MPL 5x4x1 / N38 - lamellar magnet
lamellar magnet
Catalog no 020169
GTIN/EAN: 5906301811756
length
5 mm [±0,1 mm]
Width
4 mm [±0,1 mm]
Height
1 mm [±0,1 mm]
Weight
0.15 g
Magnetization Direction
↑ axial
Load capacity
0.32 kg / 3.16 N
Magnetic Induction
232.88 mT / 2329 Gs
Coating
[NiCuNi] Nickel
0.1845 ZŁ with VAT / pcs + price for transport
0.1500 ZŁ net + 23% VAT / pcs
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Technical specification - MPL 5x4x1 / N38 - lamellar magnet
Specification / characteristics - MPL 5x4x1 / N38 - lamellar magnet
| properties | values |
|---|---|
| Cat. no. | 020169 |
| GTIN/EAN | 5906301811756 |
| Production/Distribution | Dhit sp. z o.o. |
| Country of origin | Poland / China / Germany |
| Customs code | 85059029 |
| length | 5 mm [±0,1 mm] |
| Width | 4 mm [±0,1 mm] |
| Height | 1 mm [±0,1 mm] |
| Weight | 0.15 g |
| Magnetization Direction | ↑ axial |
| Load capacity ~ ? | 0.32 kg / 3.16 N |
| Magnetic Induction ~ ? | 232.88 mT / 2329 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 simulation of the product - report
Presented data constitute the outcome of a mathematical simulation. Values are based on algorithms for the material Nd2Fe14B. Real-world parameters may deviate from the simulation results. Treat these calculations as a supplementary guide for designers.
Table 1: Static pull force (pull vs gap) - power drop
MPL 5x4x1 / N38
| Distance (mm) | Induction (Gauss) / mT | Pull Force (kg/lbs/g/N) | Risk Status |
|---|---|---|---|
| 0 mm |
2327 Gs
232.7 mT
|
0.32 kg / 0.71 pounds
320.0 g / 3.1 N
|
weak grip |
| 1 mm |
1559 Gs
155.9 mT
|
0.14 kg / 0.32 pounds
143.7 g / 1.4 N
|
weak grip |
| 2 mm |
876 Gs
87.6 mT
|
0.05 kg / 0.10 pounds
45.3 g / 0.4 N
|
weak grip |
| 3 mm |
488 Gs
48.8 mT
|
0.01 kg / 0.03 pounds
14.1 g / 0.1 N
|
weak grip |
| 5 mm |
177 Gs
17.7 mT
|
0.00 kg / 0.00 pounds
1.9 g / 0.0 N
|
weak grip |
| 10 mm |
31 Gs
3.1 mT
|
0.00 kg / 0.00 pounds
0.1 g / 0.0 N
|
weak grip |
| 15 mm |
10 Gs
1.0 mT
|
0.00 kg / 0.00 pounds
0.0 g / 0.0 N
|
weak grip |
| 20 mm |
4 Gs
0.4 mT
|
0.00 kg / 0.00 pounds
0.0 g / 0.0 N
|
weak grip |
| 30 mm |
1 Gs
0.1 mT
|
0.00 kg / 0.00 pounds
0.0 g / 0.0 N
|
weak grip |
| 50 mm |
0 Gs
0.0 mT
|
0.00 kg / 0.00 pounds
0.0 g / 0.0 N
|
weak grip |
Table 2: Vertical hold (vertical surface)
MPL 5x4x1 / N38
| Distance (mm) | Friction coefficient | Pull Force (kg/lbs/g/N) |
|---|---|---|
| 0 mm | Stal (~0.2) |
0.06 kg / 0.14 pounds
64.0 g / 0.6 N
|
| 1 mm | Stal (~0.2) |
0.03 kg / 0.06 pounds
28.0 g / 0.3 N
|
| 2 mm | Stal (~0.2) |
0.01 kg / 0.02 pounds
10.0 g / 0.1 N
|
| 3 mm | Stal (~0.2) |
0.00 kg / 0.00 pounds
2.0 g / 0.0 N
|
| 5 mm | Stal (~0.2) |
0.00 kg / 0.00 pounds
0.0 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: Vertical assembly (shearing) - vertical pull
MPL 5x4x1 / N38
| Surface type | Friction coefficient / % Mocy | Max load (kg/lbs/g/N) |
|---|---|---|
| Raw steel |
µ = 0.3
30% Nominalnej Siły
|
0.10 kg / 0.21 pounds
96.0 g / 0.9 N
|
| Painted steel (standard) |
µ = 0.2
20% Nominalnej Siły
|
0.06 kg / 0.14 pounds
64.0 g / 0.6 N
|
| Oily/slippery steel |
µ = 0.1
10% Nominalnej Siły
|
0.03 kg / 0.07 pounds
32.0 g / 0.3 N
|
| Magnet with anti-slip rubber |
µ = 0.5
50% Nominalnej Siły
|
0.16 kg / 0.35 pounds
160.0 g / 1.6 N
|
Table 4: Material efficiency (substrate influence) - power losses
MPL 5x4x1 / N38
| Steel thickness (mm) | % power | Real pull force (kg/lbs/g/N) |
