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
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Technical details - 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 magnet - report
Presented values represent the outcome of a physical analysis. Values rely on algorithms for the class Nd2Fe14B. Actual parameters might slightly deviate from the simulation results. Use these data as a reference point when designing systems.
Table 1: Static pull force (force vs distance) - characteristics
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 LBS
1480.0 g / 14.5 N
|
weak grip |
| 1 mm |
1565 Gs
156.5 mT
|
1.25 kg / 2.76 LBS
1251.7 g / 12.3 N
|
weak grip |
| 2 mm |
1373 Gs
137.3 mT
|
0.96 kg / 2.12 LBS
962.5 g / 9.4 N
|
weak grip |
| 3 mm |
1161 Gs
116.1 mT
|
0.69 kg / 1.52 LBS
688.9 g / 6.8 N
|
weak grip |
| 5 mm |
780 Gs
78.0 mT
|
0.31 kg / 0.69 LBS
311.0 g / 3.1 N
|
weak grip |
| 10 mm |
276 Gs
27.6 mT
|
0.04 kg / 0.09 LBS
39.0 g / 0.4 N
|
weak grip |
| 15 mm |
115 Gs
11.5 mT
|
0.01 kg / 0.01 LBS
6.7 g / 0.1 N
|
weak grip |
| 20 mm |
56 Gs
5.6 mT
|
0.00 kg / 0.00 LBS
1.6 g / 0.0 N
|
weak grip |
| 30 mm |
19 Gs
1.9 mT
|
0.00 kg / 0.00 LBS
0.2 g / 0.0 N
|
weak grip |
| 50 mm |
4 Gs
0.4 mT
|
0.00 kg / 0.00 LBS
0.0 g / 0.0 N
|
weak grip |
Table 2: Sliding capacity (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 LBS
296.0 g / 2.9 N
|
| 1 mm | Stal (~0.2) |
0.25 kg / 0.55 LBS
250.0 g / 2.5 N
|
| 2 mm | Stal (~0.2) |
0.19 kg / 0.42 LBS
192.0 g / 1.9 N
|
| 3 mm | Stal (~0.2) |
0.14 kg / 0.30 LBS
138.0 g / 1.4 N
|
| 5 mm | Stal (~0.2) |
0.06 kg / 0.14 LBS
62.0 g / 0.6 N
|
| 10 mm | Stal (~0.2) |
0.01 kg / 0.02 LBS
8.0 g / 0.1 N
|
| 15 mm | Stal (~0.2) |
0.00 kg / 0.00 LBS
2.0 g / 0.0 N
|
| 20 mm | Stal (~0.2) |
0.00 kg / 0.00 LBS
0.0 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: Vertical assembly (sliding) - behavior on slippery surfaces
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 LBS
444.0 g / 4.4 N
|
| Painted steel (standard) |
µ = 0.2
20% Nominalnej Siły
|
0.30 kg / 0.65 LBS
296.0 g / 2.9 N
|
| Oily/slippery steel |
µ = 0.1
10% Nominalnej Siły
|
0.15 kg / 0.33 LBS
148.0 g / 1.5 N
|
| Magnet with anti-slip rubber |
µ = 0.5
50% Nominalnej Siły
|
0.74 kg / 1.63 LBS
740.0 g / 7.3 N
|
Table 4: Material efficiency (substrate influence) - sheet metal selection
MW 14x2 / N38
| Steel thickness (mm) | % power | Real pull force (kg/lbs/g/N) |
|---|---|---|
| 0.5 mm |
|
0.15 kg / 0.33 LBS
148.0 g / 1.5 N
|
| 1 mm |
|
0.37 kg / 0.82 LBS
370.0 g / 3.6 N
|
| 2 mm |
|
0.74 kg / 1.63 LBS
740.0 g / 7.3 N
|
| 3 mm |
|
1.11 kg / 2.45 LBS
1110.0 g / 10.9 N
|
| 5 mm |
|
1.48 kg / 3.26 LBS
1480.0 g / 14.5 N
|
| 10 mm |
|
1.48 kg / 3.26 LBS
1480.0 g / 14.5 N
|
| 11 mm |
|
1.48 kg / 3.26 LBS
1480.0 g / 14.5 N
|
| 12 mm |
|
1.48 kg / 3.26 LBS
1480.0 g / 14.5 N
|
Table 5: Thermal stability (stability) - power drop
