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MP 40x22x10 / N38 - ring magnet

Name: Dhit sp. z o.o.
Address: Kościuszki 6A, Ożarów Mazowiecki, Poland, 05-850, PL
Telephone: +48 22 499 98 98
Price range: PLN 1-6500
Rating: 5

ring magnet

Catalog no 030344

GTIN/EAN: 5906301812296

5.00

Diameter

40 mm [±0,1 mm]

internal diameter Ø

22 mm [±0,1 mm]

Height

10 mm [±0,1 mm]

Weight

65.74 g

Magnetization Direction

↑ axial

Load capacity

19.34 kg / 189.71 N

Magnetic Induction

277.22 mT / 2772 Gs

Coating

[NiCuNi] Nickel

technical parameters »

40.59 ZŁ with VAT / pcs + price for transport

33.00 ZŁ net + 23% VAT / pcs

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Technical details - MP 40x22x10 / N38 - ring magnet

Specification / characteristics - MP 40x22x10 / N38 - ring magnet

properties

properties	values
Cat. no.	030344
GTIN/EAN	5906301812296
Production/Distribution	Dhit sp. z o.o. ul. Zielona 14 05-850 Ożarów Mazowiecki PL
Country of origin	Poland / China / Germany
Customs code	85059029
Diameter	40 mm [±0,1 mm]
internal diameter Ø	22 mm [±0,1 mm]
Height	10 mm [±0,1 mm]
Weight	65.74 g
Magnetization Direction	↑ axial
Load capacity ~ ?	19.34 kg / 189.71 N
Magnetic Induction ~ ?	277.22 mT / 2772 Gs
Coating	[NiCuNi] Nickel
Manufacturing Tolerance	±0.1 mm

Magnetic properties of material N38

Specification / characteristics MP 40x22x10 / N38 - ring magnet

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

Engineering simulation of the magnet - report

These data constitute the outcome of a mathematical calculation. Values are based on models for the material Nd₂Fe₁₄B. Actual performance might slightly differ from theoretical values. Treat these data as a preliminary roadmap during assembly planning.

Table 1: Static pull force (pull vs distance) - characteristics
MP 40x22x10 / N38

Distance (mm)	Induction (Gauss) / mT	Pull Force (kg/lbs/g/N)	Risk Status
0 mm	5269 Gs 526.9 mT	19.34 kg / 42.64 lbs 19340.0 g / 189.7 N	crushing
1 mm	5005 Gs 500.5 mT	17.46 kg / 38.48 lbs 17455.9 g / 171.2 N	crushing
2 mm	4739 Gs 473.9 mT	15.65 kg / 34.50 lbs 15647.5 g / 153.5 N	crushing
3 mm	4475 Gs 447.5 mT	13.95 kg / 30.75 lbs 13950.0 g / 136.8 N	crushing
5 mm	3960 Gs 396.0 mT	10.93 kg / 24.09 lbs 10927.7 g / 107.2 N	crushing
10 mm	2832 Gs 283.2 mT	5.59 kg / 12.32 lbs 5589.2 g / 54.8 N	medium risk
15 mm	1990 Gs 199.0 mT	2.76 kg / 6.09 lbs 2760.5 g / 27.1 N	medium risk
20 mm	1407 Gs 140.7 mT	1.38 kg / 3.04 lbs 1379.2 g / 13.5 N	weak grip
30 mm	745 Gs 74.5 mT	0.39 kg / 0.85 lbs 386.2 g / 3.8 N	weak grip
50 mm	268 Gs 26.8 mT	0.05 kg / 0.11 lbs 50.1 g / 0.5 N	weak grip

Magnetic force decreases significantly with every mm of gap. Note that even a microscopic distance (e.g., dirt, varnish, veneer) significantly diminishes the holding power. Magnets work strongest during direct contact; distance drastically cuts the power. Analyze how quickly the pull force drop, when the magnet does not adhere tightly to the steel surface. When designing the assembly, discard unnecessary gaps.

