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MP 62x42x25 / 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 030205

GTIN/EAN: 5906301812227

5.00

Diameter

62 mm [±0,1 mm]

internal diameter Ø

42 mm [±0,1 mm]

Height

25 mm [±0,1 mm]

Weight

306.31 g

Magnetization Direction

↑ axial

Load capacity

58.67 kg / 575.60 N

Magnetic Induction

389.14 mT / 3891 Gs

Coating

[NiCuNi] Nickel

technical details »

165.00 ZŁ with VAT / pcs + price for transport

134.15 ZŁ net + 23% VAT / pcs

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Technical - MP 62x42x25 / N38 - ring magnet

Specification / characteristics - MP 62x42x25 / N38 - ring magnet

properties

properties	values
Cat. no.	030205
GTIN/EAN	5906301812227
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	62 mm [±0,1 mm]
internal diameter Ø	42 mm [±0,1 mm]
Height	25 mm [±0,1 mm]
Weight	306.31 g
Magnetization Direction	↑ axial
Load capacity ~ ?	58.67 kg / 575.60 N
Magnetic Induction ~ ?	389.14 mT / 3891 Gs
Coating	[NiCuNi] Nickel
Manufacturing Tolerance	±0.1 mm

Magnetic properties of material N38

Specification / characteristics MP 62x42x25 / 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 product - report

These information represent the result of a mathematical analysis. Values were calculated on algorithms for the material Nd₂Fe₁₄B. Real-world performance may differ. Please consider these data as a preliminary roadmap during assembly planning.

Table 1: Static pull force (pull vs distance) - characteristics
MP 62x42x25 / N38

Distance (mm)	Induction (Gauss) / mT	Pull Force (kg/lbs/g/N)	Risk Status
0 mm	4472 Gs 447.2 mT	58.67 kg / 129.35 LBS 58670.0 g / 575.6 N	dangerous!
1 mm	4338 Gs 433.8 mT	55.21 kg / 121.72 LBS 55213.2 g / 541.6 N	dangerous!
2 mm	4201 Gs 420.1 mT	51.77 kg / 114.13 LBS 51768.5 g / 507.8 N	dangerous!
3 mm	4061 Gs 406.1 mT	48.39 kg / 106.69 LBS 48394.9 g / 474.8 N	dangerous!
5 mm	3781 Gs 378.1 mT	41.94 kg / 92.47 LBS 41942.4 g / 411.5 N	dangerous!
10 mm	3097 Gs 309.7 mT	28.15 kg / 62.06 LBS 28148.0 g / 276.1 N	dangerous!
15 mm	2485 Gs 248.5 mT	18.12 kg / 39.94 LBS 18118.5 g / 177.7 N	dangerous!
20 mm	1972 Gs 197.2 mT	11.41 kg / 25.16 LBS 11412.7 g / 112.0 N	dangerous!
30 mm	1239 Gs 123.9 mT	4.51 kg / 9.93 LBS 4505.2 g / 44.2 N	warning
50 mm	533 Gs 53.3 mT	0.83 kg / 1.84 LBS 832.4 g / 8.2 N	safe

Magnetic force decreases significantly with every mm of distance. Note that even a microscopic distance (e.g., dirt, paint, rust) strongly weakens the grip. Magnetic products work strongest during direct contact; distance drastically cuts the power. See how flashily the parameters fall, when the magnet does not touch tightly to the steel surface. When planning the arrangement, eliminate unnecessary gaps.

Table 2: Sliding force (wall)
MP 62x42x25 / N38

Distance (mm)	Friction coefficient	Pull Force (kg/lbs/g/N)
0 mm	Stal (~0.2)	11.73 kg / 25.87 LBS 11734.0 g / 115.1 N
1 mm	Stal (~0.2)	11.04 kg / 24.34 LBS 11042.0 g / 108.3 N
2 mm	Stal (~0.2)	10.35 kg / 22.83 LBS 10354.0 g / 101.6 N
3 mm	Stal (~0.2)	9.68 kg / 21.34 LBS 9678.0 g / 94.9 N
5 mm	Stal (~0.2)	8.39 kg / 18.49 LBS 8388.0 g / 82.3 N
10 mm	Stal (~0.2)	5.63 kg / 12.41 LBS 5630.0 g / 55.2 N
15 mm	Stal (~0.2)	3.62 kg / 7.99 LBS 3624.0 g / 35.6 N
20 mm	Stal (~0.2)	2.28 kg / 5.03 LBS 2282.0 g / 22.4 N
30 mm	Stal (~0.2)	0.90 kg / 1.99 LBS 902.0 g / 8.8 N
50 mm	Stal (~0.2)	0.17 kg / 0.37 LBS 166.0 g / 1.6 N

