetic Induction
610.03 mT / 6100 Gs
Coating
[NiCuNi] Nickel
1.107 ZŁ with VAT / pcs + price for transport
0.900 ZŁ net + 23% VAT / pcs
bulk discounts:
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Technical parameters of the product - MW 5x15 / N38 - cylindrical magnet
Specification / characteristics - MW 5x15 / N38 - cylindrical magnet
| properties | values |
|---|---|
| Cat. no. | 010084 |
| GTIN/EAN | 5906301810834 |
| Production/Distribution | Dhit sp. z o.o. |
| Country of origin | Poland / China / Germany |
| Customs code | 85059029 |
| Diameter Ø | 5 mm [±0,1 mm] |
| Height | 15 mm [±0,1 mm] |
| Weight | 2.21 g |
| Magnetization Direction | ↑ axial |
| Load capacity ~ ? | 0.48 kg / 4.68 N |
| Magnetic Induction ~ ? | 610.03 mT / 6100 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 |
Physical modeling of the magnet - technical parameters
The following data represent the result of a mathematical simulation. Values are based on algorithms for the material Nd2Fe14B. Real-world performance may differ. Treat these calculations as a supplementary guide during assembly planning.
Table 1: Static pull force (pull vs gap) - power drop
MW 5x15 / N38
| Distance (mm) | Induction (Gauss) / mT | Pull Force (kg/lbs/g/N) | Risk Status |
|---|---|---|---|
| 0 mm |
6091 Gs
609.1 mT
|
0.48 kg / 1.06 pounds
480.0 g / 4.7 N
|
safe |
| 1 mm |
3823 Gs
382.3 mT
|
0.19 kg / 0.42 pounds
189.1 g / 1.9 N
|
safe |
| 2 mm |
2261 Gs
226.1 mT
|
0.07 kg / 0.15 pounds
66.1 g / 0.6 N
|
safe |
| 3 mm |
1378 Gs
137.8 mT
|
0.02 kg / 0.05 pounds
24.6 g / 0.2 N
|
safe |
| 5 mm |
607 Gs
60.7 mT
|
0.00 kg / 0.01 pounds
4.8 g / 0.0 N
|
safe |
| 10 mm |
154 Gs
15.4 mT
|
0.00 kg / 0.00 pounds
0.3 g / 0.0 N
|
safe |
| 15 mm |
63 Gs
6.3 mT
|
0.00 kg / 0.00 pounds
0.1 g / 0.0 N
|
safe |
| 20 mm |
32 Gs
3.2 mT
|
0.00 kg / 0.00 pounds
0.0 g / 0.0 N
|
safe |
| 30 mm |
12 Gs
1.2 mT
|
0.00 kg / 0.00 pounds
0.0 g / 0.0 N
|
safe |
| 50 mm |
3 Gs
0.3 mT
|
0.00 kg / 0.00 pounds
0.0 g / 0.0 N
|
safe |
Table 2: Slippage load (vertical surface)
MW 5x15 / N38
| Distance (mm) | Friction coefficient | Pull Force (kg/lbs/g/N) |
|---|---|---|
| 0 mm | Stal (~0.2) |
0.10 kg / 0.21 pounds
96.0 g / 0.9 N
|
| 1 mm | Stal (~0.2) |
0.04 kg / 0.08 pounds
38.0 g / 0.4 N
|
| 2 mm | Stal (~0.2) |
0.01 kg / 0.03 pounds
14.0 g / 0.1 N
|
| 3 mm | Stal (~0.2) |
0.00 kg / 0.01 pounds
4.0 g / 0.0 N
|
| 5 mm | Stal (~0.2) |
0.00 kg / 0.00 pounds
0.0 g / 0.0 N
|
| 10 mm | Stal (~0.2) |
0.00 kg / 0.00 pounds
0.0 g / 0.0 N
|
| 15 mm | Stal (~0.2) |
0.00 kg / 0.00 pounds
0.0 g / 0.0 N
|
| 20 mm | Stal (~0.2) |
0.00 kg / 0.00 pounds
0.0 g / 0.0 N
|
| 30 mm | Stal (~0.2) |
0.00 kg / 0.00 pounds
0.0 g / 0.0 N
|
| 50 mm | Stal (~0.2) |
0.00 kg / 0.00 pounds
0.0 g / 0.0 N
|
Table 3: Vertical assembly (sliding) - behavior on slippery surfaces
MW 5x15 / N38
| Surface type | Friction coefficient / % Mocy | Max load (kg/lbs/g/N) |
|---|---|---|
| Raw steel |
µ = 0.3
30% Nominalnej Siły
|
0.14 kg / 0.32 pounds
144.0 g / 1.4 N
|
| Painted steel (standard) |
µ = 0.2
20% Nominalnej Siły
|
0.10 kg / 0.21 pounds
96.0 g / 0.9 N
|
| Oily/slippery steel |
µ = 0.1
10% Nominalnej Siły
|
0.05 kg / 0.11 pounds
48.0 g / 0.5 N
|
| Magnet with anti-slip rubber |
µ = 0.5
50% Nominalnej Siły
|
0.24 kg / 0.53 pounds
240.0 g / 2.4 N
|
Table 4: Material efficiency (substrate influence) - sheet metal selection
MW 5x15 / N38
