MW 14x2 / N38 - cylindrical magnet
cylindrical magnet
Catalog no 010024
GTIN/EAN: 5906301810230
Diameter Ø
14 mm [±0,1 mm]
Height
2 mm [±0,1 mm]
Weight
2.31 g
Magnetization Direction
↑ axial
Load capacity
1.48 kg / 14.51 N
Magnetic Induction
170.27 mT / 1703 Gs
Coating
[NiCuNi] Nickel
0.898 ZŁ with VAT / pcs + price for transport
0.730 ZŁ net + 23% VAT / pcs
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Technical - MW 14x2 / N38 - cylindrical magnet
Specification / characteristics - MW 14x2 / N38 - cylindrical magnet
| properties | values |
|---|---|
| Cat. no. | 010024 |
| GTIN/EAN | 5906301810230 |
| Production/Distribution | Dhit sp. z o.o. |
| Country of origin | Poland / China / Germany |
| Customs code | 85059029 |
| Diameter Ø | 14 mm [±0,1 mm] |
| Height | 2 mm [±0,1 mm] |
| Weight | 2.31 g |
| Magnetization Direction | ↑ axial |
| Load capacity ~ ? | 1.48 kg / 14.51 N |
| Magnetic Induction ~ ? | 170.27 mT / 1703 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 product - report
These information represent the outcome of a engineering analysis. Results were calculated on models for the material Nd2Fe14B. Real-world conditions may deviate from the simulation results. Use these calculations as a reference point for designers.
Table 1: Static force (pull vs distance) - power drop
MW 14x2 / N38
| Distance (mm) | Induction (Gauss) / mT | Pull Force (kg/lbs/g/N) | Risk Status |
|---|---|---|---|
| 0 mm |
1702 Gs
170.2 mT
|
1.48 kg / 3.26 pounds
1480.0 g / 14.5 N
|
weak grip |
| 1 mm |
1565 Gs
156.5 mT
|
1.25 kg / 2.76 pounds
1251.7 g / 12.3 N
|
weak grip |
| 2 mm |
1373 Gs
137.3 mT
|
0.96 kg / 2.12 pounds
962.5 g / 9.4 N
|
weak grip |
| 3 mm |
1161 Gs
116.1 mT
|
0.69 kg / 1.52 pounds
688.9 g / 6.8 N
|
weak grip |
| 5 mm |
780 Gs
78.0 mT
|
0.31 kg / 0.69 pounds
311.0 g / 3.1 N
|
weak grip |
| 10 mm |
276 Gs
27.6 mT
|
0.04 kg / 0.09 pounds
39.0 g / 0.4 N
|
weak grip |
| 15 mm |
115 Gs
11.5 mT
|
0.01 kg / 0.01 pounds
6.7 g / 0.1 N
|
weak grip |
| 20 mm |
56 Gs
5.6 mT
|
0.00 kg / 0.00 pounds
1.6 g / 0.0 N
|
weak grip |
| 30 mm |
19 Gs
1.9 mT
|
0.00 kg / 0.00 pounds
0.2 g / 0.0 N
|
weak grip |
| 50 mm |
4 Gs
0.4 mT
|
0.00 kg / 0.00 pounds
0.0 g / 0.0 N
|
weak grip |
Table 2: Slippage load (vertical surface)
MW 14x2 / N38
| Distance (mm) | Friction coefficient | Pull Force (kg/lbs/g/N) |
|---|---|---|
| 0 mm | Stal (~0.2) |
0.30 kg / 0.65 pounds
296.0 g / 2.9 N
|
| 1 mm | Stal (~0.2) |
0.25 kg / 0.55 pounds
250.0 g / 2.5 N
|
| 2 mm | Stal (~0.2) |
0.19 kg / 0.42 pounds
192.0 g / 1.9 N
|
| 3 mm | Stal (~0.2) |
0.14 kg / 0.30 pounds
138.0 g / 1.4 N
|
| 5 mm | Stal (~0.2) |
0.06 kg / 0.14 pounds
62.0 g / 0.6 N
|
| 10 mm | Stal (~0.2) |
0.01 kg / 0.02 pounds
8.0 g / 0.1 N
|
| 15 mm | Stal (~0.2) |
0.00 kg / 0.00 pounds
2.0 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 (shearing) - vertical pull
MW 14x2 / N38
| Surface type | Friction coefficient / % Mocy | Max load (kg/lbs/g/N) |
|---|---|---|
| Raw steel |
µ = 0.3
30% Nominalnej Siły
|
0.44 kg / 0.98 pounds
444.0 g / 4.4 N
|
| Painted steel (standard) |
µ = 0.2
20% Nominalnej Siły
|
0.30 kg / 0.65 pounds
296.0 g / 2.9 N
|
| Oily/slippery steel |
µ = 0.1
10% Nominalnej Siły
|
0.15 kg / 0.33 pounds
148.0 g / 1.5 N
|
| Magnet with anti-slip rubber |
µ = 0.5
50% Nominalnej Siły
|
0.74 kg / 1.63 pounds
740.0 g / 7.3 N
|
Table 4: Material efficiency (saturation) - power losses
MW 14x2 / N38
| Steel thickness (mm) | % power | Real pull force (kg/lbs/g/N) |
|---|---|---|
| 0.5 mm |