The following data calculates the estimated holding capacity needed to initiate the shifting of the magnet vertically on a vertical metal surface (assuming standard friction coefficient). This parameter is a function of the gap size between the magnet and the metal.

Table 3: Vertical assembly (shearing) - behavior on slippery surfaces
MP 62x42x25 / N38

Surface type	Friction coefficient / % Mocy	Max load (kg/lbs/g/N)
Raw steel	µ = 0.3 30% Nominalnej Siły	17.60 kg / 38.80 LBS 17601.0 g / 172.7 N
Painted steel (standard)	µ = 0.2 20% Nominalnej Siły	11.73 kg / 25.87 LBS 11734.0 g / 115.1 N
Oily/slippery steel	µ = 0.1 10% Nominalnej Siły	5.87 kg / 12.93 LBS 5867.0 g / 57.6 N
Magnet with anti-slip rubber	µ = 0.5 50% Nominalnej Siły	29.34 kg / 64.67 LBS 29335.0 g / 287.8 N

When placing a element on a upright wall (e.g., a board), it will maintain only approx. 1/5 of nominal attraction strength. Gravitational force as well as a weak degree of grip mean that products slip faster than they pull off. Planning a wall mount? Remember that the sliding force is much weaker than the maximum static pull force. On a slippery surface, the holder will give way down under a much lighter load. Using a rubber layer can effectively improve the result.

Table 4: Material efficiency (saturation) - power losses
MP 62x42x25 / N38

Steel thickness (mm)	% power	Real pull force (kg/lbs/g/N)
0.5 mm	3%	1.96 kg / 4.31 LBS 1955.7 g / 19.2 N
1 mm	8%	4.89 kg / 10.78 LBS 4889.2 g / 48.0 N
2 mm	17%	9.78 kg / 21.56 LBS 9778.3 g / 95.9 N
3 mm	25%	14.67 kg / 32.34 LBS 14667.5 g / 143.9 N
5 mm	42%	24.45 kg / 53.89 LBS 24445.8 g / 239.8 N
10 mm	83%	48.89 kg / 107.79 LBS 48891.7 g / 479.6 N
11 mm	92%	53.78 kg / 118.57 LBS 53780.8 g / 527.6 N
12 mm	100%	58.67 kg / 129.35 LBS 58670.0 g / 575.6 N

A too thin steel is incapable of focus the full magnetic flux, which squanders power of the magnet. Should you mount a strong magnet to a too thin substrate, the field will pass right through and the holding will be smaller. To achieve full efficiency of this magnet's potential, you require a sufficiently solid backing of steel. The saturation effect causes that on sheet metal structures (e.g., appliance housings), the magnet shows lower pull force. We advise picking the steel dimension according to the table below.

Table 5: Thermal stability (stability) - power drop
MP 62x42x25 / N38

Ambient temp. (°C)	Power loss	Remaining pull (kg/lbs/g/N)	Status
20 °C	0.0%	58.67 kg / 129.35 LBS 58670.0 g / 575.6 N	OK
40 °C	-2.2%	57.38 kg / 126.50 LBS 57379.3 g / 562.9 N	OK
60 °C	-4.4%	56.09 kg / 123.65 LBS 56088.5 g / 550.2 N	OK
80 °C	-6.6%	54.80 kg / 120.81 LBS 54797.8 g / 537.6 N
100 °C	-28.8%	41.77 kg / 92.09 LBS 41773.0 g / 409.8 N

Standard neodymium magnets irreversibly lose strength past the thermal threshold. Avoid high temperatures – excessive heat can irreversibly damage this product. With every degree above norm, the magnet's capacity briefly lowers. Refrain from using this product close to ovens exceeding its operating temperature limit. Ignoring the limit will result in irreversible degradation of magnetism.

