MPL 5x5x1.2 / N38 - lamellar magnet
lamellar magnet
Catalog no 020171
GTIN/EAN: 5906301811770
length
5 mm [±0,1 mm]
Width
5 mm [±0,1 mm]
Height
1.2 mm [±0,1 mm]
Weight
0.22 g
Magnetization Direction
↑ axial
Load capacity
0.44 kg / 4.28 N
Magnetic Induction
245.17 mT / 2452 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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Technical data - MPL 5x5x1.2 / N38 - lamellar magnet
Specification / characteristics - MPL 5x5x1.2 / N38 - lamellar magnet
| properties | values |
|---|---|
| Cat. no. | 020171 |
| GTIN/EAN | 5906301811770 |
| 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 | 1.2 mm [±0,1 mm] |
| Weight | 0.22 g |
| Magnetization Direction | ↑ axial |
| Load capacity ~ ? | 0.44 kg / 4.28 N |
| Magnetic Induction ~ ? | 245.17 mT / 2452 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 |
Engineering simulation of the product - technical parameters
Presented information constitute the direct effect of a mathematical analysis. Results are based on models for the material Nd2Fe14B. Real-world conditions might slightly differ from theoretical values. Please consider these data as a supplementary guide when designing systems.
Table 1: Static force (force vs gap) - characteristics
MPL 5x5x1.2 / N38
| Distance (mm) | Induction (Gauss) / mT | Pull Force (kg/lbs/g/N) | Risk Status |
|---|---|---|---|
| 0 mm |
2450 Gs
245.0 mT
|
0.44 kg / 0.97 LBS
440.0 g / 4.3 N
|
safe |
| 1 mm |
1739 Gs
173.9 mT
|
0.22 kg / 0.49 LBS
221.8 g / 2.2 N
|
safe |
| 2 mm |
1054 Gs
105.4 mT
|
0.08 kg / 0.18 LBS
81.4 g / 0.8 N
|
safe |
| 3 mm |
622 Gs
62.2 mT
|
0.03 kg / 0.06 LBS
28.4 g / 0.3 N
|
safe |
| 5 mm |
241 Gs
24.1 mT
|
0.00 kg / 0.01 LBS
4.3 g / 0.0 N
|
safe |
| 10 mm |
45 Gs
4.5 mT
|
0.00 kg / 0.00 LBS
0.1 g / 0.0 N
|
safe |
| 15 mm |
15 Gs
1.5 mT
|
0.00 kg / 0.00 LBS
0.0 g / 0.0 N
|
safe |
| 20 mm |
7 Gs
0.7 mT
|
0.00 kg / 0.00 LBS
0.0 g / 0.0 N
|
safe |
| 30 mm |
2 Gs
0.2 mT
|
0.00 kg / 0.00 LBS
0.0 g / 0.0 N
|
safe |
| 50 mm |
0 Gs
0.0 mT
|
0.00 kg / 0.00 LBS
0.0 g / 0.0 N
|
safe |
Table 2: Vertical load (vertical surface)
MPL 5x5x1.2 / N38
| Distance (mm) | Friction coefficient | Pull Force (kg/lbs/g/N) |
|---|---|---|
| 0 mm | Stal (~0.2) |
0.09 kg / 0.19 LBS
88.0 g / 0.9 N
|
| 1 mm | Stal (~0.2) |
0.04 kg / 0.10 LBS
44.0 g / 0.4 N
|
| 2 mm | Stal (~0.2) |
0.02 kg / 0.04 LBS
16.0 g / 0.2 N
|
| 3 mm | Stal (~0.2) |
