MW 10x3 / N38 - cylindrical magnet
cylindrical magnet
Catalog no 010008
GTIN/EAN: 5906301810070
Diameter Ø
10 mm [±0,1 mm]
Height
3 mm [±0,1 mm]
Weight
1.77 g
Magnetization Direction
↑ axial
Load capacity
2.15 kg / 21.04 N
Magnetic Induction
318.70 mT / 3187 Gs
Coating
[NiCuNi] Nickel
0.726 ZŁ with VAT / pcs + price for transport
0.590 ZŁ net + 23% VAT / pcs
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Technical details - MW 10x3 / N38 - cylindrical magnet
Specification / characteristics - MW 10x3 / N38 - cylindrical magnet
| properties | values |
|---|---|
| Cat. no. | 010008 |
| GTIN/EAN | 5906301810070 |
| Production/Distribution | Dhit sp. z o.o. |
| Country of origin | Poland / China / Germany |
| Customs code | 85059029 |
| Diameter Ø | 10 mm [±0,1 mm] |
| Height | 3 mm [±0,1 mm] |
| Weight | 1.77 g |
| Magnetization Direction | ↑ axial |
| Load capacity ~ ? | 2.15 kg / 21.04 N |
| Magnetic Induction ~ ? | 318.70 mT / 3187 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 - technical parameters
The following information represent the outcome of a mathematical simulation. Results were calculated on models for the material Nd2Fe14B. Real-world performance may deviate from the simulation results. Use these data as a preliminary roadmap when designing systems.
Table 1: Static force (pull vs distance) - power drop
MW 10x3 / N38
| Distance (mm) | Induction (Gauss) / mT | Pull Force (kg/lbs/g/N) | Risk Status |
|---|---|---|---|
| 0 mm |
3185 Gs
318.5 mT
|
2.15 kg / 4.74 LBS
2150.0 g / 21.1 N
|
medium risk |
| 1 mm |
2657 Gs
265.7 mT
|
1.50 kg / 3.30 LBS
1496.2 g / 14.7 N
|
low risk |
| 2 mm |
2081 Gs
208.1 mT
|
0.92 kg / 2.02 LBS
918.1 g / 9.0 N
|
low risk |
| 3 mm |
1573 Gs
157.3 mT
|
0.52 kg / 1.16 LBS
524.4 g / 5.1 N
|
low risk |
| 5 mm |
874 Gs
87.4 mT
|
0.16 kg / 0.36 LBS
161.7 g / 1.6 N
|
low risk |
| 10 mm |
241 Gs
24.1 mT
|
0.01 kg / 0.03 LBS
12.3 g / 0.1 N
|
low risk |
| 15 mm |
92 Gs
9.2 mT
|
0.00 kg / 0.00 LBS
1.8 g / 0.0 N
|
low risk |
| 20 mm |
44 Gs
4.4 mT
|
0.00 kg / 0.00 LBS
0.4 g / 0.0 N
|
low risk |
| 30 mm |
14 Gs
1.4 mT
|
0.00 kg / 0.00 LBS
0.0 g / 0.0 N
|
low risk |
| 50 mm |
3 Gs
0.3 mT
|
0.00 kg / 0.00 LBS
0.0 g / 0.0 N
|
low risk |
Table 2: Shear load (vertical surface)
MW 10x3 / N38
| Distance (mm) | Friction coefficient | Pull Force (kg/lbs/g/N) |
|---|---|---|
| 0 mm | Stal (~0.2) |
0.43 kg / 0.95 LBS
430.0 g / 4.2 N
|
| 1 mm | Stal (~0.2) |
0.30 kg / 0.66 LBS
300.0 g / 2.9 N
|
| 2 mm | Stal (~0.2) |
0.18 kg / 0.41 LBS
184.0 g / 1.8 N
|
| 3 mm | Stal (~0.2) |
0.10 kg / 0.23 LBS
104.0 g / 1.0 N
|
| 5 mm | Stal (~0.2) |
0.03 kg / 0.07 LBS
32.0 g / 0.3 N
|
| 10 mm | Stal (~0.2) |
0.00 kg / 0.00 LBS
2.0 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) - behavior on slippery surfaces
MW 10x3 / N38
| Surface type | Friction coefficient / % Mocy | Max load (kg/lbs/g/N) |
|---|---|---|
| Raw steel |
µ = 0.3
30% Nominalnej Siły
|
0.64 kg / 1.42 LBS
645.0 g / 6.3 N
|
| Painted steel (standard) |
µ = 0.2
20% Nominalnej Siły
|
0.43 kg / 0.95 LBS
430.0 g / 4.2 N
|
| Oily/slippery steel |
µ = 0.1
10% Nominalnej Siły
|
0.22 kg / 0.47 LBS
215.0 g / 2.1 N
|
| Magnet with anti-slip rubber |
µ = 0.5
50% Nominalnej Siły
|
1.08 kg / 2.37 LBS
1075.0 g / 10.5 N
|
Table 4: Material efficiency (substrate influence) - sheet metal selection
MW 10x3 / N38
| Steel thickness (mm) | % power | Real pull force (kg/lbs/g/N) |
