MPL 60x20x10 / N38 - lamellar magnet
lamellar magnet
Catalog no 020174
GTIN/EAN: 5906301811800
- length
- 60 mm [±0,1 mm]
- Width
- 20 mm [±0,1 mm]
- Height
- 10 mm [±0,1 mm]
- Weight
- 90 g
- Magnetization Direction
- ↑ axial
- Coating
- [NiCuNi] Nickel
How we measure these parameters — certificates and measurements
55.50 zł net / pcs
68.27 zł with VAT (23% VAT) / pcs
bulk discounts:
Need more?Frequently asked questions
How much will a block magnet really hold?
What is the maximum working temperature?
What safety factor should I allow?
Engineering report for this magnet
Full PDF analysis: pull and shear force, effect of distance, temperature and plate thickness, safety distances and the demagnetization curve.
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Product card - MPL 60x20x10 / N38 - lamellar magnet
Specification / characteristics - MPL 60x20x10 / N38 - lamellar magnet
| properties | values |
|---|---|
| Cat. no. | 020174 |
| GTIN/EAN | 5906301811800 |
| Production/Distribution | Dhit sp. z o.o. |
| Country of origin | Poland / China / Germany |
| Customs code | 85059029 |
| length | 60 mm [±0,1 mm] |
| Width | 20 mm [±0,1 mm] |
| Height | 10 mm [±0,1 mm] |
| Weight | 90 g |
| Magnetization Direction | ↑ axial |
| Load capacity ~ ? | 35.61 kg / 349.34 N |
| Magnetic Induction ~ ? | 329.64 mT / 3296 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 | 310 | °C |
| Curie Temperature TF | 590 | °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 modeling of the assembly - report
The following values represent the outcome of a mathematical analysis. Values rely on algorithms for the class Nd2Fe14B. Actual conditions may deviate from the simulation results. Use these calculations as a supplementary guide when designing systems.
Table 1: Static pull force (force vs distance) - interaction chart
MPL 60x20x10 / N38
| Distance (mm) | Induction (Gauss) / mT | Pull Force (kg/lbs/g/N) | Risk Status |
|---|---|---|---|
| 0 mm |
3296 Gs
329.6 mT
|
35.61 kg / 78.51 lbs
35610.0 g / 349.3 N
|
crushing |
| 1 mm |
3087 Gs
308.7 mT
|
31.25 kg / 68.89 lbs
31248.2 g / 306.5 N
|
crushing |
| 2 mm |
2866 Gs
286.6 mT
|
26.93 kg / 59.37 lbs
26929.3 g / 264.2 N
|
crushing |
| 3 mm |
2643 Gs
264.3 mT
|
22.90 kg / 50.48 lbs
22895.5 g / 224.6 N
|
crushing |
| 5 mm |
2216 Gs
221.6 mT
|
16.10 kg / 35.50 lbs
16103.3 g / 158.0 N
|
crushing |
| 10 mm |
1397 Gs
139.7 mT
|
6.40 kg / 14.11 lbs
6402.3 g / 62.8 N
|
strong |
| 15 mm |
907 Gs
90.7 mT
|
2.70 kg / 5.95 lbs
2697.7 g / 26.5 N
|
strong |
| 20 mm |
615 Gs
61.5 mT
|
1.24 kg / 2.73 lbs
1239.2 g / 12.2 N
|
low risk |
| 30 mm |
314 Gs
31.4 mT
|
0.32 kg / 0.71 lbs
322.6 g / 3.2 N
|
low risk |
| 50 mm |
108 Gs
10.8 mT
|
0.04 kg / 0.09 lbs
38.6 g / 0.4 N
|
low risk |
Table 2: Shear load (vertical surface)
MPL 60x20x10 / N38
