MPL 6x6x6 / N38 - lamellar magnet
lamellar magnet
Catalog no 020175
GTIN/EAN: 5906301811817
length
6 mm [±0,1 mm]
Width
6 mm [±0,1 mm]
Height
6 mm [±0,1 mm]
Weight
1.62 g
Magnetization Direction
↑ axial
Load capacity
1.38 kg / 13.54 N
Magnetic Induction
539.50 mT / 5395 Gs
Coating
[NiCuNi] Nickel
0.898 ZŁ with VAT / pcs + price for transport
0.730 ZŁ net + 23% VAT / pcs
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Product card - MPL 6x6x6 / N38 - lamellar magnet
Specification / characteristics - MPL 6x6x6 / N38 - lamellar magnet
| properties | values |
|---|---|
| Cat. no. | 020175 |
| GTIN/EAN | 5906301811817 |
| Production/Distribution | Dhit sp. z o.o. |
| Country of origin | Poland / China / Germany |
| Customs code | 85059029 |
| length | 6 mm [±0,1 mm] |
| Width | 6 mm [±0,1 mm] |
| Height | 6 mm [±0,1 mm] |
| Weight | 1.62 g |
| Magnetization Direction | ↑ axial |
| Load capacity ~ ? | 1.38 kg / 13.54 N |
| Magnetic Induction ~ ? | 539.50 mT / 5395 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 assembly - technical parameters
The following values represent the outcome of a physical calculation. Results rely on models for the class Nd2Fe14B. Actual parameters may differ. Please consider these data as a supplementary guide when designing systems.
Table 1: Static pull force (pull vs distance) - power drop
MPL 6x6x6 / N38
| Distance (mm) | Induction (Gauss) / mT | Pull Force (kg/lbs/g/N) | Risk Status |
|---|---|---|---|
| 0 mm |
5389 Gs
538.9 mT
|
1.38 kg / 3.04 pounds
1380.0 g / 13.5 N
|
safe |
| 1 mm |
3805 Gs
380.5 mT
|
0.69 kg / 1.52 pounds
688.0 g / 6.7 N
|
safe |
| 2 mm |
2530 Gs
253.0 mT
|
0.30 kg / 0.67 pounds
304.3 g / 3.0 N
|
safe |
| 3 mm |
1671 Gs
167.1 mT
|
0.13 kg / 0.29 pounds
132.7 g / 1.3 N
|
safe |
| 5 mm |
784 Gs
78.4 mT
|
0.03 kg / 0.06 pounds
29.2 g / 0.3 N
|
safe |
| 10 mm |
192 Gs
19.2 mT
|
0.00 kg / 0.00 pounds
1.8 g / 0.0 N
|
safe |
| 15 mm |
73 Gs
7.3 mT
|
0.00 kg / 0.00 pounds
0.3 g / 0.0 N
|
safe |
| 20 mm |
35 Gs
3.5 mT
|
0.00 kg / 0.00 pounds
0.1 g / 0.0 N
|
safe |
| 30 mm |
12 Gs
1.2 mT
|
0.00 kg / 0.00 pounds
0.0 g / 0.0 N
|
safe |
| 50 mm |
3 Gs
0.3 mT
|
0.00 kg / 0.00 pounds
0.0 g / 0.0 N
|
safe |
Table 2: Slippage load (vertical surface)
MPL 6x6x6 / N38
| Distance (mm) | Friction coefficient | Pull Force (kg/lbs/g/N) |
|---|---|---|
| 0 mm | Stal (~0.2) |
0.28 kg / 0.61 pounds
276.0 g / 2.7 N
|
| 1 mm | Stal (~0.2) |
0.14 kg / 0.30 pounds
138.0 g / 1.4 N
|
| 2 mm | Stal (~0.2) |
0.06 kg / 0.13 pounds
60.0 g / 0.6 N
|
| 3 mm | Stal (~0.2) |
0.03 kg / 0.06 pounds
26.0 g / 0.3 N
|
| 5 mm | Stal (~0.2) |
0.01 kg / 0.01 pounds
6.0 g / 0.1 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) - behavior on slippery surfaces
MPL 6x6x6 / N38
| Surface type | Friction coefficient / % Mocy | Max load (kg/lbs/g/N) |
|---|---|---|
| Raw steel |
µ = 0.3
30% Nominalnej Siły
|
0.41 kg / 0.91 pounds
414.0 g / 4.1 N
|
| Painted steel (standard) |
µ = 0.2
20% Nominalnej Siły
|
0.28 kg / 0.61 pounds
276.0 g / 2.7 N
|
| Oily/slippery steel |
µ = 0.1
10% Nominalnej Siły
|
0.14 kg / 0.30 pounds
138.0 g / 1.4 N
|
| Magnet with anti-slip rubber |
µ = 0.5
50% Nominalnej Siły
|
0.69 kg / 1.52 pounds
690.0 g / 6.8 N
|
Table 4: Material efficiency (saturation) - sheet metal selection
MPL 6x6x6 / N38
| Steel thickness (mm) | % power | Real pull force (kg/lbs/g/N) |
