MPL 50x20x5 / N38 - lamellar magnet
lamellar magnet
Catalog no 020473
GTIN: 5906301811930
length
50 mm [±0,1 mm]
Width
20 mm [±0,1 mm]
Height
5 mm [±0,1 mm]
Weight
37.5 g
Magnetization Direction
↑ axial
Load capacity
15.6 kg / 153.01 N
Magnetic Induction
197.73 mT
Coating
[NiCuNi] Nickel
14.56 ZŁ with VAT / pcs + price for transport
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MPL 50x20x5 / N38 - lamellar magnet
Specification / characteristics MPL 50x20x5 / N38 - lamellar magnet
| properties | values |
|---|---|
| Cat. no. | 020473 |
| GTIN | 5906301811930 |
| Production/Distribution | Dhit sp. z o.o. |
| Country of origin | Poland / China / Germany |
| Customs code | 85059029 |
| length | 50 mm [±0,1 mm] |
| Width | 20 mm [±0,1 mm] |
| Height | 5 mm [±0,1 mm] |
| Weight | 37.5 g |
| Magnetization Direction | ↑ axial |
| Load capacity ~ ? | 15.6 kg / 153.01 N |
| Magnetic Induction ~ ? | 197.73 mT |
| 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 | T |
| 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 106 | °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 product - data
Presented information represent the result of a mathematical calculation. Values were calculated on models for the material NdFeB. Operational conditions might slightly deviate from the simulation results. Use these calculations as a supplementary guide for designers.
MPL 50x20x5 / N38
| Distance (mm) | Induction (Gauss) / mT | Pull Force (kg) | Risk Status |
|---|---|---|---|
| 0 mm |
2669 Gs
266.9 mT
|
15.60 kg / 15600.0 g
153.0 N
|
dangerous! |
| 1 mm |
2544 Gs
254.4 mT
|
14.17 kg / 14174.3 g
139.1 N
|
dangerous! |
| 2 mm |
2393 Gs
239.3 mT
|
12.54 kg / 12538.9 g
123.0 N
|
dangerous! |
| 5 mm |
1395 Gs
139.5 mT
|
4.26 kg / 4263.2 g
41.8 N
|
warning |
| 10 mm |
870 Gs
87.0 mT
|
1.66 kg / 1658.9 g
16.3 N
|
low risk |
| 15 mm |
549 Gs
54.9 mT
|
0.66 kg / 658.9 g
6.5 N
|
low risk |
| 20 mm |
359 Gs
35.9 mT
|
0.28 kg / 282.6 g
2.8 N
|
low risk |
| 30 mm |
172 Gs
17.2 mT
|
0.06 kg / 64.5 g
0.6 N
|
low risk |
| 50 mm |
54 Gs
5.4 mT
|
0.01 kg / 6.4 g
0.1 N
|
low risk |
MPL 50x20x5 / N38
| Surface type | Friction coefficient / % Mocy | Max load (kg) |
|---|---|---|
| Raw steel |
µ = 0.3
30% Nominalnej Siły
|
4.68 kg / 4680.0 g
45.9 N
|
| Painted steel (standard) |
µ = 0.2
20% Nominalnej Siły
|
3.12 kg / 3120.0 g
30.6 N
|
| Oily/slippery steel |
µ = 0.1
10% Nominalnej Siły
|
1.56 kg / 1560.0 g
15.3 N
|
| Magnet with anti-slip rubber |
µ = 0.5
50% Nominalnej Siły
|
7.80 kg / 7800.0 g
76.5 N
|
MPL 50x20x5 / N38
| Steel thickness (mm) | % power | Real pull force (kg) |
|---|---|---|
| 0.5 mm |
|
0.78 kg / 780.0 g
7.7 N
|
| 1 mm |
|
1.95 kg / 1950.0 g
19.1 N
|
| 2 mm |
|
3.90 kg / 3900.0 g
38.3 N
|
| 5 mm |
|
9.75 kg / 9750.0 g
95.6 N
|
| 10 mm |
|
15.60 kg / 15600.0 g
153.0 N
|
MPL 50x20x5 / N38
| Ambient temp. (°C) | Power loss | Remaining pull | Status |
|---|---|---|---|
| 20 °C | 0.0% |
15.60 kg / 15600.0 g
153.0 N
|
OK |
| 40 °C | -2.2% |
15.26 kg / 15256.8 g
149.7 N
|
OK |
| 60 °C | -4.4% |
14.91 kg / 14913.6 g
146.3 N
|
OK |
| 80 °C | -6.6% |
14.57 kg / 14570.4 g
142.9 N
|
|
| 100 °C | -28.8% |
11.11 kg / 11107.2 g
109.0 N
|
MPL 50x20x5 / N38
| Gap (mm) | Attraction (kg) (N-S) | Repulsion (kg) (N-N) |
|---|---|---|
| 0 mm |
23.40 kg / 23400.0 g
229.6 N
|
N/A |
| 2 mm |
18.81 kg / 18810.0 g
184.5 N
|
17.56 kg / 17556.0 g
172.2 N
|
| 5 mm |
6.39 kg / 6390.0 g
62.7 N
|
5.96 kg / 5964.0 g
58.5 N
|
| 10 mm |
2.49 kg / 2490.0 g
24.4 N
|
2.32 kg / 2324.0 g
22.8 N
|
| 20 mm |
0.42 kg / 420.0 g
4.1 N
|
0.39 kg / 392.0 g
3.8 N
|
| 50 mm |
0.02 kg / 15.0 g
0.1 N
|
0.01 kg / 14.0 g
0.1 N
|
MPL 50x20x5 / N38
| Object / Device | Limit (Gauss) / mT | Safe distance |
|---|---|---|
| Pacemaker | 5 Gs (0.5 mT) | 12.5 cm |
| Hearing aid | 10 Gs (1.0 mT) | 9.5 cm |
| Timepiece | 20 Gs (2.0 mT) | 7.5 cm |
| Phone / Smartphone | 40 Gs (4.0 mT) | 6.0 cm |
| Car key | 50 Gs (5.0 mT) | 5.5 cm |
| Payment card | 400 Gs (40.0 mT) | 2.0 cm |
| HDD hard drive | 600 Gs (60.0 mT) | 1.5 cm |
MPL 50x20x5 / N38
| Start from (mm) | Speed (km/h) | Energy (J) | Predicted outcome |
|---|---|---|---|
| 10 mm |
21.89 km/h
(6.08 m/s)
|
0.69 J | |
| 30 mm |
35.72 km/h
(9.92 m/s)
|
1.85 J | |
| 50 mm |
46.01 km/h
(12.78 m/s)
|
3.06 J | |
| 100 mm |
65.05 km/h
(18.07 m/s)
|
6.12 J |
MPL 50x20x5 / 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) |
MPL 50x20x5 / N38
| Environment | Effective steel pull | Effect |
|---|---|---|
| Air (land) | 15.60 kg | Standard |
| Water (riverbed) |
17.86 kg
(+2.26 kg Buoyancy gain)
|
+14.5% |
See also products
Advantages as well as disadvantages of rare earth magnets.
