MW 10x10 / N38 - cylindrical magnet
cylindrical magnet
Catalog no 010004
GTIN/EAN: 5906301810032
Diameter Ø
10 mm [±0,1 mm]
Height
10 mm [±0,1 mm]
Weight
5.89 g
Magnetization Direction
↑ axial
Load capacity
3.18 kg / 31.15 N
Magnetic Induction
553.84 mT / 5538 Gs
Coating
[NiCuNi] Nickel
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Technical - MW 10x10 / N38 - cylindrical magnet
Specification / characteristics - MW 10x10 / N38 - cylindrical magnet
| properties | values |
|---|---|
| Cat. no. | 010004 |
| GTIN/EAN | 5906301810032 |
| Production/Distribution | Dhit sp. z o.o. |
| Country of origin | Poland / China / Germany |
| Customs code | 85059029 |
| Diameter Ø | 10 mm [±0,1 mm] |
| Height | 10 mm [±0,1 mm] |
| Weight | 5.89 g |
| Magnetization Direction | ↑ axial |
| Load capacity ~ ? | 3.18 kg / 31.15 N |
| Magnetic Induction ~ ? | 553.84 mT / 5538 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 product - technical parameters
These data are the result of a mathematical calculation. Results rely on models for the material Nd2Fe14B. Real-world conditions might slightly differ from theoretical values. Please consider these data as a supplementary guide for designers.
Table 1: Static pull force (pull vs distance) - characteristics
MW 10x10 / N38
| Distance (mm) | Induction (Gauss) / mT | Pull Force (kg) | Risk Status |
|---|---|---|---|
| 0 mm |
5534 Gs
553.4 mT
|
3.18 kg / 3180.0 g
31.2 N
|
medium risk |
| 1 mm |
4428 Gs
442.8 mT
|
2.04 kg / 2036.1 g
20.0 N
|
medium risk |
| 2 mm |
3420 Gs
342.0 mT
|
1.21 kg / 1214.8 g
11.9 N
|
safe |
| 3 mm |
2597 Gs
259.7 mT
|
0.70 kg / 700.2 g
6.9 N
|
safe |
| 5 mm |
1498 Gs
149.8 mT
|
0.23 kg / 232.9 g
2.3 N
|
safe |
| 10 mm |
469 Gs
46.9 mT
|
0.02 kg / 22.9 g
0.2 N
|
safe |
| 15 mm |
198 Gs
19.8 mT
|
0.00 kg / 4.1 g
0.0 N
|
safe |
| 20 mm |
101 Gs
10.1 mT
|
0.00 kg / 1.1 g
0.0 N
|
safe |
| 30 mm |
36 Gs
3.6 mT
|
0.00 kg / 0.1 g
0.0 N
|
safe |
| 50 mm |
9 Gs
0.9 mT
|
0.00 kg / 0.0 g
0.0 N
|
safe |
Table 2: Shear load (vertical surface)
MW 10x10 / N38
| Distance (mm) | Friction coefficient | Pull Force (kg) |
|---|---|---|
| 0 mm | Stal (~0.2) |
0.64 kg / 636.0 g
6.2 N
|
| 1 mm | Stal (~0.2) |
0.41 kg / 408.0 g
4.0 N
|
| 2 mm | Stal (~0.2) |
0.24 kg / 242.0 g
2.4 N
|
| 3 mm | Stal (~0.2) |
0.14 kg / 140.0 g
1.4 N
|
| 5 mm | Stal (~0.2) |
0.05 kg / 46.0 g
0.5 N
|
| 10 mm | Stal (~0.2) |
0.00 kg / 4.0 g
0.0 N
|
| 15 mm | Stal (~0.2) |
0.00 kg / 0.0 g
0.0 N
|
| 20 mm | Stal (~0.2) |
0.00 kg / 0.0 g
0.0 N
|
| 30 mm | Stal (~0.2) |
0.00 kg / 0.0 g
0.0 N
|
| 50 mm | Stal (~0.2) |
0.00 kg / 0.0 g
0.0 N
|
Table 3: Wall mounting (sliding) - behavior on slippery surfaces
MW 10x10 / N38
| Surface type | Friction coefficient / % Mocy | Max load (kg) |
|---|---|---|
| Raw steel |
µ = 0.3
30% Nominalnej Siły
|
0.95 kg / 954.0 g
9.4 N
|
| Painted steel (standard) |
µ = 0.2
20% Nominalnej Siły
|
0.64 kg / 636.0 g
6.2 N
|
| Oily/slippery steel |
µ = 0.1
10% Nominalnej Siły
