MPL 13x10x5 / N35H - lamellar magnet
lamellar magnet
Catalog no 020119
GTIN/EAN: 5906301811251
length
13 mm [±0,1 mm]
Width
10 mm [±0,1 mm]
Height
5 mm [±0,1 mm]
Weight
4.88 g
Magnetization Direction
↑ axial
Load capacity
4.03 kg / 39.54 N
Magnetic Induction
369.32 mT / 3693 Gs
Coating
[NiCuNi] Nickel
2.58 ZŁ with VAT / pcs + price for transport
2.10 ZŁ net + 23% VAT / pcs
bulk discounts:
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Product card - MPL 13x10x5 / N35H - lamellar magnet
Specification / characteristics - MPL 13x10x5 / N35H - lamellar magnet
| properties | values |
|---|---|
| Cat. no. | 020119 |
| GTIN/EAN | 5906301811251 |
| Production/Distribution | Dhit sp. z o.o. |
| Country of origin | Poland / China / Germany |
| Customs code | 85059029 |
| length | 13 mm [±0,1 mm] |
| Width | 10 mm [±0,1 mm] |
| Height | 5 mm [±0,1 mm] |
| Weight | 4.88 g |
| Magnetization Direction | ↑ axial |
| Load capacity ~ ? | 4.03 kg / 39.54 N |
| Magnetic Induction ~ ? | 369.32 mT / 3693 Gs |
| Coating | [NiCuNi] Nickel |
| Manufacturing Tolerance | ±0.1 mm |
Magnetic properties of material N35H
| properties | values | units |
|---|---|---|
| remenance Br [min. - max.] ? | 11.7-12.1 | kGs |
| remenance Br [min. - max.] ? | 1170-1210 | mT |
| coercivity bHc ? | 10.8-11.5 | kOe |
| coercivity bHc ? | 860-915 | kA/m |
| actual internal force iHc | ≥ 17 | kOe |
| actual internal force iHc | ≥ 1353 | kA/m |
| energy density [min. - max.] ? | 33-35 | BH max MGOe |
| energy density [min. - max.] ? | 263-279 | BH max KJ/m |
| max. temperature ? | ≤ 120 | °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 modeling of the product - data
These information constitute the outcome of a engineering simulation. Values rely on models for the material Nd2Fe14B. Actual performance might slightly deviate from the simulation results. Please consider these data as a supplementary guide during assembly planning.
Table 1: Static force (force vs gap) - characteristics
MPL 13x10x5 / N35H
| Distance (mm) | Induction (Gauss) / mT | Pull Force (kg/lbs/g/N) | Risk Status |
|---|---|---|---|
| 0 mm |
3691 Gs
369.1 mT
|
4.03 kg / 8.88 lbs
4030.0 g / 39.5 N
|
medium risk |
| 1 mm |
3152 Gs
315.2 mT
|
2.94 kg / 6.48 lbs
2938.4 g / 28.8 N
|
medium risk |
| 2 mm |
2595 Gs
259.5 mT
|
1.99 kg / 4.39 lbs
1991.8 g / 19.5 N
|
low risk |
| 3 mm |
2089 Gs
208.9 mT
|
1.29 kg / 2.85 lbs
1291.2 g / 12.7 N
|
low risk |
| 5 mm |
1321 Gs
132.1 mT
|
0.52 kg / 1.14 lbs
516.1 g / 5.1 N
|
low risk |
| 10 mm |
455 Gs
45.5 mT
|
0.06 kg / 0.14 lbs
61.2 g / 0.6 N
|
low risk |
| 15 mm |
193 Gs
19.3 mT
|
0.01 kg / 0.02 lbs
11.1 g / 0.1 N
|
low risk |
| 20 mm |
97 Gs
9.7 mT
|
0.00 kg / 0.01 lbs
2.8 g / 0.0 N
|
low risk |
| 30 mm |
34 Gs
3.4 mT
|
0.00 kg / 0.00 lbs
0.3 g / 0.0 N
|
low risk |
| 50 mm |
8 Gs
0.8 mT
|
0.00 kg / 0.00 lbs
0.0 g / 0.0 N
|
low risk |
Table 2: Sliding capacity (vertical surface)
