MPL 5x5x1.5 / N38 - lamellar magnet
lamellar magnet
Catalog no 020172
GTIN/EAN: 5906301811787
length
5 mm [±0,1 mm]
Width
5 mm [±0,1 mm]
Height
1.5 mm [±0,1 mm]
Weight
0.28 g
Magnetization Direction
↑ axial
Load capacity
0.58 kg / 5.68 N
Magnetic Induction
293.49 mT / 2935 Gs
Coating
[NiCuNi] Nickel
0.1845 ZŁ with VAT / pcs + price for transport
0.1500 ZŁ net + 23% VAT / pcs
bulk discounts:
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Physical properties - MPL 5x5x1.5 / N38 - lamellar magnet
Specification / characteristics - MPL 5x5x1.5 / N38 - lamellar magnet
| properties | values |
|---|---|
| Cat. no. | 020172 |
| GTIN/EAN | 5906301811787 |
| Production/Distribution | Dhit sp. z o.o. |
| Country of origin | Poland / China / Germany |
| Customs code | 85059029 |
| length | 5 mm [±0,1 mm] |
| Width | 5 mm [±0,1 mm] |
| Height | 1.5 mm [±0,1 mm] |
| Weight | 0.28 g |
| Magnetization Direction | ↑ axial |
| Load capacity ~ ? | 0.58 kg / 5.68 N |
| Magnetic Induction ~ ? | 293.49 mT / 2935 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 analysis of the magnet - technical parameters
These data constitute the direct effect of a engineering analysis. Values rely on models for the material Nd2Fe14B. Actual performance may differ from theoretical values. Use these calculations as a reference point when designing systems.
Table 1: Static force (force vs distance) - power drop
MPL 5x5x1.5 / N38
| Distance (mm) | Induction (Gauss) / mT | Pull Force (kg/lbs/g/N) | Risk Status |
|---|---|---|---|
| 0 mm |
2932 Gs
293.2 mT
|
0.58 kg / 1.28 pounds
580.0 g / 5.7 N
|
weak grip |
| 1 mm |
2036 Gs
203.6 mT
|
0.28 kg / 0.62 pounds
279.6 g / 2.7 N
|
weak grip |
| 2 mm |
1228 Gs
122.8 mT
|
0.10 kg / 0.22 pounds
101.7 g / 1.0 N
|
weak grip |
| 3 mm |
727 Gs
72.7 mT
|
0.04 kg / 0.08 pounds
35.7 g / 0.3 N
|
weak grip |
| 5 mm |
285 Gs
28.5 mT
|
0.01 kg / 0.01 pounds
5.5 g / 0.1 N
|
weak grip |
| 10 mm |
54 Gs
5.4 mT
|
0.00 kg / 0.00 pounds
0.2 g / 0.0 N
|
weak grip |
| 15 mm |
18 Gs
1.8 mT
|
0.00 kg / 0.00 pounds
0.0 g / 0.0 N
|
weak grip |
| 20 mm |
8 Gs
0.8 mT
|
0.00 kg / 0.00 pounds
0.0 g / 0.0 N
|
weak grip |
| 30 mm |
3 Gs
0.3 mT
|
0.00 kg / 0.00 pounds
0.0 g / 0.0 N
|
weak grip |
| 50 mm |
1 Gs
0.1 mT
|
0.00 kg / 0.00 pounds
0.0 g / 0.0 N
|
weak grip |
Table 2: Sliding capacity (wall)
MPL 5x5x1.5 / N38
| Distance (mm) | Friction coefficient | Pull Force (kg/lbs/g/N) |
|---|---|---|
| 0 mm | Stal (~0.2) |
0.12 kg / 0.26 pounds
116.0 g / 1.1 N
|
| 1 mm | Stal (~0.2) |
0.06 kg / 0.12 pounds
56.0 g / 0.5 N
|
| 2 mm | Stal (~0.2) |
0.02 kg / 0.04 pounds
20.0 g / 0.2 N
|
| 3 mm | Stal (~0.2) |
0.01 kg / 0.02 pounds
8.0 g / 0.1 N
|
| 5 mm | Stal (~0.2) |
0.00 kg / 0.00 pounds
2.0 g / 0.0 N
