MW 15x1 / N38 - cylindrical magnet
cylindrical magnet
Catalog no 010026
GTIN/EAN: 5906301810254
Diameter Ø
15 mm [±0,1 mm]
Height
1 mm [±0,1 mm]
Weight
1.33 g
Magnetization Direction
↑ axial
Load capacity
0.44 kg / 4.29 N
Magnetic Induction
81.93 mT / 819 Gs
Coating
[NiCuNi] Nickel
0.800 ZŁ with VAT / pcs + price for transport
0.650 ZŁ net + 23% VAT / pcs
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Physical properties - MW 15x1 / N38 - cylindrical magnet
Specification / characteristics - MW 15x1 / N38 - cylindrical magnet
| properties | values |
|---|---|
| Cat. no. | 010026 |
| GTIN/EAN | 5906301810254 |
| Production/Distribution | Dhit sp. z o.o. |
| Country of origin | Poland / China / Germany |
| Customs code | 85059029 |
| Diameter Ø | 15 mm [±0,1 mm] |
| Height | 1 mm [±0,1 mm] |
| Weight | 1.33 g |
| Magnetization Direction | ↑ axial |
| Load capacity ~ ? | 0.44 kg / 4.29 N |
| Magnetic Induction ~ ? | 81.93 mT / 819 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 |
Engineering modeling of the product - report
The following values are the result of a physical simulation. Results rely on algorithms for the material Nd2Fe14B. Actual performance may deviate from the simulation results. Please consider these calculations as a preliminary roadmap for designers.
Table 1: Static pull force (pull vs distance) - characteristics
MW 15x1 / N38
| Distance (mm) | Induction (Gauss) / mT | Pull Force (kg/lbs/g/N) | Risk Status |
|---|---|---|---|
| 0 mm |
819 Gs
81.9 mT
|
0.44 kg / 0.97 pounds
440.0 g / 4.3 N
|
safe |
| 1 mm |
778 Gs
77.8 mT
|
0.40 kg / 0.88 pounds
397.0 g / 3.9 N
|
safe |
| 2 mm |
705 Gs
70.5 mT
|
0.33 kg / 0.72 pounds
326.0 g / 3.2 N
|
safe |
| 3 mm |
615 Gs
61.5 mT
|
0.25 kg / 0.55 pounds
248.0 g / 2.4 N
|
safe |
| 5 mm |
434 Gs
43.4 mT
|
0.12 kg / 0.27 pounds
123.5 g / 1.2 N
|
safe |
| 10 mm |
163 Gs
16.3 mT
|
0.02 kg / 0.04 pounds
17.3 g / 0.2 N
|
safe |
| 15 mm |
68 Gs
6.8 mT
|
0.00 kg / 0.01 pounds
3.1 g / 0.0 N
|
safe |
| 20 mm |
34 Gs
3.4 mT
|
0.00 kg / 0.00 pounds
0.7 g / 0.0 N
|
safe |
| 30 mm |
11 Gs
1.1 mT
|
0.00 kg / 0.00 pounds
0.1 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 force (vertical surface)
MW 15x1 / N38
| Distance (mm) | Friction coefficient | Pull Force (kg/lbs/g/N) |
|---|---|---|
| 0 mm | Stal (~0.2) |
0.09 kg / 0.19 pounds
88.0 g / 0.9 N
|
| 1 mm | Stal (~0.2) |
0.08 kg / 0.18 pounds
80.0 g / 0.8 N
|
| 2 mm | Stal (~0.2) |
0.07 kg / 0.15 pounds
66.0 g / 0.6 N
|
| 3 mm | Stal (~0.2) |
0.05 kg / 0.11 pounds
50.0 g / 0.5 N
|
| 5 mm | Stal (~0.2) |
0.02 kg / 0.05 pounds
24.0 g / 0.2 N
|
| 10 mm | Stal (~0.2) |
0.00 kg / 0.01 pounds
4.0 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: Wall mounting (shearing) - vertical pull
MW 15x1 / N38
| Surface type | Friction coefficient / % Mocy | Max load (kg/lbs/g/N) |
|---|---|---|
| Raw steel |
µ = 0.3
30% Nominalnej Siły
|
0.13 kg / 0.29 pounds
132.0 g / 1.3 N
|
| Painted steel (standard) |
µ = 0.2
20% Nominalnej Siły
|
0.09 kg / 0.19 pounds
88.0 g / 0.9 N
|
| Oily/slippery steel |
µ = 0.1
10% Nominalnej Siły
|
0.04 kg / 0.10 pounds
44.0 g / 0.4 N
|
| Magnet with anti-slip rubber |
µ = 0.5
50% Nominalnej Siły
|
0.22 kg / 0.49 pounds
220.0 g / 2.2 N
|
Table 4: Material efficiency (saturation) - sheet metal selection
MW 15x1 / N38
| Steel thickness (mm) | % power | Real pull force (kg/lbs/g/N) |
