MPL 60x10x5 / N38 - lamellar magnet
lamellar magnet
Catalog no 020474
GTIN/EAN: 5906301811947
length
60 mm [±0,1 mm]
Width
10 mm [±0,1 mm]
Height
5 mm [±0,1 mm]
Weight
22.5 g
Magnetization Direction
↑ axial
Load capacity
18.16 kg / 178.10 N
Magnetic Induction
315.09 mT / 3151 Gs
Coating
[NiCuNi] Nickel
19.00 ZŁ with VAT / pcs + price for transport
15.45 ZŁ net + 23% VAT / pcs
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Technical - MPL 60x10x5 / N38 - lamellar magnet
Specification / characteristics - MPL 60x10x5 / N38 - lamellar magnet
| properties | values |
|---|---|
| Cat. no. | 020474 |
| GTIN/EAN | 5906301811947 |
| Production/Distribution | Dhit sp. z o.o. |
| Country of origin | Poland / China / Germany |
| Customs code | 85059029 |
| length | 60 mm [±0,1 mm] |
| Width | 10 mm [±0,1 mm] |
| Height | 5 mm [±0,1 mm] |
| Weight | 22.5 g |
| Magnetization Direction | ↑ axial |
| Load capacity ~ ? | 18.16 kg / 178.10 N |
| Magnetic Induction ~ ? | 315.09 mT / 3151 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 analysis of the assembly - data
These information represent the direct effect of a engineering calculation. Results were calculated on models for the class Nd2Fe14B. Real-world performance might slightly differ from theoretical values. Use these data as a reference point for designers.
Table 1: Static pull force (pull vs gap) - characteristics
MPL 60x10x5 / N38
| Distance (mm) | Induction (Gauss) / mT | Pull Force (kg/lbs/g/N) | Risk Status |
|---|---|---|---|
| 0 mm |
3149 Gs
314.9 mT
|
18.16 kg / 40.04 LBS
18160.0 g / 178.1 N
|
crushing |
| 1 mm |
2731 Gs
273.1 mT
|
13.66 kg / 30.11 LBS
13658.3 g / 134.0 N
|
crushing |
| 2 mm |
2302 Gs
230.2 mT
|
9.70 kg / 21.38 LBS
9698.4 g / 95.1 N
|
strong |
| 3 mm |
1912 Gs
191.2 mT
|
6.70 kg / 14.76 LBS
6696.5 g / 65.7 N
|
strong |
| 5 mm |
1317 Gs
131.7 mT
|
3.18 kg / 7.00 LBS
3176.9 g / 31.2 N
|
strong |
| 10 mm |
598 Gs
59.8 mT
|
0.65 kg / 1.44 LBS
653.8 g / 6.4 N
|
weak grip |
| 15 mm |
330 Gs
33.0 mT
|
0.20 kg / 0.44 LBS
199.2 g / 2.0 N
|
weak grip |
| 20 mm |
205 Gs
20.5 mT
|
0.08 kg / 0.17 LBS
77.0 g / 0.8 N
|
weak grip |
| 30 mm |
96 Gs
9.6 mT
|
0.02 kg / 0.04 LBS
16.9 g / 0.2 N
|
weak grip |
| 50 mm |
31 Gs
3.1 mT
|
0.00 kg / 0.00 LBS
1.8 g / 0.0 N
|
weak grip |
Table 2: Sliding hold (wall)
MPL 60x10x5 / N38
| Distance (mm) | Friction coefficient | Pull Force (kg/lbs/g/N) |
|---|---|---|
| 0 mm | Stal (~0.2) |
3.63 kg / 8.01 LBS
3632.0 g / 35.6 N
|
| 1 mm | Stal (~0.2) |
2.73 kg / 6.02 LBS
2732.0 g / 26.8 N
|
| 2 mm | Stal (~0.2) |
1.94 kg / 4.28 LBS
1940.0 g / 19.0 N
|
| 3 mm | Stal (~0.2) |
1.34 kg / 2.95 LBS
1340.0 g / 13.1 N
|
| 5 mm | Stal (~0.2) |
0.64 kg / 1.40 LBS
