MW 5x1 / N38 - cylindrical magnet
cylindrical magnet
Catalog no 010082
GTIN/EAN: 5906301810810
Diameter Ø
5 mm [±0,1 mm]
Height
1 mm [±0,1 mm]
Weight
0.15 g
Magnetization Direction
↑ axial
Load capacity
0.32 kg / 3.12 N
Magnetic Induction
229.95 mT / 2300 Gs
Coating
[NiCuNi] Nickel
0.1845 ZŁ with VAT / pcs + price for transport
0.1500 ZŁ net + 23% VAT / pcs
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Technical - MW 5x1 / N38 - cylindrical magnet
Specification / characteristics - MW 5x1 / N38 - cylindrical magnet
| properties | values |
|---|---|
| Cat. no. | 010082 |
| GTIN/EAN | 5906301810810 |
| Production/Distribution | Dhit sp. z o.o. |
| Country of origin | Poland / China / Germany |
| Customs code | 85059029 |
| Diameter Ø | 5 mm [±0,1 mm] |
| Height | 1 mm [±0,1 mm] |
| Weight | 0.15 g |
| Magnetization Direction | ↑ axial |
| Load capacity ~ ? | 0.32 kg / 3.12 N |
| Magnetic Induction ~ ? | 229.95 mT / 2300 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 simulation of the magnet - data
Presented values are the outcome of a mathematical simulation. Results were calculated on models for the class Nd2Fe14B. Real-world performance might slightly deviate from the simulation results. Use these data as a reference point for designers.
Table 1: Static force (pull vs gap) - power drop
MW 5x1 / N38
| Distance (mm) | Induction (Gauss) / mT | Pull Force (kg/lbs/g/N) | Risk Status |
|---|---|---|---|
| 0 mm |
2298 Gs
229.8 mT
|
0.32 kg / 0.71 pounds
320.0 g / 3.1 N
|
weak grip |
| 1 mm |
1570 Gs
157.0 mT
|
0.15 kg / 0.33 pounds
149.5 g / 1.5 N
|
weak grip |
| 2 mm |
890 Gs
89.0 mT
|
0.05 kg / 0.11 pounds
48.0 g / 0.5 N
|
weak grip |
| 3 mm |
495 Gs
49.5 mT
|
0.01 kg / 0.03 pounds
14.8 g / 0.1 N
|
weak grip |
| 5 mm |
178 Gs
17.8 mT
|
0.00 kg / 0.00 pounds
1.9 g / 0.0 N
|
weak grip |
| 10 mm |
31 Gs
3.1 mT
|
0.00 kg / 0.00 pounds
0.1 g / 0.0 N
|
weak grip |
| 15 mm |
10 Gs
1.0 mT
|
0.00 kg / 0.00 pounds
0.0 g / 0.0 N
|
weak grip |
| 20 mm |
4 Gs
0.4 mT
|
0.00 kg / 0.00 pounds
0.0 g / 0.0 N
|
weak grip |
| 30 mm |
1 Gs
0.1 mT
|
0.00 kg / 0.00 pounds
0.0 g / 0.0 N
|
weak grip |
| 50 mm |
0 Gs
0.0 mT
|
0.00 kg / 0.00 pounds
0.0 g / 0.0 N
|
weak grip |
Table 2: Shear hold (wall)
MW 5x1 / N38
| Distance (mm) | Friction coefficient | Pull Force (kg/lbs/g/N) |
|---|---|---|
| 0 mm | Stal (~0.2) |
0.06 kg / 0.14 pounds
64.0 g / 0.6 N
|
| 1 mm | Stal (~0.2) |
0.03 kg / 0.07 pounds
30.0 g / 0.3 N
|
| 2 mm | Stal (~0.2) |
0.01 kg / 0.02 pounds
10.0 g / 0.1 N
|
| 3 mm | Stal (~0.2) |
0.00 kg / 0.00 pounds
2.0 g / 0.0 N
|
| 5 mm | Stal (~0.2) |
0.00 kg / 0.00 pounds
0.0 g / 0.0 N
|
| 10 mm | Stal (~0.2) |
0.00 kg / 0.00 pounds
