MW 10x5 / N38 - cylindrical magnet
cylindrical magnet
Catalog no 010011
GTIN/EAN: 5906301810100
Diameter Ø
10 mm [±0,1 mm]
Height
5 mm [±0,1 mm]
Weight
2.95 g
Magnetization Direction
↑ axial
Load capacity
3.19 kg / 31.28 N
Magnetic Induction
437.91 mT / 4379 Gs
Coating
[NiCuNi] Nickel
1.513 ZŁ with VAT / pcs + price for transport
1.230 ZŁ net + 23% VAT / pcs
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Detailed specification - MW 10x5 / N38 - cylindrical magnet
Specification / characteristics - MW 10x5 / N38 - cylindrical magnet
| properties | values |
|---|---|
| Cat. no. | 010011 |
| GTIN/EAN | 5906301810100 |
| Production/Distribution | Dhit sp. z o.o. |
| Country of origin | Poland / China / Germany |
| Customs code | 85059029 |
| Diameter Ø | 10 mm [±0,1 mm] |
| Height | 5 mm [±0,1 mm] |
| Weight | 2.95 g |
| Magnetization Direction | ↑ axial |
| Load capacity ~ ? | 3.19 kg / 31.28 N |
| Magnetic Induction ~ ? | 437.91 mT / 4379 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 modeling of the magnet - report
Presented data constitute the result of a physical analysis. Values rely on models for the material Nd2Fe14B. Operational conditions may differ. Treat these data as a preliminary roadmap when designing systems.
Table 1: Static force (force vs distance) - power drop
MW 10x5 / N38
| Distance (mm) | Induction (Gauss) / mT | Pull Force (kg/lbs/g/N) | Risk Status |
|---|---|---|---|
| 0 mm |
4376 Gs
437.6 mT
|
3.19 kg / 7.03 lbs
3190.0 g / 31.3 N
|
medium risk |
| 1 mm |
3547 Gs
354.7 mT
|
2.10 kg / 4.62 lbs
2095.9 g / 20.6 N
|
medium risk |
| 2 mm |
2743 Gs
274.3 mT
|
1.25 kg / 2.76 lbs
1252.9 g / 12.3 N
|
low risk |
| 3 mm |
2068 Gs
206.8 mT
|
0.71 kg / 1.57 lbs
712.2 g / 7.0 N
|
low risk |
| 5 mm |
1161 Gs
116.1 mT
|
0.22 kg / 0.50 lbs
224.7 g / 2.2 N
|
low risk |
| 10 mm |
336 Gs
33.6 mT
|
0.02 kg / 0.04 lbs
18.8 g / 0.2 N
|
low risk |
| 15 mm |
133 Gs
13.3 mT
|
0.00 kg / 0.01 lbs
2.9 g / 0.0 N
|
low risk |
| 20 mm |
65 Gs
6.5 mT
|
0.00 kg / 0.00 lbs
0.7 g / 0.0 N
|
low risk |
| 30 mm |
22 Gs
2.2 mT
|
0.00 kg / 0.00 lbs
0.1 g / 0.0 N
|
low risk |
| 50 mm |
5 Gs
0.5 mT
|
0.00 kg / 0.00 lbs
0.0 g / 0.0 N
|
low risk |
Table 2: Shear capacity (vertical surface)
MW 10x5 / N38
| Distance (mm) | Friction coefficient | Pull Force (kg/lbs/g/N) |
|---|---|---|
| 0 mm | Stal (~0.2) |
0.64 kg / 1.41 lbs
638.0 g / 6.3 N
|
| 1 mm | Stal (~0.2) |
0.42 kg / 0.93 lbs
420.0 g / 4.1 N
|
| 2 mm | Stal (~0.2) |
0.25 kg / 0.55 lbs
250.0 g / 2.5 N
|
| 3 mm | Stal (~0.2) |
0.14 kg / 0.31 lbs
142.0 g / 1.4 N
|
| 5 mm | Stal (~0.2) |
0.04 kg / 0.10 lbs
44.0 g / 0.4 N
|
| 10 mm | Stal (~0.2) |
0.00 kg / 0.01 lbs
4.0 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 (sliding) - behavior on slippery surfaces
MW 10x5 / N38
| Surface type | Friction coefficient / % Mocy | Max load (kg/lbs/g/N) |
|---|---|---|
| Raw steel |
µ = 0.3
30% Nominalnej Siły
|
0.96 kg / 2.11 lbs
957.0 g / 9.4 N
|
| Painted steel (standard) |
µ = 0.2
20% Nominalnej Siły
|
0.64 kg / 1.41 lbs
638.0 g / 6.3 N
|
| Oily/slippery steel |
µ = 0.1
10% Nominalnej Siły
|
0.32 kg / 0.70 lbs
319.0 g / 3.1 N
|
| Magnet with anti-slip rubber |
µ = 0.5
50% Nominalnej Siły
|
1.60 kg / 3.52 lbs
1595.0 g / 15.6 N
|
Table 4: Material efficiency (substrate influence) - power losses
MW 10x5 / N38
| Steel thickness (mm) | % power | Real pull force (kg/lbs/g/N) |
