MPL 15x10x2 / N38 - lamellar magnet
lamellar magnet
Catalog no 020388
GTIN/EAN: 5906301811879
length
15 mm [±0,1 mm]
Width
10 mm [±0,1 mm]
Height
2 mm [±0,1 mm]
Weight
2.25 g
Magnetization Direction
↑ axial
Load capacity
1.57 kg / 15.45 N
Magnetic Induction
180.53 mT / 1805 Gs
Coating
[NiCuNi] Nickel
1.316 ZŁ with VAT / pcs + price for transport
1.070 ZŁ net + 23% VAT / pcs
bulk discounts:
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Technical - MPL 15x10x2 / N38 - lamellar magnet
Specification / characteristics - MPL 15x10x2 / N38 - lamellar magnet
| properties | values |
|---|---|
| Cat. no. | 020388 |
| GTIN/EAN | 5906301811879 |
| Production/Distribution | Dhit sp. z o.o. |
| Country of origin | Poland / China / Germany |
| Customs code | 85059029 |
| length | 15 mm [±0,1 mm] |
| Width | 10 mm [±0,1 mm] |
| Height | 2 mm [±0,1 mm] |
| Weight | 2.25 g |
| Magnetization Direction | ↑ axial |
| Load capacity ~ ? | 1.57 kg / 15.45 N |
| Magnetic Induction ~ ? | 180.53 mT / 1805 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 - report
Presented values represent the result of a physical calculation. Results were calculated on algorithms for the class Nd2Fe14B. Actual parameters might slightly deviate from the simulation results. Treat these data as a preliminary roadmap when designing systems.
Table 1: Static force (pull vs distance) - power drop
MPL 15x10x2 / N38
| Distance (mm) | Induction (Gauss) / mT | Pull Force (kg/lbs/g/N) | Risk Status |
|---|---|---|---|
| 0 mm |
1805 Gs
180.5 mT
|
1.57 kg / 3.46 LBS
1570.0 g / 15.4 N
|
safe |
| 1 mm |
1628 Gs
162.8 mT
|
1.28 kg / 2.82 LBS
1278.3 g / 12.5 N
|
safe |
| 2 mm |
1394 Gs
139.4 mT
|
0.94 kg / 2.06 LBS
936.3 g / 9.2 N
|
safe |
| 3 mm |
1152 Gs
115.2 mT
|
0.64 kg / 1.41 LBS
639.9 g / 6.3 N
|
safe |
| 5 mm |
751 Gs
75.1 mT
|
0.27 kg / 0.60 LBS
271.5 g / 2.7 N
|
safe |
| 10 mm |
262 Gs
26.2 mT
|
0.03 kg / 0.07 LBS
33.1 g / 0.3 N
|
safe |
| 15 mm |
110 Gs
11.0 mT
|
0.01 kg / 0.01 LBS
5.8 g / 0.1 N
|
safe |
| 20 mm |
54 Gs
5.4 mT
|
0.00 kg / 0.00 LBS
1.4 g / 0.0 N
|
safe |
| 30 mm |
18 Gs
1.8 mT
|
0.00 kg / 0.00 LBS
0.2 g / 0.0 N
|
safe |
| 50 mm |
4 Gs
0.4 mT
|
0.00 kg / 0.00 LBS
0.0 g / 0.0 N
|
safe |
Table 2: Vertical hold (vertical surface)
MPL 15x10x2 / N38
| Distance (mm) | Friction coefficient | Pull Force (kg/lbs/g/N) |
|---|---|---|
| 0 mm | Stal (~0.2) |
0.31 kg / 0.69 LBS
314.0 g / 3.1 N
|
| 1 mm | Stal (~0.2) |
0.26 kg / 0.56 LBS
256.0 g / 2.5 N
|
| 2 mm | Stal (~0.2) |
0.19 kg / 0.41 LBS
188.0 g / 1.8 N
|
| 3 mm | Stal (~0.2) |
0.13 kg / 0.28 LBS
128.0 g / 1.3 N
|
| 5 mm | Stal (~0.2) |
0.05 kg / 0.12 LBS
54.0 g / 0.5 N
|
| 10 mm | Stal (~0.2) |
0.01 kg / 0.01 LBS
6.0 g / 0.1 N
|
| 15 mm | Stal (~0.2) |
0.00 kg / 0.00 LBS
