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
Load capacity
35.61 kg / 349.34 N
Magnetic Induction
329.64 mT / 3296 Gs
Coating
[NiCuNi] Nickel
68.27 ZŁ with VAT / pcs + price for transport
55.50 ZŁ net + 23% VAT / pcs
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Detailed specification - 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 | 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 modeling of the assembly - data
Presented values represent the outcome of a mathematical simulation. Values are based on algorithms for the material Nd2Fe14B. Actual parameters might slightly differ from theoretical values. Please consider these data as a supplementary guide when designing systems.
Table 1: Static pull force (pull 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 pounds
35610.0 g / 349.3 N
|
dangerous! |
| 1 mm |
3087 Gs
308.7 mT
|
31.25 kg / 68.89 pounds
31248.2 g / 306.5 N
|
dangerous! |
| 2 mm |
2866 Gs
286.6 mT
|
26.93 kg / 59.37 pounds
26929.3 g / 264.2 N
|
dangerous! |
| 3 mm |
2643 Gs
264.3 mT
|
22.90 kg / 50.48 pounds
22895.5 g / 224.6 N
|
dangerous! |
| 5 mm |
2216 Gs
221.6 mT
|
16.10 kg / 35.50 pounds
16103.3 g / 158.0 N
|
dangerous! |
| 10 mm |
1397 Gs
139.7 mT
|
6.40 kg / 14.11 pounds
6402.3 g / 62.8 N
|
warning |
| 15 mm |
907 Gs
90.7 mT
|
2.70 kg / 5.95 pounds
2697.7 g / 26.5 N
|
warning |
| 20 mm |
615 Gs
61.5 mT
|
1.24 kg / 2.73 pounds
1239.2 g / 12.2 N
|
weak grip |
| 30 mm |
314 Gs
31.4 mT
|
0.32 kg / 0.71 pounds
322.6 g / 3.2 N
|
weak grip |
| 50 mm |
108 Gs
10.8 mT
|
0.04 kg / 0.09 pounds
38.6 g / 0.4 N
|
weak grip |
Table 2: Vertical hold (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 pounds
7122.0 g / 69.9 N
|
| 1 mm | Stal (~0.2) |
6.25 kg / 13.78 pounds
6250.0 g / 61.3 N
|
| 2 mm | Stal (~0.2) |
5.39 kg / 11.87 pounds
5386.0 g / 52.8 N
|
| 3 mm | Stal (~0.2) |
4.58 kg / 10.10 pounds
4580.0 g / 44.9 N
|
| 5 mm | Stal (~0.2) |
3.22 kg / 7.10 pounds
3220.0 g / 31.6 N
|
| 10 mm | Stal (~0.2) |
1.28 kg / 2.82 pounds
1280.0 g / 12.6 N
|
| 15 mm | Stal (~0.2) |
0.54 kg / 1.19 pounds
540.0 g / 5.3 N
|
| 20 mm | Stal (~0.2) |
0.25 kg / 0.55 pounds
248.0 g / 2.4 N
|
| 30 mm | Stal (~0.2) |
0.06 kg / 0.14 pounds
64.0 g / 0.6 N
|
| 50 mm | Stal (~0.2) |
0.01 kg / 0.02 pounds
8.0 g / 0.1 N
|
Table 3: Vertical assembly (sliding) - 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 pounds
10683.0 g / 104.8 N
|
| Painted steel (standard) |
µ = 0.2
20% Nominalnej Siły
|
7.12 kg / 15.70 pounds
7122.0 g / 69.9 N
|
| Oily/slippery steel |
µ = 0.1
10% Nominalnej Siły
|
3.56 kg / 7.85 pounds
3561.0 g / 34.9 N
|
| Magnet with anti-slip rubber |
µ = 0.5
50% Nominalnej Siły
|
17.81 kg / 39.25 pounds
17805.0 g / 174.7 N
|
Table 4: Steel thickness (substrate influence) - sheet metal selection
MPL 60x20x10 / N38
| Steel thickness (mm) | % power | Real pull force (kg/lbs/g/N) |
|---|---|---|
| 0.5 mm |
|
1.78 kg / 3.93 pounds
1780.5 g / 17.5 N
|
| 1 mm |
|
4.45 kg / 9.81 pounds
4451.3 g / 43.7 N
|
| 2 mm |
|
8.90 kg / 19.63 pounds
8902.5 g / 87.3 N
|
| 3 mm |
|
13.35 kg / 29.44 pounds
13353.8 g / 131.0 N
|
| 5 mm |
|
22.26 kg / 49.07 pounds
22256.3 g / 218.3 N
|
| 10 mm |
|
35.61 kg / 78.51 pounds
35610.0 g / 349.3 N
|
