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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Detailed specification - 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 |
Physical simulation of the magnet - data
These values represent the direct effect of a physical simulation. Results were calculated on models for the class Nd2Fe14B. Real-world conditions may differ from theoretical values. Please consider these data as a preliminary roadmap when designing systems.
Table 1: Static pull force (force 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 LBS
320.0 g / 3.1 N
|
low risk |
| 1 mm |
1570 Gs
157.0 mT
|
0.15 kg / 0.33 LBS
149.5 g / 1.5 N
|
low risk |
| 2 mm |
890 Gs
89.0 mT
|
0.05 kg / 0.11 LBS
48.0 g / 0.5 N
|
low risk |
| 3 mm |
495 Gs
49.5 mT
|
0.01 kg / 0.03 LBS
14.8 g / 0.1 N
|
low risk |
| 5 mm |
178 Gs
17.8 mT
|
0.00 kg / 0.00 LBS
1.9 g / 0.0 N
|
low risk |
| 10 mm |
31 Gs
3.1 mT
|
0.00 kg / 0.00 LBS
0.1 g / 0.0 N
|
low risk |
| 15 mm |
10 Gs
1.0 mT
|
0.00 kg / 0.00 LBS
0.0 g / 0.0 N
|
low risk |
| 20 mm |
4 Gs
0.4 mT
|
0.00 kg / 0.00 LBS
0.0 g / 0.0 N
|
low risk |
| 30 mm |
1 Gs
0.1 mT
|
0.00 kg / 0.00 LBS
0.0 g / 0.0 N
|
low risk |
| 50 mm |
0 Gs
0.0 mT
|
0.00 kg / 0.00 LBS
0.0 g / 0.0 N
|
low risk |
Table 2: Sliding force (vertical surface)
MW 5x1 / N38
| Distance (mm) | Friction coefficient | Pull Force (kg/lbs/g/N) |
|---|---|---|
| 0 mm | Stal (~0.2) |
0.06 kg / 0.14 LBS
64.0 g / 0.6 N
|
| 1 mm | Stal (~0.2) |
0.03 kg / 0.07 LBS
30.0 g / 0.3 N
|
| 2 mm | Stal (~0.2) |
0.01 kg / 0.02 LBS
10.0 g / 0.1 N
|
| 3 mm | Stal (~0.2) |
0.00 kg / 0.00 LBS
2.0 g / 0.0 N
|
| 5 mm | Stal (~0.2) |
0.00 kg / 0.00 LBS
0.0 g / 0.0 N
|
| 10 mm | Stal (~0.2) |
0.00 kg / 0.00 LBS
0.0 g / 0.0 N
|
| 15 mm | Stal (~0.2) |
0.00 kg / 0.00 LBS
0.0 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: Wall mounting (shearing) - vertical pull
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 LBS
96.0 g / 0.9 N
|
| Painted steel (standard) |
µ = 0.2
20% Nominalnej Siły
|
0.06 kg / 0.14 LBS
64.0 g / 0.6 N
|
| Oily/slippery steel |
µ = 0.1
10% Nominalnej Siły
|
0.03 kg / 0.07 LBS
32.0 g / 0.3 N
|
| Magnet with anti-slip rubber |
µ = 0.5
50% Nominalnej Siły
|
0.16 kg / 0.35 LBS
160.0 g / 1.6 N
|
Table 4: Material efficiency (saturation) - sheet metal selection
MW 5x1 / N38
| Steel thickness (mm) | % power | Real pull force (kg/lbs/g/N) |
|---|---|---|
| 0.5 mm |
|
0.03 kg / 0.07 LBS
32.0 g / 0.3 N
|
| 1 mm |
|
0.08 kg / 0.18 LBS
80.0 g / 0.8 N
|
| 2 mm |
|
0.16 kg / 0.35 LBS
160.0 g / 1.6 N
|
| 3 mm |
|
0.24 kg / 0.53 LBS
240.0 g / 2.4 N
|
| 5 mm |
|
0.32 kg / 0.71 LBS
320.0 g / 3.1 N
|
| 10 mm |
|
0.32 kg / 0.71 LBS
320.0 g / 3.1 N
|
| 11 mm |
|
0.32 kg / 0.71 LBS
320.0 g / 3.1 N
|
| 12 mm |
|
0.32 kg / 0.71 LBS
320.0 g / 3.1 N
|
Table 5: Thermal resistance (material behavior) - thermal limit
MW 5x1 / N38
| Ambient temp. (°C) | Power loss | Remaining pull (kg/lbs/g/N) | Status |
|---|---|---|---|
| 20 °C | 0.0% |
0.32 kg / 0.71 LBS
320.0 g / 3.1 N
|
OK |
| 40 °C | -2.2% |