| Steel thickness (mm) | % power | Real pull force (kg/lbs/g/N) |
|---|---|---|
| 0.5 mm |
|
0.05 kg / 0.11 pounds
48.0 g / 0.5 N
|
| 1 mm |
|
0.12 kg / 0.26 pounds
120.0 g / 1.2 N
|
| 2 mm |
|
0.24 kg / 0.53 pounds
240.0 g / 2.4 N
|
| 3 mm |
|
0.36 kg / 0.79 pounds
360.0 g / 3.5 N
|
| 5 mm |
|
0.48 kg / 1.06 pounds
480.0 g / 4.7 N
|
| 10 mm |
|
0.48 kg / 1.06 pounds
480.0 g / 4.7 N
|
| 11 mm |
|
0.48 kg / 1.06 pounds
480.0 g / 4.7 N
|
| 12 mm |
|
0.48 kg / 1.06 pounds
480.0 g / 4.7 N
|
Table 5: Thermal resistance (material behavior) - resistance threshold
MW 5x15 / N38
| Ambient temp. (°C) | Power loss | Remaining pull (kg/lbs/g/N) | Status |
|---|---|---|---|
| 20 °C | 0.0% |
0.48 kg / 1.06 pounds
480.0 g / 4.7 N
|
OK |
| 40 °C | -2.2% |
0.47 kg / 1.03 pounds
469.4 g / 4.6 N
|
OK |
| 60 °C | -4.4% |
0.46 kg / 1.01 pounds
458.9 g / 4.5 N
|
OK |
| 80 °C | -6.6% |
0.45 kg / 0.99 pounds
448.3 g / 4.4 N
|
|
| 100 °C | -28.8% |
0.34 kg / 0.75 pounds
341.8 g / 3.4 N
|
Table 6: Magnet-Magnet interaction (attraction) - field range
MW 5x15 / N38
| Gap (mm) | Attraction (kg/lbs) (N-S) | Sliding Force (kg/lbs/g/N) | Repulsion (kg/lbs) (N-N) |
|---|---|---|---|
| 0 mm |
4.49 kg / 9.90 pounds
6 154 Gs
|
0.67 kg / 1.49 pounds
674 g / 6.6 N
|
N/A |
| 1 mm |
2.91 kg / 6.42 pounds
9 810 Gs
|
0.44 kg / 0.96 pounds
437 g / 4.3 N
|
2.62 kg / 5.78 pounds
~0 Gs
|
| 2 mm |
1.77 kg / 3.90 pounds
7 646 Gs
|
0.27 kg / 0.59 pounds
265 g / 2.6 N
|
1.59 kg / 3.51 pounds
~0 Gs
|
| 3 mm |
1.05 kg / 2.31 pounds
5 880 Gs
|
0.16 kg / 0.35 pounds
157 g / 1.5 N
|
0.94 kg / 2.08 pounds
~0 Gs
|
| 5 mm |
0.37 kg / 0.82 pounds
3 507 Gs
|
0.06 kg / 0.12 pounds
56 g / 0.5 N
|
0.34 kg / 0.74 pounds
~0 Gs
|
| 10 mm |
0.04 kg / 0.10 pounds
1 213 Gs
|
0.01 kg / 0.01 pounds
7 g / 0.1 N
|
0.04 kg / 0.09 pounds
~0 Gs
|
| 20 mm |
0.00 kg / 0.01 pounds
309 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
37 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
24 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
16 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
11 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
8 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
6 Gs
|
0.00 kg / 0.00 pounds
0 g / 0.0 N
|
0.00 kg / 0.00 pounds
~0 Gs
|
Table 7: Safety (HSE) (implants) - warnings
MW 5x15 / N38
| Object / Device | Limit (Gauss) / mT | Safe distance |
|---|---|---|
| Pacemaker | 5 Gs (0.5 mT) | 4.5 cm |
| Hearing aid | 10 Gs (1.0 mT) | 3.5 cm |
| Mechanical watch | 20 Gs (2.0 mT) | 2.5 cm |
| Phone / Smartphone | 40 Gs (4.0 mT) | 2.0 cm |
| Car key | 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 5x15 / N38
| Start from (mm) | Speed (km/h) | Energy (J) | Predicted outcome |
|---|---|---|---|
| 10 mm |
14.87 km/h
(4.13 m/s)
|
0.02 J | |
| 30 mm |
25.74 km/h
(7.15 m/s)
|
0.06 J | |
| 50 mm |
33.23 km/h
(9.23 m/s)
|
0.09 J | |
| 100 mm |
47.00 km/h
(13.06 m/s)
|
0.19 J |
Table 9: Corrosion resistance
MW 5x15 / 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 5x15 / N38
| Parameter | Value | SI Unit / Description |
|---|---|---|
| Magnetic Flux | 1 382 Mx | 13.8 µWb |
| Pc Coefficient | 1.38 | High (Stable) |
Table 11: Submerged application
MW 5x15 / N38
| Environment | Effective steel pull | Effect |
|---|---|---|
| Air (land) | 0.48 kg | Standard |
| Water (riverbed) |
0.55 kg
(+0.07 kg buoyancy gain)
|
+14.5% |
1. Shear force
*Caution: On a vertical wall, the magnet retains just ~20% of its nominal pull.
