MPL 10x7x3 / N38 - lamellar magnet
lamellar magnet
Catalog no 020115
GTIN/EAN: 5906301811213
length
10 mm [±0,1 mm]
Width
7 mm [±0,1 mm]
Height
3 mm [±0,1 mm]
Weight
1.58 g
Magnetization Direction
↑ axial
Load capacity
2.02 kg / 19.82 N
Magnetic Induction
339.79 mT / 3398 Gs
Coating
[NiCuNi] Nickel
0.849 ZŁ with VAT / pcs + price for transport
0.690 ZŁ net + 23% VAT / pcs
bulk discounts:
Need more?
Pick up the phone and ask
+48 888 99 98 98
or contact us through
our online form
our website.
Strength and appearance of neodymium magnets can be tested using our
magnetic calculator.
Orders submitted before 14:00 will be dispatched today!
Detailed specification - MPL 10x7x3 / N38 - lamellar magnet
Specification / characteristics - MPL 10x7x3 / N38 - lamellar magnet
| properties | values |
|---|---|
| Cat. no. | 020115 |
| GTIN/EAN | 5906301811213 |
| Production/Distribution | Dhit sp. z o.o. |
| Country of origin | Poland / China / Germany |
| Customs code | 85059029 |
| length | 10 mm [±0,1 mm] |
| Width | 7 mm [±0,1 mm] |
| Height | 3 mm [±0,1 mm] |
| Weight | 1.58 g |
| Magnetization Direction | ↑ axial |
| Load capacity ~ ? | 2.02 kg / 19.82 N |
| Magnetic Induction ~ ? | 339.79 mT / 3398 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 magnet - report
Presented values represent the result of a engineering analysis. Values are based on algorithms for the class Nd2Fe14B. Operational performance may differ from theoretical values. Use these calculations as a preliminary roadmap when designing systems.
Table 1: Static force (pull vs distance) - power drop
MPL 10x7x3 / N38
| Distance (mm) | Induction (Gauss) / mT | Pull Force (kg/lbs/g/N) | Risk Status |
|---|---|---|---|
| 0 mm |
3396 Gs
339.6 mT
|
2.02 kg / 4.45 pounds
2020.0 g / 19.8 N
|
warning |
| 1 mm |
2727 Gs
272.7 mT
|
1.30 kg / 2.87 pounds
1303.2 g / 12.8 N
|
weak grip |
| 2 mm |
2053 Gs
205.3 mT
|
0.74 kg / 1.63 pounds
738.2 g / 7.2 N
|
weak grip |
| 3 mm |
1502 Gs
150.2 mT
|
0.40 kg / 0.87 pounds
395.2 g / 3.9 N
|
weak grip |
| 5 mm |
803 Gs
80.3 mT
|
0.11 kg / 0.25 pounds
113.0 g / 1.1 N
|
weak grip |
| 10 mm |
216 Gs
21.6 mT
|
0.01 kg / 0.02 pounds
8.2 g / 0.1 N
|
weak grip |
| 15 mm |
82 Gs
8.2 mT
|
0.00 kg / 0.00 pounds
1.2 g / 0.0 N
|
weak grip |
| 20 mm |
39 Gs
3.9 mT
|
0.00 kg / 0.00 pounds
0.3 g / 0.0 N
|
weak grip |
| 30 mm |
13 Gs
1.3 mT
|
0.00 kg / 0.00 pounds
0.0 g / 0.0 N
|
weak grip |
| 50 mm |
3 Gs
0.3 mT
|
0.00 kg / 0.00 pounds
0.0 g / 0.0 N
|
weak grip |
Table 2: Sliding load (vertical surface)
MPL 10x7x3 / N38
| Distance (mm) | Friction coefficient | Pull Force (kg/lbs/g/N) |
|---|---|---|
| 0 mm | Stal (~0.2) |
0.40 kg / 0.89 pounds
404.0 g / 4.0 N
|
| 1 mm | Stal (~0.2) |
0.26 kg / 0.57 pounds
260.0 g / 2.6 N
|
| 2 mm | Stal (~0.2) |
0.15 kg / 0.33 pounds
148.0 g / 1.5 N
|
| 3 mm | Stal (~0.2) |
0.08 kg / 0.18 pounds
80.0 g / 0.8 N
|
| 5 mm | Stal (~0.2) |
0.02 kg / 0.05 pounds
22.0 g / 0.2 N
|
| 10 mm | Stal (~0.2) |
0.00 kg / 0.00 pounds
2.0 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: Vertical assembly (sliding) - vertical pull
MPL 10x7x3 / N38
| Surface type | Friction coefficient / % Mocy | Max load (kg/lbs/g/N) |
|---|---|---|
| Raw steel |
µ = 0.3
30% Nominalnej Siły
|
0.61 kg / 1.34 pounds
606.0 g / 5.9 N
|
| Painted steel (standard) |
µ = 0.2
20% Nominalnej Siły
|
0.40 kg / 0.89 pounds
404.0 g / 4.0 N
|
| Oily/slippery steel |
µ = 0.1
10% Nominalnej Siły
|