0.31 kg / 0.69 LBS
313.0 g / 3.1 N
|
OK |
| 60 °C | -4.4% |
0.31 kg / 0.67 LBS
305.9 g / 3.0 N
|
|
| 80 °C | -6.6% |
0.30 kg / 0.66 LBS
298.9 g / 2.9 N
|
|
| 100 °C | -28.8% |
0.23 kg / 0.50 LBS
227.8 g / 2.2 N
|
Table 6: Magnet-Magnet interaction (repulsion) - 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 LBS
3 860 Gs
|
0.10 kg / 0.21 LBS
96 g / 0.9 N
|
N/A |
| 1 mm |
0.47 kg / 1.04 LBS
3 948 Gs
|
0.07 kg / 0.16 LBS
71 g / 0.7 N
|
0.42 kg / 0.94 LBS
~0 Gs
|
| 2 mm |
0.30 kg / 0.66 LBS
3 141 Gs
|
0.04 kg / 0.10 LBS
45 g / 0.4 N
|
0.27 kg / 0.59 LBS
~0 Gs
|
| 3 mm |
0.17 kg / 0.38 LBS
2 388 Gs
|
0.03 kg / 0.06 LBS
26 g / 0.3 N
|
0.16 kg / 0.34 LBS
~0 Gs
|
| 5 mm |
0.05 kg / 0.12 LBS
1 322 Gs
|
0.01 kg / 0.02 LBS
8 g / 0.1 N
|
0.05 kg / 0.10 LBS
~0 Gs
|
| 10 mm |
0.00 kg / 0.01 LBS
355 Gs
|
0.00 kg / 0.00 LBS
1 g / 0.0 N
|
0.00 kg / 0.00 LBS
~0 Gs
|
| 20 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
|
| 50 mm |
0.00 kg / 0.00 LBS
5 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
3 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
2 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
1 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
1 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
1 Gs
|
0.00 kg / 0.00 LBS
0 g / 0.0 N
|
0.00 kg / 0.00 LBS
~0 Gs
|
Table 7: Protective zones (implants) - 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 |
| Mechanical watch | 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: Collisions (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: Construction data (Flux)
MW 5x1 / N38
| Parameter | Value | SI Unit / Description |
|---|---|---|
| Magnetic Flux | 524 Mx | 5.2 µWb |
| Pc Coefficient | 0.29 | Low (Flat) |
Table 11: Hydrostatics and buoyancy
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. Wall mount (shear)
*Note: On a vertical surface, the magnet holds merely approx. 20-30% of its nominal pull.
2. Plate thickness effect
*Thin steel (e.g. computer case) significantly weakens the holding force.
3. Heat tolerance
*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) = 0.29
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.
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% |
Environmental data
| recyclability (EoL) | 100% |
| recycled raw materials | ~10% (pre-cons) |
| carbon footprint | low / zredukowany |
| waste code (EWC) | 16 02 16 |
Other products
Pros as well as cons of neodymium magnets.
Pros
- They virtually do not lose strength, because even after 10 years the decline in efficiency is only ~1% (in laboratory conditions),
- Magnets effectively protect themselves against loss of magnetization caused by external fields,
- Thanks to the shiny finish, the surface of Ni-Cu-Ni, gold-plated, or silver-plated gives an visually attractive appearance,
- Magnetic induction on the surface of the magnet turns out to be maximum,
- Neodymium magnets are characterized by extremely high magnetic induction on the magnet surface and can function (depending on the shape) even at a temperature of 230°C or more...