|
| 10 mm | Stal (~0.2) |
0.00 kg / 0.00 pounds
0.0 g / 0.0 N
|
| 15 mm | Stal (~0.2) |
0.00 kg / 0.00 pounds
0.0 g / 0.0 N
|
| 20 mm | Stal (~0.2) |
0.00 kg / 0.00 pounds
0.0 g / 0.0 N
|
| 30 mm | Stal (~0.2) |
0.00 kg / 0.00 pounds
0.0 g / 0.0 N
|
| 50 mm | Stal (~0.2) |
0.00 kg / 0.00 pounds
0.0 g / 0.0 N
|
Table 3: Wall mounting (sliding) - vertical pull
MPL 5x5x1.5 / N38
| Surface type | Friction coefficient / % Mocy | Max load (kg/lbs/g/N) |
|---|---|---|
| Raw steel |
µ = 0.3
30% Nominalnej Siły
|
0.17 kg / 0.38 pounds
174.0 g / 1.7 N
|
| Painted steel (standard) |
µ = 0.2
20% Nominalnej Siły
|
0.12 kg / 0.26 pounds
116.0 g / 1.1 N
|
| Oily/slippery steel |
µ = 0.1
10% Nominalnej Siły
|
0.06 kg / 0.13 pounds
58.0 g / 0.6 N
|
| Magnet with anti-slip rubber |
µ = 0.5
50% Nominalnej Siły
|
0.29 kg / 0.64 pounds
290.0 g / 2.8 N
|
Table 4: Material efficiency (saturation) - power losses
MPL 5x5x1.5 / N38
| Steel thickness (mm) | % power | Real pull force (kg/lbs/g/N) |
|---|---|---|
| 0.5 mm |
|
0.06 kg / 0.13 pounds
58.0 g / 0.6 N
|
| 1 mm |
|
0.15 kg / 0.32 pounds
145.0 g / 1.4 N
|
| 2 mm |
|
0.29 kg / 0.64 pounds
290.0 g / 2.8 N
|
| 3 mm |
|
0.43 kg / 0.96 pounds
435.0 g / 4.3 N
|
| 5 mm |
|
0.58 kg / 1.28 pounds
580.0 g / 5.7 N
|
| 10 mm |
|
0.58 kg / 1.28 pounds
580.0 g / 5.7 N
|
| 11 mm |
|
0.58 kg / 1.28 pounds
580.0 g / 5.7 N
|
| 12 mm |
|
0.58 kg / 1.28 pounds
580.0 g / 5.7 N
|
Table 5: Thermal resistance (stability) - thermal limit
MPL 5x5x1.5 / N38
| Ambient temp. (°C) | Power loss | Remaining pull (kg/lbs/g/N) | Status |
|---|---|---|---|
| 20 °C | 0.0% |
0.58 kg / 1.28 pounds
580.0 g / 5.7 N
|
OK |
| 40 °C | -2.2% |
0.57 kg / 1.25 pounds
567.2 g / 5.6 N
|
OK |
| 60 °C | -4.4% |
0.55 kg / 1.22 pounds
554.5 g / 5.4 N
|
|
| 80 °C | -6.6% |
0.54 kg / 1.19 pounds
541.7 g / 5.3 N
|
|
| 100 °C | -28.8% |
0.41 kg / 0.91 pounds
413.0 g / 4.1 N
|
Table 6: Two magnets (repulsion) - field range
MPL 5x5x1.5 / N38
| Gap (mm) | Attraction (kg/lbs) (N-S) | Sliding Force (kg/lbs/g/N) | Repulsion (kg/lbs) (N-N) |
|---|---|---|---|
| 0 mm |
1.33 kg / 2.92 pounds
4 518 Gs
|
0.20 kg / 0.44 pounds
199 g / 1.9 N
|
N/A |
| 1 mm |
0.97 kg / 2.15 pounds
5 027 Gs
|
0.15 kg / 0.32 pounds
146 g / 1.4 N
|
0.88 kg / 1.93 pounds
~0 Gs
|
| 2 mm |
0.64 kg / 1.41 pounds
4 071 Gs
|
0.10 kg / 0.21 pounds
96 g / 0.9 N
|
0.57 kg / 1.27 pounds
~0 Gs
|
| 3 mm |
0.39 kg / 0.86 pounds
3 188 Gs
|
0.06 kg / 0.13 pounds
59 g / 0.6 N
|
0.35 kg / 0.78 pounds
~0 Gs
|
| 5 mm |
0.14 kg / 0.30 pounds
1 886 Gs
|
0.02 kg / 0.05 pounds
21 g / 0.2 N
|
0.12 kg / 0.27 pounds
~0 Gs
|
| 10 mm |
0.01 kg / 0.03 pounds
569 Gs
|
0.00 kg / 0.00 pounds
2 g / 0.0 N
|
0.01 kg / 0.02 pounds
~0 Gs
|
| 20 mm |
0.00 kg / 0.00 pounds
