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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Technical specification - 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 |
Technical simulation of the assembly - technical parameters
These information constitute the outcome of a mathematical calculation. Values rely on algorithms for the material Nd2Fe14B. Real-world parameters may differ. Treat these data as a reference point for designers.
Table 1: Static force (pull vs distance) - characteristics
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 lbs
1380.0 g / 13.5 N
|
low risk |
| 1 mm |
3805 Gs
380.5 mT
|
0.69 kg / 1.52 lbs
688.0 g / 6.7 N
|
low risk |
| 2 mm |
2530 Gs
253.0 mT
|
0.30 kg / 0.67 lbs
304.3 g / 3.0 N
|
low risk |
| 3 mm |
1671 Gs
167.1 mT
|
0.13 kg / 0.29 lbs
132.7 g / 1.3 N
|
low risk |
| 5 mm |
784 Gs
78.4 mT
|
0.03 kg / 0.06 lbs
29.2 g / 0.3 N
|
low risk |
| 10 mm |
192 Gs
19.2 mT
|
0.00 kg / 0.00 lbs
1.8 g / 0.0 N
|
low risk |
| 15 mm |
73 Gs
7.3 mT
|
0.00 kg / 0.00 lbs
0.3 g / 0.0 N
|
low risk |
| 20 mm |
35 Gs
3.5 mT
|
0.00 kg / 0.00 lbs
0.1 g / 0.0 N
|
low risk |
| 30 mm |
12 Gs
1.2 mT
|
0.00 kg / 0.00 lbs
0.0 g / 0.0 N
|
low risk |
| 50 mm |
3 Gs
0.3 mT
|
0.00 kg / 0.00 lbs
0.0 g / 0.0 N
|
low risk |
Table 2: Vertical force (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 lbs
276.0 g / 2.7 N
|
| 1 mm | Stal (~0.2) |
0.14 kg / 0.30 lbs
138.0 g / 1.4 N
|
| 2 mm | Stal (~0.2) |
0.06 kg / 0.13 lbs
60.0 g / 0.6 N
|
| 3 mm | Stal (~0.2) |
0.03 kg / 0.06 lbs
26.0 g / 0.3 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: Vertical assembly (sliding) - vertical pull
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 lbs
414.0 g / 4.1 N
|
| Painted steel (standard) |
µ = 0.2
20% Nominalnej Siły
|
0.28 kg / 0.61 lbs
276.0 g / 2.7 N
|
| Oily/slippery steel |
µ = 0.1
10% Nominalnej Siły
|
0.14 kg / 0.30 lbs
138.0 g / 1.4 N
|
| Magnet with anti-slip rubber |
µ = 0.5
50% Nominalnej Siły
|
0.69 kg / 1.52 lbs
690.0 g / 6.8 N
|
Table 4: Steel thickness (substrate influence) - 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 lbs
138.0 g / 1.4 N
|
| 1 mm |
|
0.35 kg / 0.76 lbs
345.0 g / 3.4 N
|
| 2 mm |
|
0.69 kg / 1.52 lbs
690.0 g / 6.8 N
|
| 3 mm |
|
1.04 kg / 2.28 lbs
1035.0 g / 10.2 N
|
| 5 mm |
|
1.38 kg / 3.04 lbs
1380.0 g / 13.5 N
|
| 10 mm |
|
1.38 kg / 3.04 lbs
1380.0 g / 13.5 N
|
| 11 mm |
|
1.38 kg / 3.04 lbs
1380.0 g / 13.5 N
|
| 12 mm |
|
1.38 kg / 3.04 lbs
1380.0 g / 13.5 N
|
Table 5: Thermal resistance (stability) - thermal limit
MPL 6x6x6 / N38
| Ambient temp. (°C) | Power loss | Remaining pull (kg/lbs/g/N) | Status |
|---|---|---|---|
| 20 °C | 0.0% |
1.38 kg / 3.04 lbs
1380.0 g / 13.5 N
|
OK |
| 40 °C | -2.2% |
1.35 kg / 2.98 lbs
1349.6 g / 13.2 N
|
OK |
| 60 °C | -4.4% |
1.32 kg / 2.91 lbs
1319.3 g / 12.9 N
|
OK |
| 80 °C | -6.6% |
1.29 kg / 2.84 lbs
1288.9 g / 12.6 N
|
|
| 100 °C | -28.8% |
0.98 kg / 2.17 lbs
982.6 g / 9.6 N
|
Table 6: Magnet-Magnet interaction (attraction) - forces in the system
MPL 6x6x6 / N38
| Gap (mm) | Attraction (kg/lbs) (N-S) | Shear Strength (kg/lbs/g/N) | Repulsion (kg/lbs) (N-N) |
|---|---|---|---|
| 0 mm |
6.44 kg / 14.21 lbs
5 949 Gs
|
0.97 kg / 2.13 lbs
967 g / 9.5 N
|
N/A |
| 1 mm |
4.66 kg / 10.28 lbs
9 167 Gs
|
0.70 kg / 1.54 lbs
699 g / 6.9 N
|
4.20 kg / 9.25 lbs
~0 Gs
|
| 2 mm |
3.21 kg / 7.08 lbs
7 610 Gs
|
0.48 kg / 1.06 lbs
482 g / 4.7 N
|
2.89 kg / 6.38 lbs
~0 Gs
|
| 3 mm |
2.15 kg / 4.74 lbs
6 228 Gs
|
0.32 kg / 0.71 lbs
323 g / 3.2 N
|
1.94 kg / 4.27 lbs
~0 Gs
|
| 5 mm |
0.94 kg / 2.06 lbs
4 107 Gs
|
0.14 kg / 0.31 lbs
140 g / 1.4 N
|
0.84 kg / 1.86 lbs
~0 Gs
|
| 10 mm |
0.14 kg / 0.30 lbs
1 568 Gs
|
0.02 kg / 0.05 lbs
20 g / 0.2 N
|
0.12 kg / 0.27 lbs
~0 Gs
|
| 20 mm |
0.01 kg / 0.02 lbs
384 Gs
|
0.00 kg / 0.00 lbs
1 g / 0.0 N
|
0.00 kg / 0.00 lbs
~0 Gs
|
| 50 mm |
0.00 kg / 0.00 lbs
39 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
24 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
16 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
11 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
8 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
6 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) - 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 |
| Timepiece | 20 Gs (2.0 mT) | 2.5 cm |
| Mobile device | 40 Gs (4.0 mT) | 2.0 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: 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: Coating parameters (durability)
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 (Pc)
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. Sliding resistance
*Note: On a vertical wall, the magnet retains merely approx. 20-30% of its max power.