| Distance (mm) | Friction coefficient | Pull Force (kg/lbs/g/N) |
|---|---|---|
| 0 mm | Stal (~0.2) |
7.12 kg / 15.70 lbs
7122.0 g / 69.9 N
|
| 1 mm | Stal (~0.2) |
6.25 kg / 13.78 lbs
6250.0 g / 61.3 N
|
| 2 mm | Stal (~0.2) |
5.39 kg / 11.87 lbs
5386.0 g / 52.8 N
|
| 3 mm | Stal (~0.2) |
4.58 kg / 10.10 lbs
4580.0 g / 44.9 N
|
| 5 mm | Stal (~0.2) |
3.22 kg / 7.10 lbs
3220.0 g / 31.6 N
|
| 10 mm | Stal (~0.2) |
1.28 kg / 2.82 lbs
1280.0 g / 12.6 N
|
| 15 mm | Stal (~0.2) |
0.54 kg / 1.19 lbs
540.0 g / 5.3 N
|
| 20 mm | Stal (~0.2) |
0.25 kg / 0.55 lbs
248.0 g / 2.4 N
|
| 30 mm | Stal (~0.2) |
0.06 kg / 0.14 lbs
64.0 g / 0.6 N
|
| 50 mm | Stal (~0.2) |
0.01 kg / 0.02 lbs
8.0 g / 0.1 N
|
Table 3: Wall mounting (shearing) - vertical pull
MPL 60x20x10 / N38
| Surface type | Friction coefficient / % Mocy | Max load (kg/lbs/g/N) |
|---|---|---|
| Raw steel |
µ = 0.3
30% Nominalnej Siły
|
10.68 kg / 23.55 lbs
10683.0 g / 104.8 N
|
| Painted steel (standard) |
µ = 0.2
20% Nominalnej Siły
|
7.12 kg / 15.70 lbs
7122.0 g / 69.9 N
|
| Oily/slippery steel |
µ = 0.1
10% Nominalnej Siły
|
3.56 kg / 7.85 lbs
3561.0 g / 34.9 N
|
| Magnet with anti-slip rubber |
µ = 0.5
50% Nominalnej Siły
|
17.81 kg / 39.25 lbs
17805.0 g / 174.7 N
|
Table 4: Material efficiency (substrate influence) - power losses
MPL 60x20x10 / N38
| Steel thickness (mm) | % power | Real pull force (kg/lbs/g/N) |
|---|---|---|
| 0.5 mm |
|
1.78 kg / 3.93 lbs
1780.5 g / 17.5 N
|
| 1 mm |
|
4.45 kg / 9.81 lbs
4451.3 g / 43.7 N
|
| 2 mm |
|
8.90 kg / 19.63 lbs
8902.5 g / 87.3 N
|
| 3 mm |
|
13.35 kg / 29.44 lbs
13353.8 g / 131.0 N
|
| 5 mm |
|
22.26 kg / 49.07 lbs
22256.3 g / 218.3 N
|
| 10 mm |
|
35.61 kg / 78.51 lbs
35610.0 g / 349.3 N
|
| 11 mm |
|
35.61 kg / 78.51 lbs
35610.0 g / 349.3 N
|
| 12 mm |
|
35.61 kg / 78.51 lbs
35610.0 g / 349.3 N
|
Table 5: Working in heat (stability) - power drop
MPL 60x20x10 / N38
| Ambient temp. (°C) | Power loss | Remaining pull (kg/lbs/g/N) | Status |
|---|---|---|---|
| 20 °C | 0.0% |
35.61 kg / 78.51 lbs
35610.0 g / 349.3 N
|
OK |
| 40 °C | -2.2% |
34.83 kg / 76.78 lbs
34826.6 g / 341.6 N
|
OK |
| 60 °C | -4.4% |
34.04 kg / 75.05 lbs
34043.2 g / 334.0 N
|
|
| 80 °C | -6.6% |
33.26 kg / 73.33 lbs
33259.7 g / 326.3 N
|
|
| 100 °C | -28.8% |
25.35 kg / 55.90 lbs
25354.3 g / 248.7 N
|
Table 6: Magnet-Magnet interaction (repulsion) - forces in the system
MPL 60x20x10 / N38
| Gap (mm) | Attraction (kg/lbs) (N-S) | Shear Strength (kg/lbs/g/N) | Repulsion (kg/lbs) (N-N) |
|---|---|---|---|
| 0 mm |
80.35 kg / 177.15 lbs
4 692 Gs
|
12.05 kg / 26.57 lbs
12053 g / 118.2 N
|
N/A |
| 1 mm |
75.49 kg / 166.43 lbs
6 389 Gs
|
11.32 kg / 24.96 lbs
11324 g / 111.1 N
|
67.94 kg / 149.79 lbs
~0 Gs
|
| 2 mm |
70.51 kg / 155.45 lbs
6 174 Gs
|
10.58 kg / 23.32 lbs
10577 g / 103.8 N
|