636.0 g / 6.2 N
|
| 10 mm | Stal (~0.2) |
0.13 kg / 0.29 LBS
130.0 g / 1.3 N
|
| 15 mm | Stal (~0.2) |
0.04 kg / 0.09 LBS
40.0 g / 0.4 N
|
| 20 mm | Stal (~0.2) |
0.02 kg / 0.04 LBS
16.0 g / 0.2 N
|
| 30 mm | Stal (~0.2) |
0.00 kg / 0.01 LBS
4.0 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 (sliding) - behavior on slippery surfaces
MPL 60x10x5 / N38
| Surface type | Friction coefficient / % Mocy | Max load (kg/lbs/g/N) |
|---|---|---|
| Raw steel |
µ = 0.3
30% Nominalnej Siły
|
5.45 kg / 12.01 LBS
5448.0 g / 53.4 N
|
| Painted steel (standard) |
µ = 0.2
20% Nominalnej Siły
|
3.63 kg / 8.01 LBS
3632.0 g / 35.6 N
|
| Oily/slippery steel |
µ = 0.1
10% Nominalnej Siły
|
1.82 kg / 4.00 LBS
1816.0 g / 17.8 N
|
| Magnet with anti-slip rubber |
µ = 0.5
50% Nominalnej Siły
|
9.08 kg / 20.02 LBS
9080.0 g / 89.1 N
|
Table 4: Material efficiency (substrate influence) - power losses
MPL 60x10x5 / N38
| Steel thickness (mm) | % power | Real pull force (kg/lbs/g/N) |
|---|---|---|
| 0.5 mm |
|
0.91 kg / 2.00 LBS
908.0 g / 8.9 N
|
| 1 mm |
|
2.27 kg / 5.00 LBS
2270.0 g / 22.3 N
|
| 2 mm |
|
4.54 kg / 10.01 LBS
4540.0 g / 44.5 N
|
| 3 mm |
|
6.81 kg / 15.01 LBS
6810.0 g / 66.8 N
|
| 5 mm |
|
11.35 kg / 25.02 LBS
11350.0 g / 111.3 N
|
| 10 mm |
|
18.16 kg / 40.04 LBS
18160.0 g / 178.1 N
|
| 11 mm |
|
18.16 kg / 40.04 LBS
18160.0 g / 178.1 N
|
| 12 mm |
|
18.16 kg / 40.04 LBS
18160.0 g / 178.1 N
|
Table 5: Working in heat (material behavior) - thermal limit
MPL 60x10x5 / N38
| Ambient temp. (°C) | Power loss | Remaining pull (kg/lbs/g/N) | Status |
|---|---|---|---|
| 20 °C | 0.0% |
18.16 kg / 40.04 LBS
18160.0 g / 178.1 N
|
OK |
| 40 °C | -2.2% |
17.76 kg / 39.16 LBS
17760.5 g / 174.2 N
|
OK |
| 60 °C | -4.4% |
17.36 kg / 38.27 LBS
17361.0 g / 170.3 N
|
|
| 80 °C | -6.6% |
16.96 kg / 37.39 LBS
16961.4 g / 166.4 N
|
|
| 100 °C | -28.8% |
12.93 kg / 28.51 LBS
12929.9 g / 126.8 N
|
Table 6: Two magnets (attraction) - field range
MPL 60x10x5 / N38
| Gap (mm) | Attraction (kg/lbs) (N-S) | Shear Force (kg/lbs/g/N) | Repulsion (kg/lbs) (N-N) |
|---|---|---|---|
| 0 mm |
36.69 kg / 80.89 LBS
4 464 Gs
|
5.50 kg / 12.13 LBS
5503 g / 54.0 N
|
N/A |
| 1 mm |
32.13 kg / 70.84 LBS
5 895 Gs
|
4.82 kg / 10.63 LBS
4820 g / 47.3 N
|
28.92 kg / 63.76 LBS
~0 Gs
|
| 2 mm |
27.59 kg / 60.83 LBS
5 463 Gs
|
4.14 kg / 9.13 LBS
4139 g / 40.6 N
|
24.83 kg / 54.75 LBS
~0 Gs
|
| 3 mm |
23.37 kg / 51.53 LBS
5 027 Gs
|
3.51 kg / 7.73 LBS
3506 g / 34.4 N
|
21.03 kg / 46.37 LBS
~0 Gs
|
| 5 mm |
16.31 kg / 35.97 LBS
4 200 Gs
|
2.45 kg / 5.39 LBS
2447 g / 24.0 N
|
14.68 kg / 32.37 LBS
~0 Gs
|
| 10 mm |
6.42 kg / 14.15 LBS
2 635 Gs
|
0.96 kg / 2.12 LBS
963 g / 9.4 N
|
5.78 kg / 12.74 LBS