|
0.32 kg / 318.0 g
3.1 N
|
| Magnet with anti-slip rubber |
µ = 0.5
50% Nominalnej Siły
|
1.59 kg / 1590.0 g
15.6 N
|
Table 4: Material efficiency (saturation) - power losses
MW 10x10 / N38
| Steel thickness (mm) | % power | Real pull force (kg) |
|---|---|---|
| 0.5 mm |
|
0.32 kg / 318.0 g
3.1 N
|
| 1 mm |
|
0.80 kg / 795.0 g
7.8 N
|
| 2 mm |
|
1.59 kg / 1590.0 g
15.6 N
|
| 5 mm |
|
3.18 kg / 3180.0 g
31.2 N
|
| 10 mm |
|
3.18 kg / 3180.0 g
31.2 N
|
Table 5: Thermal resistance (material behavior) - thermal limit
MW 10x10 / N38
| Ambient temp. (°C) | Power loss | Remaining pull | Status |
|---|---|---|---|
| 20 °C | 0.0% |
3.18 kg / 3180.0 g
31.2 N
|
OK |
| 40 °C | -2.2% |
3.11 kg / 3110.0 g
30.5 N
|
OK |
| 60 °C | -4.4% |
3.04 kg / 3040.1 g
29.8 N
|
OK |
| 80 °C | -6.6% |
2.97 kg / 2970.1 g
29.1 N
|
|
| 100 °C | -28.8% |
2.26 kg / 2264.2 g
22.2 N
|
Table 6: Magnet-Magnet interaction (repulsion) - forces in the system
MW 10x10 / N38
| Gap (mm) | Attraction (kg) (N-S) | Repulsion (kg) (N-N) |
|---|---|---|
| 0 mm |
14.83 kg / 14830 g
145.5 N
6 003 Gs
|
N/A |
| 1 mm |
12.01 kg / 12012 g
117.8 N
9 962 Gs
|
10.81 kg / 10811 g
106.1 N
~0 Gs
|
| 2 mm |
9.50 kg / 9495 g
93.1 N
8 857 Gs
|
8.55 kg / 8546 g
83.8 N
~0 Gs
|
| 3 mm |
7.38 kg / 7381 g
72.4 N
7 809 Gs
|
6.64 kg / 6643 g
65.2 N
~0 Gs
|
| 5 mm |
4.31 kg / 4311 g
42.3 N
5 968 Gs
|
3.88 kg / 3880 g
38.1 N
~0 Gs
|
| 10 mm |
1.09 kg / 1086 g
10.7 N
2 996 Gs
|
0.98 kg / 978 g
9.6 N
~0 Gs
|
| 20 mm |
0.11 kg / 107 g
1.0 N
939 Gs
|
0.10 kg / 96 g
0.9 N
~0 Gs
|
| 50 mm |
0.00 kg / 2 g
0.0 N
116 Gs
|
0.00 kg / 0 g
0.0 N
~0 Gs
|
Table 7: Protective zones (electronics) - precautionary measures
MW 10x10 / N38
| Object / Device | Limit (Gauss) / mT | Safe distance |
|---|---|---|
| Pacemaker | 5 Gs (0.5 mT) | 6.5 cm |
| Hearing aid | 10 Gs (1.0 mT) | 5.0 cm |
| Timepiece | 20 Gs (2.0 mT) | 4.0 cm |
| Mobile device | 40 Gs (4.0 mT) | 3.0 cm |
| Car key | 50 Gs (5.0 mT) | 3.0 cm |
| Payment card | 400 Gs (40.0 mT) | 1.5 cm |
| HDD hard drive | 600 Gs (60.0 mT) | 1.0 cm |
Table 8: Impact energy (kinetic energy) - warning
MW 10x10 / N38
| Start from (mm) | Speed (km/h) | Energy (J) | Predicted outcome |
|---|---|---|---|
| 10 mm |
23.54 km/h
(6.54 m/s)
|
0.13 J | |
| 30 mm |
40.59 km/h
(11.27 m/s)
|
0.37 J | |
| 50 mm |
52.40 km/h
(14.56 m/s)
|
0.62 J | |
| 100 mm |
74.10 km/h
(20.58 m/s)
|
1.25 J |
Table 9: Corrosion resistance
MW 10x10 / 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 (Pc)
MW 10x10 / N38
| Parameter | Value | SI Unit / Description |
|---|---|---|
| Magnetic Flux | 4 481 Mx | 44.8 µWb |
| Pc Coefficient | 0.89 | High (Stable) |
Table 11: Underwater work (magnet fishing)
MW 10x10 / N38
| Environment | Effective steel pull | Effect |
|---|---|---|
| Air (land) | 3.18 kg | Standard |
| Water (riverbed) |
3.64 kg
(+0.46 kg Buoyancy gain)
|
+14.5% |
1. Vertical hold
*Caution: On a vertical surface, the magnet holds only ~20% of its nominal pull.