Table 2: Shear load (vertical surface)
MP 40x22x10 / N38

Distance (mm)	Friction coefficient	Pull Force (kg/lbs/g/N)
0 mm	Stal (~0.2)	3.87 kg / 8.53 lbs 3868.0 g / 37.9 N
1 mm	Stal (~0.2)	3.49 kg / 7.70 lbs 3492.0 g / 34.3 N
2 mm	Stal (~0.2)	3.13 kg / 6.90 lbs 3130.0 g / 30.7 N
3 mm	Stal (~0.2)	2.79 kg / 6.15 lbs 2790.0 g / 27.4 N
5 mm	Stal (~0.2)	2.19 kg / 4.82 lbs 2186.0 g / 21.4 N
10 mm	Stal (~0.2)	1.12 kg / 2.46 lbs 1118.0 g / 11.0 N
15 mm	Stal (~0.2)	0.55 kg / 1.22 lbs 552.0 g / 5.4 N
20 mm	Stal (~0.2)	0.28 kg / 0.61 lbs 276.0 g / 2.7 N
30 mm	Stal (~0.2)	0.08 kg / 0.17 lbs 78.0 g / 0.8 N
50 mm	Stal (~0.2)	0.01 kg / 0.02 lbs 10.0 g / 0.1 N

The table below indicates the approximate weight limit sufficient to initiate the shifting of the magnet vertically against a upright metal surface (considering typical friction). This parameter is a function of the separation distance between the magnet and the metal.

Table 3: Wall mounting (shearing) - vertical pull
MP 40x22x10 / N38

Surface type	Friction coefficient / % Mocy	Max load (kg/lbs/g/N)
Raw steel	µ = 0.3 30% Nominalnej Siły	5.80 kg / 12.79 lbs 5802.0 g / 56.9 N
Painted steel (standard)	µ = 0.2 20% Nominalnej Siły	3.87 kg / 8.53 lbs 3868.0 g / 37.9 N
Oily/slippery steel	µ = 0.1 10% Nominalnej Siły	1.93 kg / 4.26 lbs 1934.0 g / 19.0 N
Magnet with anti-slip rubber	µ = 0.5 50% Nominalnej Siły	9.67 kg / 21.32 lbs 9670.0 g / 94.9 N

When placing a element on a vertical wall (e.g., a car body), it you can count on only about 20%-30% of its maximum pull force. Gravitational force as well as a weak degree of grip cause that products slide down easier than they detach. Designing a vertical fastening? Consider that the sliding force is noticeably lower than the perpendicular breakaway force. On a smooth steel, the element will give way down under a significantly smaller weight. Utilizing a rubberized layer can significantly improve the result.

Table 4: Steel thickness (saturation) - power losses
MP 40x22x10 / N38

Steel thickness (mm)	% power	Real pull force (kg/lbs/g/N)
0.5 mm	5%	0.97 kg / 2.13 lbs 967.0 g / 9.5 N
1 mm	13%	2.42 kg / 5.33 lbs 2417.5 g / 23.7 N
2 mm	25%	4.84 kg / 10.66 lbs 4835.0 g / 47.4 N
3 mm	38%	7.25 kg / 15.99 lbs 7252.5 g / 71.1 N
5 mm	63%	12.09 kg / 26.65 lbs 12087.5 g / 118.6 N
10 mm	100%	19.34 kg / 42.64 lbs 19340.0 g / 189.7 N
11 mm	100%	19.34 kg / 42.64 lbs 19340.0 g / 189.7 N
12 mm	100%	19.34 kg / 42.64 lbs 19340.0 g / 189.7 N

A thin sheet is unable to absorb the full magnetic flux, which wastes potential of the magnet. Should you install a neodymium to a too thin substrate, the magnetism will pass right through and the pull force will drop sharply. To achieve the maximum of this neodymium's potential, you require a sufficiently solid backing of metal. The material oversaturation means that on thin elements (e.g., car bodies), the product holds weaker. We suggest choosing the steel cross-section based on the following data.