|---|---|---|
| 0.5 mm |
|
0.22 kg / 0.47 LBS
215.0 g / 2.1 N
|
| 1 mm |
|
0.54 kg / 1.18 LBS
537.5 g / 5.3 N
|
| 2 mm |
|
1.08 kg / 2.37 LBS
1075.0 g / 10.5 N
|
| 3 mm |
|
1.61 kg / 3.55 LBS
1612.5 g / 15.8 N
|
| 5 mm |
|
2.15 kg / 4.74 LBS
2150.0 g / 21.1 N
|
| 10 mm |
|
2.15 kg / 4.74 LBS
2150.0 g / 21.1 N
|
| 11 mm |
|
2.15 kg / 4.74 LBS
2150.0 g / 21.1 N
|
| 12 mm |
|
2.15 kg / 4.74 LBS
2150.0 g / 21.1 N
|
Table 5: Thermal resistance (stability) - resistance threshold
MW 10x3 / N38
| Ambient temp. (°C) | Power loss | Remaining pull (kg/lbs/g/N) | Status |
|---|---|---|---|
| 20 °C | 0.0% |
2.15 kg / 4.74 LBS
2150.0 g / 21.1 N
|
OK |
| 40 °C | -2.2% |
2.10 kg / 4.64 LBS
2102.7 g / 20.6 N
|
OK |
| 60 °C | -4.4% |
2.06 kg / 4.53 LBS
2055.4 g / 20.2 N
|
|
| 80 °C | -6.6% |
2.01 kg / 4.43 LBS
2008.1 g / 19.7 N
|
|
| 100 °C | -28.8% |
1.53 kg / 3.37 LBS
1530.8 g / 15.0 N
|
Table 6: Magnet-Magnet interaction (attraction) - field range
MW 10x3 / N38
| Gap (mm) | Attraction (kg/lbs) (N-S) | Lateral Force (kg/lbs/g/N) | Repulsion (kg/lbs) (N-N) |
|---|---|---|---|
| 0 mm |
4.91 kg / 10.83 LBS
4 754 Gs
|
0.74 kg / 1.62 LBS
737 g / 7.2 N
|
N/A |
| 1 mm |
4.18 kg / 9.22 LBS
5 877 Gs
|
0.63 kg / 1.38 LBS
627 g / 6.2 N
|
3.76 kg / 8.30 LBS
~0 Gs
|
| 2 mm |
3.42 kg / 7.54 LBS
5 314 Gs
|
0.51 kg / 1.13 LBS
513 g / 5.0 N
|
3.08 kg / 6.78 LBS
~0 Gs
|
| 3 mm |
2.71 kg / 5.98 LBS
4 732 Gs
|
0.41 kg / 0.90 LBS
407 g / 4.0 N
|
2.44 kg / 5.38 LBS
~0 Gs
|
| 5 mm |
1.59 kg / 3.52 LBS
3 630 Gs
|
0.24 kg / 0.53 LBS
239 g / 2.3 N
|
1.44 kg / 3.16 LBS
~0 Gs
|
| 10 mm |
0.37 kg / 0.81 LBS
1 747 Gs
|
0.06 kg / 0.12 LBS
55 g / 0.5 N
|
0.33 kg / 0.73 LBS
~0 Gs
|
| 20 mm |
0.03 kg / 0.06 LBS
483 Gs
|
0.00 kg / 0.01 LBS
4 g / 0.0 N
|
0.03 kg / 0.06 LBS
~0 Gs
|
| 50 mm |
0.00 kg / 0.00 LBS
48 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
29 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
19 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
13 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
9 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
7 Gs
|
0.00 kg / 0.00 LBS
0 g / 0.0 N
|
0.00 kg / 0.00 LBS
~0 Gs
|
Table 7: Safety (HSE) (electronics) - precautionary measures
MW 10x3 / N38
| Object / Device | Limit (Gauss) / mT | Safe distance |
|---|---|---|
| Pacemaker | 5 Gs (0.5 mT) | 4.5 cm |
| Hearing aid | 10 Gs (1.0 mT) | 3.5 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) | 2.0 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 10x3 / N38
| Start from (mm) | Speed (km/h) | Energy (J) | Predicted outcome |
|---|---|---|---|
| 10 mm |
35.27 km/h
(9.80 m/s)
|
0.08 J | |
| 30 mm |
60.88 km/h
(16.91 m/s)
|
0.25 J | |
| 50 mm |
78.60 km/h
(21.83 m/s)
|
0.42 J | |
| 100 mm |
111.15 km/h
(30.88 m/s)
|
0.84 J |
Table 9: Coating parameters (durability)
MW 10x3 / 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 10x3 / N38
| Parameter | Value | SI Unit / Description |
|---|---|---|
| Magnetic Flux | 2 694 Mx | 26.9 µWb |
| Pc Coefficient | 0.40 | Low (Flat) |
Table 11: Hydrostatics and buoyancy
MW 10x3 / N38
| Environment | Effective steel pull | Effect |
|---|---|---|
| Air (land) | 2.15 kg | Standard |
| Water (riverbed) |
2.46 kg
(+0.31 kg buoyancy gain)
|
+14.5% |
1. Vertical hold
*Note: On a vertical surface, the magnet retains only approx. 20-30% of its perpendicular strength.
