MPL 15x3x6 / N38 - lamellar magnet
lamellar magnet
Catalog no 020122
GTIN/EAN: 5906301811282
length
15 mm [±0,1 mm]
Width
3 mm [±0,1 mm]
Height
6 mm [±0,1 mm]
Weight
2.03 g
Magnetization Direction
↑ axial
Load capacity
1.90 kg / 18.68 N
Magnetic Induction
543.23 mT / 5432 Gs
Coating
[NiCuNi] Nickel
0.726 ZŁ with VAT / pcs + price for transport
0.590 ZŁ net + 23% VAT / pcs
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Detailed specification - MPL 15x3x6 / N38 - lamellar magnet
Specification / characteristics - MPL 15x3x6 / N38 - lamellar magnet
| properties | values |
|---|---|
| Cat. no. | 020122 |
| GTIN/EAN | 5906301811282 |
| Production/Distribution | Dhit sp. z o.o. |
| Country of origin | Poland / China / Germany |
| Customs code | 85059029 |
| length | 15 mm [±0,1 mm] |
| Width | 3 mm [±0,1 mm] |
| Height | 6 mm [±0,1 mm] |
| Weight | 2.03 g |
| Magnetization Direction | ↑ axial |
| Load capacity ~ ? | 1.90 kg / 18.68 N |
| Magnetic Induction ~ ? | 543.23 mT / 5432 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 analysis of the magnet - technical parameters
The following data constitute the result of a physical calculation. Results are based on models for the material Nd2Fe14B. Actual parameters might slightly differ from theoretical values. Please consider these calculations as a supplementary guide during assembly planning.
Table 1: Static force (force vs distance) - power drop
MPL 15x3x6 / N38
| Distance (mm) | Induction (Gauss) / mT | Pull Force (kg/lbs/g/N) | Risk Status |
|---|---|---|---|
| 0 mm |
5423 Gs
542.3 mT
|
1.90 kg / 4.19 lbs
1900.0 g / 18.6 N
|
safe |
| 1 mm |
3221 Gs
322.1 mT
|
0.67 kg / 1.48 lbs
670.2 g / 6.6 N
|
safe |
| 2 mm |
1942 Gs
194.2 mT
|
0.24 kg / 0.54 lbs
243.7 g / 2.4 N
|
safe |
| 3 mm |
1274 Gs
127.4 mT
|
0.10 kg / 0.23 lbs
104.9 g / 1.0 N
|
safe |
| 5 mm |
652 Gs
65.2 mT
|
0.03 kg / 0.06 lbs
27.5 g / 0.3 N
|
safe |
| 10 mm |
195 Gs
19.5 mT
|
0.00 kg / 0.01 lbs
2.5 g / 0.0 N
|
safe |
| 15 mm |
81 Gs
8.1 mT
|
0.00 kg / 0.00 lbs
0.4 g / 0.0 N
|
safe |
| 20 mm |
41 Gs
4.1 mT
|
0.00 kg / 0.00 lbs
0.1 g / 0.0 N
|
safe |
| 30 mm |
14 Gs
1.4 mT
|
0.00 kg / 0.00 lbs
0.0 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: Shear force (vertical surface)
MPL 15x3x6 / N38
| Distance (mm) | Friction coefficient | Pull Force (kg/lbs/g/N) |
|---|---|---|
| 0 mm | Stal (~0.2) |
0.38 kg / 0.84 lbs
380.0 g / 3.7 N
|
| 1 mm | Stal (~0.2) |
0.13 kg / 0.30 lbs
134.0 g / 1.3 N
|
| 2 mm | Stal (~0.2) |
0.05 kg / 0.11 lbs
48.0 g / 0.5 N
|
| 3 mm | Stal (~0.2) |
0.02 kg / 0.04 lbs
20.0 g / 0.2 N
|
| 5 mm | Stal (~0.2) |
0.01 kg / 0.01 lbs
6.0 g / 0.1 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: Wall mounting (shearing) - behavior on slippery surfaces
