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
- Coating
- [NiCuNi] Nickel
How we measure these parameters — certificates and measurements
0.590 zł net / pcs
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bulk discounts:
Need more?Frequently asked questions
How much will a block magnet really hold?
What is the maximum working temperature?
What safety factor should I allow?
Engineering report for this magnet
Full PDF analysis: pull and shear force, effect of distance, temperature and plate thickness, safety distances and the demagnetization curve.
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Physical properties - 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 |
|---|---|---|
| Remanence Br ? | 12.2-12.6 | kGs |
| Remanence Br ? | 1220-1260 | mT |
| Coercivity bHc ? | 10.8-11.5 | kOe |
| Coercivity bHc ? | 860-915 | kA/m |
| Intrinsic coercivity iHc | ≥ 12 | kOe |
| Intrinsic coercivity iHc | ≥ 955 | kA/m |
| Energy product BHmax ? | 36-38 | BH max MGOe |
| Energy product BHmax ? | 287-303 | BH max KJ/m |
| Maximum working 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 | 310 | °C |
| Curie Temperature TF | 590 | °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 assembly - technical parameters
These values represent the direct effect of a physical analysis. Values were calculated on algorithms for the class Nd2Fe14B. Actual conditions might slightly deviate from the simulation results. Use these calculations as a supplementary guide when designing systems.
Table 1: Static pull force (pull vs gap) - 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
|
low risk |
| 1 mm |
3221 Gs
322.1 mT
|
0.67 kg / 1.48 lbs
670.2 g / 6.6 N
|
low risk |
| 2 mm |
1942 Gs
194.2 mT
|
0.24 kg / 0.54 lbs
243.7 g / 2.4 N
|
low risk |
| 3 mm |
1274 Gs
127.4 mT
|
0.10 kg / 0.23 lbs
104.9 g / 1.0 N
|
low risk |
| 5 mm |
652 Gs
65.2 mT
|
0.03 kg / 0.06 lbs
27.5 g / 0.3 N
|
low risk |
| 10 mm |
195 Gs
19.5 mT
|
0.00 kg / 0.01 lbs
2.5 g / 0.0 N
|
low risk |
| 15 mm |
81 Gs
8.1 mT
|
0.00 kg / 0.00 lbs
0.4 g / 0.0 N
|
low risk |
| 20 mm |
41 Gs
4.1 mT
|
0.00 kg / 0.00 lbs
0.1 g / 0.0 N
|
low risk |
| 30 mm |
14 Gs
1.4 mT
|
0.00 kg / 0.00 lbs
0.0 g / 0.0 N
|
low risk |
| 50 mm |
4 Gs
0.4 mT
|
0.00 kg / 0.00 lbs
0.0 g / 0.0 N
|
low risk |
Table 2: Shear capacity (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) - vertical pull
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 (substrate influence) - 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 resistance (material behavior) - thermal limit
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 (repulsion) - field range
MPL 15x3x6 / N38
| Gap (mm) | Attraction (kg/lbs) (N-S) | Shear Strength (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: Protective zones (implants) - precautionary measures
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 |
| Mechanical watch | 20 Gs (2.0 mT) | 3.0 cm |
| Phone / Smartphone | 40 Gs (4.0 mT) | 2.5 cm |
| Car key | 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) - warning
MPL 15x3x6 / N38
| Start from (mm) | Speed (km/h) | Energy (J) | Predicted outcome |
|---|---|---|---|
| 10 mm |
15.60 km/h
(4.33 m/s)
|
0.02 J | |
| 30 mm |
15.63 km/h
(4.34 m/s)
|
0.02 J | |
| 50 mm |
15.63 km/h
(4.34 m/s)
|
0.02 J | |
| 100 mm |
15.63 km/h
(4.34 m/s)
|
0.02 J |
Table 9: Surface protection spec
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: Construction 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: Submerged application
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. Wall mount (shear)
*Caution: On a vertical surface, the magnet holds just approx. 20-30% of its perpendicular strength.
2. Steel saturation
*Thin metal sheet (e.g. computer case) significantly weakens the holding force.
3. Temperature resistance
*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) = 0.79
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.
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% |
Ecology and recycling (GPSR)
| recyclability (EoL) | 100% |
| recycled raw materials | ~10% (pre-cons) |
| carbon footprint | low / zredukowany |
| waste code (EWC) | 16 02 16 |
Other offers
Strengths as well as weaknesses of Nd2Fe14B magnets.
