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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Technical details - 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 |
Engineering simulation of the magnet - technical parameters
These values constitute the outcome of a physical calculation. Results were calculated on algorithms for the material Nd2Fe14B. Actual conditions might slightly deviate from the simulation results. Please consider these calculations as a reference point when designing systems.
Table 1: Static pull force (force vs gap) - 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
|
safe |
| 1 mm |
2036 Gs
203.6 mT
|
0.28 kg / 0.62 pounds
279.6 g / 2.7 N
|
safe |
| 2 mm |
1228 Gs
122.8 mT
|
0.10 kg / 0.22 pounds
101.7 g / 1.0 N
|
safe |
| 3 mm |
727 Gs
72.7 mT
|
0.04 kg / 0.08 pounds
35.7 g / 0.3 N
|
safe |
| 5 mm |
285 Gs
28.5 mT
|
0.01 kg / 0.01 pounds
5.5 g / 0.1 N
|
safe |
| 10 mm |
54 Gs
5.4 mT
|
0.00 kg / 0.00 pounds
0.2 g / 0.0 N
|
safe |
| 15 mm |
18 Gs
1.8 mT
|
0.00 kg / 0.00 pounds
0.0 g / 0.0 N
|
safe |
| 20 mm |
8 Gs
0.8 mT
|
0.00 kg / 0.00 pounds
0.0 g / 0.0 N
|
safe |
| 30 mm |
3 Gs
0.3 mT
|
0.00 kg / 0.00 pounds
0.0 g / 0.0 N
|
safe |
| 50 mm |
1 Gs
0.1 mT
|
0.00 kg / 0.00 pounds
0.0 g / 0.0 N
|
safe |
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: Steel thickness (saturation) - sheet metal selection
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 stability (stability) - power drop
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: Magnet-Magnet interaction (attraction) - forces in the system
MPL 5x5x1.5 / N38
| Gap (mm) | Attraction (kg/lbs) (N-S) | Shear 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: Safety (HSE) (implants) - warnings
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 |
| Timepiece | 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: Dynamics (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: Underwater work (magnet fishing)
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
*Caution: On a vertical wall, the magnet retains just a fraction of its perpendicular strength.
2. Plate thickness effect
*Thin steel (e.g. computer case) drastically weakens the holding force.
3. Power loss vs temp
*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) = 0.36
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 as well as cons of Nd2Fe14B magnets.
Advantages
- They virtually do not lose power, because even after ten years the performance loss is only ~1% (in laboratory conditions),
- Neodymium magnets are characterized by remarkably resistant to magnetic field loss caused by external field sources,
- Thanks to the reflective finish, the coating of Ni-Cu-Ni, gold-plated, or silver gives an clean appearance,
- They are known for high magnetic induction at the operating surface, which increases their power,
- Made from properly selected components, these magnets show impressive resistance to high heat, enabling them to function (depending on their form) at temperatures up to 230°C and above...
- Considering the ability of free molding and customization to individualized needs, NdFeB magnets can be created in a variety of forms and dimensions, which expands the range of possible applications,
- Significant place in modern technologies – they serve a role in mass storage devices, electromotive mechanisms, diagnostic systems, and technologically advanced constructions.
- Thanks to their power density, small magnets offer high operating force, with minimal size,
Cons
- To avoid cracks under impact, we suggest using special steel housings. Such a solution protects the magnet and simultaneously increases its durability.
- NdFeB magnets demagnetize when exposed to high temperatures. After reaching 80°C, many of them experience permanent weakening of strength (a factor is the shape and dimensions of the magnet). We offer magnets specially adapted to work at temperatures up to 230°C marked [AH], which are very resistant to heat
- Due to the susceptibility of magnets to corrosion in a humid environment, we advise using waterproof magnets made of rubber, plastic or other material stable to moisture, when using outdoors
- Limited possibility of making threads in the magnet and complex forms - recommended is a housing - magnetic holder.
- Health risk resulting from small fragments of magnets pose a threat, if swallowed, which is particularly important in the context of child health protection. Additionally, small components of these devices are able to disrupt the diagnostic process medical after entering the body.
- Due to neodymium price, their price exceeds standard values,
Lifting parameters
Breakaway strength of the magnet in ideal conditions – what it depends on?
- on a plate made of mild steel, optimally conducting the magnetic field
- whose thickness reaches at least 10 mm
- characterized by even structure
- without the slightest insulating layer between the magnet and steel
- during pulling in a direction perpendicular to the plane
- at ambient temperature approx. 20 degrees Celsius
Impact of factors on magnetic holding capacity in practice
- Gap between surfaces – every millimeter of distance (caused e.g. by veneer or unevenness) 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 force required to slide of the magnet along the surface is standardly many times lower (approx. 1/5 of the lifting capacity).
- Base massiveness – too thin steel causes magnetic saturation, causing part of the power to be lost to the other side.
- Steel grade – ideal substrate is high-permeability steel. Cast iron may have worse magnetic properties.
- Surface finish – ideal contact is possible only on polished steel. Rough texture create air cushions, weakening the magnet.
- Heat – NdFeB sinters have a sensitivity to temperature. At higher temperatures they lose power, and at low temperatures gain strength (up to a certain limit).
Lifting capacity was determined by applying a steel plate with a smooth surface of suitable thickness (min. 20 mm), under vertically applied force, however under parallel forces the holding force is lower. In addition, even a small distance between the magnet’s surface and the plate decreases the holding force.
H&S for magnets
Pacemakers
Patients with a ICD should keep an absolute distance from magnets. The magnetism can interfere with the operation of the life-saving device.
Threat to navigation
Note: neodymium magnets generate a field that interferes with precision electronics. Keep a separation from your phone, tablet, and navigation systems.
Allergic reactions
Medical facts indicate that nickel (the usual finish) is a common allergen. If your skin reacts to metals, prevent direct skin contact or select encased magnets.
Do not overheat magnets
Regular neodymium magnets (N-type) lose magnetization when the temperature surpasses 80°C. Damage is permanent.
Handling rules
Handle magnets with awareness. Their powerful strength can surprise even professionals. Be vigilant and do not underestimate their force.
Protect data
Equipment safety: Neodymium magnets can damage payment cards and sensitive devices (pacemakers, hearing aids, timepieces).
Combustion hazard
Machining of NdFeB material carries a risk of fire risk. Neodymium dust oxidizes rapidly with oxygen and is difficult to extinguish.
No play value
Neodymium magnets are not intended for children. Swallowing a few magnets may result in them attracting across intestines, which constitutes a severe health hazard and necessitates immediate surgery.
Beware of splinters
Despite metallic appearance, the material is brittle and cannot withstand shocks. Avoid impacts, as the magnet may shatter into sharp, dangerous pieces.
Serious injuries
Protect your hands. Two large magnets will snap together immediately with a force of massive weight, destroying everything in their path. Be careful!