- Thanks to the option of precise forming and customization to custom needs, magnetic components can be produced in a broad palette of geometric configurations, which amplifies use scope,
- Fundamental importance in innovative solutions – they are utilized in computer drives, electromotive mechanisms, medical devices, and industrial machines.
- Relatively small size with high pulling force – neodymium magnets offer high power in small dimensions, which enables their usage in compact constructions
Cons
- Brittleness is one of their disadvantages. Upon intense impact they can break. We recommend keeping them in a steel housing, which not only protects them against impacts but also increases their durability
- When exposed to high temperature, neodymium magnets suffer a drop in power. Often, when the temperature exceeds 80°C, their strength 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 advise using waterproof magnets made of rubber, plastic or other material stable to moisture, when using outdoors
- Due to limitations in producing threads and complex shapes in magnets, we propose using casing - magnetic mechanism.
- Potential hazard related to microscopic parts of magnets can be dangerous, in case of ingestion, which becomes key in the context of child safety. It is also worth noting that 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
Holding force characteristics
Maximum lifting force for a neodymium magnet – what contributes to it?
- using a sheet made of high-permeability steel, acting as a ideal flux conductor
- possessing a thickness of at least 10 mm to ensure full flux closure
- characterized by smoothness
- with direct contact (without paint)
- during pulling in a direction perpendicular to the mounting surface
- in temp. approx. 20°C
Lifting capacity in practice – influencing factors
- Clearance – existence of any layer (paint, dirt, gap) acts as an insulator, which lowers power steeply (even by 50% at 0.5 mm).
- Pull-off angle – remember that the magnet holds strongest perpendicularly. Under sliding down, the capacity drops drastically, often to levels of 20-30% of the nominal value.
- Substrate thickness – to utilize 100% power, the steel must be adequately massive. Paper-thin metal restricts the lifting capacity (the magnet "punches through" it).
- Material type – ideal substrate is high-permeability steel. Hardened steels may have worse magnetic properties.
- Surface structure – the more even the surface, the better the adhesion and higher the lifting capacity. Roughness acts like micro-gaps.
- Heat – neodymium magnets have a negative temperature coefficient. At higher temperatures they lose power, and in frost they can be stronger (up to a certain limit).
Holding force was measured on the plate surface of 20 mm thickness, when the force acted perpendicularly, in contrast under attempts to slide the magnet the load capacity is reduced by as much as fivefold. In addition, even a minimal clearance between the magnet and the plate decreases the lifting capacity.
Safe handling of neodymium magnets
Skin irritation risks
Warning for allergy sufferers: The Ni-Cu-Ni coating contains nickel. If redness occurs, cease working with magnets and wear gloves.
Crushing risk
Watch your fingers. Two large magnets will snap together instantly with a force of several hundred kilograms, crushing everything in their path. Exercise extreme caution!
Magnetic interference
GPS units and smartphones are extremely susceptible to magnetic fields. Close proximity with a powerful NdFeB magnet can permanently damage the sensors in your phone.
Flammability
Powder created during cutting of magnets is flammable. Avoid drilling into magnets without proper cooling and knowledge.
Life threat
Medical warning: Strong magnets can turn off heart devices and defibrillators. Stay away if you have medical devices.
No play value
These products are not intended for children. Accidental ingestion of several magnets may result in them connecting inside the digestive tract, which constitutes a severe health hazard and necessitates urgent medical intervention.
Heat sensitivity
Standard neodymium magnets (N-type) lose power when the temperature exceeds 80°C. This process is irreversible.
Protective goggles
Protect your eyes. Magnets can explode upon uncontrolled impact, launching shards into the air. Eye protection is mandatory.
Keep away from computers
Intense magnetic fields can corrupt files on credit cards, HDDs, and storage devices. Keep a distance of min. 10 cm.
Conscious usage
Handle magnets with awareness. Their huge power can surprise even professionals. Be vigilant and do not underestimate their power.