0.01 kg / 0.01 LBS
6.0 g / 0.1 N
|
| 5 mm | Stal (~0.2) |
0.00 kg / 0.00 LBS
0.0 g / 0.0 N
|
| 10 mm | Stal (~0.2) |
0.00 kg / 0.00 LBS
0.0 g / 0.0 N
|
| 15 mm | Stal (~0.2) |
0.00 kg / 0.00 LBS
0.0 g / 0.0 N
|
| 20 mm | Stal (~0.2) |
0.00 kg / 0.00 LBS
0.0 g / 0.0 N
|
| 30 mm | Stal (~0.2) |
0.00 kg / 0.00 LBS
0.0 g / 0.0 N
|
| 50 mm | Stal (~0.2) |
0.00 kg / 0.00 LBS
0.0 g / 0.0 N
|
Table 3: Vertical assembly (sliding) - vertical pull
MPL 5x5x1.2 / N38
| Surface type | Friction coefficient / % Mocy | Max load (kg/lbs/g/N) |
|---|---|---|
| Raw steel |
µ = 0.3
30% Nominalnej Siły
|
0.13 kg / 0.29 LBS
132.0 g / 1.3 N
|
| Painted steel (standard) |
µ = 0.2
20% Nominalnej Siły
|
0.09 kg / 0.19 LBS
88.0 g / 0.9 N
|
| Oily/slippery steel |
µ = 0.1
10% Nominalnej Siły
|
0.04 kg / 0.10 LBS
44.0 g / 0.4 N
|
| Magnet with anti-slip rubber |
µ = 0.5
50% Nominalnej Siły
|
0.22 kg / 0.49 LBS
220.0 g / 2.2 N
|
Table 4: Steel thickness (substrate influence) - sheet metal selection
MPL 5x5x1.2 / N38
| Steel thickness (mm) | % power | Real pull force (kg/lbs/g/N) |
|---|---|---|
| 0.5 mm |
|
0.04 kg / 0.10 LBS
44.0 g / 0.4 N
|
| 1 mm |
|
0.11 kg / 0.24 LBS
110.0 g / 1.1 N
|
| 2 mm |
|
0.22 kg / 0.49 LBS
220.0 g / 2.2 N
|
| 3 mm |
|
0.33 kg / 0.73 LBS
330.0 g / 3.2 N
|
| 5 mm |
|
0.44 kg / 0.97 LBS
440.0 g / 4.3 N
|
| 10 mm |
|
0.44 kg / 0.97 LBS
440.0 g / 4.3 N
|
| 11 mm |
|
0.44 kg / 0.97 LBS
440.0 g / 4.3 N
|
| 12 mm |
|
0.44 kg / 0.97 LBS
440.0 g / 4.3 N
|
Table 5: Thermal resistance (stability) - thermal limit
MPL 5x5x1.2 / N38
| Ambient temp. (°C) | Power loss | Remaining pull (kg/lbs/g/N) | Status |
|---|---|---|---|
| 20 °C | 0.0% |
0.44 kg / 0.97 LBS
440.0 g / 4.3 N
|
OK |
| 40 °C | -2.2% |
0.43 kg / 0.95 LBS
430.3 g / 4.2 N
|
OK |
| 60 °C | -4.4% |
0.42 kg / 0.93 LBS
420.6 g / 4.1 N
|
|
| 80 °C | -6.6% |
0.41 kg / 0.91 LBS
411.0 g / 4.0 N
|
|
| 100 °C | -28.8% |
0.31 kg / 0.69 LBS
313.3 g / 3.1 N
|
Table 6: Magnet-Magnet interaction (repulsion) - forces in the system
MPL 5x5x1.2 / N38
| Gap (mm) | Attraction (kg/lbs) (N-S) | Sliding Force (kg/lbs/g/N) | Repulsion (kg/lbs) (N-N) |
|---|---|---|---|
| 0 mm |
0.92 kg / 2.04 LBS
4 027 Gs
|
0.14 kg / 0.31 LBS
139 g / 1.4 N
|
N/A |
| 1 mm |
0.70 kg / 1.54 LBS
4 260 Gs
|
0.10 kg / 0.23 LBS
105 g / 1.0 N
|
0.63 kg / 1.39 LBS
~0 Gs
|
| 2 mm |
0.47 kg / 1.03 LBS
3 478 Gs
|
0.07 kg / 0.15 LBS
70 g / 0.7 N
|
0.42 kg / 0.93 LBS