2.0 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 15x10x2 / N38
| Surface type | Friction coefficient / % Mocy | Max load (kg/lbs/g/N) |
|---|---|---|
| Raw steel |
µ = 0.3
30% Nominalnej Siły
|
0.47 kg / 1.04 LBS
471.0 g / 4.6 N
|
| Painted steel (standard) |
µ = 0.2
20% Nominalnej Siły
|
0.31 kg / 0.69 LBS
314.0 g / 3.1 N
|
| Oily/slippery steel |
µ = 0.1
10% Nominalnej Siły
|
0.16 kg / 0.35 LBS
157.0 g / 1.5 N
|
| Magnet with anti-slip rubber |
µ = 0.5
50% Nominalnej Siły
|
0.79 kg / 1.73 LBS
785.0 g / 7.7 N
|
Table 4: Material efficiency (saturation) - sheet metal selection
MPL 15x10x2 / N38
| Steel thickness (mm) | % power | Real pull force (kg/lbs/g/N) |
|---|---|---|
| 0.5 mm |
|
0.16 kg / 0.35 LBS
157.0 g / 1.5 N
|
| 1 mm |
|
0.39 kg / 0.87 LBS
392.5 g / 3.9 N
|
| 2 mm |
|
0.79 kg / 1.73 LBS
785.0 g / 7.7 N
|
| 3 mm |
|
1.18 kg / 2.60 LBS
1177.5 g / 11.6 N
|
| 5 mm |
|
1.57 kg / 3.46 LBS
1570.0 g / 15.4 N
|
| 10 mm |
|
1.57 kg / 3.46 LBS
1570.0 g / 15.4 N
|
| 11 mm |
|
1.57 kg / 3.46 LBS
1570.0 g / 15.4 N
|
| 12 mm |
|
1.57 kg / 3.46 LBS
1570.0 g / 15.4 N
|
Table 5: Working in heat (stability) - thermal limit
MPL 15x10x2 / N38
| Ambient temp. (°C) | Power loss | Remaining pull (kg/lbs/g/N) | Status |
|---|---|---|---|
| 20 °C | 0.0% |
1.57 kg / 3.46 LBS
1570.0 g / 15.4 N
|
OK |
| 40 °C | -2.2% |
1.54 kg / 3.39 LBS
1535.5 g / 15.1 N
|
OK |
| 60 °C | -4.4% |
1.50 kg / 3.31 LBS
1500.9 g / 14.7 N
|
|
| 80 °C | -6.6% |
1.47 kg / 3.23 LBS
1466.4 g / 14.4 N
|
|
| 100 °C | -28.8% |
1.12 kg / 2.46 LBS
1117.8 g / 11.0 N
|
Table 6: Two magnets (repulsion) - forces in the system
MPL 15x10x2 / N38
| Gap (mm) | Attraction (kg/lbs) (N-S) | Shear Force (kg/lbs/g/N) | Repulsion (kg/lbs) (N-N) |
|---|---|---|---|
| 0 mm |
3.01 kg / 6.64 LBS
3 196 Gs
|
0.45 kg / 1.00 LBS
452 g / 4.4 N
|
N/A |
| 1 mm |
2.76 kg / 6.09 LBS
3 456 Gs
|
0.41 kg / 0.91 LBS
414 g / 4.1 N
|
2.49 kg / 5.48 LBS
~0 Gs
|
| 2 mm |
2.45 kg / 5.41 LBS
3 257 Gs
|
0.37 kg / 0.81 LBS
368 g / 3.6 N
|
2.21 kg / 4.87 LBS
~0 Gs
|
| 3 mm |
2.12 kg / 4.68 LBS
3 029 Gs
|
0.32 kg / 0.70 LBS
318 g / 3.1 N
|
1.91 kg / 4.21 LBS
~0 Gs
|
| 5 mm |
1.49 kg / 3.30 LBS
2 543 Gs
|
0.22 kg / 0.49 LBS
224 g / 2.2 N
|
1.35 kg / 2.97 LBS
~0 Gs
|
| 10 mm |
0.52 kg / 1.15 LBS
1 501 Gs
|
0.08 kg / 0.17 LBS
78 g / 0.8 N
|
0.47 kg / 1.03 LBS
~0 Gs
|
| 20 mm |
0.06 kg / 0.14 LBS
524 Gs
|
0.01 kg / 0.02 LBS
10 g / 0.1 N
|
0.06 kg / 0.13 LBS
~0 Gs
|
| 50 mm |
0.00 kg / 0.00 LBS
60 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
37 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
24 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
16 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
12 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
