MW 15x10 / N38 - cylindrical magnet
cylindrical magnet
Catalog no 010027
GTIN/EAN: 5906301810261
Diameter Ø
15 mm [±0,1 mm]
Height
10 mm [±0,1 mm]
Weight
13.25 g
Magnetization Direction
↑ axial
Load capacity
7.70 kg / 75.55 N
Magnetic Induction
495.60 mT / 4956 Gs
Coating
[NiCuNi] Nickel
4.51 ZŁ with VAT / pcs + price for transport
3.67 ZŁ net + 23% VAT / pcs
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Technical - MW 15x10 / N38 - cylindrical magnet
Specification / characteristics - MW 15x10 / N38 - cylindrical magnet
| properties | values |
|---|---|
| Cat. no. | 010027 |
| GTIN/EAN | 5906301810261 |
| Production/Distribution | Dhit sp. z o.o. |
| Country of origin | Poland / China / Germany |
| Customs code | 85059029 |
| Diameter Ø | 15 mm [±0,1 mm] |
| Height | 10 mm [±0,1 mm] |
| Weight | 13.25 g |
| Magnetization Direction | ↑ axial |
| Load capacity ~ ? | 7.70 kg / 75.55 N |
| Magnetic Induction ~ ? | 495.60 mT / 4956 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 modeling of the assembly - report
The following data represent the result of a mathematical analysis. Results are based on algorithms for the class Nd2Fe14B. Real-world conditions may deviate from the simulation results. Treat these calculations as a reference point for designers.
Table 1: Static force (pull vs gap) - interaction chart
MW 15x10 / N38
| Distance (mm) | Induction (Gauss) / mT | Pull Force (kg/lbs/g/N) | Risk Status |
|---|---|---|---|
| 0 mm |
4954 Gs
495.4 mT
|
7.70 kg / 16.98 LBS
7700.0 g / 75.5 N
|
warning |
| 1 mm |
4303 Gs
430.3 mT
|
5.81 kg / 12.81 LBS
5810.9 g / 57.0 N
|
warning |
| 2 mm |
3660 Gs
366.0 mT
|
4.20 kg / 9.27 LBS
4203.8 g / 41.2 N
|
warning |
| 3 mm |
3068 Gs
306.8 mT
|
2.95 kg / 6.51 LBS
2953.2 g / 29.0 N
|
warning |
| 5 mm |
2106 Gs
210.6 mT
|
1.39 kg / 3.07 LBS
1392.2 g / 13.7 N
|
safe |
| 10 mm |
845 Gs
84.5 mT
|
0.22 kg / 0.49 LBS
224.2 g / 2.2 N
|
safe |
| 15 mm |
393 Gs
39.3 mT
|
0.05 kg / 0.11 LBS
48.5 g / 0.5 N
|
safe |
| 20 mm |
210 Gs
21.0 mT
|
0.01 kg / 0.03 LBS
13.8 g / 0.1 N
|
safe |
| 30 mm |
79 Gs
7.9 mT
|
0.00 kg / 0.00 LBS
2.0 g / 0.0 N
|
safe |
| 50 mm |
21 Gs
2.1 mT
|
0.00 kg / 0.00 LBS
0.1 g / 0.0 N
|
safe |
Table 2: Shear capacity (wall)
MW 15x10 / N38
| Distance (mm) | Friction coefficient | Pull Force (kg/lbs/g/N) |
|---|---|---|
| 0 mm | Stal (~0.2) |
1.54 kg / 3.40 LBS
1540.0 g / 15.1 N
|
| 1 mm | Stal (~0.2) |
1.16 kg / 2.56 LBS
1162.0 g / 11.4 N
|
| 2 mm | Stal (~0.2) |
0.84 kg / 1.85 LBS