|---|---|---|
| 0.5 mm |
|
0.32 kg / 0.70 lbs
319.0 g / 3.1 N
|
| 1 mm |
|
0.80 kg / 1.76 lbs
797.5 g / 7.8 N
|
| 2 mm |
|
1.60 kg / 3.52 lbs
1595.0 g / 15.6 N
|
| 3 mm |
|
2.39 kg / 5.27 lbs
2392.5 g / 23.5 N
|
| 5 mm |
|
3.19 kg / 7.03 lbs
3190.0 g / 31.3 N
|
| 10 mm |
|
3.19 kg / 7.03 lbs
3190.0 g / 31.3 N
|
| 11 mm |
|
3.19 kg / 7.03 lbs
3190.0 g / 31.3 N
|
| 12 mm |
|
3.19 kg / 7.03 lbs
3190.0 g / 31.3 N
|
Table 5: Thermal stability (material behavior) - power drop
MW 10x5 / N38
| Ambient temp. (°C) | Power loss | Remaining pull (kg/lbs/g/N) | Status |
|---|---|---|---|
| 20 °C | 0.0% |
3.19 kg / 7.03 lbs
3190.0 g / 31.3 N
|
OK |
| 40 °C | -2.2% |
3.12 kg / 6.88 lbs
3119.8 g / 30.6 N
|
OK |
| 60 °C | -4.4% |
3.05 kg / 6.72 lbs
3049.6 g / 29.9 N
|
|
| 80 °C | -6.6% |
2.98 kg / 6.57 lbs
2979.5 g / 29.2 N
|
|
| 100 °C | -28.8% |
2.27 kg / 5.01 lbs
2271.3 g / 22.3 N
|
Table 6: Magnet-Magnet interaction (repulsion) - field collision
MW 10x5 / N38
| Gap (mm) | Attraction (kg/lbs) (N-S) | Shear Force (kg/lbs/g/N) | Repulsion (kg/lbs) (N-N) |
|---|---|---|---|
| 0 mm |
9.27 kg / 20.44 lbs
5 534 Gs
|
1.39 kg / 3.07 lbs
1391 g / 13.6 N
|
N/A |
| 1 mm |
7.63 kg / 16.83 lbs
7 941 Gs
|
1.15 kg / 2.52 lbs
1145 g / 11.2 N
|
6.87 kg / 15.15 lbs
~0 Gs
|
| 2 mm |
6.09 kg / 13.43 lbs
7 094 Gs
|
0.91 kg / 2.01 lbs
914 g / 9.0 N
|
5.48 kg / 12.09 lbs
~0 Gs
|
| 3 mm |
4.75 kg / 10.48 lbs
6 265 Gs
|
0.71 kg / 1.57 lbs
713 g / 7.0 N
|
4.28 kg / 9.43 lbs
~0 Gs
|
| 5 mm |
2.76 kg / 6.08 lbs
4 772 Gs
|
0.41 kg / 0.91 lbs
413 g / 4.1 N
|
2.48 kg / 5.47 lbs
~0 Gs
|
| 10 mm |
0.65 kg / 1.44 lbs
2 323 Gs
|
0.10 kg / 0.22 lbs
98 g / 1.0 N
|
0.59 kg / 1.30 lbs
~0 Gs
|
| 20 mm |
0.05 kg / 0.12 lbs
673 Gs
|
0.01 kg / 0.02 lbs
8 g / 0.1 N
|
0.05 kg / 0.11 lbs
~0 Gs
|
| 50 mm |
0.00 kg / 0.00 lbs
72 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
44 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
29 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
20 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
14 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
11 Gs
|
0.00 kg / 0.00 lbs
0 g / 0.0 N
|
0.00 kg / 0.00 lbs
~0 Gs
|
Table 7: Safety (HSE) (implants) - warnings
MW 10x5 / N38
| Object / Device | Limit (Gauss) / mT | Safe distance |
|---|---|---|
| Pacemaker | 5 Gs (0.5 mT) | 5.5 cm |
| Hearing aid | 10 Gs (1.0 mT) | 4.0 cm |
| Mechanical watch | 20 Gs (2.0 mT) | 3.5 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: Impact energy (kinetic energy) - warning
MW 10x5 / N38
| Start from (mm) | Speed (km/h) | Energy (J) | Predicted outcome |
|---|---|---|---|
| 10 mm |
33.29 km/h
(9.25 m/s)
|
0.13 J | |
| 30 mm |
57.44 km/h
(15.96 m/s)
|
0.38 J | |
| 50 mm |
74.16 km/h
(20.60 m/s)
|
0.63 J | |
| 100 mm |
104.87 km/h
(29.13 m/s)
|
1.25 J |
Table 9: Coating parameters (durability)
MW 10x5 / 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 10x5 / N38
| Parameter | Value | SI Unit / Description |
|---|---|---|
| Magnetic Flux | 3 489 Mx | 34.9 µWb |
| Pc Coefficient | 0.59 | Low (Flat) |
Table 11: Underwater work (magnet fishing)
MW 10x5 / N38
| Environment | Effective steel pull | Effect |
|---|---|---|
| Air (land) | 3.19 kg | Standard |
| Water (riverbed) |
3.65 kg
(+0.46 kg buoyancy gain)
|
+14.5% |
1. Vertical hold
*Note: On a vertical wall, the magnet retains just approx. 20-30% of its max power.