0.0 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: Vertical assembly (shearing) - behavior on slippery surfaces
MW 5x1 / N38
| Surface type | Friction coefficient / % Mocy | Max load (kg/lbs/g/N) |
|---|---|---|
| Raw steel |
µ = 0.3
30% Nominalnej Siły
|
0.10 kg / 0.21 pounds
96.0 g / 0.9 N
|
| Painted steel (standard) |
µ = 0.2
20% Nominalnej Siły
|
0.06 kg / 0.14 pounds
64.0 g / 0.6 N
|
| Oily/slippery steel |
µ = 0.1
10% Nominalnej Siły
|
0.03 kg / 0.07 pounds
32.0 g / 0.3 N
|
| Magnet with anti-slip rubber |
µ = 0.5
50% Nominalnej Siły
|
0.16 kg / 0.35 pounds
160.0 g / 1.6 N
|
Table 4: Material efficiency (saturation) - power losses
MW 5x1 / N38
| Steel thickness (mm) | % power | Real pull force (kg/lbs/g/N) |
|---|---|---|
| 0.5 mm |
|
0.03 kg / 0.07 pounds
32.0 g / 0.3 N
|
| 1 mm |
|
0.08 kg / 0.18 pounds
80.0 g / 0.8 N
|
| 2 mm |
|
0.16 kg / 0.35 pounds
160.0 g / 1.6 N
|
| 3 mm |
|
0.24 kg / 0.53 pounds
240.0 g / 2.4 N
|
| 5 mm |
|
0.32 kg / 0.71 pounds
320.0 g / 3.1 N
|
| 10 mm |
|
0.32 kg / 0.71 pounds
320.0 g / 3.1 N
|
| 11 mm |
|
0.32 kg / 0.71 pounds
320.0 g / 3.1 N
|
| 12 mm |
|
0.32 kg / 0.71 pounds
320.0 g / 3.1 N
|
Table 5: Working in heat (stability) - resistance threshold
MW 5x1 / N38
| Ambient temp. (°C) | Power loss | Remaining pull (kg/lbs/g/N) | Status |
|---|---|---|---|
| 20 °C | 0.0% |
0.32 kg / 0.71 pounds
320.0 g / 3.1 N
|
OK |
| 40 °C | -2.2% |
0.31 kg / 0.69 pounds
313.0 g / 3.1 N
|
OK |
| 60 °C | -4.4% |
0.31 kg / 0.67 pounds
305.9 g / 3.0 N
|
|
| 80 °C | -6.6% |
0.30 kg / 0.66 pounds
298.9 g / 2.9 N
|
|
| 100 °C | -28.8% |
0.23 kg / 0.50 pounds
227.8 g / 2.2 N
|
Table 6: Two magnets (attraction) - field collision
MW 5x1 / N38
| Gap (mm) | Attraction (kg/lbs) (N-S) | Shear Strength (kg/lbs/g/N) | Repulsion (kg/lbs) (N-N) |
|---|---|---|---|
| 0 mm |
0.64 kg / 1.41 pounds
3 860 Gs
|
0.10 kg / 0.21 pounds
96 g / 0.9 N
|
N/A |
| 1 mm |
0.47 kg / 1.04 pounds
3 948 Gs
|
0.07 kg / 0.16 pounds
71 g / 0.7 N
|
0.42 kg / 0.94 pounds
~0 Gs
|
| 2 mm |
0.30 kg / 0.66 pounds
3 141 Gs
|
0.04 kg / 0.10 pounds
45 g / 0.4 N
|
0.27 kg / 0.59 pounds
~0 Gs
|
| 3 mm |
0.17 kg / 0.38 pounds
2 388 Gs
|
0.03 kg / 0.06 pounds
26 g / 0.3 N
|
0.16 kg / 0.34 pounds
~0 Gs
|
| 5 mm |
0.05 kg / 0.12 pounds
1 322 Gs
|
0.01 kg / 0.02 pounds
8 g / 0.1 N
|
0.05 kg / 0.10 pounds
~0 Gs
|
| 10 mm |
0.00 kg / 0.01 pounds
355 Gs
|
0.00 kg / 0.00 pounds
1 g / 0.0 N
|
0.00 kg / 0.00 pounds
~0 Gs
|
| 20 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
|
| 50 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
|
| 60 mm |
0.00 kg / 0.00 pounds
3 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
2 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