63.46 kg / 139.90 lbs
~0 Gs
|
| 3 mm |
65.58 kg / 144.58 lbs
5 955 Gs
|
9.84 kg / 21.69 lbs
9837 g / 96.5 N
|
59.02 kg / 130.12 lbs
~0 Gs
|
| 5 mm |
56.11 kg / 123.71 lbs
5 508 Gs
|
8.42 kg / 18.56 lbs
8417 g / 82.6 N
|
50.50 kg / 111.34 lbs
~0 Gs
|
| 10 mm |
36.34 kg / 80.11 lbs
4 432 Gs
|
5.45 kg / 12.02 lbs
5450 g / 53.5 N
|
32.70 kg / 72.10 lbs
~0 Gs
|
| 20 mm |
14.45 kg / 31.85 lbs
2 795 Gs
|
2.17 kg / 4.78 lbs
2167 g / 21.3 N
|
13.00 kg / 28.66 lbs
~0 Gs
|
| 50 mm |
1.38 kg / 3.05 lbs
865 Gs
|
0.21 kg / 0.46 lbs
208 g / 2.0 N
|
1.25 kg / 2.75 lbs
~0 Gs
|
| 60 mm |
0.73 kg / 1.60 lbs
627 Gs
|
0.11 kg / 0.24 lbs
109 g / 1.1 N
|
0.66 kg / 1.44 lbs
~0 Gs
|
| 70 mm |
0.40 kg / 0.89 lbs
467 Gs
|
0.06 kg / 0.13 lbs
60 g / 0.6 N
|
0.36 kg / 0.80 lbs
~0 Gs
|
| 80 mm |
0.23 kg / 0.51 lbs
355 Gs
|
0.03 kg / 0.08 lbs
35 g / 0.3 N
|
0.21 kg / 0.46 lbs
~0 Gs
|
| 90 mm |
0.14 kg / 0.31 lbs
275 Gs
|
0.02 kg / 0.05 lbs
21 g / 0.2 N
|
0.13 kg / 0.28 lbs
~0 Gs
|
| 100 mm |
0.09 kg / 0.19 lbs
217 Gs
|
0.01 kg / 0.03 lbs
13 g / 0.1 N
|
0.08 kg / 0.17 lbs
~0 Gs
|
Table 7: Protective zones (implants) - precautionary measures
MPL 60x20x10 / N38
| Object / Device | Limit (Gauss) / mT | Safe distance |
|---|---|---|
| Pacemaker | 5 Gs (0.5 mT) | 16.5 cm |
| Hearing aid | 10 Gs (1.0 mT) | 13.0 cm |
| Timepiece | 20 Gs (2.0 mT) | 10.0 cm |
| Phone / Smartphone | 40 Gs (4.0 mT) | 8.0 cm |
| Car key | 50 Gs (5.0 mT) | 7.0 cm |
| Payment card | 400 Gs (40.0 mT) | 3.0 cm |
| HDD hard drive | 600 Gs (60.0 mT) | 2.5 cm |
Table 8: Impact energy (kinetic energy) - warning
MPL 60x20x10 / N38
| Start from (mm) | Speed (km/h) | Energy (J) | Predicted outcome |
|---|---|---|---|
| 10 mm |
22.47 km/h
(6.24 m/s)
|
1.75 J | |
| 30 mm |
24.71 km/h
(6.86 m/s)
|
2.12 J | |
| 50 mm |
24.85 km/h
(6.90 m/s)
|
2.14 J | |
| 100 mm |
24.88 km/h
(6.91 m/s)
|
2.15 J |
Table 9: Anti-corrosion coating durability
MPL 60x20x10 / 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)
MPL 60x20x10 / N38
| Parameter | Value | SI Unit / Description |
|---|---|---|
| Magnetic Flux | 37 480 Mx | 374.8 µWb |
| Pc Coefficient | 0.35 | Low (Flat) |
Table 11: Physics of underwater searching
MPL 60x20x10 / N38
| Environment | Effective steel pull | Effect |
|---|---|---|
| Air (land) | 35.61 kg | Standard |
| Water (riverbed) |
40.77 kg
(+5.16 kg buoyancy gain)
|
+14.5% |
1. Vertical hold
*Note: On a vertical surface, the magnet retains only ~20% of its max power.
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 safety limit is 80°C.
4. Demagnetization curve and operating point (B-H)
chart generated for the permeance coefficient Pc (Permeance Coefficient) = 0.35
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.
Elemental analysis
| 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
Pros and cons of neodymium magnets.
