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
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Technical of the product - 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 |
Physical analysis of the product - report
The following data constitute the outcome of a engineering simulation. Values rely on models for the material Nd2Fe14B. Real-world parameters might slightly differ from theoretical values. Please consider these data as a reference point for designers.
Table 1: Static force (force vs distance) - 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
|
warning |
| 1 mm |
3152 Gs
315.2 mT
|
2.94 kg / 6.48 LBS
2938.4 g / 28.8 N
|
warning |
| 2 mm |
2595 Gs
259.5 mT
|
1.99 kg / 4.39 LBS
1991.8 g / 19.5 N
|
safe |
| 3 mm |
2089 Gs
208.9 mT
|
1.29 kg / 2.85 LBS
1291.2 g / 12.7 N
|
safe |
| 5 mm |
1321 Gs
132.1 mT
|
0.52 kg / 1.14 LBS
516.1 g / 5.1 N
|
safe |
| 10 mm |
455 Gs
45.5 mT
|
0.06 kg / 0.14 LBS
61.2 g / 0.6 N
|
safe |
| 15 mm |
193 Gs
19.3 mT
|
0.01 kg / 0.02 LBS
11.1 g / 0.1 N
|
safe |
| 20 mm |
97 Gs
9.7 mT
|
0.00 kg / 0.01 LBS
2.8 g / 0.0 N
|
safe |
| 30 mm |
34 Gs
3.4 mT
|
0.00 kg / 0.00 LBS
0.3 g / 0.0 N
|
safe |
| 50 mm |
8 Gs
0.8 mT
|
0.00 kg / 0.00 LBS
0.0 g / 0.0 N
|
safe |
Table 2: Slippage force (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 (sliding) - behavior on slippery surfaces
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: Steel thickness (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: Thermal resistance (material behavior) - thermal limit
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 range
MPL 13x10x5 / N35H
| Gap (mm) | Attraction (kg/lbs) (N-S) | Sliding 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 (implants) - warnings
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 |
| Mechanical watch | 20 Gs (2.0 mT) | 4.0 cm |
| Phone / Smartphone | 40 Gs (4.0 mT) | 3.0 cm |
| Remote | 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: Dynamics (kinetic energy) - collision effects
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: Electrical 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. Shear force
*Caution: On a vertical surface, the magnet holds only a fraction of its perpendicular strength.
2. Steel saturation
*Thin metal sheet (e.g. computer case) severely limits 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) = 0.49
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.
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% |
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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Pros as well as cons of Nd2Fe14B magnets.
Benefits
- They have stable power, and over nearly 10 years their attraction force decreases symbolically – ~1% (in testing),
- Magnets effectively defend themselves against demagnetization caused by ambient magnetic noise,
- A magnet with a metallic silver surface has better aesthetics,
- Magnetic induction on the working part of the magnet remains very high,
- Due to their durability and thermal resistance, neodymium magnets can operate (depending on the form) even at high temperatures reaching 230°C or more...
- Possibility of precise forming as well as adapting to complex needs,
- Universal use in modern industrial fields – they are commonly used in computer drives, motor assemblies, precision medical tools, as well as multitasking production systems.
- Compactness – despite small sizes they generate large force, making them ideal for precision applications
Disadvantages
- They are prone to damage upon too strong impacts. To avoid cracks, it is worth protecting magnets in a protective case. Such protection not only protects the magnet but also increases its resistance to damage
- When exposed to high temperature, neodymium magnets experience 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
- Magnets exposed to a humid environment can corrode. Therefore when using outdoors, we advise using water-impermeable magnets made of rubber, plastic or other material resistant to moisture
- We recommend casing - magnetic holder, due to difficulties in realizing nuts inside the magnet and complicated shapes.
- Possible danger related to microscopic parts of magnets pose a threat, if swallowed, which becomes key in the context of child health protection. Additionally, small components of these magnets are able to be problematic in diagnostics medical after entering the body.
- With budget limitations the cost of neodymium magnets can be a barrier,
Pull force analysis
Maximum holding power of the magnet – what it depends on?
- with the use of a sheet made of low-carbon steel, guaranteeing full magnetic saturation
- possessing a thickness of minimum 10 mm to ensure full flux closure
- with a plane free of scratches
- without the slightest clearance between the magnet and steel
- under perpendicular application of breakaway force (90-degree angle)
- at conditions approx. 20°C
Determinants of lifting force in real conditions
- Gap (between the magnet and the plate), since even a microscopic distance (e.g. 0.5 mm) results in a decrease in force by up to 50% (this also applies to paint, corrosion or dirt).
- Loading method – catalog parameter refers to detachment vertically. When applying parallel force, the magnet exhibits significantly lower power (often approx. 20-30% of maximum force).
- Substrate thickness – to utilize 100% power, the steel must be adequately massive. Thin sheet restricts the lifting capacity (the magnet "punches through" it).
- Metal type – different alloys reacts the same. High carbon content weaken the interaction with the magnet.
- Smoothness – full contact is possible only on polished steel. Any scratches and bumps create air cushions, reducing force.
- 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 by applying a smooth steel plate of suitable thickness (min. 20 mm), under perpendicular pulling force, however under shearing force the holding force is lower. In addition, even a slight gap between the magnet’s surface and the plate decreases the holding force.
Safe handling of neodymium magnets
Nickel allergy
Studies show that nickel (the usual finish) is a strong allergen. If you have an allergy, refrain from touching magnets with bare hands or select encased magnets.
Pinching danger
Danger of trauma: The attraction force is so great that it can result in blood blisters, crushing, and even bone fractures. Use thick gloves.
Magnetic interference
Navigation devices and smartphones are extremely sensitive to magnetic fields. Direct contact with a strong magnet can decalibrate the sensors in your phone.
Material brittleness
Despite the nickel coating, neodymium is brittle and not impact-resistant. Avoid impacts, as the magnet may crumble into sharp, dangerous pieces.
Medical implants
Life threat: Strong magnets can deactivate heart devices and defibrillators. Stay away if you have medical devices.
Protect data
Powerful magnetic fields can erase data on payment cards, HDDs, and storage devices. Stay away of min. 10 cm.
Handling guide
Handle with care. Rare earth magnets attract from a long distance and snap with huge force, often faster than you can move away.
No play value
Product intended for adults. Tiny parts can be swallowed, causing intestinal necrosis. Keep away from kids and pets.
Machining danger
Machining of neodymium magnets poses a fire risk. Neodymium dust reacts violently with oxygen and is difficult to extinguish.
Thermal limits
Monitor thermal conditions. Exposing the magnet to high heat will permanently weaken its properties and strength.