*Technical advisory: Heat tolerance is determined by both grade, as well as the dimension ratios. Thin magnets (pancake types) risk losing magnetic properties sooner compared to rod magnets. Red status in the table indicates permanent field degradation for this specific geometry.

Table 6: Magnet-Magnet interaction (repulsion) - field range
MP 62x42x25 / N38

Gap (mm)	Attraction (kg/lbs) (N-S)	Shear Strength (kg/lbs/g/N)	Repulsion (kg/lbs) (N-N)
0 mm	264.93 kg / 584.07 LBS 5 588 Gs	39.74 kg / 87.61 LBS 39740 g / 389.8 N	N/A
1 mm	257.19 kg / 567.00 LBS 8 812 Gs	38.58 kg / 85.05 LBS 38578 g / 378.4 N	231.47 kg / 510.30 LBS ~0 Gs
2 mm	249.32 kg / 549.66 LBS 8 676 Gs	37.40 kg / 82.45 LBS 37398 g / 366.9 N	224.39 kg / 494.69 LBS ~0 Gs
3 mm	241.51 kg / 532.44 LBS 8 539 Gs	36.23 kg / 79.87 LBS 36227 g / 355.4 N	217.36 kg / 479.19 LBS ~0 Gs
5 mm	226.10 kg / 498.47 LBS 8 262 Gs	33.92 kg / 74.77 LBS 33915 g / 332.7 N	203.49 kg / 448.62 LBS ~0 Gs
10 mm	189.40 kg / 417.55 LBS 7 562 Gs	28.41 kg / 62.63 LBS 28409 g / 278.7 N	170.46 kg / 375.79 LBS ~0 Gs
20 mm	127.11 kg / 280.22 LBS 6 195 Gs	19.07 kg / 42.03 LBS 19066 g / 187.0 N	114.40 kg / 252.20 LBS ~0 Gs
50 mm	32.28 kg / 71.17 LBS 3 122 Gs	4.84 kg / 10.68 LBS 4843 g / 47.5 N	29.06 kg / 64.06 LBS ~0 Gs
60 mm	20.34 kg / 44.85 LBS 2 478 Gs	3.05 kg / 6.73 LBS 3052 g / 29.9 N	18.31 kg / 40.36 LBS ~0 Gs
70 mm	12.99 kg / 28.63 LBS 1 980 Gs	1.95 kg / 4.29 LBS 1948 g / 19.1 N	11.69 kg / 25.77 LBS ~0 Gs
80 mm	8.43 kg / 18.59 LBS 1 595 Gs	1.26 kg / 2.79 LBS 1265 g / 12.4 N	7.59 kg / 16.73 LBS ~0 Gs
90 mm	5.58 kg / 12.29 LBS 1 298 Gs	0.84 kg / 1.84 LBS 836 g / 8.2 N	5.02 kg / 11.06 LBS ~0 Gs
100 mm	3.76 kg / 8.29 LBS 1 065 Gs	0.56 kg / 1.24 LBS 564 g / 5.5 N	3.38 kg / 7.46 LBS ~0 Gs

Two strong neodymiums attract each other from a significantly greater distance than a magnet and sheet combination. The setup of magnet-to-magnet generates a stronger field and a larger range of operation. Planning to create a powerful holder? Utilize two neodymiums instead of a neodymium and a steel. Be careful that when bringing together two magnets, the impact force is huge. The levitation is marginally weaker than the attraction, but still impressive.
*The magnetic induction for N-N configuration is approximately ~0 Gs in the exact middle between the magnets (due to field cancellation).
Important: Results show sliding force of a pair of same neodymium magnets (friction coefficient ~0.15 for Ni-Ni coating).

