MPL 10x10x4 / N38 - lamellar magnet
lamellar magnet
Catalog no 020112
GTIN/EAN: 5906301811183
length
10 mm [±0,1 mm]
Width
10 mm [±0,1 mm]
Height
4 mm [±0,1 mm]
Weight
3 g
Magnetization Direction
↑ axial
Load capacity
3.10 kg / 30.39 N
Magnetic Induction
360.85 mT / 3608 Gs
Coating
[NiCuNi] Nickel
1.538 ZŁ with VAT / pcs + price for transport
1.250 ZŁ net + 23% VAT / pcs
bulk discounts:
Need more?
Call us now
+48 22 499 98 98
if you prefer contact us by means of
form
the contact section.
Force along with shape of magnetic components can be verified using our
online calculation tool.
Orders submitted before 14:00 will be dispatched today!
Technical details - MPL 10x10x4 / N38 - lamellar magnet
Specification / characteristics - MPL 10x10x4 / N38 - lamellar magnet
| properties | values |
|---|---|
| Cat. no. | 020112 |
| GTIN/EAN | 5906301811183 |
| Production/Distribution | Dhit sp. z o.o. |
| Country of origin | Poland / China / Germany |
| Customs code | 85059029 |
| length | 10 mm [±0,1 mm] |
| Width | 10 mm [±0,1 mm] |
| Height | 4 mm [±0,1 mm] |
| Weight | 3 g |
| Magnetization Direction | ↑ axial |
| Load capacity ~ ? | 3.10 kg / 30.39 N |
| Magnetic Induction ~ ? | 360.85 mT / 3608 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 |
Engineering analysis of the product - data
These data represent the result of a engineering analysis. Values were calculated on algorithms for the class Nd2Fe14B. Actual conditions may differ. Use these calculations as a preliminary roadmap when designing systems.
Table 1: Static pull force (pull vs gap) - power drop
MPL 10x10x4 / N38
| Distance (mm) | Induction (Gauss) / mT | Pull Force (kg/lbs/g/N) | Risk Status |
|---|---|---|---|
| 0 mm |
3606 Gs
360.6 mT
|
3.10 kg / 6.83 LBS
3100.0 g / 30.4 N
|
warning |
| 1 mm |
3035 Gs
303.5 mT
|
2.20 kg / 4.84 LBS
2195.5 g / 21.5 N
|
warning |
| 2 mm |
2436 Gs
243.6 mT
|
1.41 kg / 3.12 LBS
1413.8 g / 13.9 N
|
low risk |
| 3 mm |
1900 Gs
190.0 mT
|
0.86 kg / 1.90 LBS
860.8 g / 8.4 N
|
low risk |
| 5 mm |
1127 Gs
112.7 mT
|
0.30 kg / 0.67 LBS
302.7 g / 3.0 N
|
low risk |
| 10 mm |
347 Gs
34.7 mT
|
0.03 kg / 0.06 LBS
28.8 g / 0.3 N
|
low risk |
| 15 mm |
140 Gs
14.0 mT
|
0.00 kg / 0.01 LBS
4.6 g / 0.0 N
|
low risk |
| 20 mm |
68 Gs
6.8 mT
|
0.00 kg / 0.00 LBS
1.1 g / 0.0 N
|
low risk |
| 30 mm |
23 Gs
2.3 mT
|
0.00 kg / 0.00 LBS
0.1 g / 0.0 N
|
low risk |
| 50 mm |
6 Gs
0.6 mT
|
0.00 kg / 0.00 LBS
0.0 g / 0.0 N
|
low risk |
Table 2: Shear capacity (wall)
MPL 10x10x4 / N38
| Distance (mm) | Friction coefficient | Pull Force (kg/lbs/g/N) |
|---|---|---|
| 0 mm | Stal (~0.2) |
0.62 kg / 1.37 LBS
620.0 g / 6.1 N
|
| 1 mm | Stal (~0.2) |
0.44 kg / 0.97 LBS
440.0 g / 4.3 N
|
| 2 mm | Stal (~0.2) |
0.28 kg / 0.62 LBS
282.0 g / 2.8 N
|
| 3 mm | Stal (~0.2) |
0.17 kg / 0.38 LBS
172.0 g / 1.7 N
|
| 5 mm | Stal (~0.2) |
0.06 kg / 0.13 LBS
60.0 g / 0.6 N
|
| 10 mm | Stal (~0.2) |
0.01 kg / 0.01 LBS
6.0 g / 0.1 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
MPL 10x10x4 / N38
| Surface type | Friction coefficient / % Mocy | Max load (kg/lbs/g/N) |
|---|---|---|
| Raw steel |
µ = 0.3
30% Nominalnej Siły
|
0.93 kg / 2.05 LBS
930.0 g / 9.1 N
|
| Painted steel (standard) |
µ = 0.2
20% Nominalnej Siły
|
0.62 kg / 1.37 LBS
620.0 g / 6.1 N
|
| Oily/slippery steel |
µ = 0.1
10% Nominalnej Siły
|
0.31 kg / 0.68 LBS
310.0 g / 3.0 N
|
| Magnet with anti-slip rubber |
µ = 0.5
50% Nominalnej Siły
|