|---|---|---|
| 0.5 mm |
|
0.04 kg / 0.10 pounds
44.0 g / 0.4 N
|
| 1 mm |
|
0.11 kg / 0.24 pounds
110.0 g / 1.1 N
|
| 2 mm |
|
0.22 kg / 0.49 pounds
220.0 g / 2.2 N
|
| 3 mm |
|
0.33 kg / 0.73 pounds
330.0 g / 3.2 N
|
| 5 mm |
|
0.44 kg / 0.97 pounds
440.0 g / 4.3 N
|
| 10 mm |
|
0.44 kg / 0.97 pounds
440.0 g / 4.3 N
|
| 11 mm |
|
0.44 kg / 0.97 pounds
440.0 g / 4.3 N
|
| 12 mm |
|
0.44 kg / 0.97 pounds
440.0 g / 4.3 N
|
Table 5: Working in heat (material behavior) - resistance threshold
MW 15x1 / N38
| Ambient temp. (°C) | Power loss | Remaining pull (kg/lbs/g/N) | Status |
|---|---|---|---|
| 20 °C | 0.0% |
0.44 kg / 0.97 pounds
440.0 g / 4.3 N
|
OK |
| 40 °C | -2.2% |
0.43 kg / 0.95 pounds
430.3 g / 4.2 N
|
OK |
| 60 °C | -4.4% |
0.42 kg / 0.93 pounds
420.6 g / 4.1 N
|
|
| 80 °C | -6.6% |
0.41 kg / 0.91 pounds
411.0 g / 4.0 N
|
|
| 100 °C | -28.8% |
0.31 kg / 0.69 pounds
313.3 g / 3.1 N
|
Table 6: Magnet-Magnet interaction (attraction) - field range
MW 15x1 / N38
| Gap (mm) | Attraction (kg/lbs) (N-S) | Lateral Force (kg/lbs/g/N) | Repulsion (kg/lbs) (N-N) |
|---|---|---|---|
| 0 mm |
0.73 kg / 1.61 pounds
1 597 Gs
|
0.11 kg / 0.24 pounds
110 g / 1.1 N
|
N/A |
| 1 mm |
0.70 kg / 1.55 pounds
1 607 Gs
|
0.11 kg / 0.23 pounds
106 g / 1.0 N
|
0.63 kg / 1.40 pounds
~0 Gs
|
| 2 mm |
0.66 kg / 1.45 pounds
1 556 Gs
|
0.10 kg / 0.22 pounds
99 g / 1.0 N
|
0.59 kg / 1.31 pounds
~0 Gs
|
| 3 mm |
0.60 kg / 1.33 pounds
1 489 Gs
|
0.09 kg / 0.20 pounds
91 g / 0.9 N
|
0.54 kg / 1.20 pounds
~0 Gs
|
| 5 mm |
0.48 kg / 1.05 pounds
1 323 Gs
|
0.07 kg / 0.16 pounds
71 g / 0.7 N
|
0.43 kg / 0.95 pounds
~0 Gs
|
| 10 mm |
0.21 kg / 0.45 pounds
868 Gs
|
0.03 kg / 0.07 pounds
31 g / 0.3 N
|
0.18 kg / 0.41 pounds
~0 Gs
|
| 20 mm |
0.03 kg / 0.06 pounds
325 Gs
|
0.00 kg / 0.01 pounds
4 g / 0.0 N
|
0.03 kg / 0.06 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
23 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
15 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
10 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
7 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
5 Gs
|
0.00 kg / 0.00 pounds
0 g / 0.0 N
|
0.00 kg / 0.00 pounds
~0 Gs
|
Table 7: Safety (HSE) (electronics) - warnings
MW 15x1 / N38
| Object / Device | Limit (Gauss) / mT | Safe distance |
|---|---|---|
| Pacemaker | 5 Gs (0.5 mT) | 4.0 cm |
| Hearing aid | 10 Gs (1.0 mT) | 3.5 cm |
| Timepiece | 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) | 0.5 cm |
Table 8: Dynamics (cracking risk) - warning
MW 15x1 / N38
| Start from (mm) | Speed (km/h) | Energy (J) | Predicted outcome |
|---|---|---|---|
| 10 mm |
18.79 km/h
(5.22 m/s)
|
0.02 J | |
| 30 mm |
31.78 km/h
(8.83 m/s)
|
0.05 J | |
| 50 mm |
41.02 km/h
(11.39 m/s)
|
0.09 J | |
| 100 mm |
58.01 km/h
(16.11 m/s)
|
0.17 J |
Table 9: Coating parameters (durability)
MW 15x1 / 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 15x1 / N38
| Parameter | Value | SI Unit / Description |
|---|---|---|
| Magnetic Flux | 2 025 Mx | 20.3 µWb |
| Pc Coefficient | 0.11 | Low (Flat) |
Table 11: Submerged application
MW 15x1 / N38
| Environment | Effective steel pull | Effect |
|---|---|---|
| Air (land) | 0.44 kg | Standard |
| Water (riverbed) |
0.50 kg
(+0.06 kg buoyancy gain)
|
+14.5% |
1. Wall mount (shear)
*Note: On a vertical wall, the magnet retains just ~20% of its nominal pull.