108 Gs
|
0.00 kg / 0.00 pounds
0 g / 0.0 N
|
0.00 kg / 0.00 pounds
~0 Gs
|
| 50 mm |
0.00 kg / 0.00 pounds
9 Gs
|
0.00 kg / 0.00 pounds
0 g / 0.0 N
|
0.00 kg / 0.00 pounds
~0 Gs
|
| 60 mm |
0.00 kg / 0.00 pounds
5 Gs
|
0.00 kg / 0.00 pounds
0 g / 0.0 N
|
0.00 kg / 0.00 pounds
~0 Gs
|
| 70 mm |
0.00 kg / 0.00 pounds
3 Gs
|
0.00 kg / 0.00 pounds
0 g / 0.0 N
|
0.00 kg / 0.00 pounds
~0 Gs
|
| 80 mm |
0.00 kg / 0.00 pounds
2 Gs
|
0.00 kg / 0.00 pounds
0 g / 0.0 N
|
0.00 kg / 0.00 pounds
~0 Gs
|
| 90 mm |
0.00 kg / 0.00 pounds
2 Gs
|
0.00 kg / 0.00 pounds
0 g / 0.0 N
|
0.00 kg / 0.00 pounds
~0 Gs
|
| 100 mm |
0.00 kg / 0.00 pounds
1 Gs
|
0.00 kg / 0.00 pounds
0 g / 0.0 N
|
0.00 kg / 0.00 pounds
~0 Gs
|
Table 7: Hazards (implants) - precautionary measures
MPL 5x5x1.5 / N38
| Object / Device | Limit (Gauss) / mT | Safe distance |
|---|---|---|
| Pacemaker | 5 Gs (0.5 mT) | 2.5 cm |
| Hearing aid | 10 Gs (1.0 mT) | 2.0 cm |
| Mechanical watch | 20 Gs (2.0 mT) | 1.5 cm |
| Phone / Smartphone | 40 Gs (4.0 mT) | 1.5 cm |
| Car key | 50 Gs (5.0 mT) | 1.5 cm |
| Payment card | 400 Gs (40.0 mT) | 0.5 cm |
| HDD hard drive | 600 Gs (60.0 mT) | 0.5 cm |
Table 8: Collisions (cracking risk) - warning
MPL 5x5x1.5 / N38
| Start from (mm) | Speed (km/h) | Energy (J) | Predicted outcome |
|---|---|---|---|
| 10 mm |
45.91 km/h
(12.75 m/s)
|
0.02 J | |
| 30 mm |
79.50 km/h
(22.08 m/s)
|
0.07 J | |
| 50 mm |
102.64 km/h
(28.51 m/s)
|
0.11 J | |
| 100 mm |
145.15 km/h
(40.32 m/s)
|
0.23 J |
Table 9: Corrosion resistance
MPL 5x5x1.5 / 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 (Pc)
MPL 5x5x1.5 / N38
| Parameter | Value | SI Unit / Description |
|---|---|---|
| Magnetic Flux | 799 Mx | 8.0 µWb |
| Pc Coefficient | 0.36 | Low (Flat) |
Table 11: Hydrostatics and buoyancy
MPL 5x5x1.5 / N38
| Environment | Effective steel pull | Effect |
|---|---|---|
| Air (land) | 0.58 kg | Standard |
| Water (riverbed) |
0.66 kg
(+0.08 kg buoyancy gain)
|
+14.5% |
1. Vertical hold
*Note: On a vertical wall, the magnet holds only a fraction of its max power.
2. Efficiency vs thickness
*Thin metal sheet (e.g. computer case) severely weakens the holding force.
3. Temperature resistance
*For standard magnets, the critical limit is 80°C.
4. Demagnetization curve and operating point (B-H)
chart generated for the permeance coefficient Pc (Permeance Coefficient) = 0.36
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.
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% |
Environmental data
| recyclability (EoL) | 100% |
| recycled raw materials | ~10% (pre-cons) |
| carbon footprint | low / zredukowany |
| waste code (EWC) | 16 02 16 |
Other products
Advantages as well as disadvantages of rare earth magnets.