|---|---|---|
| 0.5 mm |
|
0.14 kg / 0.30 pounds
138.0 g / 1.4 N
|
| 1 mm |
|
0.35 kg / 0.76 pounds
345.0 g / 3.4 N
|
| 2 mm |
|
0.69 kg / 1.52 pounds
690.0 g / 6.8 N
|
| 3 mm |
|
1.04 kg / 2.28 pounds
1035.0 g / 10.2 N
|
| 5 mm |
|
1.38 kg / 3.04 pounds
1380.0 g / 13.5 N
|
| 10 mm |
|
1.38 kg / 3.04 pounds
1380.0 g / 13.5 N
|
| 11 mm |
|
1.38 kg / 3.04 pounds
1380.0 g / 13.5 N
|
| 12 mm |
|
1.38 kg / 3.04 pounds
1380.0 g / 13.5 N
|
Table 5: Working in heat (stability) - power drop
MPL 6x6x6 / N38
| Ambient temp. (°C) | Power loss | Remaining pull (kg/lbs/g/N) | Status |
|---|---|---|---|
| 20 °C | 0.0% |
1.38 kg / 3.04 pounds
1380.0 g / 13.5 N
|
OK |
| 40 °C | -2.2% |
1.35 kg / 2.98 pounds
1349.6 g / 13.2 N
|
OK |
| 60 °C | -4.4% |
1.32 kg / 2.91 pounds
1319.3 g / 12.9 N
|
OK |
| 80 °C | -6.6% |
1.29 kg / 2.84 pounds
1288.9 g / 12.6 N
|
|
| 100 °C | -28.8% |
0.98 kg / 2.17 pounds
982.6 g / 9.6 N
|
Table 6: Two magnets (attraction) - field range
MPL 6x6x6 / N38
| Gap (mm) | Attraction (kg/lbs) (N-S) | Shear Force (kg/lbs/g/N) | Repulsion (kg/lbs) (N-N) |
|---|---|---|---|
| 0 mm |
6.44 kg / 14.21 pounds
5 949 Gs
|
0.97 kg / 2.13 pounds
967 g / 9.5 N
|
N/A |
| 1 mm |
4.66 kg / 10.28 pounds
9 167 Gs
|
0.70 kg / 1.54 pounds
699 g / 6.9 N
|
4.20 kg / 9.25 pounds
~0 Gs
|
| 2 mm |
3.21 kg / 7.08 pounds
7 610 Gs
|
0.48 kg / 1.06 pounds
482 g / 4.7 N
|
2.89 kg / 6.38 pounds
~0 Gs
|
| 3 mm |
2.15 kg / 4.74 pounds
6 228 Gs
|
0.32 kg / 0.71 pounds
323 g / 3.2 N
|
1.94 kg / 4.27 pounds
~0 Gs
|
| 5 mm |
0.94 kg / 2.06 pounds
4 107 Gs
|
0.14 kg / 0.31 pounds
140 g / 1.4 N
|
0.84 kg / 1.86 pounds
~0 Gs
|
| 10 mm |
0.14 kg / 0.30 pounds
1 568 Gs
|
0.02 kg / 0.05 pounds
20 g / 0.2 N
|
0.12 kg / 0.27 pounds
~0 Gs
|
| 20 mm |
0.01 kg / 0.02 pounds
384 Gs
|
0.00 kg / 0.00 pounds
1 g / 0.0 N
|
0.00 kg / 0.00 pounds
~0 Gs
|
| 50 mm |
0.00 kg / 0.00 pounds
39 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
24 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
16 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
11 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
8 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
6 Gs
|
0.00 kg / 0.00 pounds
0 g / 0.0 N
|
0.00 kg / 0.00 pounds
~0 Gs
|
Table 7: Protective zones (electronics) - warnings
MPL 6x6x6 / 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) | 2.5 cm |
| Phone / Smartphone | 40 Gs (4.0 mT) | 2.0 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: Dynamics (cracking risk) - warning
MPL 6x6x6 / N38
| Start from (mm) | Speed (km/h) | Energy (J) | Predicted outcome |
|---|---|---|---|
| 10 mm |
29.46 km/h
(8.18 m/s)
|
0.05 J | |
| 30 mm |
50.98 km/h
(14.16 m/s)
|
0.16 J | |
| 50 mm |
65.82 km/h
(18.28 m/s)
|
0.27 J | |
| 100 mm |
93.08 km/h
(25.86 m/s)
|
0.54 J |
Table 9: Corrosion resistance
MPL 6x6x6 / 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 6x6x6 / N38
| Parameter | Value | SI Unit / Description |
|---|---|---|
| Magnetic Flux | 1 982 Mx | 19.8 µWb |
| Pc Coefficient | 0.84 | High (Stable) |
Table 11: Submerged application
MPL 6x6x6 / N38
| Environment | Effective steel pull | Effect |
|---|---|---|
| Air (land) | 1.38 kg | Standard |
| Water (riverbed) |
1.58 kg
(+0.20 kg buoyancy gain)
|
+14.5% |
1. Shear force
*Warning: On a vertical wall, the magnet retains merely approx. 20-30% of its max power.