|---|---|---|
| 0.5 mm |
|
0.03 kg / 0.07 pounds
32.0 g / 0.3 N
|
| 1 mm |
|
0.08 kg / 0.18 pounds
80.0 g / 0.8 N
|
| 2 mm |
|
0.16 kg / 0.35 pounds
160.0 g / 1.6 N
|
| 3 mm |
|
0.24 kg / 0.53 pounds
240.0 g / 2.4 N
|
| 5 mm |
|
0.32 kg / 0.71 pounds
320.0 g / 3.1 N
|
| 10 mm |
|
0.32 kg / 0.71 pounds
320.0 g / 3.1 N
|
| 11 mm |
|
0.32 kg / 0.71 pounds
320.0 g / 3.1 N
|
| 12 mm |
|
0.32 kg / 0.71 pounds
320.0 g / 3.1 N
|
Table 5: Thermal resistance (material behavior) - power drop
MPL 5x4x1 / N38
| Ambient temp. (°C) | Power loss | Remaining pull (kg/lbs/g/N) | Status |
|---|---|---|---|
| 20 °C | 0.0% |
0.32 kg / 0.71 pounds
320.0 g / 3.1 N
|
OK |
| 40 °C | -2.2% |
0.31 kg / 0.69 pounds
313.0 g / 3.1 N
|
OK |
| 60 °C | -4.4% |
0.31 kg / 0.67 pounds
305.9 g / 3.0 N
|
|
| 80 °C | -6.6% |
0.30 kg / 0.66 pounds
298.9 g / 2.9 N
|
|
| 100 °C | -28.8% |
0.23 kg / 0.50 pounds
227.8 g / 2.2 N
|
Table 6: Two magnets (attraction) - forces in the system
MPL 5x4x1 / N38
| Gap (mm) | Attraction (kg/lbs) (N-S) | Lateral Force (kg/lbs/g/N) | Repulsion (kg/lbs) (N-N) |
|---|---|---|---|
| 0 mm |
0.67 kg / 1.47 pounds
3 878 Gs
|
0.10 kg / 0.22 pounds
100 g / 1.0 N
|
N/A |
| 1 mm |
0.48 kg / 1.06 pounds
3 959 Gs
|
0.07 kg / 0.16 pounds
72 g / 0.7 N
|
0.43 kg / 0.96 pounds
~0 Gs
|
| 2 mm |
0.30 kg / 0.66 pounds
3 118 Gs
|
0.04 kg / 0.10 pounds
45 g / 0.4 N
|
0.27 kg / 0.59 pounds
~0 Gs
|
| 3 mm |
0.17 kg / 0.38 pounds
2 356 Gs
|
0.03 kg / 0.06 pounds
26 g / 0.3 N
|
0.15 kg / 0.34 pounds
~0 Gs
|
| 5 mm |
0.05 kg / 0.12 pounds
1 302 Gs
|
0.01 kg / 0.02 pounds
8 g / 0.1 N
|
0.05 kg / 0.10 pounds
~0 Gs
|
| 10 mm |
0.00 kg / 0.01 pounds
355 Gs
|
0.00 kg / 0.00 pounds
1 g / 0.0 N
|
0.00 kg / 0.00 pounds
~0 Gs
|
| 20 mm |
0.00 kg / 0.00 pounds
63 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
5 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
3 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
2 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
1 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
1 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) - warnings
MPL 5x4x1 / N38
| Object / Device | Limit (Gauss) / mT | Safe distance |
|---|---|---|
| Pacemaker | 5 Gs (0.5 mT) | 2.0 cm |
| Hearing aid | 10 Gs (1.0 mT) | 2.0 cm |
| Timepiece | 20 Gs (2.0 mT) | 1.5 cm |
| Mobile device | 40 Gs (4.0 mT) | 1.0 cm |
| Car key | 50 Gs (5.0 mT) | 1.0 cm |
| Payment card | 400 Gs (40.0 mT) | 0.5 cm |
| HDD hard drive | 600 Gs (60.0 mT) | 0.5 cm |
Table 8: Impact energy (kinetic energy) - collision effects
MPL 5x4x1 / N38
| Start from (mm) | Speed (km/h) | Energy (J) | Predicted outcome |
|---|---|---|---|
| 10 mm |
46.59 km/h
(12.94 m/s)
|
0.01 J | |
| 30 mm |
80.68 km/h
(22.41 m/s)
|
0.04 J | |
| 50 mm |
104.16 km/h
(28.93 m/s)
|
0.06 J | |
| 100 mm |
147.30 km/h
(40.92 m/s)
|
0.13 J |
Table 9: Anti-corrosion coating durability
MPL 5x4x1 / 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 5x4x1 / N38
| Parameter | Value | SI Unit / Description |
|---|---|---|
| Magnetic Flux | 531 Mx | 5.3 µWb |
| Pc Coefficient | 0.29 | Low (Flat) |
Table 11: Hydrostatics and buoyancy
MPL 5x4x1 / N38
| Environment | Effective steel pull | Effect |
|---|---|---|
| Air (land) | 0.32 kg | Standard |
| Water (riverbed) |
0.37 kg
(+0.05 kg buoyancy gain)
|
+14.5% |
1. Vertical hold
*Caution: On a vertical wall, the magnet retains merely ~20% of its max power.
