MW 14x10 / N38 - cylindrical magnet
cylindrical magnet
Catalog no 010391
GTIN/EAN: 5906301811084
Diameter Ø
14 mm [±0,1 mm]
Height
10 mm [±0,1 mm]
Weight
11.55 g
Magnetization Direction
↑ axial
Load capacity
6.71 kg / 65.83 N
Magnetic Induction
507.48 mT / 5075 Gs
Coating
[NiCuNi] Nickel
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Technical parameters - MW 14x10 / N38 - cylindrical magnet
Specification / characteristics - MW 14x10 / N38 - cylindrical magnet
| properties | values |
|---|---|
| Cat. no. | 010391 |
| GTIN/EAN | 5906301811084 |
| Production/Distribution | Dhit sp. z o.o. |
| Country of origin | Poland / China / Germany |
| Customs code | 85059029 |
| Diameter Ø | 14 mm [±0,1 mm] |
| Height | 10 mm [±0,1 mm] |
| Weight | 11.55 g |
| Magnetization Direction | ↑ axial |
| Load capacity ~ ? | 6.71 kg / 65.83 N |
| Magnetic Induction ~ ? | 507.48 mT / 5075 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 magnet - technical parameters
These values are the result of a mathematical simulation. Values were calculated on models for the class Nd2Fe14B. Real-world performance may differ. Use these data as a supplementary guide when designing systems.
Table 1: Static pull force (force vs distance) - interaction chart
MW 14x10 / N38
| Distance (mm) | Induction (Gauss) / mT | Pull Force (kg/lbs/g/N) | Risk Status |
|---|---|---|---|
| 0 mm |
5072 Gs
507.2 mT
|
6.71 kg / 14.79 LBS
6710.0 g / 65.8 N
|
strong |
| 1 mm |
4354 Gs
435.4 mT
|
4.94 kg / 10.90 LBS
4944.4 g / 48.5 N
|
strong |
| 2 mm |
3652 Gs
365.2 mT
|
3.48 kg / 7.67 LBS
3479.0 g / 34.1 N
|
strong |
| 3 mm |
3017 Gs
301.7 mT
|
2.37 kg / 5.23 LBS
2373.5 g / 23.3 N
|
strong |
| 5 mm |
2015 Gs
201.5 mT
|
1.06 kg / 2.33 LBS
1058.7 g / 10.4 N
|
low risk |
| 10 mm |
773 Gs
77.3 mT
|
0.16 kg / 0.34 LBS
155.7 g / 1.5 N
|
low risk |
| 15 mm |
352 Gs
35.2 mT
|
0.03 kg / 0.07 LBS
32.3 g / 0.3 N
|
low risk |
| 20 mm |
186 Gs
18.6 mT
|
0.01 kg / 0.02 LBS
9.0 g / 0.1 N
|
low risk |
| 30 mm |
69 Gs
6.9 mT
|
0.00 kg / 0.00 LBS
1.3 g / 0.0 N
|
low risk |
| 50 mm |
18 Gs
1.8 mT
|
0.00 kg / 0.00 LBS
0.1 g / 0.0 N
|
low risk |
Table 2: Vertical force (vertical surface)
MW 14x10 / N38
| Distance (mm) | Friction coefficient | Pull Force (kg/lbs/g/N) |
|---|---|---|
| 0 mm | Stal (~0.2) |
1.34 kg / 2.96 LBS
1342.0 g / 13.2 N
|
| 1 mm | Stal (~0.2) |
0.99 kg / 2.18 LBS
988.0 g / 9.7 N
|
| 2 mm | Stal (~0.2) |
0.70 kg / 1.53 LBS
696.0 g / 6.8 N
|
| 3 mm | Stal (~0.2) |
0.47 kg / 1.04 LBS
474.0 g / 4.6 N
|
| 5 mm | Stal (~0.2) |
0.21 kg / 0.47 LBS
212.0 g / 2.1 N
|
| 10 mm | Stal (~0.2) |
0.03 kg / 0.07 LBS
32.0 g / 0.3 N
|
| 15 mm | Stal (~0.2) |
0.01 kg / 0.01 LBS