Table 7: Protective zones (electronics) - warnings
MP 62x42x25 / N38

Object / Device	Limit (Gauss) / mT	Safe distance
Pacemaker	5 Gs (0.5 mT)	32.5 cm
Hearing aid	10 Gs (1.0 mT)	25.5 cm
Timepiece	20 Gs (2.0 mT)	20.0 cm
Phone / Smartphone	40 Gs (4.0 mT)	15.5 cm
Car key	50 Gs (5.0 mT)	14.0 cm
Payment card	400 Gs (40.0 mT)	6.0 cm
HDD hard drive	600 Gs (60.0 mT)	5.0 cm

Extremely neodym field is a serious hazard to electronics and pacemakers. These magnets produce a flux that destroys function of digital equipment. Be aware: the unseen radiation passes through tissues and housings. Exceptional care must be exercised by people with cochlear implants and drug dispensers. Also at risk are: mechanical watches, remotes, membranes, and displays. Do not bring the product near payment cards, hard drives, or sensitive navigation tools.

Table 8: Dynamics (cracking risk) - warning
MP 62x42x25 / N38

Start from (mm)	Speed (km/h)	Energy (J)
10 mm	17.65 km/h (4.90 m/s)	3.68 J
30 mm	25.31 km/h (7.03 m/s)	7.57 J
50 mm	31.49 km/h (8.75 m/s)	11.72 J
100 mm	44.16 km/h (12.27 m/s)	23.04 J

NdFeB products are delicate – a collision with steel can result in shattering. Control the attraction moment – a neodymium left loose speeds with massive force. Kinetic force can trigger coating fragments or painful pinches to fingers. Hold the magnet firmly during installation so it doesn't slam with momentum against the steel surface. A collision at high speed almost guarantees destruction of the neodymium. Wear eye protection when working with powerful specimens.

Table 9: Corrosion resistance
MP 62x42x25 / 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)

Neodymium magnets are highly susceptible to corrosion without proper protection. Note the thickness of the protective layer.

Table 10: Construction data (P_c)
MP 62x42x25 / N38

Parameter	Value	SI Unit / Description
Magnetic Flux	100 906 Mx	1009.1 µWb
P_c Coefficient	0.64	High (Stable)

Total magnetic flux passing through the magnet pole. Key data for generator designers as well as sensors. P_c value determines the working geometry.

Table 11: Physics of underwater searching
MP 62x42x25 / N38

Environment	Effective steel pull	Effect
Air (land)	58.67 kg	Standard
Water (riverbed)	67.18 kg (+8.51 kg buoyancy gain)	+14.5%

Warning: This magnet has a standard nickel coating. After use in water, it must be dried and maintained immediately, otherwise it will rust!

Contrary to myths, water does not block the magnetic field. Buoyancy helps in lifting finds.

1. Sliding resistance

*Caution: On a vertical wall, the magnet retains just a fraction of its perpendicular strength.

2. Efficiency vs thickness

*Thin metal sheet (e.g. computer case) significantly reduces the holding force.

3. Heat tolerance

*For N38 grade, the critical limit is 80°C.

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

chart generated for the permeance coefficient P_c (Permeance Coefficient) = 0.64

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

Chemical composition

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: 030205-2026

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MP 20x5x27 / N38 - ring magnet

33.00 ZŁ brutto / pcs

The ring-shaped magnet MP 62x42x25 / N38 is created for permanent mounting, where glue might fail or be insufficient. Thanks to the hole (often for a screw), this model enables quick installation to wood, wall, plastic, or metal. It is also often used in advertising for fixing signs and in workshops for organizing tools.

This material behaves more like porcelain than steel, so it doesn't forgive mistakes during mounting. One turn too many can destroy the magnet, so do it slowly. It's a good idea to use a rubber spacer under the screw head, which will cushion the stresses. 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 does not ensure full waterproofing. 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.

A screw or bolt with a thread diameter smaller than 42 mm fits this model. For magnets with a straight hole, a conical head can act like a wedge and burst the magnet. Always check that the screw head is not larger than the outer diameter of the magnet (62 mm), so it doesn't protrude beyond the outline.

The presented product is a ring magnet with dimensions Ø62 mm (outer diameter) and height 25 mm. The key parameter here is the holding force amounting to approximately 58.67 kg (force ~575.60 N). The product has a [NiCuNi] coating and is made of NdFeB material. Inner hole dimension: 42 mm.