840.0 g / 8.2 N
|
| 3 mm | Stal (~0.2) |
0.59 kg / 1.30 LBS
590.0 g / 5.8 N
|
| 5 mm | Stal (~0.2) |
0.28 kg / 0.61 LBS
278.0 g / 2.7 N
|
| 10 mm | Stal (~0.2) |
0.04 kg / 0.10 LBS
44.0 g / 0.4 N
|
| 15 mm | Stal (~0.2) |
0.01 kg / 0.02 LBS
10.0 g / 0.1 N
|
| 20 mm | Stal (~0.2) |
0.00 kg / 0.00 LBS
2.0 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: Wall mounting (sliding) - behavior on slippery surfaces
MW 15x10 / N38
| Surface type | Friction coefficient / % Mocy | Max load (kg/lbs/g/N) |
|---|---|---|
| Raw steel |
µ = 0.3
30% Nominalnej Siły
|
2.31 kg / 5.09 LBS
2310.0 g / 22.7 N
|
| Painted steel (standard) |
µ = 0.2
20% Nominalnej Siły
|
1.54 kg / 3.40 LBS
1540.0 g / 15.1 N
|
| Oily/slippery steel |
µ = 0.1
10% Nominalnej Siły
|
0.77 kg / 1.70 LBS
770.0 g / 7.6 N
|
| Magnet with anti-slip rubber |
µ = 0.5
50% Nominalnej Siły
|
3.85 kg / 8.49 LBS
3850.0 g / 37.8 N
|
Table 4: Material efficiency (saturation) - power losses
MW 15x10 / N38
| Steel thickness (mm) | % power | Real pull force (kg/lbs/g/N) |
|---|---|---|
| 0.5 mm |
|
0.77 kg / 1.70 LBS
770.0 g / 7.6 N
|
| 1 mm |
|
1.93 kg / 4.24 LBS
1925.0 g / 18.9 N
|
| 2 mm |
|
3.85 kg / 8.49 LBS
3850.0 g / 37.8 N
|
| 3 mm |
|
5.78 kg / 12.73 LBS
5775.0 g / 56.7 N
|
| 5 mm |
|
7.70 kg / 16.98 LBS
7700.0 g / 75.5 N
|
| 10 mm |
|
7.70 kg / 16.98 LBS
7700.0 g / 75.5 N
|
| 11 mm |
|
7.70 kg / 16.98 LBS
7700.0 g / 75.5 N
|
| 12 mm |
|
7.70 kg / 16.98 LBS
7700.0 g / 75.5 N
|
Table 5: Working in heat (material behavior) - thermal limit
MW 15x10 / N38
| Ambient temp. (°C) | Power loss | Remaining pull (kg/lbs/g/N) | Status |
|---|---|---|---|
| 20 °C | 0.0% |
7.70 kg / 16.98 LBS
7700.0 g / 75.5 N
|
OK |
| 40 °C | -2.2% |
7.53 kg / 16.60 LBS
7530.6 g / 73.9 N
|
OK |
| 60 °C | -4.4% |
7.36 kg / 16.23 LBS
7361.2 g / 72.2 N
|
OK |
| 80 °C | -6.6% |
7.19 kg / 15.86 LBS
7191.8 g / 70.6 N
|
|
| 100 °C | -28.8% |
5.48 kg / 12.09 LBS
5482.4 g / 53.8 N
|
Table 6: Two magnets (repulsion) - field collision
MW 15x10 / N38
| Gap (mm) | Attraction (kg/lbs) (N-S) | Sliding Force (kg/lbs/g/N) | Repulsion (kg/lbs) (N-N) |
|---|---|---|---|
| 0 mm |
26.73 kg / 58.93 LBS
5 797 Gs
|
4.01 kg / 8.84 LBS
4010 g / 39.3 N
|
N/A |
| 1 mm |
23.38 kg / 51.55 LBS
9 265 Gs
|
3.51 kg / 7.73 LBS
3507 g / 34.4 N
|
21.04 kg / 46.39 LBS
~0 Gs
|
| 2 mm |
20.17 kg / 44.48 LBS
8 606 Gs
|
3.03 kg / 6.67 LBS
3026 g / 29.7 N
|
18.16 kg / 40.03 LBS
~0 Gs
|
| 3 mm |
17.23 kg / 37.99 LBS
7 955 Gs
|
2.59 kg / 5.70 LBS