6.0 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 (shearing) - vertical pull
MW 14x10 / N38
| Surface type | Friction coefficient / % Mocy | Max load (kg/lbs/g/N) |
|---|---|---|
| Raw steel |
µ = 0.3
30% Nominalnej Siły
|
2.01 kg / 4.44 LBS
2013.0 g / 19.7 N
|
| Painted steel (standard) |
µ = 0.2
20% Nominalnej Siły
|
1.34 kg / 2.96 LBS
1342.0 g / 13.2 N
|
| Oily/slippery steel |
µ = 0.1
10% Nominalnej Siły
|
0.67 kg / 1.48 LBS
671.0 g / 6.6 N
|
| Magnet with anti-slip rubber |
µ = 0.5
50% Nominalnej Siły
|
3.36 kg / 7.40 LBS
3355.0 g / 32.9 N
|
Table 4: Material efficiency (substrate influence) - sheet metal selection
MW 14x10 / N38
| Steel thickness (mm) | % power | Real pull force (kg/lbs/g/N) |
|---|---|---|
| 0.5 mm |
|
0.67 kg / 1.48 LBS
671.0 g / 6.6 N
|
| 1 mm |
|
1.68 kg / 3.70 LBS
1677.5 g / 16.5 N
|
| 2 mm |
|
3.36 kg / 7.40 LBS
3355.0 g / 32.9 N
|
| 3 mm |
|
5.03 kg / 11.09 LBS
5032.5 g / 49.4 N
|
| 5 mm |
|
6.71 kg / 14.79 LBS
6710.0 g / 65.8 N
|
| 10 mm |
|
6.71 kg / 14.79 LBS
6710.0 g / 65.8 N
|
| 11 mm |
|
6.71 kg / 14.79 LBS
6710.0 g / 65.8 N
|
| 12 mm |
|
6.71 kg / 14.79 LBS
6710.0 g / 65.8 N
|
Table 5: Thermal resistance (stability) - resistance threshold
MW 14x10 / N38
| Ambient temp. (°C) | Power loss | Remaining pull (kg/lbs/g/N) | Status |
|---|---|---|---|
| 20 °C | 0.0% |
6.71 kg / 14.79 LBS
6710.0 g / 65.8 N
|
OK |
| 40 °C | -2.2% |
6.56 kg / 14.47 LBS
6562.4 g / 64.4 N
|
OK |
| 60 °C | -4.4% |
6.41 kg / 14.14 LBS
6414.8 g / 62.9 N
|
OK |
| 80 °C | -6.6% |
6.27 kg / 13.82 LBS
6267.1 g / 61.5 N
|
|
| 100 °C | -28.8% |
4.78 kg / 10.53 LBS
4777.5 g / 46.9 N
|
Table 6: Magnet-Magnet interaction (repulsion) - forces in the system
MW 14x10 / N38
| Gap (mm) | Attraction (kg/lbs) (N-S) | Lateral Force (kg/lbs/g/N) | Repulsion (kg/lbs) (N-N) |
|---|---|---|---|
| 0 mm |
24.41 kg / 53.82 LBS
5 843 Gs
|
3.66 kg / 8.07 LBS
3662 g / 35.9 N
|
N/A |
| 1 mm |
21.12 kg / 46.55 LBS
9 434 Gs
|
3.17 kg / 6.98 LBS
3167 g / 31.1 N
|
19.00 kg / 41.90 LBS
~0 Gs
|
| 2 mm |
17.99 kg / 39.66 LBS
8 708 Gs
|
2.70 kg / 5.95 LBS
2699 g / 26.5 N
|
16.19 kg / 35.70 LBS
~0 Gs
|
| 3 mm |
15.16 kg / 33.43 LBS
7 994 Gs
|
2.27 kg / 5.01 LBS
2274 g / 22.3 N
|
13.65 kg / 30.08 LBS
~0 Gs
|
| 5 mm |
10.49 kg / 23.12 LBS
6 649 Gs
|
1.57 kg / 3.47 LBS
1573 g / 15.4 N
|
9.44 kg / 20.81 LBS
~0 Gs
|
| 10 mm |
3.85 kg / 8.49 LBS
4 029 Gs
|
0.58 kg / 1.27 LBS
578 g / 5.7 N
|
3.47 kg / 7.64 LBS
~0 Gs
|
| 20 mm |
0.57 kg / 1.25 LBS
1 545 Gs
|
0.08 kg / 0.19 LBS
85 g / 0.8 N
|
0.51 kg / 1.12 LBS
~0 Gs
|
| 50 mm |
0.01 kg / 0.02 LBS
218 Gs
|
0.00 kg / 0.00 LBS
2 g / 0.0 N
|
0.01 kg / 0.02 LBS
~0 Gs
|
| 60 mm |
0.00 kg / 0.01 LBS