Benefits
- They retain attractive force for around 10 years – the loss is just ~1% (according to analyses),
- Magnets perfectly defend themselves against demagnetization caused by ambient magnetic noise,
- A magnet with a shiny silver surface has an effective appearance,
- The surface of neodymium magnets generates a powerful magnetic field – this is a key feature,
- Thanks to resistance to high temperature, they are capable of working (depending on the shape) even at temperatures up to 230°C and higher...
- Possibility of custom machining and adjusting to concrete conditions,
- Versatile presence in advanced technology sectors – they are commonly used in computer drives, electric motors, medical devices, as well as other advanced devices.
- Thanks to efficiency per cm³, small magnets offer high operating force, in miniature format,
Limitations
- They are prone to damage upon heavy impacts. To avoid cracks, it is worth securing magnets in a protective case. Such protection not only protects the magnet but also improves its resistance to damage
- Neodymium magnets decrease their strength under the influence of heating. As soon as 80°C is exceeded, many of them start losing their power. Therefore, we recommend our special magnets marked [AH], which maintain durability 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 stable to moisture, in case of application outdoors
- Limited possibility of creating threads in the magnet and complicated shapes - preferred is casing - magnetic holder.
- Potential hazard to health – tiny shards of magnets can be dangerous, when accidentally swallowed, which becomes key in the aspect of protecting the youngest. It is also worth noting that small components of these magnets are able to complicate diagnosis medical after entering the body.
- High unit price – neodymium magnets are more expensive than other types of magnets (e.g. ferrite), which hinders application in large quantities
Pull force analysis
Maximum magnetic pulling force – what affects it?
- on a base made of mild steel, optimally conducting the magnetic flux
- possessing a thickness of at least 10 mm to ensure full flux closure
- with an polished contact surface
- without any insulating layer between the magnet and steel
- under vertical application of breakaway force (90-degree angle)
- in temp. approx. 20°C
Practical aspects of lifting capacity – factors
- Space between surfaces – even a fraction of a millimeter of distance (caused e.g. by veneer or dirt) diminishes the magnet efficiency, often by half at just 0.5 mm.
- Angle of force application – maximum parameter is reached only during pulling at a 90° angle. The shear force of the magnet along the surface is standardly several times smaller (approx. 1/5 of the lifting capacity).
- Metal thickness – the thinner the sheet, the weaker the hold. Magnetic flux penetrates through instead of converting into lifting capacity.
- Plate material – mild steel gives the best results. Higher carbon content decrease magnetic permeability and lifting capacity.
- Base smoothness – the smoother and more polished the surface, the better the adhesion and higher the lifting capacity. Roughness acts like micro-gaps.
- Heat – neodymium magnets have a negative temperature coefficient. 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 the force acted perpendicularly, however under attempts to slide the magnet the load capacity is reduced by as much as 5 times. Additionally, even a minimal clearance between the magnet and the plate decreases the load capacity.
Safe handling of NdFeB magnets
Combustion hazard
Fire hazard: Neodymium dust is explosive. Avoid machining magnets in home conditions as this may cause fire.
Do not overheat magnets
Control the heat. Exposing the magnet above 80 degrees Celsius will permanently weaken its magnetic structure and pulling force.
Cards and drives
Very strong magnetic fields can destroy records on credit cards, hard drives, and other magnetic media. Maintain a gap of min. 10 cm.
Magnet fragility
Despite metallic appearance, the material is brittle and cannot withstand shocks. Do not hit, as the magnet may shatter into hazardous fragments.
Conscious usage
Be careful. Rare earth magnets attract from a distance and snap with huge force, often faster than you can react.
Warning for allergy sufferers
Medical facts indicate that nickel (standard magnet coating) is a potent allergen. If you have an allergy, avoid direct skin contact and select versions in plastic housing.
Product not for children
Product intended for adults. Small elements pose a choking risk, causing severe trauma. Keep out of reach of kids and pets.
Finger safety
Danger of trauma: The pulling power is so immense that it can cause hematomas, crushing, and even bone fractures. Protective gloves are recommended.
Impact on smartphones
An intense magnetic field interferes with the functioning of magnetometers in phones and GPS navigation. Keep magnets near a smartphone to avoid breaking the sensors.
Danger to pacemakers
Warning for patients: Powerful magnets disrupt medical devices. Maintain minimum 30 cm distance or request help to work with the magnets.