0.20 kg / 0.45 pounds
202.0 g / 2.0 N
|
| Magnet with anti-slip rubber |
µ = 0.5
50% Nominalnej Siły
|
1.01 kg / 2.23 pounds
1010.0 g / 9.9 N
|
Table 4: Material efficiency (saturation) - power losses
MPL 10x7x3 / N38
| Steel thickness (mm) | % power | Real pull force (kg/lbs/g/N) |
|---|---|---|
| 0.5 mm |
|
0.20 kg / 0.45 pounds
202.0 g / 2.0 N
|
| 1 mm |
|
0.51 kg / 1.11 pounds
505.0 g / 5.0 N
|
| 2 mm |
|
1.01 kg / 2.23 pounds
1010.0 g / 9.9 N
|
| 3 mm |
|
1.52 kg / 3.34 pounds
1515.0 g / 14.9 N
|
| 5 mm |
|
2.02 kg / 4.45 pounds
2020.0 g / 19.8 N
|
| 10 mm |
|
2.02 kg / 4.45 pounds
2020.0 g / 19.8 N
|
| 11 mm |
|
2.02 kg / 4.45 pounds
2020.0 g / 19.8 N
|
| 12 mm |
|
2.02 kg / 4.45 pounds
2020.0 g / 19.8 N
|
Table 5: Thermal stability (material behavior) - resistance threshold
MPL 10x7x3 / N38
| Ambient temp. (°C) | Power loss | Remaining pull (kg/lbs/g/N) | Status |
|---|---|---|---|
| 20 °C | 0.0% |
2.02 kg / 4.45 pounds
2020.0 g / 19.8 N
|
OK |
| 40 °C | -2.2% |
1.98 kg / 4.36 pounds
1975.6 g / 19.4 N
|
OK |
| 60 °C | -4.4% |
1.93 kg / 4.26 pounds
1931.1 g / 18.9 N
|
|
| 80 °C | -6.6% |
1.89 kg / 4.16 pounds
1886.7 g / 18.5 N
|
|
| 100 °C | -28.8% |
1.44 kg / 3.17 pounds
1438.2 g / 14.1 N
|
Table 6: Two magnets (attraction) - field collision
MPL 10x7x3 / N38
| Gap (mm) | Attraction (kg/lbs) (N-S) | Shear Force (kg/lbs/g/N) | Repulsion (kg/lbs) (N-N) |
|---|---|---|---|
| 0 mm |
4.98 kg / 10.97 pounds
4 893 Gs
|
0.75 kg / 1.65 pounds
746 g / 7.3 N
|
N/A |
| 1 mm |
4.09 kg / 9.01 pounds
6 155 Gs
|
0.61 kg / 1.35 pounds
613 g / 6.0 N
|
3.68 kg / 8.11 pounds
~0 Gs
|
| 2 mm |
3.21 kg / 7.08 pounds
5 455 Gs
|
0.48 kg / 1.06 pounds
482 g / 4.7 N
|
2.89 kg / 6.37 pounds
~0 Gs
|
| 3 mm |
2.44 kg / 5.39 pounds
4 758 Gs
|
0.37 kg / 0.81 pounds
366 g / 3.6 N
|
2.20 kg / 4.85 pounds
~0 Gs
|
| 5 mm |
1.34 kg / 2.94 pounds
3 518 Gs
|
0.20 kg / 0.44 pounds
200 g / 2.0 N
|
1.20 kg / 2.65 pounds
~0 Gs
|
| 10 mm |
0.28 kg / 0.61 pounds
1 606 Gs
|
0.04 kg / 0.09 pounds
42 g / 0.4 N
|
0.25 kg / 0.55 pounds
~0 Gs
|
| 20 mm |
0.02 kg / 0.04 pounds
433 Gs
|
0.00 kg / 0.01 pounds
3 g / 0.0 N
|
0.02 kg / 0.04 pounds
~0 Gs
|
| 50 mm |
0.00 kg / 0.00 pounds
43 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
26 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
17 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 (implants) - precautionary measures
MPL 10x7x3 / 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) | 2.0 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: Impact energy (cracking risk) - collision effects
MPL 10x7x3 / N38
| Start from (mm) | Speed (km/h) | Energy (J) | Predicted outcome |
|---|---|---|---|
| 10 mm |
36.15 km/h
(10.04 m/s)
|
0.08 J | |
| 30 mm |
62.46 km/h
(17.35 m/s)
|
0.24 J | |
| 50 mm |
80.63 km/h
(22.40 m/s)
|
0.40 J | |
| 100 mm |
114.03 km/h
(31.68 m/s)
|
0.79 J |
Table 9: Anti-corrosion coating durability
MPL 10x7x3 / 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 (Pc)
MPL 10x7x3 / N38
| Parameter | Value | SI Unit / Description |
|---|---|---|
| Magnetic Flux | 2 480 Mx | 24.8 µWb |
| Pc Coefficient | 0.42 | Low (Flat) |
Table 11: Physics of underwater searching
MPL 10x7x3 / N38
| Environment | Effective steel pull | Effect |
|---|---|---|
| Air (land) | 2.02 kg | Standard |
| Water (riverbed) |
2.31 kg
(+0.29 kg buoyancy gain)
|
+14.5% |
1. Shear force
*Caution: On a vertical wall, the magnet retains only a fraction of its max power.