MPL 15x3x6 / N38
| Surface type | Friction coefficient / % Mocy | Max load (kg/lbs/g/N) |
|---|---|---|
| Raw steel |
µ = 0.3
30% Nominalnej Siły
|
0.57 kg / 1.26 lbs
570.0 g / 5.6 N
|
| Painted steel (standard) |
µ = 0.2
20% Nominalnej Siły
|
0.38 kg / 0.84 lbs
380.0 g / 3.7 N
|
| Oily/slippery steel |
µ = 0.1
10% Nominalnej Siły
|
0.19 kg / 0.42 lbs
190.0 g / 1.9 N
|
| Magnet with anti-slip rubber |
µ = 0.5
50% Nominalnej Siły
|
0.95 kg / 2.09 lbs
950.0 g / 9.3 N
|
Table 4: Material efficiency (saturation) - sheet metal selection
MPL 15x3x6 / N38
| Steel thickness (mm) | % power | Real pull force (kg/lbs/g/N) |
|---|---|---|
| 0.5 mm |
|
0.19 kg / 0.42 lbs
190.0 g / 1.9 N
|
| 1 mm |
|
0.48 kg / 1.05 lbs
475.0 g / 4.7 N
|
| 2 mm |
|
0.95 kg / 2.09 lbs
950.0 g / 9.3 N
|
| 3 mm |
|
1.42 kg / 3.14 lbs
1425.0 g / 14.0 N
|
| 5 mm |
|
1.90 kg / 4.19 lbs
1900.0 g / 18.6 N
|
| 10 mm |
|
1.90 kg / 4.19 lbs
1900.0 g / 18.6 N
|
| 11 mm |
|
1.90 kg / 4.19 lbs
1900.0 g / 18.6 N
|
| 12 mm |
|
1.90 kg / 4.19 lbs
1900.0 g / 18.6 N
|
Table 5: Thermal stability (stability) - resistance threshold
MPL 15x3x6 / N38
| Ambient temp. (°C) | Power loss | Remaining pull (kg/lbs/g/N) | Status |
|---|---|---|---|
| 20 °C | 0.0% |
1.90 kg / 4.19 lbs
1900.0 g / 18.6 N
|
OK |
| 40 °C | -2.2% |
1.86 kg / 4.10 lbs
1858.2 g / 18.2 N
|
OK |
| 60 °C | -4.4% |
1.82 kg / 4.00 lbs
1816.4 g / 17.8 N
|
OK |
| 80 °C | -6.6% |
1.77 kg / 3.91 lbs
1774.6 g / 17.4 N
|
|
| 100 °C | -28.8% |
1.35 kg / 2.98 lbs
1352.8 g / 13.3 N
|
Table 6: Two magnets (attraction) - field collision
MPL 15x3x6 / N38
| Gap (mm) | Attraction (kg/lbs) (N-S) | Shear Force (kg/lbs/g/N) | Repulsion (kg/lbs) (N-N) |
|---|---|---|---|
| 0 mm |
8.16 kg / 17.99 lbs
5 914 Gs
|
1.22 kg / 2.70 lbs
1224 g / 12.0 N
|
N/A |
| 1 mm |
4.96 kg / 10.94 lbs
8 460 Gs
|
0.74 kg / 1.64 lbs
745 g / 7.3 N
|
4.47 kg / 9.85 lbs
~0 Gs
|
| 2 mm |
2.88 kg / 6.34 lbs
6 441 Gs
|
0.43 kg / 0.95 lbs
432 g / 4.2 N
|
2.59 kg / 5.71 lbs
~0 Gs
|
| 3 mm |
1.70 kg / 3.75 lbs
4 950 Gs
|
0.25 kg / 0.56 lbs
255 g / 2.5 N
|
1.53 kg / 3.37 lbs
~0 Gs
|
| 5 mm |
0.67 kg / 1.48 lbs
3 116 Gs
|
0.10 kg / 0.22 lbs
101 g / 1.0 N
|
0.61 kg / 1.34 lbs
~0 Gs
|
| 10 mm |
0.12 kg / 0.26 lbs
1 304 Gs
|
0.02 kg / 0.04 lbs
18 g / 0.2 N
|
0.11 kg / 0.23 lbs
~0 Gs
|
| 20 mm |
0.01 kg / 0.02 lbs
391 Gs
|
0.00 kg / 0.00 lbs
2 g / 0.0 N
|
0.01 kg / 0.02 lbs
~0 Gs
|
| 50 mm |
0.00 kg / 0.00 lbs
46 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
29 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
19 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
13 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