2. Plate thickness effect
*Thin metal sheet (e.g. computer case) drastically weakens the holding force.
3. Power loss vs temp
*For N38 material, the critical limit is 80°C.
4. Demagnetization curve and operating point (B-H)
chart generated for the permeance coefficient Pc (Permeance Coefficient) = 0.89
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.
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 |
See also products
Pros and cons of Nd2Fe14B magnets.
Strengths
- They do not lose strength, even after around ten years – the decrease in power is only ~1% (theoretically),
- They maintain their magnetic properties even under strong external field,
- In other words, due to the shiny layer of nickel, the element gains a professional look,
- Neodymium magnets achieve maximum magnetic induction on a small area, which increases force concentration,
- Through (adequate) combination of ingredients, they can achieve high thermal resistance, enabling functioning at temperatures reaching 230°C and above...
- Thanks to flexibility in designing and the capacity to modify to individual projects,
- Huge importance in innovative solutions – they serve a role in hard drives, electric drive systems, medical devices, as well as multitasking production systems.
- Thanks to concentrated force, small magnets offer high operating force, in miniature format,
Disadvantages
- At strong impacts they can break, therefore we recommend placing them in strong housings. A metal housing provides additional protection against damage and increases the magnet's durability.
- When exposed to high temperature, neodymium magnets experience a drop in strength. 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
- When exposed to humidity, magnets usually rust. To use them in conditions outside, it is recommended to use protective magnets, such as those in rubber or plastics, which prevent oxidation as well as corrosion.
- We recommend casing - magnetic holder, due to difficulties in realizing nuts inside the magnet and complex shapes.
- Possible danger related to microscopic parts of magnets are risky, if swallowed, which is particularly important in the context of child safety. Furthermore, small elements 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 can limit application in large quantities
Holding force characteristics
Optimal lifting capacity of a neodymium magnet – what affects it?
- with the contact of a sheet made of low-carbon steel, guaranteeing full magnetic saturation
- whose thickness is min. 10 mm
- characterized by smoothness
- without any air gap between the magnet and steel
- under vertical force direction (90-degree angle)
- at conditions approx. 20°C
Lifting capacity in real conditions – factors
- Distance (between 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 varnish, corrosion or dirt).
- Direction of force – highest force is available only during perpendicular pulling. The shear force of the magnet along the plate is usually several times smaller (approx. 1/5 of the lifting capacity).
- Base massiveness – too thin sheet does not accept the full field, causing part of the flux to be escaped to the other side.
- Material composition – different alloys attracts identically. High carbon content worsen the interaction with the magnet.
- Surface condition – smooth surfaces guarantee perfect abutment, which increases field saturation. Uneven metal weaken the grip.
- Temperature influence – high temperature weakens magnetic field. Too high temperature can permanently demagnetize the magnet.
Lifting capacity testing was conducted on plates with a smooth surface of suitable thickness, under perpendicular forces, however under attempts to slide the magnet the holding force is lower. Additionally, even a small distance between the magnet and the plate reduces the lifting capacity.
Safety rules for work with NdFeB magnets
Metal Allergy
Nickel alert: The Ni-Cu-Ni coating contains nickel. If skin irritation occurs, immediately stop working with magnets and wear gloves.
Life threat
Patients with a pacemaker have to maintain an absolute distance from magnets. The magnetism can disrupt the functioning of the life-saving device.
Handling guide
Use magnets with awareness. Their powerful strength can surprise even experienced users. Stay alert and respect their force.
Heat sensitivity
Monitor thermal conditions. Heating the magnet to high heat will permanently weaken its properties and pulling force.
No play value
NdFeB magnets are not toys. Eating multiple magnets can lead to them connecting inside the digestive tract, which constitutes a direct threat to life and requires urgent medical intervention.
Crushing risk
Protect your hands. Two large magnets will snap together instantly with a force of massive weight, crushing anything in their path. Be careful!
Protect data
Do not bring magnets close to a wallet, computer, or screen. The magnetic field can irreversibly ruin these devices and wipe information from cards.
GPS Danger
Remember: neodymium magnets generate a field that confuses sensitive sensors. Keep a separation from your phone, tablet, and GPS.
Dust is flammable
Combustion risk: Rare earth powder is highly flammable. Do not process magnets without safety gear as this risks ignition.
Eye protection
NdFeB magnets are ceramic materials, meaning they are very brittle. Collision of two magnets leads to them cracking into small pieces.