MW 14x2 / N38
| Ambient temp. (°C) | Power loss | Remaining pull (kg/lbs/g/N) | Status |
|---|---|---|---|
| 20 °C | 0.0% |
1.48 kg / 3.26 LBS
1480.0 g / 14.5 N
|
OK |
| 40 °C | -2.2% |
1.45 kg / 3.19 LBS
1447.4 g / 14.2 N
|
OK |
| 60 °C | -4.4% |
1.41 kg / 3.12 LBS
1414.9 g / 13.9 N
|
|
| 80 °C | -6.6% |
1.38 kg / 3.05 LBS
1382.3 g / 13.6 N
|
|
| 100 °C | -28.8% |
1.05 kg / 2.32 LBS
1053.8 g / 10.3 N
|
Table 6: Magnet-Magnet interaction (attraction) - field collision
MW 14x2 / N38
| Gap (mm) | Attraction (kg/lbs) (N-S) | Lateral Force (kg/lbs/g/N) | Repulsion (kg/lbs) (N-N) |
|---|---|---|---|
| 0 mm |
2.75 kg / 6.06 LBS
3 073 Gs
|
0.41 kg / 0.91 LBS
413 g / 4.0 N
|
N/A |
| 1 mm |
2.56 kg / 5.65 LBS
3 287 Gs
|
0.38 kg / 0.85 LBS
385 g / 3.8 N
|
2.31 kg / 5.09 LBS
~0 Gs
|
| 2 mm |
2.33 kg / 5.13 LBS
3 131 Gs
|
0.35 kg / 0.77 LBS
349 g / 3.4 N
|
2.09 kg / 4.61 LBS
~0 Gs
|
| 3 mm |
2.06 kg / 4.54 LBS
2 947 Gs
|
0.31 kg / 0.68 LBS
309 g / 3.0 N
|
1.85 kg / 4.09 LBS
~0 Gs
|
| 5 mm |
1.52 kg / 3.36 LBS
2 535 Gs
|
0.23 kg / 0.50 LBS
229 g / 2.2 N
|
1.37 kg / 3.02 LBS
~0 Gs
|
| 10 mm |
0.58 kg / 1.27 LBS
1 561 Gs
|
0.09 kg / 0.19 LBS
87 g / 0.9 N
|
0.52 kg / 1.15 LBS
~0 Gs
|
| 20 mm |
0.07 kg / 0.16 LBS
552 Gs
|
0.01 kg / 0.02 LBS
11 g / 0.1 N
|
0.07 kg / 0.14 LBS
~0 Gs
|
| 50 mm |
0.00 kg / 0.00 LBS
62 Gs
|
0.00 kg / 0.00 LBS
0 g / 0.0 N
|
0.00 kg / 0.00 LBS
~0 Gs
|
| 60 mm |
0.00 kg / 0.00 LBS
38 Gs
|
0.00 kg / 0.00 LBS
0 g / 0.0 N
|
0.00 kg / 0.00 LBS
~0 Gs
|
| 70 mm |
0.00 kg / 0.00 LBS
25 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
17 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
12 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
9 Gs
|
0.00 kg / 0.00 LBS
0 g / 0.0 N
|
0.00 kg / 0.00 LBS
~0 Gs
|
Table 7: Hazards (electronics) - precautionary measures
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 |
| Phone / Smartphone | 40 Gs (4.0 mT) | 2.5 cm |
| Car key | 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: Collisions (kinetic energy) - warning
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: Electrical data (Flux)
MW 14x2 / N38
| Parameter | Value | SI Unit / Description |
|---|---|---|
| Magnetic Flux | 3 247 Mx | 32.5 µWb |
| Pc Coefficient | 0.22 | Low (Flat) |
Table 11: Underwater work (magnet fishing)
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. Vertical hold
*Warning: On a vertical surface, the magnet holds only ~20% of its max power.
2. Steel thickness impact
*Thin metal sheet (e.g. computer case) severely reduces the holding force.
3. Temperature resistance
*For N38 grade, the safety limit 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% |
Ecology and recycling (GPSR)
| recyclability (EoL) | 100% |
| recycled raw materials | ~10% (pre-cons) |
| carbon footprint | low / zredukowany |
| waste code (EWC) | 16 02 16 |
View also proposals
Pros and cons of Nd2Fe14B magnets.