9 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 15x10x2 / N38
| Object / Device | Limit (Gauss) / mT | Safe distance |
|---|---|---|
| Pacemaker | 5 Gs (0.5 mT) | 5.0 cm |
| Hearing aid | 10 Gs (1.0 mT) | 4.0 cm |
| Mechanical watch | 20 Gs (2.0 mT) | 3.0 cm |
| Mobile device | 40 Gs (4.0 mT) | 2.5 cm |
| Remote | 50 Gs (5.0 mT) | 2.5 cm |
| Payment card | 400 Gs (40.0 mT) | 1.0 cm |
| HDD hard drive | 600 Gs (60.0 mT) | 1.0 cm |
Table 8: Dynamics (cracking risk) - warning
MPL 15x10x2 / N38
| Start from (mm) | Speed (km/h) | Energy (J) | Predicted outcome |
|---|---|---|---|
| 10 mm |
26.99 km/h
(7.50 m/s)
|
0.06 J | |
| 30 mm |
46.15 km/h
(12.82 m/s)
|
0.18 J | |
| 50 mm |
59.57 km/h
(16.55 m/s)
|
0.31 J | |
| 100 mm |
84.24 km/h
(23.40 m/s)
|
0.62 J |
Table 9: Surface protection spec
MPL 15x10x2 / 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 15x10x2 / N38
| Parameter | Value | SI Unit / Description |
|---|---|---|
| Magnetic Flux | 3 194 Mx | 31.9 µWb |
| Pc Coefficient | 0.22 | Low (Flat) |
Table 11: Submerged application
MPL 15x10x2 / N38
| Environment | Effective steel pull | Effect |
|---|---|---|
| Air (land) | 1.57 kg | Standard |
| Water (riverbed) |
1.80 kg
(+0.23 kg buoyancy gain)
|
+14.5% |
1. Vertical hold
*Caution: On a vertical surface, the magnet retains just a fraction of its nominal pull.
2. Steel thickness impact
*Thin metal sheet (e.g. 0.5mm PC case) significantly 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) = 0.22
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.
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% |
Sustainability
| recyclability (EoL) | 100% |
| recycled raw materials | ~10% (pre-cons) |
| carbon footprint | low / zredukowany |
| waste code (EWC) | 16 02 16 |
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Strengths as well as weaknesses of rare earth magnets.
Strengths
- They do not lose power, even during nearly 10 years – the reduction in power is only ~1% (theoretically),
- They are resistant to demagnetization induced by external magnetic fields,
- By covering with a smooth coating of gold, the element acquires an professional look,
- They show high magnetic induction at the operating surface, which affects their effectiveness,
- Due to their durability and thermal resistance, neodymium magnets are capable of operate (depending on the shape) even at high temperatures reaching 230°C or more...
- Thanks to the option of free forming and customization to unique solutions, neodymium magnets can be manufactured in a broad palette of forms and dimensions, which amplifies use scope,
- Huge importance in modern industrial fields – they serve a role in HDD drives, drive modules, diagnostic systems, and technologically advanced constructions.