~0 Gs
|
| 20 mm |
1.32 kg / 2.91 LBS
1 195 Gs
|
0.20 kg / 0.44 LBS
198 g / 1.9 N
|
1.19 kg / 2.62 LBS
~0 Gs
|
| 50 mm |
0.07 kg / 0.15 LBS
274 Gs
|
0.01 kg / 0.02 LBS
10 g / 0.1 N
|
0.06 kg / 0.14 LBS
~0 Gs
|
| 60 mm |
0.03 kg / 0.08 LBS
192 Gs
|
0.01 kg / 0.01 LBS
5 g / 0.1 N
|
0.03 kg / 0.07 LBS
~0 Gs
|
| 70 mm |
0.02 kg / 0.04 LBS
140 Gs
|
0.00 kg / 0.01 LBS
3 g / 0.0 N
|
0.02 kg / 0.04 LBS
~0 Gs
|
| 80 mm |
0.01 kg / 0.02 LBS
104 Gs
|
0.00 kg / 0.00 LBS
2 g / 0.0 N
|
0.01 kg / 0.02 LBS
~0 Gs
|
| 90 mm |
0.01 kg / 0.01 LBS
80 Gs
|
0.00 kg / 0.00 LBS
1 g / 0.0 N
|
0.00 kg / 0.00 LBS
~0 Gs
|
| 100 mm |
0.00 kg / 0.01 LBS
62 Gs
|
0.00 kg / 0.00 LBS
1 g / 0.0 N
|
0.00 kg / 0.00 LBS
~0 Gs
|
Table 7: Safety (HSE) (electronics) - warnings
MPL 60x10x5 / N38
| Object / Device | Limit (Gauss) / mT | Safe distance |
|---|---|---|
| Pacemaker | 5 Gs (0.5 mT) | 10.5 cm |
| Hearing aid | 10 Gs (1.0 mT) | 8.0 cm |
| Timepiece | 20 Gs (2.0 mT) | 6.0 cm |
| Phone / Smartphone | 40 Gs (4.0 mT) | 4.5 cm |
| Remote | 50 Gs (5.0 mT) | 4.5 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) - collision effects
MPL 60x10x5 / N38
| Start from (mm) | Speed (km/h) | Energy (J) | Predicted outcome |
|---|---|---|---|
| 10 mm |
29.29 km/h
(8.14 m/s)
|
0.74 J | |
| 30 mm |
49.65 km/h
(13.79 m/s)
|
2.14 J | |
| 50 mm |
64.07 km/h
(17.80 m/s)
|
3.56 J | |
| 100 mm |
90.60 km/h
(25.17 m/s)
|
7.13 J |
Table 9: Anti-corrosion coating durability
MPL 60x10x5 / 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 60x10x5 / N38
| Parameter | Value | SI Unit / Description |
|---|---|---|
| Magnetic Flux | 14 969 Mx | 149.7 µWb |
| Pc Coefficient | 0.26 | Low (Flat) |
Table 11: Underwater work (magnet fishing)
MPL 60x10x5 / N38
| Environment | Effective steel pull | Effect |
|---|---|---|
| Air (land) | 18.16 kg | Standard |
| Water (riverbed) |
20.79 kg
(+2.63 kg buoyancy gain)
|
+14.5% |
1. Sliding resistance
*Warning: On a vertical wall, the magnet retains merely approx. 20-30% of its perpendicular strength.
2. Plate thickness effect
*Thin steel (e.g. 0.5mm PC case) drastically weakens the holding force.
3. Temperature resistance
*For N38 grade, the max working temp is 80°C.
4. Demagnetization curve and operating point (B-H)
chart generated for the permeance coefficient Pc (Permeance Coefficient) = 0.26
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.
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% |
Sustainability
| recyclability (EoL) | 100% |
| recycled raw materials | ~10% (pre-cons) |
| carbon footprint | low / zredukowany |
| waste code (EWC) | 16 02 16 |
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Pros as well as cons of Nd2Fe14B magnets.