| 11 mm |
|
35.61 kg / 78.51 pounds
35610.0 g / 349.3 N
|
| 12 mm |
|
35.61 kg / 78.51 pounds
35610.0 g / 349.3 N
|
Table 5: Working in heat (material behavior) - thermal limit
MPL 60x20x10 / N38
| Ambient temp. (°C) | Power loss | Remaining pull (kg/lbs/g/N) | Status |
|---|---|---|---|
| 20 °C | 0.0% |
35.61 kg / 78.51 pounds
35610.0 g / 349.3 N
|
OK |
| 40 °C | -2.2% |
34.83 kg / 76.78 pounds
34826.6 g / 341.6 N
|
OK |
| 60 °C | -4.4% |
34.04 kg / 75.05 pounds
34043.2 g / 334.0 N
|
|
| 80 °C | -6.6% |
33.26 kg / 73.33 pounds
33259.7 g / 326.3 N
|
|
| 100 °C | -28.8% |
25.35 kg / 55.90 pounds
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) | Sliding Force (kg/lbs/g/N) | Repulsion (kg/lbs) (N-N) |
|---|---|---|---|
| 0 mm |
80.35 kg / 177.15 pounds
4 692 Gs
|
12.05 kg / 26.57 pounds
12053 g / 118.2 N
|
N/A |
| 1 mm |
75.49 kg / 166.43 pounds
6 389 Gs
|
11.32 kg / 24.96 pounds
11324 g / 111.1 N
|
67.94 kg / 149.79 pounds
~0 Gs
|
| 2 mm |
70.51 kg / 155.45 pounds
6 174 Gs
|
10.58 kg / 23.32 pounds
10577 g / 103.8 N
|
63.46 kg / 139.90 pounds
~0 Gs
|
| 3 mm |
65.58 kg / 144.58 pounds
5 955 Gs
|
9.84 kg / 21.69 pounds
9837 g / 96.5 N
|
59.02 kg / 130.12 pounds
~0 Gs
|
| 5 mm |
56.11 kg / 123.71 pounds
5 508 Gs
|
8.42 kg / 18.56 pounds
8417 g / 82.6 N
|
50.50 kg / 111.34 pounds
~0 Gs
|
| 10 mm |
36.34 kg / 80.11 pounds
4 432 Gs
|
5.45 kg / 12.02 pounds
5450 g / 53.5 N
|
32.70 kg / 72.10 pounds
~0 Gs
|
| 20 mm |
14.45 kg / 31.85 pounds
2 795 Gs
|
2.17 kg / 4.78 pounds
2167 g / 21.3 N
|
13.00 kg / 28.66 pounds
~0 Gs
|
| 50 mm |
1.38 kg / 3.05 pounds
865 Gs
|
0.21 kg / 0.46 pounds
208 g / 2.0 N
|
1.25 kg / 2.75 pounds
~0 Gs
|
| 60 mm |
0.73 kg / 1.60 pounds
627 Gs
|
0.11 kg / 0.24 pounds
109 g / 1.1 N
|
0.66 kg / 1.44 pounds
~0 Gs
|
| 70 mm |
0.40 kg / 0.89 pounds
467 Gs
|
0.06 kg / 0.13 pounds
60 g / 0.6 N
|
0.36 kg / 0.80 pounds
~0 Gs
|
| 80 mm |
0.23 kg / 0.51 pounds
355 Gs
|
0.03 kg / 0.08 pounds
35 g / 0.3 N
|
0.21 kg / 0.46 pounds
~0 Gs
|
| 90 mm |
0.14 kg / 0.31 pounds
275 Gs
|
0.02 kg / 0.05 pounds
21 g / 0.2 N
|
0.13 kg / 0.28 pounds
~0 Gs
|
| 100 mm |
0.09 kg / 0.19 pounds
217 Gs
|
0.01 kg / 0.03 pounds
13 g / 0.1 N
|
0.08 kg / 0.17 pounds
~0 Gs
|
Table 7: Protective zones (electronics) - 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 |
| Mechanical watch | 20 Gs (2.0 mT) | 10.0 cm |
| Mobile device | 40 Gs (4.0 mT) | 8.0 cm |
| Remote | 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: Dynamics (kinetic energy) - warning
MPL 60x20x10 / N38
| Start from (mm) | Speed (km/h) | Energy (J) | Predicted outcome |
|---|---|---|---|
| 10 mm |
22.20 km/h
(6.17 m/s)
|
1.71 J | |
| 30 mm |
34.94 km/h
(9.71 m/s)
|
4.24 J | |
| 50 mm |
44.89 km/h
(12.47 m/s)
|
7.00 J | |
| 100 mm |
63.44 km/h
(17.62 m/s)
|
13.97 J |
Table 9: Coating parameters (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 (Pc)
MPL 60x20x10 / N38
| Parameter | Value | SI Unit / Description |
|---|---|---|
| Magnetic Flux | 37 480 Mx | 374.8 µWb |
| Pc Coefficient | 0.35 | Low (Flat) |
Table 11: Underwater work (magnet fishing)
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. Shear force
*Warning: On a vertical surface, the magnet holds just ~20% of its nominal pull.