2. Steel thickness impact
*Thin metal sheet (e.g. computer case) severely weakens the holding force.
3. Temperature resistance
*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) = 0.59
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 |
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Advantages as well as disadvantages of Nd2Fe14B magnets.
Advantages
- They have unchanged lifting capacity, and over more than ten years their attraction force decreases symbolically – ~1% (according to theory),
- They feature excellent resistance to magnetism drop when exposed to external magnetic sources,
- The use of an aesthetic finish of noble metals (nickel, gold, silver) causes the element to look better,
- They feature high magnetic induction at the operating surface, making them more effective,
- Through (adequate) combination of ingredients, they can achieve high thermal strength, enabling action at temperatures approaching 230°C and above...
- Due to the possibility of precise shaping and customization to unique requirements, magnetic components can be manufactured in a broad palette of shapes and sizes, which increases their versatility,
- Significant place in advanced technology sectors – they are commonly used in computer drives, electric drive systems, medical devices, and modern systems.
- Compactness – despite small sizes they generate large force, making them ideal for precision applications
Cons
- Susceptibility to cracking is one of their disadvantages. Upon strong impact they can fracture. We recommend keeping them in a strong case, which not only protects them against impacts but also increases their durability
- When exposed to high temperature, neodymium magnets experience a drop in force. Often, when the temperature exceeds 80°C, their power decreases (depending on the size and 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, in case of application outdoors
- Limited possibility of making threads in the magnet and complex forms - preferred is casing - magnet mounting.
- Potential hazard resulting from small fragments of magnets pose a threat, in case of ingestion, which becomes key in the context of child safety. It is also worth noting that tiny parts of these magnets can be problematic in diagnostics medical after entering the body.
- Due to expensive raw materials, their price exceeds standard values,
Lifting parameters
Maximum magnetic pulling force – what it depends on?
- on a block made of structural steel, effectively closing the magnetic field
- whose transverse dimension equals approx. 10 mm
- with an polished contact surface
- under conditions of no distance (metal-to-metal)
- for force acting at a right angle (in the magnet axis)
- at standard ambient temperature
Practical aspects of lifting capacity – factors
- Distance (between the magnet and the plate), as even a tiny distance (e.g. 0.5 mm) results in a decrease in lifting capacity by up to 50% (this also applies to varnish, corrosion or dirt).
- Loading method – catalog parameter refers to pulling vertically. When slipping, the magnet holds significantly lower power (often approx. 20-30% of nominal force).
- Substrate thickness – for full efficiency, the steel must be sufficiently thick. Thin sheet limits the lifting capacity (the magnet "punches through" it).
- Material composition – different alloys reacts the same. Alloy additives worsen the attraction effect.
- Surface structure – the smoother and more polished the plate, the larger the contact zone and stronger the hold. Unevenness acts like micro-gaps.
- Heat – neodymium magnets have a sensitivity to temperature. At higher temperatures they lose power, and in frost gain strength (up to a certain limit).
Holding force was measured on the plate surface of 20 mm thickness, when the force acted perpendicularly, whereas under shearing force the holding force is lower. In addition, even a slight gap between the magnet and the plate reduces the load capacity.
H&S for magnets
Threat to navigation
GPS units and smartphones are extremely sensitive to magnetism. Close proximity with a strong magnet can decalibrate the internal compass in your phone.
Health Danger
Individuals with a pacemaker have to maintain an absolute distance from magnets. The magnetic field can interfere with the operation of the implant.
Physical harm
Danger of trauma: The attraction force is so immense that it can result in blood blisters, pinching, and broken bones. Use thick gloves.
Electronic devices
Do not bring magnets close to a purse, laptop, or screen. The magnetic field can irreversibly ruin these devices and erase data from cards.
Handling rules
Exercise caution. Rare earth magnets act from a distance and connect with massive power, often faster than you can move away.
Do not drill into magnets
Dust produced during machining of magnets is flammable. Do not drill into magnets without proper cooling and knowledge.
Operating temperature
Control the heat. Exposing the magnet above 80 degrees Celsius will ruin its magnetic structure and pulling force.
Nickel coating and allergies
A percentage of the population experience a contact allergy to Ni, which is the standard coating for NdFeB magnets. Extended handling might lead to a rash. We strongly advise use protective gloves.
Product not for children
Always store magnets away from children. Ingestion danger is significant, and the effects of magnets clamping inside the body are very dangerous.
Protective goggles
Despite the nickel coating, neodymium is brittle and cannot withstand shocks. Do not hit, as the magnet may crumble into sharp, dangerous pieces.