Benefits
- They retain full power for around 10 years – the loss is just ~1% (according to analyses),
- They possess excellent resistance to magnetism drop due to opposing magnetic fields,
- Thanks to the elegant finish, the layer of nickel, gold, or silver-plated gives an aesthetic appearance,
- The surface of neodymium magnets generates a concentrated magnetic field – this is a distinguishing feature,
- Through (adequate) combination of ingredients, they can achieve high thermal strength, allowing for operation at temperatures reaching 230°C and above...
- Thanks to freedom in shaping and the ability to modify to unusual requirements,
- Fundamental importance in innovative solutions – they find application in hard drives, motor assemblies, diagnostic systems, as well as industrial machines.
- Relatively small size with high pulling force – neodymium magnets offer impressive pulling force in tiny dimensions, which allows their use in miniature devices
Disadvantages
- To avoid cracks upon strong impacts, we suggest using special steel housings. Such a solution protects the magnet and simultaneously improves its durability.
- We warn that neodymium magnets can reduce their strength at high temperatures. To prevent this, we suggest our specialized [AH] magnets, which work effectively even at 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 immune to moisture, in case of application outdoors
- Due to limitations in realizing threads and complicated forms in magnets, we propose using casing - magnetic holder.
- Potential hazard resulting from small fragments of magnets can be dangerous, in case of ingestion, which is particularly important in the context of child health protection. It is also worth noting that small components of these devices can complicate diagnosis medical after entering the body.
- Higher cost of purchase is one of the disadvantages compared to ceramic magnets, especially in budget applications
Holding force characteristics
Optimal lifting capacity of a neodymium magnet – what affects it?
- with the use of a yoke made of low-carbon steel, guaranteeing maximum field concentration
- whose transverse dimension is min. 10 mm
- with an ideally smooth touching surface
- without any clearance between the magnet and steel
- during detachment in a direction vertical to the mounting surface
- in temp. approx. 20°C
What influences lifting capacity in practice
- Gap (between the magnet and the metal), because even a tiny distance (e.g. 0.5 mm) can cause a decrease in force by up to 50% (this also applies to paint, rust or debris).
- Pull-off angle – remember that the magnet has greatest strength perpendicularly. Under sliding down, the holding force drops drastically, often to levels of 20-30% of the nominal value.
- Plate thickness – too thin plate does not close the flux, causing part of the flux to be wasted into the air.
- Material type – the best choice is high-permeability steel. Hardened steels may generate lower lifting capacity.
- Surface quality – the smoother and more polished the surface, the better the adhesion and higher the lifting capacity. Unevenness acts like micro-gaps.
- Thermal factor – high temperature reduces magnetic field. Exceeding the limit temperature can permanently demagnetize the magnet.
Lifting capacity was measured with the use of a polished steel plate of suitable thickness (min. 20 mm), under perpendicular detachment force, however under attempts to slide the magnet the lifting capacity is smaller. Additionally, even a minimal clearance between the magnet’s surface and the plate decreases the load capacity.
Safe handling of neodymium magnets
Hand protection
Big blocks can break fingers instantly. Never place your hand between two attracting surfaces.
Heat sensitivity
Regular neodymium magnets (N-type) undergo demagnetization when the temperature exceeds 80°C. Damage is permanent.
Magnetic media
Data protection: Neodymium magnets can damage data carriers and sensitive devices (heart implants, medical aids, timepieces).
Fragile material
Neodymium magnets are ceramic materials, which means they are fragile like glass. Clashing of two magnets will cause them shattering into small pieces.
Allergic reactions
Nickel alert: The Ni-Cu-Ni coating consists of nickel. If an allergic reaction occurs, immediately stop working with magnets and use protective gear.
Do not give to children
Always keep magnets out of reach of children. Risk of swallowing is significant, and the consequences of magnets connecting inside the body are tragic.
Precision electronics
GPS units and mobile phones are extremely susceptible to magnetic fields. Close proximity with a powerful NdFeB magnet can decalibrate the internal compass in your phone.
Dust is flammable
Powder created during cutting of magnets is self-igniting. Do not drill into magnets unless you are an expert.
Pacemakers
Life threat: Neodymium magnets can turn off pacemakers and defibrillators. Stay away if you have medical devices.
Safe operation
Before starting, read the rules. Sudden snapping can destroy the magnet or hurt your hand. Think ahead.