2. Steel thickness impact
*Thin steel (e.g. computer case) severely reduces the holding force.
3. Power loss vs temp
*For standard magnets, the critical limit is 80°C.
4. Demagnetization curve and operating point (B-H)
chart generated for the permeance coefficient Pc (Permeance Coefficient) = 0.42
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 |
View also proposals
Advantages as well as disadvantages of Nd2Fe14B magnets.
Advantages
- They have stable power, and over more than 10 years their performance decreases symbolically – ~1% (according to theory),
- They have excellent resistance to weakening of magnetic properties due to external fields,
- By covering with a lustrous coating of silver, the element gains an elegant look,
- Magnetic induction on the top side of the magnet turns out to be extremely intense,
- Through (appropriate) combination of ingredients, they can achieve high thermal resistance, allowing for action at temperatures approaching 230°C and above...
- Possibility of exact modeling as well as adapting to defined applications,
- Significant place in high-tech industry – they are utilized in magnetic memories, electric drive systems, diagnostic systems, and modern systems.
- Thanks to their power density, small magnets offer high operating force, occupying minimum space,
Disadvantages
- At strong impacts they can break, therefore we advise placing them in special holders. A metal housing provides additional protection against damage and increases the magnet's durability.
- NdFeB magnets lose force when exposed to high temperatures. After reaching 80°C, many of them experience permanent weakening of strength (a factor is the shape as well as 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 suggest using waterproof magnets made of rubber, plastic or other material protecting against moisture
- Due to limitations in producing threads and complicated forms in magnets, we propose using a housing - magnetic holder.
- Potential hazard to health – tiny shards of magnets can be dangerous, when accidentally swallowed, which becomes key in the aspect of protecting the youngest. It is also worth noting that small elements of these devices can disrupt the diagnostic process medical in case of swallowing.
- Higher cost of purchase is one of the disadvantages compared to ceramic magnets, especially in budget applications
Pull force analysis
Breakaway strength of the magnet in ideal conditions – what affects it?
- on a base made of structural steel, perfectly concentrating the magnetic flux
- whose thickness reaches at least 10 mm
- characterized by lack of roughness
- without any clearance between the magnet and steel
- under vertical force vector (90-degree angle)
- at temperature approx. 20 degrees Celsius
What influences lifting capacity in practice
- Gap between magnet and steel – every millimeter of distance (caused e.g. by varnish or unevenness) diminishes the magnet efficiency, often by half at just 0.5 mm.
- Loading method – declared lifting capacity refers to detachment vertically. When attempting to slide, the magnet holds significantly lower power (often approx. 20-30% of maximum force).
- Substrate thickness – for full efficiency, the steel must be sufficiently thick. Thin sheet limits the attraction force (the magnet "punches through" it).
- Material type – the best choice is high-permeability steel. Cast iron may attract less.
- Base smoothness – the more even the surface, the better the adhesion and stronger the hold. Roughness acts like micro-gaps.
- Thermal conditions – neodymium magnets have a sensitivity to temperature. When it is hot they are weaker, and at low temperatures gain strength (up to a certain limit).
Lifting capacity testing was conducted on plates with a smooth surface of suitable thickness, under perpendicular forces, whereas under parallel forces the holding force is lower. Additionally, even a slight gap between the magnet and the plate lowers the lifting capacity.
Precautions when working with NdFeB magnets
Fire risk
Machining of NdFeB material carries a risk of fire risk. Magnetic powder oxidizes rapidly with oxygen and is difficult to extinguish.
Permanent damage
Keep cool. NdFeB magnets are susceptible to temperature. If you need operation above 80°C, ask us about special high-temperature series (H, SH, UH).
Skin irritation risks
It is widely known that nickel (standard magnet coating) is a potent allergen. If your skin reacts to metals, avoid direct skin contact or opt for coated magnets.
Swallowing risk
Neodymium magnets are not intended for children. Eating multiple magnets can lead to them pinching intestinal walls, which poses a severe health hazard and requires immediate surgery.
Warning for heart patients
Warning for patients: Powerful magnets affect electronics. Maintain at least 30 cm distance or ask another person to work with the magnets.
Compass and GPS
Note: rare earth magnets generate a field that interferes with sensitive sensors. Keep a safe distance from your mobile, tablet, and navigation systems.
Eye protection
Neodymium magnets are ceramic materials, which means they are fragile like glass. Collision of two magnets will cause them shattering into shards.
Respect the power
Before use, check safety instructions. Sudden snapping can destroy the magnet or hurt your hand. Be predictive.
Protect data
Powerful magnetic fields can destroy records on payment cards, hard drives, and other magnetic media. Maintain a gap of min. 10 cm.
Crushing force
Large magnets can crush fingers instantly. Under no circumstances place your hand betwixt two strong magnets.