|
0.15 kg / 0.33 pounds
148.0 g / 1.5 N
|
| 1 mm |
|
0.37 kg / 0.82 pounds
370.0 g / 3.6 N
|
| 2 mm |
|
0.74 kg / 1.63 pounds
740.0 g / 7.3 N
|
| 3 mm |
|
1.11 kg / 2.45 pounds
1110.0 g / 10.9 N
|
| 5 mm |
|
1.48 kg / 3.26 pounds
1480.0 g / 14.5 N
|
| 10 mm |
|
1.48 kg / 3.26 pounds
1480.0 g / 14.5 N
|
| 11 mm |
|
1.48 kg / 3.26 pounds
1480.0 g / 14.5 N
|
| 12 mm |
|
1.48 kg / 3.26 pounds
1480.0 g / 14.5 N
|
Table 5: Thermal resistance (material behavior) - thermal limit
MW 14x2 / N38
| Ambient temp. (°C) | Power loss | Remaining pull (kg/lbs/g/N) | Status |
|---|---|---|---|
| 20 °C | 0.0% |
1.48 kg / 3.26 pounds
1480.0 g / 14.5 N
|
OK |
| 40 °C | -2.2% |
1.45 kg / 3.19 pounds
1447.4 g / 14.2 N
|
OK |
| 60 °C | -4.4% |
1.41 kg / 3.12 pounds
1414.9 g / 13.9 N
|
|
| 80 °C | -6.6% |
1.38 kg / 3.05 pounds
1382.3 g / 13.6 N
|
|
| 100 °C | -28.8% |
1.05 kg / 2.32 pounds
1053.8 g / 10.3 N
|
Table 6: Magnet-Magnet interaction (attraction) - field collision
MW 14x2 / N38
| Gap (mm) | Attraction (kg/lbs) (N-S) | Sliding Force (kg/lbs/g/N) | Repulsion (kg/lbs) (N-N) |
|---|---|---|---|
| 0 mm |
2.75 kg / 6.06 pounds
3 073 Gs
|
0.41 kg / 0.91 pounds
413 g / 4.0 N
|
N/A |
| 1 mm |
2.56 kg / 5.65 pounds
3 287 Gs
|
0.38 kg / 0.85 pounds
385 g / 3.8 N
|
2.31 kg / 5.09 pounds
~0 Gs
|
| 2 mm |
2.33 kg / 5.13 pounds
3 131 Gs
|
0.35 kg / 0.77 pounds
349 g / 3.4 N
|
2.09 kg / 4.61 pounds
~0 Gs
|
| 3 mm |
2.06 kg / 4.54 pounds
2 947 Gs
|
0.31 kg / 0.68 pounds
309 g / 3.0 N
|
1.85 kg / 4.09 pounds
~0 Gs
|
| 5 mm |
1.52 kg / 3.36 pounds
2 535 Gs
|
0.23 kg / 0.50 pounds
229 g / 2.2 N
|
1.37 kg / 3.02 pounds
~0 Gs
|
| 10 mm |
0.58 kg / 1.27 pounds
1 561 Gs
|
0.09 kg / 0.19 pounds
87 g / 0.9 N
|
0.52 kg / 1.15 pounds
~0 Gs
|
| 20 mm |
0.07 kg / 0.16 pounds
552 Gs
|
0.01 kg / 0.02 pounds
11 g / 0.1 N
|
0.07 kg / 0.14 pounds
~0 Gs
|
| 50 mm |
0.00 kg / 0.00 pounds
62 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
38 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
25 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
17 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
12 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
9 Gs
|
0.00 kg / 0.00 pounds
0 g / 0.0 N
|
0.00 kg / 0.00 pounds
~0 Gs
|
Table 7: Protective zones (implants) - warnings
MW 14x2 / N38
| Object / Device | Limit (Gauss) / mT | Safe distance |
|---|---|---|
| Pacemaker | 5 Gs (0.5 mT) | 5.0 cm |
| Hearing aid | 10 Gs (1.0 mT) | 4.0 cm |
| Mechanical watch | 20 Gs (2.0 mT) | 3.0 cm |
| Mobile device | 40 Gs (4.0 mT) | 2.5 cm |
| Remote | 50 Gs (5.0 mT) | 2.5 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) - collision effects
MW 14x2 / N38
| Start from (mm) | Speed (km/h) | Energy (J) | Predicted outcome |
|---|---|---|---|
| 10 mm |
25.94 km/h
(7.21 m/s)
|
0.06 J | |
| 30 mm |
44.22 km/h
(12.28 m/s)
|
0.17 J | |
| 50 mm |
57.08 km/h
(15.86 m/s)
|
0.29 J | |
| 100 mm |
80.72 km/h
(22.42 m/s)
|
0.58 J |
Table 9: Anti-corrosion coating durability
MW 14x2 / 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 14x2 / N38
| Parameter | Value | SI Unit / Description |
|---|---|---|
| Magnetic Flux | 3 247 Mx | 32.5 µWb |
| Pc Coefficient | 0.22 | Low (Flat) |
Table 11: Physics of underwater searching
MW 14x2 / N38
| Environment | Effective steel pull | Effect |
|---|---|---|
| Air (land) | 1.48 kg | Standard |
| Water (riverbed) |
1.69 kg
(+0.21 kg buoyancy gain)
|
+14.5% |
1. Shear force
*Caution: On a vertical surface, the magnet holds just approx. 20-30% of its max power.