Strengths
- They do not lose power, even over around ten years – the decrease in lifting capacity is only ~1% (based on measurements),
- Neodymium magnets prove to be exceptionally resistant to magnetic field loss caused by external interference,
- In other words, due to the shiny surface of nickel, the element becomes visually attractive,
- They are known for high magnetic induction at the operating surface, making them more effective,
- Thanks to resistance to high temperature, they can operate (depending on the form) even at temperatures up to 230°C and higher...
- Thanks to flexibility in designing and the capacity to customize to individual projects,
- Versatile presence in high-tech industry – they are utilized in hard drives, brushless drives, medical equipment, also other advanced devices.
- Relatively small size with high pulling force – neodymium magnets offer strong magnetic field in small dimensions, which makes them useful in miniature devices
Limitations
- Susceptibility to cracking is one of their disadvantages. Upon strong impact they can fracture. We recommend 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 suffer a drop in strength. 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
- Due to the susceptibility of magnets to corrosion in a humid environment, we suggest using waterproof magnets made of rubber, plastic or other material resistant to moisture, when using outdoors
- Limited ability of making threads in the magnet and complicated shapes - preferred is a housing - mounting mechanism.
- Possible danger resulting from small fragments of magnets can be dangerous, when accidentally swallowed, which is particularly important in the context of child safety. It is also worth noting that small components of these magnets can complicate diagnosis medical in case of swallowing.
- Higher cost of purchase is a significant factor to consider compared to ceramic magnets, especially in budget applications
Pull force analysis
Maximum lifting capacity of the magnet – what affects it?
- on a base made of structural steel, optimally conducting the magnetic flux
- whose transverse dimension equals approx. 10 mm
- with an ground contact surface
- under conditions of ideal adhesion (metal-to-metal)
- during detachment in a direction vertical to the mounting surface
- at conditions approx. 20°C
Practical aspects of lifting capacity – factors
- Space between surfaces – even a fraction of a millimeter of distance (caused e.g. by varnish or dirt) significantly weakens the magnet efficiency, often by half at just 0.5 mm.
- Loading method – declared lifting capacity refers to pulling vertically. When applying parallel force, the magnet exhibits significantly lower power (often approx. 20-30% of nominal force).
- Substrate thickness – to utilize 100% power, the steel must be adequately massive. Paper-thin metal limits the lifting capacity (the magnet "punches through" it).
- Metal type – different alloys attracts identically. Alloy additives weaken the attraction effect.
- Smoothness – ideal contact is obtained only on polished steel. Rough texture create air cushions, reducing force.
- Temperature – temperature increase causes a temporary drop of induction. It is worth remembering the maximum operating temperature for a given model.
Holding force was tested on the plate surface of 20 mm thickness, when the force acted perpendicularly, in contrast under shearing force the holding force is lower. Additionally, even a small distance between the magnet and the plate decreases the lifting capacity.
Precautions when working with NdFeB magnets
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.
Electronic devices
Equipment safety: Neodymium magnets can damage data carriers and sensitive devices (heart implants, hearing aids, timepieces).
Phone sensors
An intense magnetic field interferes with the operation of compasses in phones and GPS navigation. Do not bring magnets near a device to prevent damaging the sensors.
Danger to the youngest
Product intended for adults. Tiny parts can be swallowed, causing severe trauma. Store away from children and animals.
Shattering risk
Neodymium magnets are sintered ceramics, which means they are fragile like glass. Collision of two magnets leads to them breaking into small pieces.
Bodily injuries
Mind your fingers. Two powerful magnets will join immediately with a force of massive weight, destroying everything in their path. Exercise extreme caution!
Operating temperature
Regular neodymium magnets (N-type) lose magnetization when the temperature goes above 80°C. Damage is permanent.
Medical interference
Patients with a pacemaker have to maintain an absolute distance from magnets. The magnetic field can disrupt the operation of the life-saving device.
Do not drill into magnets
Combustion risk: Neodymium dust is explosive. Avoid machining magnets without safety gear as this may cause fire.
Powerful field
Exercise caution. Rare earth magnets act from a long distance and connect with huge force, often faster than you can react.