9 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
7 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) - warnings
MPL 15x3x6 / N38
| Object / Device | Limit (Gauss) / mT | Safe distance |
|---|---|---|
| Pacemaker | 5 Gs (0.5 mT) | 4.5 cm |
| Hearing aid | 10 Gs (1.0 mT) | 3.5 cm |
| Timepiece | 20 Gs (2.0 mT) | 3.0 cm |
| Phone / Smartphone | 40 Gs (4.0 mT) | 2.5 cm |
| Remote | 50 Gs (5.0 mT) | 2.0 cm |
| Payment card | 400 Gs (40.0 mT) | 1.0 cm |
| HDD hard drive | 600 Gs (60.0 mT) | 1.0 cm |
Table 8: Collisions (kinetic energy) - collision effects
MPL 15x3x6 / N38
| Start from (mm) | Speed (km/h) | Energy (J) | Predicted outcome |
|---|---|---|---|
| 10 mm |
30.88 km/h
(8.58 m/s)
|
0.07 J | |
| 30 mm |
53.44 km/h
(14.84 m/s)
|
0.22 J | |
| 50 mm |
68.99 km/h
(19.16 m/s)
|
0.37 J | |
| 100 mm |
97.57 km/h
(27.10 m/s)
|
0.75 J |
Table 9: Coating parameters (durability)
MPL 15x3x6 / 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 15x3x6 / N38
| Parameter | Value | SI Unit / Description |
|---|---|---|
| Magnetic Flux | 2 390 Mx | 23.9 µWb |
| Pc Coefficient | 0.79 | High (Stable) |
Table 11: Underwater work (magnet fishing)
MPL 15x3x6 / N38
| Environment | Effective steel pull | Effect |
|---|---|---|
| Air (land) | 1.90 kg | Standard |
| Water (riverbed) |
2.18 kg
(+0.28 kg buoyancy gain)
|
+14.5% |
1. Vertical hold
*Caution: On a vertical surface, the magnet retains merely ~20% of its nominal pull.
2. Plate thickness effect
*Thin steel (e.g. computer case) severely reduces the holding force.
3. Power loss vs temp
*For N38 material, the safety limit is 80°C.
4. Demagnetization curve and operating point (B-H)
chart generated for the permeance coefficient Pc (Permeance Coefficient) = 0.79
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.
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% |
Environmental data
| recyclability (EoL) | 100% |
| recycled raw materials | ~10% (pre-cons) |
| carbon footprint | low / zredukowany |
| waste code (EWC) | 16 02 16 |
See also offers
Advantages as well as disadvantages of neodymium magnets.
Pros
- They have constant strength, and over nearly ten years their attraction force decreases symbolically – ~1% (in testing),
- They show high resistance to demagnetization induced by presence of other magnetic fields,
- Thanks to the metallic finish, the coating of nickel, gold, or silver-plated gives an visually attractive appearance,
- They are known for high magnetic induction at the operating surface, which increases their power,
- Neodymium magnets are characterized by extremely high magnetic induction on the magnet surface and can work (depending on the form) even at a temperature of 230°C or more...