- Thanks to efficiency per cm³, small magnets offer high operating force, occupying minimum space,
Disadvantages
- Susceptibility to cracking is one of their disadvantages. Upon intense impact they can fracture. We advise keeping them in a strong case, which not only secures them against impacts but also raises their durability
- NdFeB magnets lose force when exposed to high temperatures. After reaching 80°C, many of them experience permanent weakening of power (a factor is the shape as well as dimensions of the magnet). We offer magnets specially adapted to work at temperatures up to 230°C marked [AH], which are extremely resistant to heat
- When exposed to humidity, magnets start to rust. For applications outside, it is recommended to use protective magnets, such as magnets in rubber or plastics, which prevent oxidation and corrosion.
- We recommend cover - magnetic mechanism, due to difficulties in creating threads inside the magnet and complex forms.
- Health risk to health – tiny shards of magnets pose a threat, if swallowed, which becomes key in the context of child health protection. Additionally, small elements of these devices can disrupt the diagnostic process medical in case of swallowing.
- 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
Magnetic strength at its maximum – what contributes to it?
- on a plate made of structural steel, optimally conducting the magnetic flux
- whose thickness is min. 10 mm
- with an ground contact surface
- without any insulating layer between the magnet and steel
- for force acting at a right angle (pull-off, not shear)
- at ambient temperature approx. 20 degrees Celsius
What influences lifting capacity in practice
- Gap (betwixt the magnet and the plate), because even a very small distance (e.g. 0.5 mm) leads to a decrease in force by up to 50% (this also applies to varnish, corrosion or dirt).
- Loading method – declared lifting capacity refers to pulling vertically. When applying parallel force, the magnet holds much less (often approx. 20-30% of maximum force).
- Substrate thickness – for full efficiency, the steel must be adequately massive. Paper-thin metal limits the lifting capacity (the magnet "punches through" it).
- Steel grade – ideal substrate is pure iron steel. Hardened steels may have worse magnetic properties.
- Plate texture – ground elements ensure maximum contact, which increases force. Uneven metal reduce efficiency.
- Operating temperature – NdFeB sinters have a negative temperature coefficient. When it is hot they are weaker, and in frost they can be stronger (up to a certain limit).
Lifting capacity was assessed with the use of a polished steel plate of suitable thickness (min. 20 mm), under perpendicular detachment force, in contrast under attempts to slide the magnet the lifting capacity is smaller. Additionally, even a minimal clearance between the magnet’s surface and the plate reduces the lifting capacity.
Warnings
Protective goggles
Despite metallic appearance, the material is brittle and cannot withstand shocks. Do not hit, as the magnet may shatter into hazardous fragments.
Combustion hazard
Dust generated during cutting of magnets is combustible. Avoid drilling into magnets unless you are an expert.
Avoid contact if allergic
Warning for allergy sufferers: The Ni-Cu-Ni coating contains nickel. If an allergic reaction occurs, cease working with magnets and use protective gear.
Hand protection
Pinching hazard: The attraction force is so immense that it can cause blood blisters, pinching, and even bone fractures. Protective gloves are recommended.
Danger to pacemakers
Warning for patients: Strong magnetic fields affect medical devices. Maintain at least 30 cm distance or ask another person to handle the magnets.
Magnetic interference
GPS units and smartphones are extremely sensitive to magnetic fields. Close proximity with a strong magnet can ruin the internal compass in your phone.
Handling guide
Before use, check safety instructions. Uncontrolled attraction can break the magnet or hurt your hand. Think ahead.
Keep away from children
Only for adults. Small elements can be swallowed, leading to serious injuries. Store away from kids and pets.
Thermal limits
Regular neodymium magnets (grade N) undergo demagnetization when the temperature exceeds 80°C. Damage is permanent.
Keep away from computers
Very strong magnetic fields can corrupt files on payment cards, HDDs, and storage devices. Maintain a gap of min. 10 cm.