Table 5: Thermal stability (stability) - resistance threshold
MP 40x22x10 / N38

Ambient temp. (°C)	Power loss	Remaining pull (kg/lbs/g/N)	Status
20 °C	0.0%	19.34 kg / 42.64 lbs 19340.0 g / 189.7 N	OK
40 °C	-2.2%	18.91 kg / 41.70 lbs 18914.5 g / 185.6 N	OK
60 °C	-4.4%	18.49 kg / 40.76 lbs 18489.0 g / 181.4 N	OK
80 °C	-6.6%	18.06 kg / 39.82 lbs 18063.6 g / 177.2 N
100 °C	-28.8%	13.77 kg / 30.36 lbs 13770.1 g / 135.1 N

Classic neodymiums irreversibly lose parameters above the temperature limit. Protect against heat – heat can permanently destroy this magnet. As the temperature rises, the magnet's power briefly decreases. Avoid using this magnet close to ovens exceeding its working range. Too high temperature will lead to permanent loss of magnetic properties.

*Engineering note: Temperature resistance is determined by both grade, and the Permeance Coefficient Pc. Low-profile magnets (low Pc) are more susceptible to demagnetization at lower temperatures than taller cylinders. The danger warning in the table points to permanent field degradation for this specific geometry.

Table 6: Magnet-Magnet interaction (repulsion) - field collision
MP 40x22x10 / N38

Gap (mm)	Attraction (kg/lbs) (N-S)	Shear Force (kg/lbs/g/N)	Repulsion (kg/lbs) (N-N)
0 mm	171.37 kg / 377.80 lbs 5 920 Gs	25.71 kg / 56.67 lbs 25705 g / 252.2 N	N/A
1 mm	163.01 kg / 359.38 lbs 10 277 Gs	24.45 kg / 53.91 lbs 24452 g / 239.9 N	146.71 kg / 323.44 lbs ~0 Gs
2 mm	154.67 kg / 341.00 lbs 10 011 Gs	23.20 kg / 51.15 lbs 23201 g / 227.6 N	139.21 kg / 306.90 lbs ~0 Gs
3 mm	146.55 kg / 323.08 lbs 9 744 Gs	21.98 kg / 48.46 lbs 21982 g / 215.6 N	131.89 kg / 290.77 lbs ~0 Gs
5 mm	131.00 kg / 288.81 lbs 9 213 Gs	19.65 kg / 43.32 lbs 19650 g / 192.8 N	117.90 kg / 259.92 lbs ~0 Gs
10 mm	96.83 kg / 213.47 lbs 7 921 Gs	14.52 kg / 32.02 lbs 14524 g / 142.5 N	87.15 kg / 192.12 lbs ~0 Gs
20 mm	49.53 kg / 109.18 lbs 5 665 Gs	7.43 kg / 16.38 lbs 7429 g / 72.9 N	44.57 kg / 98.27 lbs ~0 Gs
50 mm	6.33 kg / 13.95 lbs 2 025 Gs	0.95 kg / 2.09 lbs 949 g / 9.3 N	5.69 kg / 12.55 lbs ~0 Gs
60 mm	3.42 kg / 7.55 lbs 1 489 Gs	0.51 kg / 1.13 lbs 513 g / 5.0 N	3.08 kg / 6.79 lbs ~0 Gs
70 mm	1.94 kg / 4.27 lbs 1 120 Gs	0.29 kg / 0.64 lbs 290 g / 2.8 N	1.74 kg / 3.84 lbs ~0 Gs
80 mm	1.14 kg / 2.52 lbs 860 Gs	0.17 kg / 0.38 lbs 171 g / 1.7 N	1.03 kg / 2.27 lbs ~0 Gs
90 mm	0.70 kg / 1.54 lbs 673 Gs	0.10 kg / 0.23 lbs 105 g / 1.0 N	0.63 kg / 1.39 lbs ~0 Gs
100 mm	0.44 kg / 0.98 lbs 536 Gs	0.07 kg / 0.15 lbs 67 g / 0.7 N	0.40 kg / 0.88 lbs ~0 Gs

Two magnets attract each other from a much further distance than a neodymium and metal setup. The setup of two magnets creates a more powerful interaction and a further horizon of operation. Want to build a solid fastener? Apply two magnets instead of one magnet and a steel. Be careful that when connecting a pair of magnets, the pinch force is massive. The repulsion force is a bit weaker than the attraction, but still large.
*Field value between like poles is approximately ~0 Gs at the geometric center between the magnets (due to field cancellation).
Note: Estimates apply to friction force of two matching neodymium magnets (friction coefficient ~0.15 for Ni-Ni plating).