1.55 kg / 3.42 LBS
1550.0 g / 15.2 N
|
Table 4: Steel thickness (saturation) - power losses
MPL 10x10x4 / N38
| Steel thickness (mm) | % power | Real pull force (kg/lbs/g/N) |
|---|---|---|
| 0.5 mm |
|
0.31 kg / 0.68 LBS
310.0 g / 3.0 N
|
| 1 mm |
|
0.78 kg / 1.71 LBS
775.0 g / 7.6 N
|
| 2 mm |
|
1.55 kg / 3.42 LBS
1550.0 g / 15.2 N
|
| 3 mm |
|
2.33 kg / 5.13 LBS
2325.0 g / 22.8 N
|
| 5 mm |
|
3.10 kg / 6.83 LBS
3100.0 g / 30.4 N
|
| 10 mm |
|
3.10 kg / 6.83 LBS
3100.0 g / 30.4 N
|
| 11 mm |
|
3.10 kg / 6.83 LBS
3100.0 g / 30.4 N
|
| 12 mm |
|
3.10 kg / 6.83 LBS
3100.0 g / 30.4 N
|
Table 5: Thermal stability (material behavior) - thermal limit
MPL 10x10x4 / N38
| Ambient temp. (°C) | Power loss | Remaining pull (kg/lbs/g/N) | Status |
|---|---|---|---|
| 20 °C | 0.0% |
3.10 kg / 6.83 LBS
3100.0 g / 30.4 N
|
OK |
| 40 °C | -2.2% |
3.03 kg / 6.68 LBS
3031.8 g / 29.7 N
|
OK |
| 60 °C | -4.4% |
2.96 kg / 6.53 LBS
2963.6 g / 29.1 N
|
|
| 80 °C | -6.6% |
2.90 kg / 6.38 LBS
2895.4 g / 28.4 N
|
|
| 100 °C | -28.8% |
2.21 kg / 4.87 LBS
2207.2 g / 21.7 N
|
Table 6: Magnet-Magnet interaction (repulsion) - field range
MPL 10x10x4 / N38
| Gap (mm) | Attraction (kg/lbs) (N-S) | Lateral Force (kg/lbs/g/N) | Repulsion (kg/lbs) (N-N) |
|---|---|---|---|
| 0 mm |
8.02 kg / 17.68 LBS
5 067 Gs
|
1.20 kg / 2.65 LBS
1203 g / 11.8 N
|
N/A |
| 1 mm |
6.85 kg / 15.11 LBS
6 667 Gs
|
1.03 kg / 2.27 LBS
1028 g / 10.1 N
|
6.17 kg / 13.59 LBS
~0 Gs
|
| 2 mm |
5.68 kg / 12.52 LBS
6 070 Gs
|
0.85 kg / 1.88 LBS
852 g / 8.4 N
|
5.11 kg / 11.27 LBS
~0 Gs
|
| 3 mm |
4.60 kg / 10.14 LBS
5 463 Gs
|
0.69 kg / 1.52 LBS
690 g / 6.8 N
|
4.14 kg / 9.13 LBS
~0 Gs
|
| 5 mm |
2.87 kg / 6.32 LBS
4 313 Gs
|
0.43 kg / 0.95 LBS
430 g / 4.2 N
|
2.58 kg / 5.69 LBS
~0 Gs
|
| 10 mm |
0.78 kg / 1.73 LBS
2 254 Gs
|
0.12 kg / 0.26 LBS
117 g / 1.2 N
|
0.70 kg / 1.55 LBS
~0 Gs
|
| 20 mm |
0.07 kg / 0.16 LBS
695 Gs
|
0.01 kg / 0.02 LBS
11 g / 0.1 N
|
0.07 kg / 0.15 LBS
~0 Gs
|
| 50 mm |
0.00 kg / 0.00 LBS
76 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
46 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
30 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
21 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
15 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) (electronics) - precautionary measures
MPL 10x10x4 / N38
| Object / Device | Limit (Gauss) / mT | Safe distance |
|---|---|---|
| Pacemaker | 5 Gs (0.5 mT) | 5.5 cm |
| Hearing aid | 10 Gs (1.0 mT) | 4.5 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 (cracking risk) - warning
MPL 10x10x4 / N38
| Start from (mm) | Speed (km/h) | Energy (J) | Predicted outcome |
|---|---|---|---|
| 10 mm |
32.61 km/h
(9.06 m/s)
|
0.12 J | |
| 30 mm |
56.15 km/h
(15.60 m/s)
|
0.36 J | |
| 50 mm |
72.49 km/h
(20.14 m/s)
|
0.61 J | |
| 100 mm |
102.52 km/h
(28.48 m/s)
|
1.22 J |
Table 9: Surface protection spec
MPL 10x10x4 / 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 (Flux)
MPL 10x10x4 / N38
| Parameter | Value | SI Unit / Description |
|---|---|---|
| Magnetic Flux | 3 760 Mx | 37.6 µWb |
| Pc Coefficient | 0.46 | Low (Flat) |
Table 11: Physics of underwater searching
MPL 10x10x4 / N38
| Environment | Effective steel pull | Effect |
|---|---|---|
| Air (land) | 3.10 kg | Standard |
| Water (riverbed) |
3.55 kg
(+0.45 kg buoyancy gain)
|
+14.5% |
1. Vertical hold
*Note: On a vertical wall, the magnet holds just approx. 20-30% of its max power.