Besides their magnetic performance, neodymium magnets are valued for these benefits:
- They retain full power for almost 10 years – the drop is just ~1% (based on simulations),
- They are resistant to demagnetization induced by presence of other magnetic fields,
- By using a reflective layer of gold, the element presents an modern look,
- Neodymium magnets create maximum magnetic induction on a contact point, which ensures high operational effectiveness,
- Made from properly selected components, these magnets show impressive resistance to high heat, enabling them to function (depending on their shape) at temperatures up to 230°C and above...
- Possibility of individual forming as well as adapting to precise conditions,
- Universal use in advanced technology sectors – they are commonly used in mass storage devices, electromotive mechanisms, diagnostic systems, also complex engineering applications.
- Thanks to efficiency per cm³, small magnets offer high operating force, in miniature format,
Disadvantages of neodymium magnets:
- They are prone to damage upon too strong impacts. To avoid cracks, it is worth protecting magnets using a steel holder. Such protection not only shields the magnet but also improves its resistance to damage
- Neodymium magnets lose their strength 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
- They oxidize in a humid environment - during use outdoors we advise using waterproof magnets e.g. in rubber, plastic
- Due to limitations in creating nuts and complicated forms in magnets, we recommend using a housing - magnetic mechanism.
- Potential hazard to health – tiny shards of magnets can be dangerous, if swallowed, which gains importance in the context of child safety. Furthermore, small elements of these magnets are able to 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
Magnetic strength at its maximum – what affects it?
Information about lifting capacity was defined for optimal configuration, including:
- on a plate made of mild steel, perfectly concentrating the magnetic field
- with a thickness no less than 10 mm
- characterized by smoothness
- under conditions of ideal adhesion (surface-to-surface)
- under vertical application of breakaway force (90-degree angle)
- at standard ambient temperature
What influences lifting capacity in practice
During everyday use, the actual lifting capacity is determined by many variables, listed from most significant:
- Clearance – existence of foreign body (paint, dirt, gap) acts as an insulator, which reduces capacity steeply (even by 50% at 0.5 mm).
- Loading method – declared lifting capacity refers to detachment vertically. When slipping, the magnet exhibits significantly lower power (typically approx. 20-30% of nominal force).
- Metal thickness – thin material does not allow full use of the magnet. Magnetic flux passes through the material instead of converting into lifting capacity.
- Material composition – different alloys attracts identically. Alloy additives worsen the interaction with the magnet.
- Smoothness – full contact is possible only on polished steel. Rough texture reduce the real contact area, weakening the magnet.
- Temperature – temperature increase results in weakening of induction. It is worth remembering the thermal limit for a given model.
* Holding force was checked on the plate surface of 20 mm thickness, when the force acted perpendicularly, in contrast under attempts to slide the magnet the lifting capacity is smaller. Moreover, even a slight gap {between} the magnet and the plate reduces the lifting capacity.
Safety rules for work with neodymium magnets
Finger safety
Risk of injury: The attraction force is so immense that it can result in hematomas, pinching, and even bone fractures. Protective gloves are recommended.
Keep away from electronics
GPS units and mobile phones are extremely susceptible to magnetism. Direct contact with a powerful NdFeB magnet can permanently damage the internal compass in your phone.
Fragile material
Neodymium magnets are ceramic materials, meaning they are fragile like glass. Collision of two magnets leads to them shattering into shards.
Choking Hazard
Adult use only. Tiny parts pose a choking risk, leading to serious injuries. Keep out of reach of children and animals.
Warning for allergy sufferers
Studies show that the nickel plating (standard magnet coating) is a common allergen. For allergy sufferers, avoid direct skin contact or opt for encased magnets.
Heat warning
Control the heat. Heating the magnet to high heat will destroy its properties and pulling force.
Respect the power
Use magnets with awareness. Their powerful strength can shock even professionals. Stay alert and do not underestimate their force.
Pacemakers
Individuals with a ICD should keep an large gap from magnets. The magnetism can interfere with the operation of the life-saving device.
Threat to electronics
Equipment safety: Strong magnets can damage data carriers and sensitive devices (pacemakers, hearing aids, timepieces).
Machining danger
Fire warning: Neodymium dust is highly flammable. Do not process magnets without safety gear as this risks ignition.
Warning!
Looking for details? Check our post: Are neodymium magnets dangerous?
