MPL 5x5x1 / N38 - lamellar magnet
lamellar magnet
Catalog no 020170
GTIN/EAN: 5906301811763
length
5 mm [±0,1 mm]
Width
5 mm [±0,1 mm]
Height
1 mm [±0,1 mm]
Weight
0.19 g
Magnetization Direction
↑ axial
Load capacity
0.34 kg / 3.30 N
Magnetic Induction
209.53 mT / 2095 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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Detailed specification - MPL 5x5x1 / N38 - lamellar magnet
Specification / characteristics - MPL 5x5x1 / N38 - lamellar magnet
| properties | values |
|---|---|
| Cat. no. | 020170 |
| GTIN/EAN | 5906301811763 |
| 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 mm [±0,1 mm] |
| Weight | 0.19 g |
| Magnetization Direction | ↑ axial |
| Load capacity ~ ? | 0.34 kg / 3.30 N |
| Magnetic Induction ~ ? | 209.53 mT / 2095 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 modeling of the magnet - technical parameters
Presented values constitute the direct effect of a engineering simulation. Values were calculated on models for the class Nd2Fe14B. Operational parameters may differ. Use these calculations as a supplementary guide for designers.
Table 1: Static force (force vs gap) - characteristics
MPL 5x5x1 / N38
| Distance (mm) | Induction (Gauss) / mT | Pull Force (kg/lbs/g/N) | Risk Status |
|---|---|---|---|
| 0 mm |
2094 Gs
209.4 mT
|
0.34 kg / 0.75 lbs
340.0 g / 3.3 N
|
low risk |
| 1 mm |
1514 Gs
151.4 mT
|
0.18 kg / 0.39 lbs
177.8 g / 1.7 N
|
low risk |
| 2 mm |
922 Gs
92.2 mT
|
0.07 kg / 0.15 lbs
65.9 g / 0.6 N
|
low risk |
| 3 mm |
543 Gs
54.3 mT
|
0.02 kg / 0.05 lbs
22.9 g / 0.2 N
|
low risk |
| 5 mm |
209 Gs
20.9 mT
|
0.00 kg / 0.01 lbs
3.4 g / 0.0 N
|
low risk |
| 10 mm |
38 Gs
3.8 mT
|
0.00 kg / 0.00 lbs
0.1 g / 0.0 N
|
low risk |
| 15 mm |
13 Gs
1.3 mT
|
0.00 kg / 0.00 lbs
0.0 g / 0.0 N
|
low risk |
| 20 mm |
6 Gs
0.6 mT
|
0.00 kg / 0.00 lbs
0.0 g / 0.0 N
|
low risk |
| 30 mm |
2 Gs
0.2 mT
|
0.00 kg / 0.00 lbs
0.0 g / 0.0 N
|
low risk |
| 50 mm |
0 Gs
0.0 mT
|
0.00 kg / 0.00 lbs
0.0 g / 0.0 N
|
low risk |
Table 2: Sliding force (wall)
MPL 5x5x1 / N38
| Distance (mm) | Friction coefficient | Pull Force (kg/lbs/g/N) |
|---|---|---|
| 0 mm | Stal (~0.2) |
0.07 kg / 0.15 lbs
68.0 g / 0.7 N
|
| 1 mm | Stal (~0.2) |
0.04 kg / 0.08 lbs
36.0 g / 0.4 N
|
| 2 mm | Stal (~0.2) |
0.01 kg / 0.03 lbs
14.0 g / 0.1 N
|
| 3 mm | Stal (~0.2) |
0.00 kg / 0.01 lbs
4.0 g / 0.0 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) - behavior on slippery surfaces
MPL 5x5x1 / N38
| Surface type | Friction coefficient / % Mocy | Max load (kg/lbs/g/N) |
|---|---|---|
| Raw steel |
µ = 0.3
30% Nominalnej Siły
|
0.10 kg / 0.22 lbs
102.0 g / 1.0 N
|
| Painted steel (standard) |
µ = 0.2
20% Nominalnej Siły
|
0.07 kg / 0.15 lbs
68.0 g / 0.7 N
|
| Oily/slippery steel |
µ = 0.1
10% Nominalnej Siły
|
0.03 kg / 0.07 lbs
34.0 g / 0.3 N
|
| Magnet with anti-slip rubber |
µ = 0.5
50% Nominalnej Siły
|
0.17 kg / 0.37 lbs
170.0 g / 1.7 N
|
Table 4: Steel thickness (saturation) - power losses
MPL 5x5x1 / N38
| Steel thickness (mm) | % power | Real pull force (kg/lbs/g/N) |
|---|---|---|
| 0.5 mm |
|
0.03 kg / 0.07 lbs
34.0 g / 0.3 N
|
| 1 mm |
|
0.09 kg / 0.19 lbs
85.0 g / 0.8 N