Table 7: Hazards (electronics) - precautionary measures
MP 40x22x10 / N38

Object / Device	Limit (Gauss) / mT	Safe distance
Pacemaker	5 Gs (0.5 mT)	24.0 cm
Hearing aid	10 Gs (1.0 mT)	18.5 cm
Timepiece	20 Gs (2.0 mT)	14.5 cm
Mobile device	40 Gs (4.0 mT)	11.0 cm
Remote	50 Gs (5.0 mT)	10.5 cm
Payment card	400 Gs (40.0 mT)	4.5 cm
HDD hard drive	600 Gs (60.0 mT)	3.5 cm

Powerful magnet radiation poses a real danger to IT equipment as well as medical implants. These NdFeB products produce a flux that destroys function of sensitive medical devices. Remember: the unseen radiation acts through matter and housings. Special caution must be taken by people with cochlear implants and insulin pumps. The risk also applies to: automatic timepieces, remotes, membranes, and screens. Avoid contact with magnetic cards, HDD media, or precise measuring instruments.

Table 8: Collisions (kinetic energy) - warning
MP 40x22x10 / N38

Start from (mm)	Speed (km/h)	Energy (J)
10 mm	20.18 km/h (5.61 m/s)	1.03 J
30 mm	30.33 km/h (8.43 m/s)	2.33 J
50 mm	38.74 km/h (10.76 m/s)	3.81 J
100 mm	54.70 km/h (15.20 m/s)	7.59 J

Neodymium magnets are delicate – a violent impact against metal causes immediate chipping. Watch the impact speed – a neodymium left loose speeds with massive force. Striking energy can destroy the magnet or dangerous crushing to fingers. Be sure to control the product during bringing near metal so it doesn't slam with momentum against the steel surface. A contact at a velocity of dozens of km/h almost guarantees destruction of the magnet. Wear eye protection when handling with large magnets.

Table 9: Surface protection spec
MP 40x22x10 / 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)

The SST (salt spray test) is an industry standard for determining coating lifespan in harsh conditions. Improper coating selection is the most common cause of magnet failure over time.

Table 10: Electrical data (Flux)
MP 40x22x10 / N38

Parameter	Value	SI Unit / Description
Magnetic Flux	54 070 Mx	540.7 µWb
P_c Coefficient	0.81	High (Stable)

Total magnetic flux passing through the pole surface. Essential parameter when building generators and motors. The P_c coefficient determines the magnet's operating point.

Table 11: Underwater work (magnet fishing)
MP 40x22x10 / N38

Environment	Effective steel pull	Effect
Air (land)	19.34 kg	Standard
Water (riverbed)	22.14 kg (+2.80 kg buoyancy gain)	+14.5%

Corrosion warning: Standard nickel requires drying after every contact with moisture; lack of maintenance will lead to rust spots.

Contrary to myths, water does not block the magnetic field. As a result, your magnet will pull a heavier object from the bottom than if you lifted it in the air.

1. Wall mount (shear)

*Note: On a vertical surface, the magnet holds merely ~20% of its perpendicular strength.

2. Steel thickness impact

*Thin metal sheet (e.g. computer case) severely limits the holding force.

3. Heat tolerance

*For N38 material, the max working temp is 80°C.

4. Demagnetization curve and operating point (B-H)

chart generated for the permeance coefficient P_c (Permeance Coefficient) = 0.81

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 P_c (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 P_c 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.

Technical specification and ecology

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

Safety card (GPSR)

responsible entity

Dhit sp. z o.o.

ul. Kościuszki 6A, 05-850 Ożarów Mazowiecki

tel: +48 22 499 98 98 | e-mail: bok@dhit.pl

batch number/type

id: 030344-2026

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The ring-shaped magnet MP 40x22x10 / N38 is created for permanent mounting, where glue might fail or be insufficient. Mounting is clean and reversible, unlike gluing. It is also often used in advertising for fixing signs and in workshops for organizing tools.

This is a crucial issue when working with model MP 40x22x10 / N38. Neodymium magnets are sintered ceramics, which means they are very brittle and inelastic. One turn too many can destroy the magnet, so do it slowly. The flat screw head should evenly press the magnet. Remember: cracking during assembly results from material properties, not a product defect.