2. Efficiency vs thickness
*Thin metal sheet (e.g. 0.5mm PC case) significantly limits the holding force.
3. Temperature resistance
*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) = 0.84
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.
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% |
Environmental data
| recyclability (EoL) | 100% |
| recycled raw materials | ~10% (pre-cons) |
| carbon footprint | low / zredukowany |
| waste code (EWC) | 16 02 16 |
Other proposals
Advantages as well as disadvantages of Nd2Fe14B magnets.
Pros
- They virtually do not lose power, because even after 10 years the decline in efficiency is only ~1% (according to literature),
- Neodymium magnets remain highly resistant to loss of magnetic properties caused by external magnetic fields,
- The use of an refined layer of noble metals (nickel, gold, silver) causes the element to have aesthetics,
- Magnetic induction on the top side of the magnet is maximum,
- Neodymium magnets are characterized by very high magnetic induction on the magnet surface and can work (depending on the form) even at a temperature of 230°C or more...
- Thanks to flexibility in shaping and the capacity to adapt to unusual requirements,
- Fundamental importance in advanced technology sectors – they serve a role in HDD drives, drive modules, advanced medical instruments, also multitasking production systems.
- Compactness – despite small sizes they offer powerful magnetic field, making them ideal for precision applications
Weaknesses
- Brittleness is one of their disadvantages. Upon strong impact they can break. We advise keeping them in a special holder, which not only secures them against impacts but also increases their durability
- Neodymium magnets decrease 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 rust. Therefore during using outdoors, we recommend using waterproof magnets made of rubber, plastic or other material protecting against moisture
- We suggest cover - magnetic mount, due to difficulties in realizing threads inside the magnet and complex shapes.
- Health risk resulting from small fragments of magnets are risky, if swallowed, which is particularly important in the context of child safety. Additionally, small components of these products can be problematic in diagnostics medical when they are in the body.
- High unit price – neodymium magnets are more expensive than other types of magnets (e.g. ferrite), which can limit application in large quantities
Pull force analysis
Optimal lifting capacity of a neodymium magnet – what affects it?
- with the application of a yoke made of special test steel, ensuring maximum field concentration
- whose transverse dimension reaches at least 10 mm
- with an ground contact surface
- with total lack of distance (without paint)
- under vertical force direction (90-degree angle)
- at room temperature
Determinants of practical lifting force of a magnet
- Air gap (betwixt the magnet and the plate), since even a tiny clearance (e.g. 0.5 mm) leads to a decrease in force by up to 50% (this also applies to paint, corrosion or dirt).
- Pull-off angle – remember that the magnet has greatest strength perpendicularly. Under sliding down, the capacity drops significantly, often to levels of 20-30% of the nominal value.
- Element thickness – to utilize 100% power, the steel must be sufficiently thick. Thin sheet restricts the attraction force (the magnet "punches through" it).
- Steel grade – ideal substrate is pure iron steel. Hardened steels may have worse magnetic properties.
- Smoothness – full contact is possible only on smooth steel. Rough texture reduce the real contact area, reducing force.
- Thermal factor – hot environment reduces pulling force. Too high temperature can permanently demagnetize the magnet.
Lifting capacity testing was conducted on a smooth plate of optimal thickness, under perpendicular forces, whereas under attempts to slide the magnet the holding force is lower. Moreover, even a small distance between the magnet’s surface and the plate reduces the lifting capacity.
Safe handling of neodymium magnets
Threat to navigation
Navigation devices and smartphones are highly susceptible to magnetic fields. Direct contact with a powerful NdFeB magnet can ruin the sensors in your phone.
Do not drill into magnets
Powder created during machining of magnets is self-igniting. Do not drill into magnets unless you are an expert.
Sensitization to coating
Warning for allergy sufferers: The Ni-Cu-Ni coating contains nickel. If skin irritation occurs, cease working with magnets and wear gloves.
Magnet fragility
NdFeB magnets are ceramic materials, meaning they are very brittle. Collision of two magnets leads to them shattering into small pieces.
Life threat
Patients with a heart stimulator must maintain an absolute distance from magnets. The magnetism can stop the operation of the implant.
Maximum temperature
Standard neodymium magnets (N-type) lose magnetization when the temperature surpasses 80°C. Damage is permanent.
Choking Hazard
Neodymium magnets are not toys. Swallowing multiple magnets may result in them pinching intestinal walls, which poses a direct threat to life and necessitates urgent medical intervention.
Cards and drives
Very strong magnetic fields can erase data on credit cards, HDDs, and other magnetic media. Maintain a gap of min. 10 cm.
Bone fractures
Danger of trauma: The attraction force is so great that it can result in blood blisters, pinching, and broken bones. Use thick gloves.
Respect the power
Before starting, check safety instructions. Uncontrolled attraction can destroy the magnet or hurt your hand. Be predictive.
