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
bulk discounts:
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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 |
Physical simulation of the product - data
These values are the outcome of a engineering simulation. Results are based on models for the material Nd2Fe14B. Actual conditions might slightly differ. Use these data as a preliminary roadmap for designers.
Table 1: Static force (force vs gap) - interaction chart
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 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 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) - 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 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 (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 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: 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 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: Two magnets (attraction) - field collision
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: Safety (HSE) (implants) - precautionary measures
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: Collisions (kinetic energy) - 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: Construction 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: Hydrostatics and buoyancy
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. Vertical hold
*Warning: On a vertical surface, the magnet holds just ~20% of its max power.
2. Steel saturation
*Thin steel (e.g. computer case) drastically weakens the holding force.
3. Thermal stability
*For N38 grade, the critical limit is 80°C.
4. Demagnetization curve and operating point (B-H)
chart generated for the permeance coefficient Pc (Permeance Coefficient) = 0.84
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% |
Ecology and recycling (GPSR)
| 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 Nd2Fe14B magnets.
Pros
- They have constant strength, and over nearly ten years their performance decreases symbolically – ~1% (in testing),
- They retain their magnetic properties even under external field action,
- A magnet with a metallic nickel surface has an effective appearance,
- They feature high magnetic induction at the operating surface, which affects their effectiveness,
- Thanks to resistance to high temperature, they can operate (depending on the form) even at temperatures up to 230°C and higher...
- Thanks to modularity in designing and the capacity to adapt to individual projects,
- Significant place in future technologies – they are used in computer drives, motor assemblies, medical equipment, as well as modern systems.
- Thanks to concentrated force, small magnets offer high operating force, occupying minimum space,
Disadvantages
- To avoid cracks upon strong impacts, we suggest using special steel holders. Such a solution protects the magnet and simultaneously improves its durability.
- When exposed to high temperature, neodymium magnets suffer a drop in power. Often, when the temperature exceeds 80°C, their power decreases (depending on the size and shape of the magnet). For those who need magnets for extreme conditions, we offer [AH] versions withstanding up to 230°C
- They rust in a humid environment - during use outdoors we recommend using waterproof magnets e.g. in rubber, plastic
- Limited possibility of creating threads in the magnet and complicated shapes - recommended is casing - magnet mounting.
- Possible danger to health – tiny shards of magnets can be dangerous, if swallowed, which gains importance in the context of child safety. Additionally, small components of these products are able to be problematic in diagnostics medical when they are in the body.
- Due to neodymium price, their price is higher than average,
Pull force analysis
Detachment force of the magnet in optimal conditions – what affects it?
- using a sheet made of mild steel, acting as a circuit closing element
- with a thickness no less than 10 mm
- with a plane cleaned and smooth
- with total lack of distance (no coatings)
- for force acting at a right angle (pull-off, not shear)
- at ambient temperature room level
Practical aspects of lifting capacity – factors
- Clearance – existence of foreign body (rust, dirt, air) interrupts the magnetic circuit, which lowers power steeply (even by 50% at 0.5 mm).
- Angle of force application – maximum parameter is available only during pulling at a 90° angle. The shear force of the magnet along the plate is standardly many times lower (approx. 1/5 of the lifting capacity).
- Wall thickness – the thinner the sheet, the weaker the hold. Part of the magnetic field penetrates through instead of generating force.
- Plate material – mild steel gives the best results. Higher carbon content decrease magnetic permeability and lifting capacity.
- Surface quality – the more even the surface, the larger the contact zone and stronger the hold. Roughness creates an air distance.
- Operating temperature – neodymium magnets have a negative temperature coefficient. When it is hot they lose power, and in frost they can be stronger (up to a certain limit).
Lifting capacity was determined with the use of a steel plate with a smooth surface of optimal thickness (min. 20 mm), under perpendicular detachment force, in contrast under parallel forces the lifting capacity is smaller. Additionally, even a slight gap between the magnet and the plate decreases the load capacity.
Safety rules for work with neodymium magnets
Magnetic media
Very strong magnetic fields can erase data on payment cards, HDDs, and other magnetic media. Maintain a gap of min. 10 cm.
Product not for children
Strictly store magnets away from children. Ingestion danger is significant, and the effects of magnets clamping inside the body are very dangerous.
Maximum temperature
Standard neodymium magnets (N-type) undergo demagnetization when the temperature exceeds 80°C. This process is irreversible.
Machining danger
Fire warning: Rare earth powder is highly flammable. Do not process magnets in home conditions as this risks ignition.
Skin irritation risks
Certain individuals experience a contact allergy to nickel, which is the standard coating for neodymium magnets. Extended handling might lead to a rash. We recommend wear protective gloves.
Eye protection
Watch out for shards. Magnets can fracture upon uncontrolled impact, launching shards into the air. Eye protection is mandatory.
Impact on smartphones
Navigation devices and mobile phones are highly susceptible to magnetism. Direct contact with a powerful NdFeB magnet can ruin the sensors in your phone.
Handling rules
Be careful. Neodymium magnets attract from a distance and snap with huge force, often quicker than you can move away.
Life threat
Patients with a pacemaker have to maintain an safe separation from magnets. The magnetism can disrupt the functioning of the implant.
Crushing force
Big blocks can smash fingers instantly. Never place your hand between two attracting surfaces.