2. Steel saturation
*Thin metal sheet (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) = 0.84
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.
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% |
Sustainability
| recyclability (EoL) | 100% |
| recycled raw materials | ~10% (pre-cons) |
| carbon footprint | low / zredukowany |
| waste code (EWC) | 16 02 16 |
See more products
Advantages and disadvantages of rare earth magnets.
Advantages
- Their power is durable, and after approximately ten years it drops only by ~1% (according to research),
- Magnets effectively protect themselves against loss of magnetization caused by external fields,
- In other words, due to the glossy layer of silver, the element gains visual value,
- Neodymium magnets ensure maximum magnetic induction on a contact point, which allows for strong attraction,
- Neodymium magnets are characterized by very high magnetic induction on the magnet surface and can work (depending on the shape) even at a temperature of 230°C or more...
- Possibility of accurate machining as well as optimizing to individual requirements,
- Fundamental importance in future technologies – they find application in hard drives, electromotive mechanisms, advanced medical instruments, also multitasking production systems.
- Thanks to their power density, small magnets offer high operating force, occupying minimum space,
Cons
- Brittleness is one of their disadvantages. Upon strong impact they can fracture. We recommend keeping them in a steel housing, which not only secures them against impacts but also increases their durability
- We warn that neodymium magnets can lose their power at high temperatures. To prevent this, we recommend our specialized [AH] magnets, which work effectively even at 230°C.
- Magnets exposed to a humid environment can corrode. Therefore while using outdoors, we advise using water-impermeable magnets made of rubber, plastic or other material protecting against moisture
- Due to limitations in creating nuts and complicated forms in magnets, we propose using a housing - magnetic holder.
- Potential hazard related to microscopic parts of magnets can be dangerous, when accidentally swallowed, which is particularly important in the context of child safety. It is also worth noting that small elements of these devices are able to be problematic in diagnostics medical after entering the body.
- Higher cost of purchase is one of the disadvantages compared to ceramic magnets, especially in budget applications
Pull force analysis
Maximum lifting capacity of the magnet – what contributes to it?
- with the use of a yoke made of low-carbon steel, ensuring maximum field concentration
- possessing a thickness of min. 10 mm to avoid saturation
- characterized by smoothness
- with zero gap (no coatings)
- under vertical force vector (90-degree angle)
- at room temperature
Lifting capacity in real conditions – factors
- Space between magnet and steel – every millimeter of distance (caused e.g. by varnish or dirt) diminishes the pulling force, often by half at just 0.5 mm.
- Pull-off angle – note that the magnet has greatest strength perpendicularly. Under sliding down, the capacity drops significantly, often to levels of 20-30% of the nominal value.
- Plate thickness – too thin plate does not accept the full field, causing part of the flux to be escaped into the air.
- Chemical composition of the base – mild steel attracts best. Alloy admixtures decrease magnetic properties and lifting capacity.
- Surface finish – full contact is obtained only on smooth steel. Rough texture reduce the real contact area, weakening the magnet.
- Temperature influence – high temperature reduces magnetic field. Too high temperature can permanently demagnetize the magnet.
Holding force was measured on a smooth steel plate of 20 mm thickness, when a perpendicular force was applied, however under attempts to slide the magnet the lifting capacity is smaller. In addition, even a minimal clearance between the magnet’s surface and the plate reduces the lifting capacity.
Precautions when working with NdFeB magnets
Cards and drives
Very strong magnetic fields can corrupt files on payment cards, hard drives, and storage devices. Stay away of at least 10 cm.
This is not a toy
These products are not suitable for play. Accidental ingestion of multiple magnets can lead to them connecting inside the digestive tract, which poses a direct threat to life and necessitates urgent medical intervention.
Bone fractures
Risk of injury: The attraction force is so great that it can result in blood blisters, pinching, and broken bones. Use thick gloves.
Do not drill into magnets
Mechanical processing of NdFeB material poses a fire hazard. Neodymium dust oxidizes rapidly with oxygen and is difficult to extinguish.
Conscious usage
Use magnets with awareness. Their immense force can surprise even professionals. Be vigilant and respect their force.
Heat warning
Monitor thermal conditions. Heating the magnet above 80 degrees Celsius will destroy its properties and strength.
Fragile material
Beware of splinters. Magnets can explode upon violent connection, ejecting sharp fragments into the air. Eye protection is mandatory.
Allergic reactions
It is widely known that the nickel plating (the usual finish) is a strong allergen. If your skin reacts to metals, refrain from touching magnets with bare hands and choose coated magnets.
Magnetic interference
An intense magnetic field interferes with the operation of magnetometers in phones and GPS navigation. Do not bring magnets near a device to avoid damaging the sensors.
Danger to pacemakers
For implant holders: Strong magnetic fields disrupt electronics. Maintain at least 30 cm distance or request help to work with the magnets.