1 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
1 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
1 Gs
|
0.00 kg / 0.00 pounds
0 g / 0.0 N
|
0.00 kg / 0.00 pounds
~0 Gs
|
Table 7: Hazards (electronics) - precautionary measures
MW 5x1 / N38
| Object / Device | Limit (Gauss) / mT | Safe distance |
|---|---|---|
| Pacemaker | 5 Gs (0.5 mT) | 2.0 cm |
| Hearing aid | 10 Gs (1.0 mT) | 2.0 cm |
| Timepiece | 20 Gs (2.0 mT) | 1.5 cm |
| Mobile device | 40 Gs (4.0 mT) | 1.0 cm |
| Remote | 50 Gs (5.0 mT) | 1.0 cm |
| Payment card | 400 Gs (40.0 mT) | 0.5 cm |
| HDD hard drive | 600 Gs (60.0 mT) | 0.5 cm |
Table 8: Impact energy (cracking risk) - collision effects
MW 5x1 / N38
| Start from (mm) | Speed (km/h) | Energy (J) | Predicted outcome |
|---|---|---|---|
| 10 mm |
46.59 km/h
(12.94 m/s)
|
0.01 J | |
| 30 mm |
80.68 km/h
(22.41 m/s)
|
0.04 J | |
| 50 mm |
104.16 km/h
(28.93 m/s)
|
0.06 J | |
| 100 mm |
147.30 km/h
(40.92 m/s)
|
0.13 J |
Table 9: Anti-corrosion coating durability
MW 5x1 / 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 (Pc)
MW 5x1 / N38
| Parameter | Value | SI Unit / Description |
|---|---|---|
| Magnetic Flux | 524 Mx | 5.2 µWb |
| Pc Coefficient | 0.29 | Low (Flat) |
Table 11: Physics of underwater searching
MW 5x1 / N38
| Environment | Effective steel pull | Effect |
|---|---|---|
| Air (land) | 0.32 kg | Standard |
| Water (riverbed) |
0.37 kg
(+0.05 kg buoyancy gain)
|
+14.5% |
1. Vertical hold
*Note: On a vertical surface, the magnet holds just a fraction of its perpendicular strength.
2. Plate thickness effect
*Thin metal sheet (e.g. 0.5mm PC case) significantly reduces the holding force.
3. Heat tolerance
*For standard magnets, the critical limit is 80°C.
4. Demagnetization curve and operating point (B-H)
chart generated for the permeance coefficient Pc (Permeance Coefficient) = 0.29
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% |
Sustainability
| recyclability (EoL) | 100% |
| recycled raw materials | ~10% (pre-cons) |
| carbon footprint | low / zredukowany |
| waste code (EWC) | 16 02 16 |
Other proposals
Pros and cons of Nd2Fe14B magnets.
Advantages
- Their strength is maintained, and after around 10 years it decreases only by ~1% (theoretically),
- Magnets perfectly resist against demagnetization caused by external fields,
- By applying a reflective layer of nickel, the element gains an professional look,
- The surface of neodymium magnets generates a strong magnetic field – this is one of their assets,
- Made from properly selected components, these magnets show impressive resistance to high heat, enabling them to function (depending on their form) at temperatures up to 230°C and above...