139 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 / 0.00 LBS
93 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
66 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
48 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
36 Gs
|
0.00 kg / 0.00 LBS
0 g / 0.0 N
|
0.00 kg / 0.00 LBS
~0 Gs
|
Table 7: Protective zones (electronics) - precautionary measures
MW 14x10 / N38
| Object / Device | Limit (Gauss) / mT | Safe distance |
|---|---|---|
| Pacemaker | 5 Gs (0.5 mT) | 8.0 cm |
| Hearing aid | 10 Gs (1.0 mT) | 6.5 cm |
| Timepiece | 20 Gs (2.0 mT) | 5.0 cm |
| Mobile device | 40 Gs (4.0 mT) | 4.0 cm |
| Car key | 50 Gs (5.0 mT) | 3.5 cm |
| Payment card | 400 Gs (40.0 mT) | 1.5 cm |
| HDD hard drive | 600 Gs (60.0 mT) | 1.5 cm |
Table 8: Collisions (cracking risk) - warning
MW 14x10 / N38
| Start from (mm) | Speed (km/h) | Energy (J) | Predicted outcome |
|---|---|---|---|
| 10 mm |
24.66 km/h
(6.85 m/s)
|
0.27 J | |
| 30 mm |
42.11 km/h
(11.70 m/s)
|
0.79 J | |
| 50 mm |
54.36 km/h
(15.10 m/s)
|
1.32 J | |
| 100 mm |
76.87 km/h
(21.35 m/s)
|
2.63 J |
Table 9: Anti-corrosion coating durability
MW 14x10 / 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 14x10 / N38
| Parameter | Value | SI Unit / Description |
|---|---|---|
| Magnetic Flux | 7 886 Mx | 78.9 µWb |
| Pc Coefficient | 0.74 | High (Stable) |
Table 11: Physics of underwater searching
MW 14x10 / N38
| Environment | Effective steel pull | Effect |
|---|---|---|
| Air (land) | 6.71 kg | Standard |
| Water (riverbed) |
7.68 kg
(+0.97 kg buoyancy gain)
|
+14.5% |
1. Vertical hold
*Note: On a vertical wall, the magnet retains only approx. 20-30% of its perpendicular strength.
2. Steel saturation
*Thin steel (e.g. 0.5mm PC case) severely weakens 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) = 0.74
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.
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% |
Sustainability
| recyclability (EoL) | 100% |
| recycled raw materials | ~10% (pre-cons) |
| carbon footprint | low / zredukowany |
| waste code (EWC) | 16 02 16 |
Other proposals
Strengths as well as weaknesses of rare earth magnets.
Strengths
- Their strength remains stable, and after approximately 10 years it decreases only by ~1% (theoretically),
- They possess excellent resistance to weakening of magnetic properties due to external magnetic sources,
- A magnet with a metallic nickel surface looks better,
- Neodymium magnets create maximum magnetic induction on a small area, which allows for strong attraction,
- Through (adequate) combination of ingredients, they can achieve high thermal resistance, enabling action at temperatures approaching 230°C and above...