|
| 2 mm |
|
0.17 kg / 0.37 lbs
170.0 g / 1.7 N
|
| 3 mm |
|
0.26 kg / 0.56 lbs
255.0 g / 2.5 N
|
| 5 mm |
|
0.34 kg / 0.75 lbs
340.0 g / 3.3 N
|
| 10 mm |
|
0.34 kg / 0.75 lbs
340.0 g / 3.3 N
|
| 11 mm |
|
0.34 kg / 0.75 lbs
340.0 g / 3.3 N
|
| 12 mm |
|
0.34 kg / 0.75 lbs
340.0 g / 3.3 N
|
Table 5: Thermal stability (stability) - thermal limit
MPL 5x5x1 / N38
| Ambient temp. (°C) | Power loss | Remaining pull (kg/lbs/g/N) | Status |
|---|---|---|---|
| 20 °C | 0.0% |
0.34 kg / 0.75 lbs
340.0 g / 3.3 N
|
OK |
| 40 °C | -2.2% |
0.33 kg / 0.73 lbs
332.5 g / 3.3 N
|
OK |
| 60 °C | -4.4% |
0.33 kg / 0.72 lbs
325.0 g / 3.2 N
|
|
| 80 °C | -6.6% |
0.32 kg / 0.70 lbs
317.6 g / 3.1 N
|
|
| 100 °C | -28.8% |
0.24 kg / 0.53 lbs
242.1 g / 2.4 N
|
Table 6: Two magnets (repulsion) - field range
MPL 5x5x1 / N38
| Gap (mm) | Attraction (kg/lbs) (N-S) | Shear Force (kg/lbs/g/N) | Repulsion (kg/lbs) (N-N) |
|---|---|---|---|
| 0 mm |
0.68 kg / 1.49 lbs
3 601 Gs
|
0.10 kg / 0.22 lbs
101 g / 1.0 N
|
N/A |
| 1 mm |
0.52 kg / 1.15 lbs
3 682 Gs
|
0.08 kg / 0.17 lbs
78 g / 0.8 N
|
0.47 kg / 1.04 lbs
~0 Gs
|
| 2 mm |
0.35 kg / 0.78 lbs
3 028 Gs
|
0.05 kg / 0.12 lbs
53 g / 0.5 N
|
0.32 kg / 0.70 lbs
~0 Gs
|
| 3 mm |
0.22 kg / 0.48 lbs
2 388 Gs
|
0.03 kg / 0.07 lbs
33 g / 0.3 N
|
0.20 kg / 0.44 lbs
~0 Gs
|
| 5 mm |
0.08 kg / 0.17 lbs
1 413 Gs
|
0.01 kg / 0.03 lbs
12 g / 0.1 N
|
0.07 kg / 0.15 lbs
~0 Gs
|
| 10 mm |
0.01 kg / 0.01 lbs
417 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
77 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
6 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
3 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
2 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
1 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) (implants) - precautionary measures
MPL 5x5x1 / 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) | 1.0 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: Collisions (cracking risk) - warning
MPL 5x5x1 / N38
| Start from (mm) | Speed (km/h) | Energy (J) | Predicted outcome |
|---|---|---|---|
| 10 mm |
42.67 km/h
(11.85 m/s)
|
0.01 J | |
| 30 mm |
73.89 km/h
(20.53 m/s)
|
0.04 J | |
| 50 mm |
95.40 km/h
(26.50 m/s)
|
0.07 J | |
| 100 mm |
134.91 km/h
(37.48 m/s)
|
0.13 J |
Table 9: Surface protection spec
MPL 5x5x1 / 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 5x5x1 / N38
| Parameter | Value | SI Unit / Description |
|---|---|---|
| Magnetic Flux | 615 Mx | 6.2 µWb |
| Pc Coefficient | 0.26 | Low (Flat) |
Table 11: Submerged application
MPL 5x5x1 / N38
| Environment | Effective steel pull | Effect |
|---|---|---|
| Air (land) | 0.34 kg | Standard |
| Water (riverbed) |
0.39 kg
(+0.05 kg buoyancy gain)
|
+14.5% |
1. Wall mount (shear)
*Caution: On a vertical surface, the magnet holds just ~20% of its max power.
2. Steel saturation
*Thin steel (e.g. 0.5mm PC case) significantly reduces 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) = 0.26
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.
Elemental analysis
| 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 |
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Pros as well as cons of Nd2Fe14B magnets.