- Thanks to freedom in constructing and the capacity to modify to unusual requirements,
- Significant place in electronics industry – they are commonly used in mass storage devices, electromotive mechanisms, advanced medical instruments, as well as complex engineering applications.
- Thanks to concentrated force, small magnets offer high operating force, with minimal size,
Cons
- Susceptibility to cracking 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 increases their durability
- NdFeB magnets lose power when exposed to high temperatures. After reaching 80°C, many of them experience permanent weakening of strength (a factor is the shape as well as dimensions of the magnet). We offer magnets specially adapted to work at temperatures up to 230°C marked [AH], which are very resistant to heat
- Due to the susceptibility of magnets to corrosion in a humid environment, we advise using waterproof magnets made of rubber, plastic or other material resistant to moisture, in case of application outdoors
- We recommend cover - magnetic mechanism, due to difficulties in realizing nuts inside the magnet and complex shapes.
- Potential hazard related to microscopic parts of magnets are risky, when accidentally swallowed, which becomes key in the context of child safety. Furthermore, small components of these devices are able to complicate diagnosis medical in case of swallowing.
- High unit price – neodymium magnets are more expensive than other types of magnets (e.g. ferrite), which hinders application in large quantities
Lifting parameters
Maximum lifting force for a neodymium magnet – what contributes to 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
- without the slightest air gap between the magnet and steel
- for force applied at a right angle (in the magnet axis)
- in temp. approx. 20°C
What influences lifting capacity in practice
- Gap (betwixt the magnet and the metal), because even a tiny clearance (e.g. 0.5 mm) leads to a decrease in lifting capacity by up to 50% (this also applies to paint, corrosion or dirt).
- Angle of force application – highest force is reached only during pulling at a 90° angle. The force required to slide of the magnet along the surface is typically many times lower (approx. 1/5 of the lifting capacity).
- Metal thickness – the thinner the sheet, the weaker the hold. Magnetic flux penetrates through instead of converting into lifting capacity.
- Material type – the best choice is pure iron steel. Hardened steels may attract less.
- Surface condition – smooth surfaces ensure maximum contact, which improves field saturation. Uneven metal weaken the grip.
- Thermal environment – temperature increase causes a temporary drop of induction. It is worth remembering the thermal limit for a given model.
Lifting capacity testing was carried out on a smooth plate of suitable thickness, under perpendicular forces, however under parallel forces the load capacity is reduced by as much as 75%. Additionally, even a small distance between the magnet’s surface and the plate reduces the lifting capacity.
H&S for magnets
No play value
Always keep magnets away from children. Risk of swallowing is significant, and the effects of magnets connecting inside the body are life-threatening.
Nickel coating and allergies
Studies show that the nickel plating (standard magnet coating) is a potent allergen. If you have an allergy, prevent touching magnets with bare hands and opt for versions in plastic housing.
Fire risk
Combustion risk: Neodymium dust is highly flammable. Avoid machining magnets without safety gear as this may cause fire.
Powerful field
Handle magnets with awareness. Their immense force can shock even professionals. Be vigilant and do not underestimate their force.
Warning for heart patients
People with a heart stimulator should keep an safe separation from magnets. The magnetic field can interfere with the functioning of the life-saving device.
Threat to navigation
An intense magnetic field negatively affects the operation of magnetometers in phones and navigation systems. Keep magnets near a smartphone to prevent breaking the sensors.
Beware of splinters
Despite metallic appearance, neodymium is delicate and not impact-resistant. Do not hit, as the magnet may crumble into sharp, dangerous pieces.
Crushing risk
Large magnets can break fingers instantly. Do not place your hand betwixt two strong magnets.
Thermal limits
Watch the temperature. Exposing the magnet to high heat will permanently weaken its magnetic structure and strength.
Electronic hazard
Do not bring magnets near a wallet, laptop, or screen. The magnetism can destroy these devices and wipe information from cards.