2. Efficiency vs thickness
*Thin metal sheet (e.g. 0.5mm PC case) significantly limits the holding force.
3. Power loss vs temp
*For N38 material, the critical limit is 80°C.
4. Demagnetization curve and operating point (B-H)
chart generated for the permeance coefficient Pc (Permeance Coefficient) = 1.38
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% |
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
Advantages as well as disadvantages of Nd2Fe14B magnets.
Pros
- They retain full power for nearly ten years – the drop is just ~1% (in theory),
- Neodymium magnets are highly resistant to demagnetization caused by magnetic disturbances,
- A magnet with a smooth silver surface has an effective appearance,
- They show high magnetic induction at the operating surface, which improves attraction properties,
- Due to their durability and thermal resistance, neodymium magnets can operate (depending on the form) even at high temperatures reaching 230°C or more...
- Possibility of individual forming as well as adapting to defined conditions,
- Wide application in modern technologies – they are utilized in mass storage devices, electric motors, precision medical tools, also technologically advanced constructions.
- Compactness – despite small sizes they generate large force, making them ideal for precision applications
Limitations
- At strong impacts they can crack, therefore we recommend placing them in special holders. A metal housing provides additional protection against damage and increases the magnet's durability.
- When exposed to high temperature, neodymium magnets suffer a drop in power. Often, when the temperature exceeds 80°C, their strength decreases (depending on the size and 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 secure oxidation and corrosion.
- We suggest casing - magnetic mechanism, due to difficulties in producing threads inside the magnet and complicated shapes.
- Health risk to health – tiny shards of magnets pose a threat, if swallowed, which is particularly important in the context of child safety. Additionally, small components of these devices are able to disrupt the diagnostic process medical when they are in the body.
- Due to neodymium price, their price exceeds standard values,
Holding force characteristics
Detachment force of the magnet in optimal conditions – what affects it?
- on a plate made of mild steel, effectively closing the magnetic flux
- with a thickness minimum 10 mm
- with a plane perfectly flat
- without the slightest insulating layer between the magnet and steel
- during detachment in a direction perpendicular to the mounting surface
- at ambient temperature approx. 20 degrees Celsius
Determinants of lifting force in real conditions
- Air gap (between the magnet and the plate), as even a tiny distance (e.g. 0.5 mm) results in a decrease in force by up to 50% (this also applies to varnish, rust or debris).
- Angle of force application – maximum parameter is reached only during pulling at a 90° angle. The force required to slide of the magnet along the plate is typically several times smaller (approx. 1/5 of the lifting capacity).
- Element thickness – for full efficiency, the steel must be sufficiently thick. Thin sheet restricts the attraction force (the magnet "punches through" it).
- Plate material – low-carbon steel attracts best. Higher carbon content lower magnetic properties and lifting capacity.
- Plate texture – ground elements ensure maximum contact, which improves field saturation. Uneven metal weaken the grip.
- Temperature – heating the magnet results in weakening of induction. It is worth remembering the maximum operating temperature for a given model.
Lifting capacity was measured using a smooth steel plate of suitable thickness (min. 20 mm), under vertically applied force, however under shearing force the load capacity is reduced by as much as fivefold. Additionally, even a minimal clearance between the magnet and the plate reduces the holding force.
Safety rules for work with neodymium magnets
Combustion hazard
Fire hazard: Neodymium dust is highly flammable. Do not process magnets without safety gear as this may cause fire.
Avoid contact if allergic
Medical facts indicate that the nickel plating (the usual finish) is a common allergen. If you have an allergy, avoid touching magnets with bare hands or choose versions in plastic housing.
Adults only
Product intended for adults. Tiny parts pose a choking risk, causing intestinal necrosis. Keep away from kids and pets.
Conscious usage
Exercise caution. Neodymium magnets act from a long distance and snap with huge force, often quicker than you can react.
Keep away from electronics
A powerful magnetic field disrupts the functioning of compasses in phones and GPS navigation. Keep magnets close to a smartphone to avoid damaging the sensors.
Fragile material
Protect your eyes. Magnets can fracture upon uncontrolled impact, launching sharp fragments into the air. Wear goggles.
Finger safety
Danger of trauma: The pulling power is so immense that it can result in hematomas, crushing, and even bone fractures. Protective gloves are recommended.
Warning for heart patients
Warning for patients: Strong magnetic fields disrupt electronics. Maintain minimum 30 cm distance or ask another person to work with the magnets.
Thermal limits
Do not overheat. NdFeB magnets are susceptible to temperature. If you need operation above 80°C, inquire about special high-temperature series (H, SH, UH).
Protect data
Intense magnetic fields can corrupt files on payment cards, HDDs, and other magnetic media. Maintain a gap of at least 10 cm.