~0 Gs
|
| 3 mm |
0.29 kg / 0.63 LBS
2 734 Gs
|
0.04 kg / 0.10 LBS
43 g / 0.4 N
|
0.26 kg / 0.57 LBS
~0 Gs
|
| 5 mm |
0.10 kg / 0.22 LBS
1 617 Gs
|
0.02 kg / 0.03 LBS
15 g / 0.1 N
|
0.09 kg / 0.20 LBS
~0 Gs
|
| 10 mm |
0.01 kg / 0.02 LBS
482 Gs
|
0.00 kg / 0.00 LBS
1 g / 0.0 N
|
0.00 kg / 0.00 LBS
~0 Gs
|
| 20 mm |
0.00 kg / 0.00 LBS
90 Gs
|
0.00 kg / 0.00 LBS
0 g / 0.0 N
|
0.00 kg / 0.00 LBS
~0 Gs
|
| 50 mm |
0.00 kg / 0.00 LBS
7 Gs
|
0.00 kg / 0.00 LBS
0 g / 0.0 N
|
0.00 kg / 0.00 LBS
~0 Gs
|
| 60 mm |
0.00 kg / 0.00 LBS
4 Gs
|
0.00 kg / 0.00 LBS
0 g / 0.0 N
|
0.00 kg / 0.00 LBS
~0 Gs
|
| 70 mm |
0.00 kg / 0.00 LBS
3 Gs
|
0.00 kg / 0.00 LBS
0 g / 0.0 N
|
0.00 kg / 0.00 LBS
~0 Gs
|
| 80 mm |
0.00 kg / 0.00 LBS
2 Gs
|
0.00 kg / 0.00 LBS
0 g / 0.0 N
|
0.00 kg / 0.00 LBS
~0 Gs
|
| 90 mm |
0.00 kg / 0.00 LBS
1 Gs
|
0.00 kg / 0.00 LBS
0 g / 0.0 N
|
0.00 kg / 0.00 LBS
~0 Gs
|
| 100 mm |
0.00 kg / 0.00 LBS
1 Gs
|
0.00 kg / 0.00 LBS
0 g / 0.0 N
|
0.00 kg / 0.00 LBS
~0 Gs
|
Table 7: Safety (HSE) (electronics) - warnings
MPL 5x5x1.2 / 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) | 1.0 cm |
| Payment card | 400 Gs (40.0 mT) | 0.5 cm |
| HDD hard drive | 600 Gs (60.0 mT) | 0.5 cm |
Table 8: Dynamics (kinetic energy) - collision effects
MPL 5x5x1.2 / N38
| Start from (mm) | Speed (km/h) | Energy (J) | Predicted outcome |
|---|---|---|---|
| 10 mm |
45.11 km/h
(12.53 m/s)
|
0.02 J | |
| 30 mm |
78.12 km/h
(21.70 m/s)
|
0.05 J | |
| 50 mm |
100.85 km/h
(28.01 m/s)
|
0.09 J | |
| 100 mm |
142.63 km/h
(39.62 m/s)
|
0.17 J |
Table 9: Surface protection spec
MPL 5x5x1.2 / 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 (Flux)
MPL 5x5x1.2 / N38
| Parameter | Value | SI Unit / Description |
|---|---|---|
| Magnetic Flux | 695 Mx | 7.0 µWb |
| Pc Coefficient | 0.30 | Low (Flat) |
Table 11: Hydrostatics and buoyancy
MPL 5x5x1.2 / N38
| Environment | Effective steel pull | Effect |
|---|---|---|
| Air (land) | 0.44 kg | Standard |
| Water (riverbed) |
0.50 kg
(+0.06 kg buoyancy gain)
|
+14.5% |
1. Sliding resistance
*Warning: On a vertical surface, the magnet holds just approx. 20-30% of its max power.
2. Plate thickness effect
*Thin steel (e.g. computer case) severely weakens the holding force.
3. Thermal stability
*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) = 0.30
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 deals
Pros and cons of Nd2Fe14B magnets.