2585 g / 25.4 N
|
15.51 kg / 34.19 LBS
~0 Gs
|
| 5 mm |
12.27 kg / 27.05 LBS
6 712 Gs
|
1.84 kg / 4.06 LBS
1840 g / 18.1 N
|
11.04 kg / 24.34 LBS
~0 Gs
|
| 10 mm |
4.83 kg / 10.66 LBS
4 213 Gs
|
0.73 kg / 1.60 LBS
725 g / 7.1 N
|
4.35 kg / 9.59 LBS
~0 Gs
|
| 20 mm |
0.78 kg / 1.72 LBS
1 690 Gs
|
0.12 kg / 0.26 LBS
117 g / 1.1 N
|
0.70 kg / 1.54 LBS
~0 Gs
|
| 50 mm |
0.02 kg / 0.04 LBS
248 Gs
|
0.00 kg / 0.01 LBS
3 g / 0.0 N
|
0.02 kg / 0.03 LBS
~0 Gs
|
| 60 mm |
0.01 kg / 0.01 LBS
158 Gs
|
0.00 kg / 0.00 LBS
1 g / 0.0 N
|
0.00 kg / 0.00 LBS
~0 Gs
|
| 70 mm |
0.00 kg / 0.01 LBS
107 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
75 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
55 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
41 Gs
|
0.00 kg / 0.00 LBS
0 g / 0.0 N
|
0.00 kg / 0.00 LBS
~0 Gs
|
Table 7: Hazards (electronics) - warnings
MW 15x10 / N38
| Object / Device | Limit (Gauss) / mT | Safe distance |
|---|---|---|
| Pacemaker | 5 Gs (0.5 mT) | 8.5 cm |
| Hearing aid | 10 Gs (1.0 mT) | 7.0 cm |
| Mechanical watch | 20 Gs (2.0 mT) | 5.5 cm |
| Mobile device | 40 Gs (4.0 mT) | 4.0 cm |
| Car key | 50 Gs (5.0 mT) | 4.0 cm |
| Payment card | 400 Gs (40.0 mT) | 1.5 cm |
| HDD hard drive | 600 Gs (60.0 mT) | 1.5 cm |
Table 8: Dynamics (kinetic energy) - warning
MW 15x10 / N38
| Start from (mm) | Speed (km/h) | Energy (J) | Predicted outcome |
|---|---|---|---|
| 10 mm |
24.75 km/h
(6.88 m/s)
|
0.31 J | |
| 30 mm |
42.12 km/h
(11.70 m/s)
|
0.91 J | |
| 50 mm |
54.36 km/h
(15.10 m/s)
|
1.51 J | |
| 100 mm |
76.88 km/h
(21.36 m/s)
|
3.02 J |
Table 9: Surface protection spec
MW 15x10 / 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 (Flux)
MW 15x10 / N38
| Parameter | Value | SI Unit / Description |
|---|---|---|
| Magnetic Flux | 8 827 Mx | 88.3 µWb |
| Pc Coefficient | 0.71 | High (Stable) |
Table 11: Hydrostatics and buoyancy
MW 15x10 / N38
| Environment | Effective steel pull | Effect |
|---|---|---|
| Air (land) | 7.70 kg | Standard |
| Water (riverbed) |
8.82 kg
(+1.12 kg buoyancy gain)
|
+14.5% |
1. Vertical hold
*Note: On a vertical surface, the magnet holds only a fraction of its perpendicular strength.
2. Steel saturation
*Thin steel (e.g. 0.5mm PC case) significantly limits the holding force.
3. Power loss vs temp
*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) = 0.71
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 |
Other products
Advantages and disadvantages of Nd2Fe14B magnets.