2. Steel saturation
*Thin steel (e.g. 0.5mm PC case) significantly limits the holding force.
3. Thermal stability
*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) = 0.35
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% |
Environmental data
| recyclability (EoL) | 100% |
| recycled raw materials | ~10% (pre-cons) |
| carbon footprint | low / zredukowany |
| waste code (EWC) | 16 02 16 |
Check out more proposals
Strengths as well as weaknesses of neodymium magnets.
Pros
- Their strength is durable, and after around 10 years it decreases only by ~1% (according to research),
- They have excellent resistance to magnetism drop when exposed to opposing magnetic fields,
- In other words, due to the glossy layer of silver, the element looks attractive,
- Magnetic induction on the top side of the magnet turns out to be impressive,
- Through (appropriate) combination of ingredients, they can achieve high thermal strength, enabling functioning at temperatures reaching 230°C and above...
- Possibility of precise modeling and modifying to individual conditions,
- Universal use in modern industrial fields – they serve a role in HDD drives, drive modules, medical equipment, also industrial machines.
- Relatively small size with high pulling force – neodymium magnets offer strong magnetic field in tiny dimensions, which makes them useful in compact constructions
Weaknesses
- Susceptibility to cracking is one of their disadvantages. Upon strong impact they can break. 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 suffer a drop in force. Often, when the temperature exceeds 80°C, their power 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
- They oxidize in a humid environment. For use outdoors we recommend using waterproof magnets e.g. in rubber, plastic
- We suggest cover - magnetic mount, due to difficulties in producing threads inside the magnet and complex forms.
- Health risk related to microscopic parts of magnets are risky, in case of ingestion, which is particularly important in the aspect of protecting the youngest. Additionally, small elements of these products are able to complicate diagnosis medical in case of swallowing.
- Due to complex production process, their price is higher than average,
Holding force characteristics
Magnetic strength at its maximum – what affects it?
- on a block made of mild steel, perfectly concentrating the magnetic field
- whose thickness equals approx. 10 mm
- with an polished touching surface
- without the slightest insulating layer between the magnet and steel
- during pulling in a direction perpendicular to the plane
- in neutral thermal conditions
Magnet lifting force in use – key factors
- Space between magnet and steel – every millimeter of distance (caused e.g. by varnish or unevenness) diminishes the pulling force, often by half at just 0.5 mm.
- Force direction – declared lifting capacity refers to pulling vertically. When applying parallel force, the magnet holds significantly lower power (often approx. 20-30% of maximum force).
- Metal thickness – the thinner the sheet, the weaker the hold. Part of the magnetic field passes through the material instead of generating force.
- Plate material – low-carbon steel gives the best results. Higher carbon content lower magnetic properties and lifting capacity.
- Base smoothness – the smoother and more polished the plate, the larger the contact zone and higher the lifting capacity. Unevenness creates an air distance.
- Thermal conditions – neodymium magnets have a sensitivity to temperature. When it is hot they are weaker, and at low temperatures gain strength (up to a certain limit).
Holding force was checked on a smooth steel plate of 20 mm thickness, when a perpendicular force was applied, whereas under shearing force the lifting capacity is smaller. Additionally, even a slight gap between the magnet’s surface and the plate decreases the holding force.
Warnings
Beware of splinters
Despite the nickel coating, the material is delicate and cannot withstand shocks. Do not hit, as the magnet may shatter into hazardous fragments.
Respect the power
Exercise caution. Rare earth magnets attract from a distance and snap with massive power, often quicker than you can move away.
Keep away from children
Neodymium magnets are not toys. Eating several magnets may result in them attracting across intestines, which poses a critical condition and requires immediate surgery.
Data carriers
Avoid bringing magnets near a purse, laptop, or TV. The magnetism can permanently damage these devices and erase data from cards.
Power loss in heat
Do not overheat. NdFeB magnets are susceptible to heat. If you need resistance above 80°C, inquire about HT versions (H, SH, UH).
Physical harm
Large magnets can smash fingers instantly. Never put your hand betwixt two attracting surfaces.
Threat to navigation
Note: neodymium magnets produce a field that disrupts precision electronics. Keep a separation from your mobile, tablet, and GPS.
Allergic reactions
Nickel alert: The nickel-copper-nickel coating consists of nickel. If an allergic reaction appears, cease handling magnets and wear gloves.
Fire risk
Combustion risk: Neodymium dust is explosive. Do not process magnets without safety gear as this risks ignition.
Danger to pacemakers
Life threat: Strong magnets can turn off pacemakers and defibrillators. Stay away if you have electronic implants.