- Thanks to flexibility in forming and the capacity to customize to unusual requirements,
- Universal use in modern technologies – they are used in mass storage devices, brushless drives, medical equipment, also industrial machines.
- Thanks to efficiency per cm³, small magnets offer high operating force, occupying minimum space,
Disadvantages
- At very strong impacts they can crack, therefore we advise placing them in strong housings. A metal housing provides additional protection against damage, as well as increases the magnet's durability.
- Neodymium magnets decrease their strength under the influence of heating. As soon as 80°C is exceeded, many of them start losing their force. Therefore, we recommend our special magnets marked [AH], which maintain durability even at temperatures up to 230°C
- Magnets exposed to a humid environment can rust. Therefore while using outdoors, we suggest using water-impermeable magnets made of rubber, plastic or other material protecting against moisture
- We suggest cover - magnetic mount, due to difficulties in creating threads inside the magnet and complex forms.
- Potential hazard related to microscopic parts of magnets are risky, when accidentally swallowed, which gains importance in the context of child health protection. Furthermore, tiny parts of these devices are able to disrupt the diagnostic process medical after entering the body.
- Higher cost of purchase is one of the disadvantages compared to ceramic magnets, especially in budget applications
Pull force analysis
Optimal lifting capacity of a neodymium magnet – what contributes to it?
- using a sheet made of low-carbon steel, acting as a circuit closing element
- whose thickness equals approx. 10 mm
- with an polished touching surface
- under conditions of gap-free contact (metal-to-metal)
- for force acting at a right angle (pull-off, not shear)
- at standard ambient temperature
What influences lifting capacity in practice
- Clearance – existence of any layer (rust, dirt, gap) acts as an insulator, which lowers power rapidly (even by 50% at 0.5 mm).
- Angle of force application – maximum parameter is reached only during pulling at a 90° angle. The resistance to sliding of the magnet along the plate is typically several times smaller (approx. 1/5 of the lifting capacity).
- Wall thickness – thin material does not allow full use of the magnet. Magnetic flux passes through the material instead of converting into lifting capacity.
- Material type – the best choice is high-permeability steel. Cast iron may attract less.
- Surface condition – smooth surfaces guarantee perfect abutment, which improves force. Uneven metal weaken the grip.
- Temperature – temperature increase results in weakening of force. It is worth remembering the maximum operating temperature for a given model.
Lifting capacity testing was conducted on a smooth plate of optimal thickness, under perpendicular forces, in contrast under parallel forces the load capacity is reduced by as much as 75%. Moreover, even a minimal clearance between the magnet’s surface and the plate lowers the holding force.
Warnings
Skin irritation risks
It is widely known that the nickel plating (the usual finish) is a common allergen. If you have an allergy, prevent touching magnets with bare hands and opt for encased magnets.
Fire warning
Powder produced during cutting of magnets is combustible. Do not drill into magnets unless you are an expert.
Safe operation
Exercise caution. Rare earth magnets act from a distance and connect with massive power, often quicker than you can move away.
Heat warning
Keep cool. Neodymium magnets are sensitive to temperature. If you need operation above 80°C, look for special high-temperature series (H, SH, UH).
GPS Danger
An intense magnetic field disrupts the functioning of magnetometers in smartphones and GPS navigation. Do not bring magnets close to a device to avoid breaking the sensors.
Bodily injuries
Big blocks can smash fingers in a fraction of a second. Never place your hand betwixt two attracting surfaces.
Shattering risk
Despite metallic appearance, neodymium is brittle and cannot withstand shocks. Avoid impacts, as the magnet may crumble into sharp, dangerous pieces.
Protect data
Avoid bringing magnets close to a purse, computer, or TV. The magnetism can destroy these devices and erase data from cards.
Implant safety
Warning for patients: Powerful magnets disrupt electronics. Maintain minimum 30 cm distance or request help to work with the magnets.
Choking Hazard
Product intended for adults. Tiny parts pose a choking risk, leading to serious injuries. Store away from children and animals.