2. Steel thickness impact
*Thin steel (e.g. computer case) significantly limits the holding force.
3. Temperature resistance
*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) = 0.40
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.
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% |
Sustainability
| recyclability (EoL) | 100% |
| recycled raw materials | ~10% (pre-cons) |
| carbon footprint | low / zredukowany |
| waste code (EWC) | 16 02 16 |
See also products
Pros as well as cons of neodymium magnets.
Benefits
- They retain attractive force for around ten years – the drop is just ~1% (based on simulations),
- Neodymium magnets are highly resistant to demagnetization caused by external magnetic fields,
- The use of an elegant finish of noble metals (nickel, gold, silver) causes the element to look better,
- They are known for high magnetic induction at the operating surface, which increases their power,
- Neodymium magnets are characterized by extremely high magnetic induction on the magnet surface and are able to act (depending on the shape) even at a temperature of 230°C or more...
- Thanks to the option of flexible shaping and customization to unique solutions, NdFeB magnets can be modeled in a broad palette of geometric configurations, which makes them more universal,
- Wide application in innovative solutions – they are used in computer drives, electric drive systems, precision medical tools, as well as industrial machines.
- Compactness – despite small sizes they provide effective action, making them ideal for precision applications
Limitations
- Susceptibility to cracking is one of their disadvantages. Upon intense impact they can fracture. 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 experience 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 resistant to moisture, in case of application outdoors
- Limited possibility of producing nuts in the magnet and complicated forms - recommended is a housing - magnet mounting.
- Possible danger related to microscopic parts of magnets are risky, if swallowed, which becomes key in the context of child safety. It is also worth noting that small elements of these products can complicate diagnosis medical when they are in the body.
- High unit price – neodymium magnets cost more than other types of magnets (e.g. ferrite), which can limit application in large quantities
Pull force analysis
Magnetic strength at its maximum – what affects it?
- with the application of a yoke made of low-carbon steel, guaranteeing maximum field concentration
- with a cross-section of at least 10 mm
- characterized by even structure
- with direct contact (without coatings)
- for force applied at a right angle (pull-off, not shear)
- at ambient temperature room level
Impact of factors on magnetic holding capacity in practice
- Distance – existence of any layer (rust, dirt, air) acts as an insulator, which reduces capacity 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 maximum value.
- Wall thickness – the thinner the sheet, the weaker the hold. Magnetic flux passes through the material instead of converting into lifting capacity.
- Steel grade – ideal substrate is high-permeability steel. Stainless steels may attract less.
- Plate texture – smooth surfaces ensure maximum contact, which improves force. Uneven metal weaken the grip.
- Temperature influence – hot environment reduces pulling force. Too high temperature can permanently demagnetize the magnet.
Holding force was tested on the plate surface of 20 mm thickness, when the force acted perpendicularly, however under parallel forces the holding force is lower. Moreover, even a slight gap between the magnet’s surface and the plate reduces the load capacity.
H&S for magnets
Magnetic media
Equipment safety: Strong magnets can damage payment cards and delicate electronics (heart implants, medical aids, mechanical watches).
Thermal limits
Do not overheat. Neodymium magnets are sensitive to heat. If you require resistance above 80°C, look for HT versions (H, SH, UH).
Skin irritation risks
It is widely known that the nickel plating (the usual finish) is a strong allergen. For allergy sufferers, refrain from touching magnets with bare hands or opt for coated magnets.
Safe operation
Before starting, read the rules. Uncontrolled attraction can destroy the magnet or injure your hand. Think ahead.
Magnetic interference
Note: rare earth magnets generate a field that interferes with precision electronics. Maintain a safe distance from your phone, tablet, and GPS.
Material brittleness
Neodymium magnets are sintered ceramics, meaning they are prone to chipping. Clashing of two magnets leads to them breaking into shards.
Swallowing risk
Product intended for adults. Small elements can be swallowed, leading to severe trauma. Store out of reach of children and animals.
Life threat
Life threat: Strong magnets can turn off pacemakers and defibrillators. Do not approach if you have medical devices.
Serious injuries
Mind your fingers. Two powerful magnets will join immediately with a force of massive weight, crushing anything in their path. Be careful!
Dust is flammable
Powder produced during cutting of magnets is self-igniting. Do not drill into magnets unless you are an expert.