MPL 13x10x5 / N35H
| Distance (mm) | Friction coefficient | Pull Force (kg/lbs/g/N) |
|---|---|---|
| 0 mm | Stal (~0.2) |
0.81 kg / 1.78 lbs
806.0 g / 7.9 N
|
| 1 mm | Stal (~0.2) |
0.59 kg / 1.30 lbs
588.0 g / 5.8 N
|
| 2 mm | Stal (~0.2) |
0.40 kg / 0.88 lbs
398.0 g / 3.9 N
|
| 3 mm | Stal (~0.2) |
0.26 kg / 0.57 lbs
258.0 g / 2.5 N
|
| 5 mm | Stal (~0.2) |
0.10 kg / 0.23 lbs
104.0 g / 1.0 N
|
| 10 mm | Stal (~0.2) |
0.01 kg / 0.03 lbs
12.0 g / 0.1 N
|
| 15 mm | Stal (~0.2) |
0.00 kg / 0.00 lbs
2.0 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 13x10x5 / N35H
| Surface type | Friction coefficient / % Mocy | Max load (kg/lbs/g/N) |
|---|---|---|
| Raw steel |
µ = 0.3
30% Nominalnej Siły
|
1.21 kg / 2.67 lbs
1209.0 g / 11.9 N
|
| Painted steel (standard) |
µ = 0.2
20% Nominalnej Siły
|
0.81 kg / 1.78 lbs
806.0 g / 7.9 N
|
| Oily/slippery steel |
µ = 0.1
10% Nominalnej Siły
|
0.40 kg / 0.89 lbs
403.0 g / 4.0 N
|
| Magnet with anti-slip rubber |
µ = 0.5
50% Nominalnej Siły
|
2.02 kg / 4.44 lbs
2015.0 g / 19.8 N
|
Table 4: Material efficiency (substrate influence) - power losses
MPL 13x10x5 / N35H
| Steel thickness (mm) | % power | Real pull force (kg/lbs/g/N) |
|---|---|---|
| 0.5 mm |
|
0.40 kg / 0.89 lbs
403.0 g / 4.0 N
|
| 1 mm |
|
1.01 kg / 2.22 lbs
1007.5 g / 9.9 N
|
| 2 mm |
|
2.02 kg / 4.44 lbs
2015.0 g / 19.8 N
|
| 3 mm |
|
3.02 kg / 6.66 lbs
3022.5 g / 29.7 N
|
| 5 mm |
|
4.03 kg / 8.88 lbs
4030.0 g / 39.5 N
|
| 10 mm |
|
4.03 kg / 8.88 lbs
4030.0 g / 39.5 N
|
| 11 mm |
|
4.03 kg / 8.88 lbs
4030.0 g / 39.5 N
|
| 12 mm |
|
4.03 kg / 8.88 lbs
4030.0 g / 39.5 N
|
Table 5: Working in heat (material behavior) - resistance threshold
MPL 13x10x5 / N35H
| Ambient temp. (°C) | Power loss | Remaining pull (kg/lbs/g/N) | Status |
|---|---|---|---|
| 20 °C | 0.0% |
4.03 kg / 8.88 lbs
4030.0 g / 39.5 N
|
OK |
| 80 °C | -6.6% |
3.76 kg / 8.30 lbs
3764.0 g / 36.9 N
|
|
| 120 °C | -11.0% |
3.59 kg / 7.91 lbs
3586.7 g / 35.2 N
|
|
| 140 °C | -33.2% |
2.69 kg / 5.93 lbs
2692.0 g / 26.4 N
|
Table 6: Magnet-Magnet interaction (attraction) - field collision
MPL 13x10x5 / N35H
| Gap (mm) | Attraction (kg/lbs) (N-S) | Lateral Force (kg/lbs/g/N) | Repulsion (kg/lbs) (N-N) |
|---|---|---|---|
| 0 mm |
10.92 kg / 24.08 lbs
5 009 Gs
|
1.64 kg / 3.61 lbs
1638 g / 16.1 N
|
N/A |
| 1 mm |
9.43 kg / 20.80 lbs
6 862 Gs
|
1.42 kg / 3.12 lbs
1415 g / 13.9 N
|
8.49 kg / 18.72 lbs
~0 Gs
|
| 2 mm |
7.96 kg / 17.55 lbs
6 304 Gs
|
1.19 kg / 2.63 lbs
1194 g / 11.7 N
|
7.17 kg / 15.80 lbs
~0 Gs
|
| 3 mm |
6.60 kg / 14.56 lbs
5 740 Gs
|
0.99 kg / 2.18 lbs
990 g / 9.7 N
|
5.94 kg / 13.10 lbs
~0 Gs
|
| 5 mm |
4.36 kg / 9.62 lbs
4 667 Gs
|
0.65 kg / 1.44 lbs
655 g / 6.4 N
|
3.93 kg / 8.66 lbs
~0 Gs
|
| 10 mm |
1.40 kg / 3.08 lbs
2 642 Gs
|
0.21 kg / 0.46 lbs
210 g / 2.1 N
|
1.26 kg / 2.78 lbs
~0 Gs
|
| 20 mm |
0.17 kg / 0.37 lbs
910 Gs
|