- Due to the ability of flexible shaping and customization to individualized projects, neodymium magnets can be manufactured in a variety of shapes and sizes, which increases their versatility,
- Key role in high-tech industry – they are utilized in computer drives, electromotive mechanisms, advanced medical instruments, and industrial machines.
- Compactness – despite small sizes they offer powerful magnetic field, making them ideal for precision applications
Cons
- Susceptibility to cracking is one of their disadvantages. Upon intense impact they can fracture. We recommend keeping them in a strong case, which not only protects them against impacts but also increases their durability
- When exposed to high temperature, neodymium magnets experience a drop in strength. 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
- When exposed to humidity, magnets usually rust. To use them in conditions outside, it is recommended to use protective magnets, such as magnets in rubber or plastics, which secure oxidation and corrosion.
- Due to limitations in producing nuts and complex forms in magnets, we recommend using cover - magnetic holder.
- Health risk resulting from small fragments of magnets are risky, when accidentally swallowed, which becomes key in the context of child safety. Furthermore, small components of these magnets are able to disrupt the diagnostic process medical after entering the body.
- With mass production the cost of neodymium magnets can be a barrier,
Holding force characteristics
Maximum magnetic pulling force – what affects it?
- using a base made of mild steel, serving as a circuit closing element
- whose thickness reaches at least 10 mm
- with a plane free of scratches
- with direct contact (without impurities)
- under vertical force direction (90-degree angle)
- at ambient temperature room level
Determinants of practical lifting force of a magnet
- Distance – existence of any layer (paint, tape, air) acts as an insulator, which lowers power steeply (even by 50% at 0.5 mm).
- Angle of force application – highest force is obtained only during pulling at a 90° angle. The shear force of the magnet along the plate is typically several times lower (approx. 1/5 of the lifting capacity).
- Wall thickness – thin material does not allow full use of the magnet. Magnetic flux penetrates through instead of converting into lifting capacity.
- Steel grade – the best choice is pure iron steel. Hardened steels may attract less.
- Smoothness – full contact is obtained only on smooth steel. Any scratches and bumps reduce the real contact area, reducing force.
- Temperature – heating the magnet results in weakening of induction. Check the thermal limit for a given model.
Lifting capacity was assessed with the use of a polished steel plate of optimal thickness (min. 20 mm), under perpendicular detachment force, however under attempts to slide the magnet the holding force is lower. In addition, even a small distance between the magnet and the plate decreases the lifting capacity.
H&S for magnets
Protect data
Device Safety: Neodymium magnets can ruin payment cards and sensitive devices (heart implants, medical aids, mechanical watches).
Fire risk
Dust generated during cutting of magnets is combustible. Do not drill into magnets unless you are an expert.
Finger safety
Large magnets can break fingers in a fraction of a second. Never put your hand betwixt two attracting surfaces.
Life threat
For implant holders: Strong magnetic fields affect electronics. Keep at least 30 cm distance or ask another person to handle the magnets.
Allergic reactions
Studies show that nickel (the usual finish) is a common allergen. For allergy sufferers, refrain from touching magnets with bare hands and opt for versions in plastic housing.
Safe operation
Exercise caution. Neodymium magnets act from a distance and connect with huge force, often quicker than you can react.
Magnets are brittle
Beware of splinters. Magnets can explode upon violent connection, ejecting sharp fragments into the air. We recommend safety glasses.
Precision electronics
Navigation devices and smartphones are extremely sensitive to magnetic fields. Direct contact with a powerful NdFeB magnet can permanently damage the sensors in your phone.
Maximum temperature
Monitor thermal conditions. Exposing the magnet above 80 degrees Celsius will permanently weaken its properties and strength.
Swallowing risk
NdFeB magnets are not intended for children. Accidental ingestion of multiple magnets may result in them attracting across intestines, which poses a critical condition and requires urgent medical intervention.