Advantages
- They retain attractive force for almost 10 years – the drop is just ~1% (based on simulations),
- Neodymium magnets are distinguished by exceptionally resistant to demagnetization caused by external interference,
- The use of an aesthetic coating of noble metals (nickel, gold, silver) causes the element to be more visually attractive,
- They feature high magnetic induction at the operating surface, which affects their effectiveness,
- 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 flexibility in constructing and the capacity to modify to individual projects,
- Significant place in modern industrial fields – they are commonly used in HDD drives, brushless drives, diagnostic systems, as well as complex engineering applications.
- Relatively small size with high pulling force – neodymium magnets offer high power in small dimensions, which makes them useful in compact constructions
Weaknesses
- They are prone to damage upon too strong impacts. To avoid cracks, it is worth securing magnets in a protective case. Such protection not only shields the magnet but also improves its resistance to damage
- We warn that neodymium magnets can lose their power at high temperatures. To prevent this, we recommend our specialized [AH] magnets, which work effectively even at 230°C.
- They oxidize in a humid environment - during use outdoors we advise using waterproof magnets e.g. in rubber, plastic
- We recommend a housing - magnetic mount, due to difficulties in creating nuts inside the magnet and complicated shapes.
- Health risk resulting from small fragments of magnets pose a threat, if swallowed, which is particularly important in the context of child health protection. It is also worth noting that tiny parts of these products can be problematic in diagnostics medical after entering the body.
- Due to neodymium price, their price exceeds standard values,
Pull force analysis
Breakaway strength of the magnet in ideal conditions – what affects it?
- with the use of a yoke made of special test steel, ensuring maximum field concentration
- whose transverse dimension reaches at least 10 mm
- characterized by smoothness
- under conditions of no distance (surface-to-surface)
- under axial force vector (90-degree angle)
- at temperature room level
Lifting capacity in real conditions – factors
- Gap between magnet and steel – every millimeter of separation (caused e.g. by veneer or dirt) drastically reduces the pulling force, often by half at just 0.5 mm.
- Load vector – highest force is obtained only during pulling at a 90° angle. The force required to slide of the magnet along the plate is usually several times lower (approx. 1/5 of the lifting capacity).
- Metal thickness – thin material does not allow full use of the magnet. Magnetic flux passes through the material instead of generating force.
- Material composition – different alloys reacts the same. High carbon content weaken the attraction effect.
- Surface quality – the more even the plate, the larger the contact zone and stronger the hold. Unevenness creates an air distance.
- Thermal environment – temperature increase causes a temporary drop of force. Check the maximum operating temperature for a given model.
Holding force was tested on a smooth steel plate of 20 mm thickness, when a perpendicular force was applied, however under attempts to slide the magnet the lifting capacity is smaller. In addition, even a slight gap between the magnet and the plate reduces the lifting capacity.
Safety rules for work with neodymium magnets
Bodily injuries
Danger of trauma: The pulling power is so immense that it can cause hematomas, pinching, and even bone fractures. Protective gloves are recommended.
Impact on smartphones
GPS units and mobile phones are extremely sensitive to magnetism. Direct contact with a strong magnet can decalibrate the sensors in your phone.
Swallowing risk
Strictly keep magnets out of reach of children. Choking hazard is high, and the effects of magnets clamping inside the body are life-threatening.
Nickel allergy
A percentage of the population suffer from a sensitization to Ni, which is the typical protective layer for neodymium magnets. Frequent touching can result in a rash. We recommend use protective gloves.
Respect the power
Before use, read the rules. Sudden snapping can destroy the magnet or injure your hand. Be predictive.
Health Danger
Health Alert: Strong magnets can deactivate heart devices and defibrillators. Stay away if you have electronic implants.
Thermal limits
Standard neodymium magnets (N-type) lose magnetization when the temperature goes above 80°C. This process is irreversible.
Electronic hazard
Data protection: Strong magnets can ruin data carriers and sensitive devices (pacemakers, medical aids, mechanical watches).
Flammability
Combustion risk: Rare earth powder is highly flammable. Do not process magnets without safety gear as this may cause fire.
Shattering risk
Neodymium magnets are sintered ceramics, meaning they are very brittle. Impact of two magnets will cause them cracking into shards.