0.02 kg / 0.05 lbs
25 g / 0.2 N
|
0.15 kg / 0.33 lbs
~0 Gs
|
| 50 mm |
0.00 kg / 0.01 lbs
110 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
68 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
45 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
31 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
22 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
17 Gs
|
0.00 kg / 0.00 lbs
0 g / 0.0 N
|
0.00 kg / 0.00 lbs
~0 Gs
|
Table 7: Hazards (electronics) - precautionary measures
MPL 13x10x5 / N35H
| Object / Device | Limit (Gauss) / mT | Safe distance |
|---|---|---|
| Pacemaker | 5 Gs (0.5 mT) | 6.0 cm |
| Hearing aid | 10 Gs (1.0 mT) | 5.0 cm |
| Timepiece | 20 Gs (2.0 mT) | 4.0 cm |
| Mobile device | 40 Gs (4.0 mT) | 3.0 cm |
| Car key | 50 Gs (5.0 mT) | 3.0 cm |
| Payment card | 400 Gs (40.0 mT) | 1.5 cm |
| HDD hard drive | 600 Gs (60.0 mT) | 1.0 cm |
Table 8: Collisions (kinetic energy) - warning
MPL 13x10x5 / N35H
| Start from (mm) | Speed (km/h) | Energy (J) | Predicted outcome |
|---|---|---|---|
| 10 mm |
29.26 km/h
(8.13 m/s)
|
0.16 J | |
| 30 mm |
50.20 km/h
(13.94 m/s)
|
0.47 J | |
| 50 mm |
64.81 km/h
(18.00 m/s)
|
0.79 J | |
| 100 mm |
91.65 km/h
(25.46 m/s)
|
1.58 J |
Table 9: Surface protection spec
MPL 13x10x5 / N35H
| 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 13x10x5 / N35H
| Parameter | Value | SI Unit / Description |
|---|---|---|
| Magnetic Flux | 4 919 Mx | 49.2 µWb |
| Pc Coefficient | 0.49 | Low (Flat) |
Table 11: Physics of underwater searching
MPL 13x10x5 / N35H
| Environment | Effective steel pull | Effect |
|---|---|---|
| Air (land) | 4.03 kg | Standard |
| Water (riverbed) |
4.61 kg
(+0.58 kg buoyancy gain)
|
+14.5% |
1. Sliding resistance
*Warning: On a vertical wall, the magnet holds only approx. 20-30% of its nominal pull.
2. Efficiency vs thickness
*Thin metal sheet (e.g. 0.5mm PC case) significantly weakens the holding force.
3. Thermal stability
*For standard magnets, the safety limit is 80°C.
4. Demagnetization curve and operating point (B-H)
chart generated for the permeance coefficient Pc (Permeance Coefficient) = 0.49
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.
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 |
Other offers
Strengths as well as weaknesses of rare earth magnets.
Benefits
- They virtually do not lose strength, because even after ten years the decline in efficiency is only ~1% (according to literature),
- Neodymium magnets are distinguished by extremely resistant to loss of magnetic properties caused by external interference,
- A magnet with a metallic silver surface looks better,
- Magnets have exceptionally strong magnetic induction on the outer layer,
- Made from properly selected components, these magnets show impressive resistance to high heat, enabling them to function (depending on their form) at temperatures up to 230°C and above...