2. Plate thickness effect
*Thin steel (e.g. 0.5mm PC case) drastically reduces the holding force.
3. Temperature resistance
*For N38 grade, the critical limit is 80°C.
4. Demagnetization curve and operating point (B-H)
chart generated for the permeance coefficient Pc (Permeance Coefficient) = 0.11
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 |
See also products
Advantages as well as disadvantages of rare earth magnets.
Advantages
- Their strength is durable, and after approximately 10 years it drops only by ~1% (theoretically),
- They maintain their magnetic properties even under close interference source,
- By covering with a smooth coating of nickel, the element presents an aesthetic look,
- The surface of neodymium magnets generates a strong magnetic field – this is one of their assets,
- Thanks to resistance to high temperature, they are able to function (depending on the shape) even at temperatures up to 230°C and higher...
- Possibility of accurate shaping and optimizing to defined requirements,
- Versatile presence in innovative solutions – they are commonly used in computer drives, brushless drives, diagnostic systems, and other advanced devices.
- Compactness – despite small sizes they generate large force, making them ideal for precision applications
Limitations
- Brittleness is one of their disadvantages. Upon intense impact they can break. We advise keeping them in a special holder, which not only protects them against impacts but also raises their durability
- 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
- They rust in a humid environment. For use outdoors we recommend using waterproof magnets e.g. in rubber, plastic
- Due to limitations in creating threads and complex forms in magnets, we recommend using casing - magnetic mount.
- Possible danger to health – tiny shards of magnets pose a threat, if swallowed, which becomes key in the context of child health protection. Additionally, tiny parts of these products can be problematic in diagnostics medical when they are in the body.
- Due to complex production process, their price exceeds standard values,
Holding force characteristics
Maximum holding power of the magnet – what affects it?
- using a base made of low-carbon steel, serving as a circuit closing element
- possessing a thickness of at least 10 mm to ensure full flux closure
- characterized by smoothness
- without the slightest air gap between the magnet and steel
- for force acting at a right angle (pull-off, not shear)
- in temp. approx. 20°C
Lifting capacity in real conditions – factors
- Gap between surfaces – every millimeter of distance (caused e.g. by varnish or unevenness) significantly weakens the pulling force, often by half at just 0.5 mm.
- Pull-off angle – remember that the magnet has greatest strength perpendicularly. Under shear forces, the holding force drops drastically, often to levels of 20-30% of the nominal value.
- Substrate thickness – to utilize 100% power, the steel must be adequately massive. Thin sheet restricts the lifting capacity (the magnet "punches through" it).
- Metal type – not every steel reacts the same. High carbon content weaken the attraction effect.
- Surface quality – the more even the surface, the larger the contact zone and stronger the hold. Roughness creates an air distance.
- Temperature – temperature increase causes a temporary drop of induction. Check the thermal limit for a given model.
Lifting capacity was measured by applying a steel plate with a smooth surface of suitable thickness (min. 20 mm), under perpendicular detachment force, in contrast under shearing force the load capacity is reduced by as much as 75%. Additionally, even a small distance between the magnet and the plate reduces the load capacity.
Precautions when working with NdFeB magnets
Magnets are brittle
Despite metallic appearance, the material is brittle and cannot withstand shocks. Do not hit, as the magnet may shatter into hazardous fragments.
Immense force
Handle magnets consciously. Their immense force can surprise even experienced users. Stay alert and respect their force.
Do not overheat magnets
Do not overheat. NdFeB magnets are susceptible to heat. If you require operation above 80°C, ask us about HT versions (H, SH, UH).
Health Danger
Life threat: Neodymium magnets can deactivate heart devices and defibrillators. Do not approach if you have medical devices.
Magnetic interference
An intense magnetic field disrupts the functioning of magnetometers in phones and navigation systems. Do not bring magnets close to a device to avoid breaking the sensors.
Mechanical processing
Powder produced during machining of magnets is flammable. Do not drill into magnets unless you are an expert.
Sensitization to coating
Studies show that nickel (standard magnet coating) is a strong allergen. If your skin reacts to metals, avoid touching magnets with bare hands and select encased magnets.
Pinching danger
Big blocks can break fingers instantly. Under no circumstances put your hand betwixt two attracting surfaces.
Safe distance
Do not bring magnets close to a purse, laptop, or screen. The magnetism can destroy these devices and erase data from cards.
Adults only
Adult use only. Small elements can be swallowed, leading to severe trauma. Keep away from kids and pets.