Pros
- They virtually do not lose power, because even after ten years the decline in efficiency is only ~1% (according to literature),
- Neodymium magnets are distinguished by extremely resistant to magnetic field loss caused by external field sources,
- The use of an shiny layer of noble metals (nickel, gold, silver) causes the element to be more visually attractive,
- Magnetic induction on the working part of the magnet is impressive,
- Made from properly selected components, these magnets show impressive resistance to high heat, enabling them to function (depending on their shape) at temperatures up to 230°C and above...
- Thanks to the potential of accurate forming and customization to specialized needs, neodymium magnets can be produced in a variety of geometric configurations, which expands the range of possible applications,
- Fundamental importance in innovative solutions – they are commonly used in mass storage devices, brushless drives, medical devices, and modern systems.
- Compactness – despite small sizes they offer powerful magnetic field, making them ideal for precision applications
Weaknesses
- To avoid cracks upon strong impacts, we suggest using special steel housings. Such a solution secures the magnet and simultaneously increases its durability.
- When exposed to high temperature, neodymium magnets suffer a drop in force. Often, when the temperature exceeds 80°C, their strength 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 corrode. Therefore during using outdoors, we advise using waterproof magnets made of rubber, plastic or other material resistant to moisture
- We recommend casing - magnetic mechanism, due to difficulties in realizing threads inside the magnet and complex forms.
- Health risk related to microscopic parts of magnets pose a threat, if swallowed, which is particularly important in the context of child safety. It is also worth noting that small elements of these magnets can be problematic in diagnostics medical when they are in the body.
- Higher cost of purchase is a significant factor to consider compared to ceramic magnets, especially in budget applications
Lifting parameters
Maximum magnetic pulling force – what contributes to it?
- using a base made of high-permeability steel, acting as a magnetic yoke
- whose transverse dimension equals approx. 10 mm
- characterized by smoothness
- under conditions of no distance (surface-to-surface)
- under axial force vector (90-degree angle)
- in temp. approx. 20°C
Practical lifting capacity: influencing factors
- Air gap (between the magnet and the plate), as even a very small distance (e.g. 0.5 mm) can cause a reduction 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 significantly, often to levels of 20-30% of the nominal value.
- Element thickness – to utilize 100% power, the steel must be adequately massive. Paper-thin metal limits the attraction force (the magnet "punches through" it).
- Material type – the best choice is pure iron steel. Stainless steels may have worse magnetic properties.
- Surface finish – ideal contact is possible only on smooth steel. Rough texture reduce the real contact area, reducing force.
- Thermal factor – hot environment weakens pulling force. Exceeding the limit temperature can permanently damage the magnet.
Holding force was tested on a smooth steel plate of 20 mm thickness, when a perpendicular force was applied, in contrast under attempts to slide the magnet the holding force is lower. In addition, even a minimal clearance between the magnet and the plate decreases the load capacity.
Warnings
Power loss in heat
Standard neodymium magnets (N-type) undergo demagnetization when the temperature goes above 80°C. The loss of strength is permanent.
Threat to navigation
Remember: rare earth magnets produce a field that confuses precision electronics. Maintain a safe distance from your mobile, tablet, and GPS.
Do not underestimate power
Exercise caution. Neodymium magnets attract from a distance and connect with massive power, often faster than you can move away.
Electronic devices
Equipment safety: Neodymium magnets can damage payment cards and sensitive devices (heart implants, medical aids, mechanical watches).
Swallowing risk
Only for adults. Tiny parts can be swallowed, leading to intestinal necrosis. Keep away from children and animals.
Fire risk
Dust produced during cutting of magnets is flammable. Do not drill into magnets unless you are an expert.
Avoid contact if allergic
Nickel alert: The nickel-copper-nickel coating contains nickel. If redness appears, immediately stop handling magnets and use protective gear.
Crushing force
Watch your fingers. Two large magnets will snap together immediately with a force of massive weight, destroying anything in their path. Exercise extreme caution!
Medical implants
Patients with a heart stimulator have to keep an safe separation from magnets. The magnetic field can stop the functioning of the implant.
Fragile material
Despite metallic appearance, the material is brittle and cannot withstand shocks. Do not hit, as the magnet may shatter into sharp, dangerous pieces.