These magnets are coated with standard Ni-Cu-Ni plating, which protects them in indoor conditions, but is not sufficient for rain. Damage to the protective layer during assembly is the most common cause of rusting. If you must use it outside, paint it with anti-corrosion paint after mounting.

The inner hole diameter determines the maximum size of the mounting element. For magnets with a straight hole, a conical head can act like a wedge and burst the magnet. Aesthetic mounting requires selecting the appropriate head size.

It is a magnetic ring with a diameter of 40 mm and thickness 10 mm. The key parameter here is the lifting capacity amounting to approximately 19.34 kg (force ~189.71 N). The mounting hole diameter is precisely 22 mm.

These magnets are magnetized axially (through the thickness), which means one flat side is the N pole and the other is S. In the case of connecting two rings, make sure one is turned the right way. We do not offer paired sets with marked poles in this category, but they are easy to match manually.

Advantages as well as disadvantages of Nd₂Fe₁₄B magnets.

Pros

In addition to their magnetic capacity, neodymium magnets provide the following advantages:

They retain attractive force for nearly ten years – the loss is just ~1% (according to analyses),
They are extremely resistant to demagnetization induced by external field influence,
In other words, due to the shiny finish of nickel, the element becomes visually attractive,
They feature high magnetic induction at the operating surface, which improves attraction properties,
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 exact modeling as well as adapting to concrete applications,
Wide application in future technologies – they find application in mass storage devices, electric motors, precision medical tools, also multitasking production systems.
Compactness – despite small sizes they provide effective action, making them ideal for precision applications

Weaknesses

Drawbacks and weaknesses of neodymium magnets and proposals for their use:

They are prone to damage upon heavy impacts. To avoid cracks, it is worth securing magnets using a steel holder. Such protection not only shields the magnet but also improves its resistance to damage
When exposed to high temperature, neodymium magnets experience a drop in strength. 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
Magnets exposed to a humid environment can rust. Therefore while using outdoors, we suggest using waterproof magnets made of rubber, plastic or other material protecting against moisture
We recommend cover - magnetic mechanism, due to difficulties in creating threads inside the magnet and complex forms.
Potential hazard resulting from small fragments of magnets can be dangerous, if swallowed, which gains importance in the aspect of protecting the youngest. Additionally, small elements of these devices are able to disrupt the diagnostic process medical when they are in the body.
With budget limitations the cost of neodymium magnets can be a barrier,

Lifting parameters

Detachment force of the magnet in optimal conditions – what affects it?

The specified lifting capacity represents the limit force, obtained under optimal environment, specifically:

with the use of a yoke made of special test steel, guaranteeing full magnetic saturation
with a cross-section minimum 10 mm
with a surface free of scratches
with direct contact (without impurities)
during pulling in a direction perpendicular to the plane
at room temperature

Practical lifting capacity: influencing factors

Holding efficiency is influenced by working environment parameters, including (from most important):

Space between surfaces – every millimeter of separation (caused e.g. by veneer or dirt) drastically reduces the pulling force, often by half at just 0.5 mm.
Loading method – catalog parameter refers to detachment vertically. When slipping, the magnet exhibits significantly lower power (typically approx. 20-30% of maximum force).
Steel thickness – insufficiently thick plate does not accept the full field, causing part of the power to be lost to the other side.
Chemical composition of the base – low-carbon steel gives the best results. Alloy steels reduce magnetic properties and holding force.
Base smoothness – the smoother and more polished the plate, the better the adhesion and higher the lifting capacity. Unevenness acts like micro-gaps.
Heat – neodymium magnets have a negative temperature coefficient. When it is hot they are weaker, and in frost gain strength (up to a certain limit).

Lifting capacity testing was carried out on plates with a smooth surface of suitable thickness, under perpendicular forces, in contrast under shearing force the holding force is lower. Additionally, even a slight gap between the magnet’s surface and the plate reduces the lifting capacity.

Precautions when working with neodymium magnets

Dust is flammable

Powder produced during grinding of magnets is combustible. Avoid drilling into magnets without proper cooling and knowledge.

Bone fractures

Danger of trauma: The attraction force is so immense that it can cause hematomas, crushing, and even bone fractures. Protective gloves are recommended.