2. Plate thickness effect
*Thin steel (e.g. 0.5mm PC case) significantly weakens the holding force.
3. Temperature resistance
*For N38 grade, the critical limit is 80°C.
4. Demagnetization curve and operating point (B-H)
chart generated for the permeance coefficient Pc (Permeance Coefficient) = 0.46
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% |
Sustainability
| recyclability (EoL) | 100% |
| recycled raw materials | ~10% (pre-cons) |
| carbon footprint | low / zredukowany |
| waste code (EWC) | 16 02 16 |
Other proposals
Advantages and disadvantages of rare earth magnets.
Benefits
- They do not lose strength, even after around 10 years – the drop in power is only ~1% (theoretically),
- They maintain their magnetic properties even under close interference source,
- The use of an refined layer of noble metals (nickel, gold, silver) causes the element to look better,
- Magnetic induction on the working layer of the magnet turns out to be very high,
- 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...
- Possibility of accurate creating as well as adapting to specific conditions,
- Versatile presence in advanced technology sectors – they are utilized in computer drives, drive modules, advanced medical instruments, as well as modern systems.
- Thanks to their power density, small magnets offer high operating force, with minimal size,
Limitations
- To avoid cracks under impact, we recommend using special steel holders. Such a solution secures the magnet and simultaneously increases its durability.
- When exposed to high temperature, neodymium magnets suffer a drop in power. 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 advise using waterproof magnets made of rubber, plastic or other material stable to moisture, in case of application outdoors
- Due to limitations in producing nuts and complex shapes in magnets, we propose using cover - magnetic mount.
- Health risk to health – tiny shards of magnets are risky, if swallowed, which is particularly important in the context of child health protection. It is also worth noting that small elements of these devices can disrupt the diagnostic process medical in case of swallowing.
- Due to expensive raw materials, their price exceeds standard values,
Holding force characteristics
Breakaway strength of the magnet in ideal conditions – what it depends on?
- with the contact of a yoke made of low-carbon steel, ensuring maximum field concentration
- with a thickness of at least 10 mm
- characterized by even structure
- with direct contact (no impurities)
- during pulling in a direction vertical to the plane
- at ambient temperature approx. 20 degrees Celsius
Practical lifting capacity: influencing factors
- Clearance – the presence of any layer (paint, tape, gap) interrupts the magnetic circuit, which lowers power steeply (even by 50% at 0.5 mm).
- Force direction – note that the magnet has greatest strength perpendicularly. Under shear forces, the capacity drops drastically, often to levels of 20-30% of the nominal value.
- Element thickness – to utilize 100% power, the steel must be adequately massive. Paper-thin metal limits the lifting capacity (the magnet "punches through" it).
- Metal type – different alloys attracts identically. High carbon content worsen the interaction with the magnet.
- Surface finish – ideal contact is obtained only on smooth steel. Rough texture create air cushions, weakening the magnet.
- Thermal factor – hot environment weakens pulling force. Too high temperature can permanently damage the magnet.
Lifting capacity was measured with the use of a smooth steel plate of optimal thickness (min. 20 mm), under perpendicular detachment force, however under parallel forces the lifting capacity is smaller. In addition, even a slight gap between the magnet and the plate reduces the load capacity.
Precautions when working with neodymium magnets
Permanent damage
Regular neodymium magnets (N-type) undergo demagnetization when the temperature surpasses 80°C. This process is irreversible.
Fire warning
Powder created during machining of magnets is flammable. Do not drill into magnets unless you are an expert.
Medical implants
Warning for patients: Powerful magnets disrupt medical devices. Keep minimum 30 cm distance or ask another person to handle the magnets.
No play value
NdFeB magnets are not suitable for play. Swallowing multiple magnets can lead to them connecting inside the digestive tract, which poses a direct threat to life and necessitates urgent medical intervention.
Impact on smartphones
Note: rare earth magnets generate a field that confuses precision electronics. Keep a separation from your phone, device, and GPS.
Electronic hazard
Very strong magnetic fields can destroy records on credit cards, hard drives, and storage devices. Keep a distance of min. 10 cm.
Powerful field
Handle with care. Rare earth magnets attract from a long distance and snap with massive power, often faster than you can move away.
Nickel coating and allergies
A percentage of the population suffer from a sensitization to nickel, which is the standard coating for neodymium magnets. Extended handling might lead to an allergic reaction. We recommend use safety gloves.
Bone fractures
Big blocks can smash fingers in a fraction of a second. Never place your hand between two attracting surfaces.
Magnets are brittle
Despite metallic appearance, the material is delicate and not impact-resistant. Avoid impacts, as the magnet may crumble into sharp, dangerous pieces.