Pros
- They have stable power, and over around 10 years their attraction force decreases symbolically – ~1% (in testing),
- They are noted for resistance to demagnetization induced by external field influence,
- A magnet with a shiny gold surface has an effective appearance,
- The surface of neodymium magnets generates a maximum magnetic field – this is a distinguishing feature,
- Through (appropriate) combination of ingredients, they can achieve high thermal strength, enabling action at temperatures reaching 230°C and above...
- Thanks to flexibility in shaping and the ability to modify to specific needs,
- Wide application in modern technologies – they are commonly used in computer drives, drive modules, diagnostic systems, as well as industrial machines.
- Thanks to concentrated force, small magnets offer high operating force, with minimal size,
Disadvantages
- They are fragile upon heavy impacts. To avoid cracks, it is worth protecting magnets using a steel holder. Such protection not only protects the magnet but also increases its resistance to damage
- Neodymium 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 extremely resistant to heat
- Magnets exposed to a humid environment can corrode. Therefore during using outdoors, we recommend using water-impermeable magnets made of rubber, plastic or other material protecting against moisture
- Due to limitations in creating threads and complicated shapes in magnets, we propose using cover - magnetic holder.
- Health risk resulting from small fragments of magnets are risky, if swallowed, which is particularly important in the context of child health protection. Furthermore, tiny parts of these magnets are able to disrupt the diagnostic process medical in case of swallowing.
- Higher cost of purchase is a significant factor to consider compared to ceramic magnets, especially in budget applications
Pull force analysis
Best holding force of the magnet in ideal parameters – what contributes to it?
- on a base made of structural steel, effectively closing the magnetic field
- with a thickness no less than 10 mm
- with a plane cleaned and smooth
- without any air gap between the magnet and steel
- under axial force vector (90-degree angle)
- at temperature room level
Magnet lifting force in use – key factors
- Air gap (betwixt the magnet and the metal), since even a microscopic distance (e.g. 0.5 mm) can cause a reduction in force by up to 50% (this also applies to paint, rust or debris).
- Force direction – remember that the magnet holds strongest perpendicularly. Under sliding down, the capacity drops significantly, often to levels of 20-30% of the maximum value.
- Steel thickness – insufficiently thick steel causes magnetic saturation, causing part of the power to be wasted into the air.
- Material type – the best choice is high-permeability steel. Stainless steels may attract less.
- Surface condition – ground elements guarantee perfect abutment, which improves force. Rough surfaces reduce efficiency.
- Operating temperature – neodymium magnets have a sensitivity to temperature. At higher temperatures they lose power, and in frost gain strength (up to a certain limit).
Holding force was measured on a smooth steel plate of 20 mm thickness, when the force acted perpendicularly, in contrast under attempts to slide the magnet the holding force is lower. Additionally, even a minimal clearance between the magnet’s surface and the plate reduces the lifting capacity.
Safe handling of neodymium magnets
Hand protection
Danger of trauma: The pulling power is so immense that it can result in hematomas, pinching, and broken bones. Use thick gloves.
Magnets are brittle
Despite metallic appearance, the material is delicate and not impact-resistant. Avoid impacts, as the magnet may shatter into sharp, dangerous pieces.
Operating temperature
Avoid heat. NdFeB magnets are sensitive to temperature. If you need resistance above 80°C, inquire about special high-temperature series (H, SH, UH).
Handling guide
Exercise caution. Rare earth magnets attract from a distance and snap with huge force, often quicker than you can react.
Compass and GPS
Note: neodymium magnets produce a field that interferes with sensitive sensors. Keep a safe distance from your phone, device, and navigation systems.
Metal Allergy
Warning for allergy sufferers: The Ni-Cu-Ni coating consists of nickel. If an allergic reaction happens, immediately stop handling magnets and wear gloves.
Pacemakers
Medical warning: Neodymium magnets can turn off pacemakers and defibrillators. Do not approach if you have medical devices.
Product not for children
Strictly store magnets out of reach of children. Choking hazard is high, and the effects of magnets clamping inside the body are very dangerous.
Dust explosion hazard
Machining of NdFeB material poses a fire risk. Magnetic powder reacts violently with oxygen and is difficult to extinguish.
Threat to electronics
Avoid bringing magnets close to a purse, laptop, or TV. The magnetic field can destroy these devices and erase data from cards.