Metal Allergy

Certain individuals experience a hypersensitivity to nickel, which is the typical protective layer for neodymium magnets. Frequent touching might lead to dermatitis. We recommend use protective gloves.

Safe distance

Do not bring magnets close to a wallet, computer, or TV. The magnetism can destroy these devices and wipe information from cards.

Swallowing risk

Product intended for adults. Small elements can be swallowed, causing serious injuries. Keep out of reach of children and animals.

Powerful field

Before use, read the rules. Uncontrolled attraction can destroy the magnet or injure your hand. Think ahead.

Keep away from electronics

An intense magnetic field negatively affects the operation of magnetometers in smartphones and GPS navigation. Keep magnets near a device to avoid breaking the sensors.

Magnets are brittle

Protect your eyes. Magnets can explode upon uncontrolled impact, launching sharp fragments into the air. Eye protection is mandatory.

Demagnetization risk

Watch the temperature. Heating the magnet above 80 degrees Celsius will permanently weaken its magnetic structure and strength.

Warning for heart patients

Medical warning: Neodymium magnets can turn off heart devices and defibrillators. Stay away if you have electronic implants.

Danger! Want to know more? Check our post: Are neodymium magnets dangerous?

MP 40x22x10 / N38 - ring magnet

Technical details - MP 40x22x10 / N38 - ring magnet

Magnetic properties of material N38

Physical properties of sintered neodymium magnets Nd2Fe14B at 20°C

Engineering simulation of the magnet - report

Table 1: Static pull force (pull vs distance) - characteristics MP 40x22x10 / N38

Table 2: Shear load (vertical surface) MP 40x22x10 / N38

Table 3: Wall mounting (shearing) - vertical pull MP 40x22x10 / N38

Table 4: Steel thickness (saturation) - power losses MP 40x22x10 / N38

Table 5: Thermal stability (stability) - resistance threshold MP 40x22x10 / N38

Table 6: Magnet-Magnet interaction (repulsion) - field collision MP 40x22x10 / N38

Table 7: Hazards (electronics) - precautionary measures MP 40x22x10 / N38

Table 8: Collisions (kinetic energy) - warning MP 40x22x10 / N38

Table 9: Surface protection spec MP 40x22x10 / N38

Table 10: Electrical data (Flux) MP 40x22x10 / N38

Table 11: Underwater work (magnet fishing) MP 40x22x10 / N38

1. Wall mount (shear)

2. Steel thickness impact

3. Heat tolerance

4. Demagnetization curve and operating point (B-H)

Material specification

Ecology and recycling (GPSR)

Pulling force

Magnetic Induction

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Advantages as well as disadvantages of Nd2Fe14B magnets.

Pros

Weaknesses

Lifting parameters

Detachment force of the magnet in optimal conditions – what affects it?

Practical lifting capacity: influencing factors

Precautions when working with neodymium magnets

Dust is flammable

Bone fractures

Metal Allergy

Safe distance

Swallowing risk

Powerful field

Keep away from electronics

Magnets are brittle

Demagnetization risk

Warning for heart patients

Physical properties of sintered neodymium magnets Nd₂Fe₁₄B at 20°C

Table 1: Static pull force (pull vs distance) - characteristics
MP 40x22x10 / N38

Table 2: Shear load (vertical surface)
MP 40x22x10 / N38

Table 3: Wall mounting (shearing) - vertical pull
MP 40x22x10 / N38

Table 4: Steel thickness (saturation) - power losses
MP 40x22x10 / N38

Table 5: Thermal stability (stability) - resistance threshold
MP 40x22x10 / N38

Table 6: Magnet-Magnet interaction (repulsion) - field collision
MP 40x22x10 / N38

Table 7: Hazards (electronics) - precautionary measures
MP 40x22x10 / N38

Table 8: Collisions (kinetic energy) - warning
MP 40x22x10 / N38

Table 9: Surface protection spec
MP 40x22x10 / N38

Table 10: Electrical data (Flux)
MP 40x22x10 / N38

Table 11: Underwater work (magnet fishing)
MP 40x22x10 / N38

Advantages as well as disadvantages of Nd₂Fe₁₄B magnets.