2. Efficiency vs thickness
*Thin metal sheet (e.g. 0.5mm PC case) drastically weakens the holding force.
3. Thermal stability
*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) = 0.22
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% |
Sustainability
| 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 rare earth magnets.
Strengths
- Their strength is durable, and after approximately ten years it drops only by ~1% (according to research),
- Neodymium magnets are distinguished by exceptionally resistant to demagnetization caused by external magnetic fields,
- The use of an elegant coating of noble metals (nickel, gold, silver) causes the element to look better,
- Magnetic induction on the top side of the magnet is strong,
- Neodymium magnets are characterized by very high magnetic induction on the magnet surface and can work (depending on the shape) even at a temperature of 230°C or more...
- Thanks to modularity in designing and the ability to adapt to specific needs,
- Huge importance in innovative solutions – they find application in data components, electric motors, precision medical tools, and other advanced devices.
- Thanks to efficiency per cm³, small magnets offer high operating force, occupying minimum space,
Weaknesses
- Susceptibility to cracking is one of their disadvantages. Upon intense impact they can break. We recommend keeping them in a special holder, which not only secures them against impacts but also raises their durability
- When exposed to high temperature, neodymium magnets suffer a drop in power. Often, when the temperature exceeds 80°C, their power 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 oxidize in a humid environment. For use outdoors we recommend using waterproof magnets e.g. in rubber, plastic
- Limited ability of making threads in the magnet and complex shapes - preferred is cover - magnet mounting.
- Potential hazard resulting from small fragments of magnets can be dangerous, if swallowed, which becomes key in the context of child health protection. Furthermore, tiny parts of these magnets can be problematic in diagnostics medical after entering the body.
- Higher cost of purchase is one of the disadvantages compared to ceramic magnets, especially in budget applications
Lifting parameters
Maximum lifting force for a neodymium magnet – what contributes to it?
- on a base made of structural steel, optimally conducting the magnetic field
- whose transverse dimension equals approx. 10 mm
- with a surface free of scratches
- under conditions of ideal adhesion (metal-to-metal)
- under perpendicular force vector (90-degree angle)
- in stable room temperature
Lifting capacity in practice – influencing factors
- Clearance – the presence of any layer (paint, dirt, air) interrupts the magnetic circuit, which lowers power rapidly (even by 50% at 0.5 mm).
- Pull-off angle – remember that the magnet holds strongest perpendicularly. Under shear forces, the holding force drops drastically, often to levels of 20-30% of the nominal value.
- Plate thickness – insufficiently thick steel does not accept the full field, causing part of the power to be escaped into the air.
- Chemical composition of the base – low-carbon steel gives the best results. Higher carbon content decrease magnetic permeability and lifting capacity.
- Smoothness – ideal contact is possible only on smooth steel. Any scratches and bumps create air cushions, reducing force.
- Thermal factor – hot environment weakens pulling force. Exceeding the limit temperature can permanently demagnetize the magnet.
Holding force was measured on a smooth steel plate of 20 mm thickness, when a perpendicular force was applied, in contrast under parallel forces the lifting capacity is smaller. Additionally, even a minimal clearance between the magnet’s surface and the plate reduces the holding force.
Safe handling of neodymium magnets
Crushing risk
Large magnets can break fingers instantly. Never put your hand between two attracting surfaces.
Threat to navigation
Remember: rare earth magnets generate a field that confuses sensitive sensors. Maintain a separation from your mobile, tablet, and navigation systems.
Safe operation
Exercise caution. Rare earth magnets attract from a distance and snap with massive power, often quicker than you can react.
Flammability
Powder produced during machining of magnets is flammable. Avoid drilling into magnets unless you are an expert.
Nickel allergy
Warning for allergy sufferers: The Ni-Cu-Ni coating consists of nickel. If skin irritation appears, cease working with magnets and wear gloves.
Demagnetization risk
Avoid heat. NdFeB magnets are sensitive to temperature. If you require resistance above 80°C, inquire about HT versions (H, SH, UH).
Magnet fragility
Watch out for shards. Magnets can fracture upon uncontrolled impact, ejecting shards into the air. Wear goggles.
Warning for heart patients
Warning for patients: Powerful magnets affect medical devices. Keep at least 30 cm distance or ask another person to handle the magnets.
Cards and drives
Equipment safety: Neodymium magnets can ruin payment cards and sensitive devices (pacemakers, hearing aids, timepieces).
Product not for children
These products are not suitable for play. Swallowing a few magnets can lead to them pinching intestinal walls, which constitutes a critical condition and requires immediate surgery.