- Thanks to freedom in designing and the ability to customize to complex applications,
- Versatile presence in innovative solutions – they find application in computer drives, brushless drives, medical devices, also multitasking production systems.
- Relatively small size with high pulling force – neodymium magnets offer strong magnetic field in small dimensions, which makes them useful in small systems
Disadvantages
- To avoid cracks upon strong impacts, we recommend using special steel housings. Such a solution secures the magnet and simultaneously improves its durability.
- When exposed to high temperature, neodymium magnets experience a drop in power. Often, when the temperature exceeds 80°C, their strength decreases (depending on the size, as well as shape of the magnet). For those who need magnets for extreme conditions, we offer [AH] versions withstanding up to 230°C
- Due to the susceptibility of magnets to corrosion in a humid environment, we advise using waterproof magnets made of rubber, plastic or other material immune to moisture, in case of application outdoors
- Limited ability of creating nuts in the magnet and complex shapes - preferred is a housing - mounting mechanism.
- Health risk related to microscopic parts of magnets pose a threat, in case of ingestion, which is particularly important in the aspect of protecting the youngest. It is also worth noting that tiny parts of these devices are able to complicate diagnosis medical when they are in the body.
- Higher cost of purchase is a significant factor to consider compared to ceramic magnets, especially in budget applications
Holding force characteristics
Maximum lifting capacity of the magnet – what contributes to it?
- using a base made of low-carbon steel, acting as a ideal flux conductor
- with a thickness no less than 10 mm
- with an ideally smooth touching surface
- without the slightest clearance between the magnet and steel
- during detachment in a direction vertical to the mounting surface
- at ambient temperature approx. 20 degrees Celsius
Magnet lifting force in use – key factors
- Distance (between the magnet and the metal), as even a tiny clearance (e.g. 0.5 mm) can cause a drastic drop in lifting capacity by up to 50% (this also applies to paint, corrosion or debris).
- Force direction – declared lifting capacity refers to detachment vertically. When attempting to slide, the magnet holds significantly lower power (typically approx. 20-30% of nominal force).
- Wall thickness – the thinner the sheet, the weaker the hold. Magnetic flux passes through the material instead of converting into lifting capacity.
- Material composition – different alloys reacts the same. High carbon content worsen the interaction with the magnet.
- Base smoothness – the more even the plate, the larger the contact zone and higher the lifting capacity. Unevenness acts like micro-gaps.
- Temperature influence – hot environment reduces pulling force. Too high temperature can permanently demagnetize the magnet.
Lifting capacity testing was carried out on plates with a smooth surface of suitable thickness, under perpendicular forces, whereas under attempts to slide the magnet the load capacity is reduced by as much as 75%. Additionally, even a slight gap between the magnet’s surface and the plate decreases the lifting capacity.
Precautions when working with NdFeB magnets
Metal Allergy
Studies show that the nickel plating (standard magnet coating) is a strong allergen. If your skin reacts to metals, avoid direct skin contact or choose versions in plastic housing.
Swallowing risk
Product intended for adults. Small elements pose a choking risk, leading to severe trauma. Keep out of reach of children and animals.
Danger to pacemakers
Warning for patients: Strong magnetic fields affect electronics. Maintain minimum 30 cm distance or request help to handle the magnets.
Crushing force
Danger of trauma: The attraction force is so immense that it can result in hematomas, crushing, and broken bones. Use thick gloves.
Material brittleness
Despite the nickel coating, neodymium is brittle and cannot withstand shocks. Do not hit, as the magnet may shatter into sharp, dangerous pieces.
Magnetic interference
A strong magnetic field interferes with the operation of magnetometers in smartphones and navigation systems. Do not bring magnets near a device to prevent damaging the sensors.
Machining danger
Mechanical processing of NdFeB material poses a fire hazard. Magnetic powder reacts violently with oxygen and is difficult to extinguish.
Power loss in heat
Standard neodymium magnets (grade N) lose magnetization when the temperature exceeds 80°C. Damage is permanent.
Data carriers
Data protection: Strong magnets can ruin payment cards and delicate electronics (heart implants, medical aids, timepieces).
Immense force
Before starting, check safety instructions. Uncontrolled attraction can break the magnet or injure your hand. Think ahead.