Advantages
- They have constant strength, and over around ten years their attraction force decreases symbolically – ~1% (in testing),
- Magnets effectively defend themselves against demagnetization caused by ambient magnetic noise,
- A magnet with a shiny silver surface is more attractive,
- Magnetic induction on the working layer of the magnet turns out to be exceptional,
- Neodymium magnets are characterized by very 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...
- Considering the possibility of accurate shaping and adaptation to individualized projects, magnetic components can be modeled in a variety of shapes and sizes, which expands the range of possible applications,
- Significant place in electronics industry – they serve a role in computer drives, electric motors, precision medical tools, and modern systems.
- Thanks to concentrated force, small magnets offer high operating force, in miniature format,
Weaknesses
- At very strong impacts they can crack, therefore we recommend placing them in steel cases. A metal housing provides additional protection against damage, as well as increases the magnet's durability.
- Neodymium magnets decrease their force under the influence of heating. As soon as 80°C is exceeded, many of them start losing their force. Therefore, we recommend our special magnets marked [AH], which maintain stability even at temperatures up to 230°C
- Due to the susceptibility of magnets to corrosion in a humid environment, we recommend using waterproof magnets made of rubber, plastic or other material immune to moisture, in case of application outdoors
- We recommend a housing - magnetic mechanism, due to difficulties in realizing nuts inside the magnet and complex forms.
- Possible danger related to microscopic parts of magnets are risky, if swallowed, which is particularly important in the context of child health protection. It is also worth noting that tiny parts of these devices can be problematic in diagnostics medical in case of swallowing.
- Higher cost of purchase is one of the disadvantages compared to ceramic magnets, especially in budget applications
Pull force analysis
Maximum lifting force for a neodymium magnet – what it depends on?
- using a sheet made of mild steel, acting as a ideal flux conductor
- whose transverse dimension equals approx. 10 mm
- characterized by even structure
- without any clearance between the magnet and steel
- under perpendicular force direction (90-degree angle)
- at conditions approx. 20°C
Lifting capacity in real conditions – factors
- Clearance – existence of any layer (rust, dirt, gap) interrupts the magnetic circuit, which lowers power rapidly (even by 50% at 0.5 mm).
- Force direction – declared lifting capacity refers to pulling vertically. When applying parallel force, the magnet exhibits significantly lower power (typically approx. 20-30% of nominal force).
- Element thickness – to utilize 100% power, the steel must be adequately massive. Thin sheet limits the attraction force (the magnet "punches through" it).
- Metal type – not every steel reacts the same. High carbon content weaken the interaction with the magnet.
- Surface finish – full contact is possible only on smooth steel. Rough texture reduce the real contact area, reducing force.
- Operating temperature – neodymium magnets have a sensitivity to temperature. At higher temperatures they lose power, and in frost they can be stronger (up to a certain limit).
Lifting capacity testing was conducted on plates with a smooth surface of suitable thickness, under a perpendicular pulling force, whereas under shearing force the holding force is lower. Moreover, even a minimal clearance between the magnet and the plate reduces the load capacity.
Safe handling of NdFeB magnets
Medical interference
For implant holders: Strong magnetic fields affect medical devices. Maintain minimum 30 cm distance or ask another person to handle the magnets.
Conscious usage
Before starting, read the rules. Sudden snapping can break the magnet or injure your hand. Think ahead.
Risk of cracking
Beware of splinters. Magnets can explode upon uncontrolled impact, ejecting shards into the air. We recommend safety glasses.
Sensitization to coating
Certain individuals experience a sensitization to nickel, which is the standard coating for NdFeB magnets. Frequent touching may cause a rash. We recommend wear protective gloves.
Bodily injuries
Big blocks can break fingers in a fraction of a second. Never put your hand between two strong magnets.
Compass and GPS
A strong magnetic field negatively affects the operation of magnetometers in smartphones and navigation systems. Maintain magnets near a device to prevent breaking the sensors.
Mechanical processing
Dust generated during grinding of magnets is flammable. Avoid drilling into magnets without proper cooling and knowledge.
Danger to the youngest
Strictly store magnets out of reach of children. Risk of swallowing is significant, and the effects of magnets connecting inside the body are life-threatening.
Demagnetization risk
Watch the temperature. Heating the magnet above 80 degrees Celsius will destroy its properties and strength.
Threat to electronics
Avoid bringing magnets close to a wallet, laptop, or screen. The magnetic field can permanently damage these devices and erase data from cards.