2. Steel saturation
*Thin metal sheet (e.g. computer case) severely limits the holding force.
3. Temperature resistance
*For standard magnets, the safety limit is 80°C.
4. Demagnetization curve and operating point (B-H)
chart generated for the permeance coefficient Pc (Permeance Coefficient) = 0.29
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% |
Ecology and recycling (GPSR)
| recyclability (EoL) | 100% |
| recycled raw materials | ~10% (pre-cons) |
| carbon footprint | low / zredukowany |
| waste code (EWC) | 16 02 16 |
Other products
Pros and cons of rare earth magnets.
Benefits
- They do not lose power, even during around 10 years – the drop in lifting capacity is only ~1% (theoretically),
- Neodymium magnets are distinguished by exceptionally resistant to magnetic field loss caused by magnetic disturbances,
- By applying a lustrous coating of nickel, the element acquires an aesthetic look,
- Magnets are distinguished by huge magnetic induction on the working surface,
- Thanks to resistance to high temperature, they can operate (depending on the form) even at temperatures up to 230°C and higher...
- Possibility of individual forming and optimizing to concrete needs,
- Fundamental importance in high-tech industry – they are commonly used in magnetic memories, brushless drives, precision medical tools, also industrial machines.
- Relatively small size with high pulling force – neodymium magnets offer impressive pulling force in compact dimensions, which enables their usage in small systems
Disadvantages
- Brittleness is one of their disadvantages. Upon strong impact they can fracture. We recommend keeping them in a steel housing, which not only protects them against impacts but also raises their 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, as well as shape of the magnet). For those who need magnets for extreme conditions, we offer [AH] versions withstanding up to 230°C
- Magnets exposed to a humid environment can rust. Therefore when using outdoors, we advise using water-impermeable magnets made of rubber, plastic or other material protecting against moisture
- Due to limitations in producing nuts and complex shapes in magnets, we propose using casing - magnetic mechanism.
- Potential hazard resulting from small fragments of magnets are risky, in case of ingestion, which gains importance in the context of child health protection. It is also worth noting that tiny parts of these products can complicate diagnosis medical after entering the body.
- With budget limitations the cost of neodymium magnets is economically unviable,
Lifting parameters
Optimal lifting capacity of a neodymium magnet – what contributes to it?
- with the use of a yoke made of low-carbon steel, ensuring full magnetic saturation
- whose thickness is min. 10 mm
- with an ground touching surface
- without the slightest clearance between the magnet and steel
- under axial application of breakaway force (90-degree angle)
- in stable room temperature
Lifting capacity in practice – influencing factors
- Gap between surfaces – every millimeter of distance (caused e.g. by varnish or unevenness) diminishes the pulling force, often by half at just 0.5 mm.
- Load vector – maximum parameter is available only during perpendicular pulling. The force required to slide of the magnet along the surface is standardly many times lower (approx. 1/5 of the lifting capacity).
- Wall thickness – thin material does not allow full use of the magnet. Part of the magnetic field penetrates through instead of converting into lifting capacity.
- Steel grade – the best choice is pure iron steel. Stainless steels may have worse magnetic properties.
- Surface finish – ideal contact is possible only on smooth steel. Any scratches and bumps reduce the real contact area, weakening the magnet.
- Thermal environment – temperature increase causes a temporary drop of force. Check the maximum operating temperature for a given model.
Lifting capacity testing was conducted on a smooth plate of optimal thickness, under perpendicular forces, in contrast under shearing force the holding force is lower. In addition, even a slight gap between the magnet’s surface and the plate lowers the holding force.
Warnings
Machining danger
Powder created during machining of magnets is combustible. Do not drill into magnets without proper cooling and knowledge.
Metal Allergy
Warning for allergy sufferers: The Ni-Cu-Ni coating consists of nickel. If skin irritation happens, cease working with magnets and wear gloves.
Finger safety
Mind your fingers. Two powerful magnets will snap together instantly with a force of several hundred kilograms, crushing everything in their path. Be careful!
No play value
Always keep magnets away from children. Choking hazard is significant, and the consequences of magnets connecting inside the body are tragic.
Caution required
Use magnets with awareness. Their immense force can shock even professionals. Plan your moves and do not underestimate their power.
Impact on smartphones
Be aware: neodymium magnets produce a field that interferes with sensitive sensors. Keep a safe distance from your mobile, tablet, and GPS.
Material brittleness
Protect your eyes. Magnets can explode upon violent connection, launching shards into the air. Wear goggles.
Health Danger
People with a heart stimulator have to maintain an safe separation from magnets. The magnetism can interfere with the operation of the life-saving device.
Magnetic media
Avoid bringing magnets close to a purse, computer, or screen. The magnetism can permanently damage these devices and wipe information from cards.
Do not overheat magnets
Do not overheat. Neodymium magnets are susceptible to temperature. If you need resistance above 80°C, ask us about HT versions (H, SH, UH).