Strengths
- They have stable power, and over around 10 years their performance decreases symbolically – ~1% (in testing),
- They maintain their magnetic properties even under close interference source,
- Thanks to the glossy finish, the coating of Ni-Cu-Ni, gold, or silver-plated gives an aesthetic appearance,
- They feature high magnetic induction at the operating surface, which improves attraction properties,
- Through (adequate) combination of ingredients, they can achieve high thermal resistance, enabling functioning at temperatures approaching 230°C and above...
- Thanks to the ability of accurate molding and customization to unique needs, magnetic components can be modeled in a broad palette of geometric configurations, which amplifies use scope,
- Key role in high-tech industry – they find application in data components, drive modules, medical devices, as well as modern systems.
- Relatively small size with high pulling force – neodymium magnets offer impressive pulling force in compact dimensions, which enables their usage in miniature devices
Weaknesses
- To avoid cracks under impact, we suggest using special steel housings. Such a solution protects the magnet and simultaneously improves its durability.
- Neodymium magnets lose their force under the influence of heating. As soon as 80°C is exceeded, many of them start losing their force. Therefore, we recommend our special magnets marked [AH], which maintain durability even at temperatures up to 230°C
- Magnets exposed to a humid environment can corrode. Therefore when using outdoors, we recommend using waterproof magnets made of rubber, plastic or other material resistant to moisture
- We recommend cover - magnetic mechanism, due to difficulties in creating nuts inside the magnet and complex forms.
- Potential hazard to health – tiny shards of magnets pose a threat, when accidentally swallowed, which is particularly important in the aspect of protecting the youngest. Additionally, small components of these magnets can disrupt the diagnostic process medical when they are in the body.
- Due to expensive raw materials, their price is relatively high,
Lifting parameters
Best holding force of the magnet in ideal parameters – what affects it?
- with the contact of a yoke made of low-carbon steel, ensuring maximum field concentration
- with a cross-section no less than 10 mm
- characterized by even structure
- with zero gap (no paint)
- during pulling in a direction perpendicular to the plane
- at ambient temperature approx. 20 degrees Celsius
Lifting capacity in practice – influencing factors
- Gap between magnet and steel – every millimeter of separation (caused e.g. by veneer or dirt) significantly weakens the pulling force, often by half at just 0.5 mm.
- Force direction – remember that the magnet holds strongest perpendicularly. Under sliding down, the capacity drops drastically, often to levels of 20-30% of the maximum value.
- Wall thickness – thin material does not allow full use of the magnet. Part of the magnetic field passes through the material instead of converting into lifting capacity.
- Chemical composition of the base – low-carbon steel attracts best. Alloy steels decrease magnetic properties and holding force.
- Smoothness – full contact is obtained only on smooth steel. Any scratches and bumps create air cushions, weakening the magnet.
- Temperature influence – hot environment weakens magnetic field. Too high temperature can permanently damage the magnet.
Lifting capacity was measured by applying a polished steel plate of optimal thickness (min. 20 mm), under perpendicular pulling force, in contrast under shearing force the load capacity is reduced by as much as 75%. In addition, even a slight gap between the magnet and the plate decreases the lifting capacity.
H&S for magnets
Threat to electronics
Do not bring magnets close to a purse, laptop, or screen. The magnetic field can destroy these devices and wipe information from cards.
Impact on smartphones
Remember: neodymium magnets generate a field that interferes with precision electronics. Keep a safe distance from your mobile, device, and navigation systems.
Implant safety
Warning for patients: Strong magnetic fields disrupt electronics. Keep minimum 30 cm distance or request help to work with the magnets.
Do not overheat magnets
Watch the temperature. Exposing the magnet above 80 degrees Celsius will ruin its properties and strength.
Combustion hazard
Dust created during machining of magnets is combustible. Do not drill into magnets unless you are an expert.
Nickel allergy
Studies show that nickel (the usual finish) is a strong allergen. If your skin reacts to metals, prevent direct skin contact and opt for versions in plastic housing.
Risk of cracking
Despite metallic appearance, neodymium is delicate and cannot withstand shocks. Avoid impacts, as the magnet may shatter into hazardous fragments.
Safe operation
Before use, read the rules. Sudden snapping can destroy the magnet or injure your hand. Be predictive.
Crushing force
Large magnets can crush fingers in a fraction of a second. Under no circumstances place your hand betwixt two strong magnets.
Product not for children
Neodymium magnets are not suitable for play. Eating multiple magnets can lead to them attracting across intestines, which poses a direct threat to life and necessitates urgent medical intervention.