These magnets are magnetized axially (through the thickness), which means one flat side is the N pole and the other is S. If you want two such magnets screwed with cones facing each other (faces) to attract, you must connect them with opposite poles (N to S). When ordering a larger quantity, magnets are usually packed in stacks, where they are already naturally paired.

Strengths as well as weaknesses of Nd₂Fe₁₄B magnets.

Advantages

Apart from their superior holding force, neodymium magnets have these key benefits:

They have stable power, and over around ten years their attraction force decreases symbolically – ~1% (according to theory),
They maintain their magnetic properties even under strong external field,
By using a reflective coating of gold, the element presents an professional look,
Neodymium magnets deliver maximum magnetic induction on a small area, which allows for strong attraction,
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 versatility in forming and the capacity to modify to individual projects,
Key role in advanced technology sectors – they are utilized in mass storage devices, motor assemblies, advanced medical instruments, as well as technologically advanced constructions.
Thanks to concentrated force, small magnets offer high operating force, in miniature format,

Cons

Disadvantages of NdFeB magnets:

To avoid cracks upon strong impacts, we recommend using special steel housings. Such a solution protects the magnet and simultaneously improves its durability.
Neodymium magnets demagnetize when exposed to high temperatures. After reaching 80°C, many of them experience permanent drop of power (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 very resistant to heat
Due to the susceptibility of magnets to corrosion in a humid environment, we advise using waterproof magnets made of rubber, plastic or other material stable to moisture, in case of application outdoors
Limited possibility of creating nuts in the magnet and complex forms - recommended is a housing - magnet mounting.
Health risk resulting from small fragments of magnets can be dangerous, if swallowed, which becomes key in the context of child safety. Furthermore, small elements of these magnets are able to be problematic in diagnostics medical in case of swallowing.
High unit price – neodymium magnets have a higher price than other types of magnets (e.g. ferrite), which hinders application in large quantities

Holding force characteristics

Maximum magnetic pulling force – what affects it?

The lifting capacity listed is a theoretical maximum value executed under specific, ideal conditions:

using a plate made of mild steel, functioning as a circuit closing element
possessing a massiveness of minimum 10 mm to ensure full flux closure
with a plane free of scratches
under conditions of gap-free contact (metal-to-metal)
during detachment in a direction vertical to the mounting surface
in neutral thermal conditions

Determinants of lifting force in real conditions

It is worth knowing that the application force will differ depending on the following factors, in order of importance:

Gap between surfaces – every millimeter of distance (caused e.g. by varnish or dirt) significantly weakens the magnet efficiency, often by half at just 0.5 mm.
Load vector – highest force is obtained only during perpendicular pulling. The force required to slide of the magnet along the surface is usually several times smaller (approx. 1/5 of the lifting capacity).
Metal thickness – the thinner the sheet, the weaker the hold. Magnetic flux passes through the material instead of converting into lifting capacity.
Steel grade – the best choice is high-permeability steel. Cast iron may have worse magnetic properties.
Smoothness – ideal contact is obtained only on smooth steel. Any scratches and bumps create air cushions, weakening the magnet.
Thermal factor – hot environment weakens pulling force. Too high temperature can permanently damage the magnet.

Holding force was checked on a smooth steel plate of 20 mm thickness, when a perpendicular force was applied, in contrast under attempts to slide the magnet the load capacity is reduced by as much as 75%. Additionally, even a minimal clearance between the magnet and the plate lowers the holding force.

Safe handling of NdFeB magnets

Magnetic media

Intense magnetic fields can corrupt files on credit cards, hard drives, and storage devices. Keep a distance of min. 10 cm.

Dust explosion hazard

Drilling and cutting of neodymium magnets poses a fire risk. Neodymium dust reacts violently with oxygen and is difficult to extinguish.

Do not overheat magnets

Keep cool. Neodymium magnets are susceptible to temperature. If you need resistance above 80°C, look for HT versions (H, SH, UH).

Sensitization to coating

Some people suffer from a hypersensitivity to nickel, which is the common plating for neodymium magnets. Frequent touching may cause dermatitis. We recommend wear safety gloves.

Implant safety

Individuals with a ICD have to maintain an absolute distance from magnets. The magnetism can disrupt the operation of the implant.

Keep away from electronics

An intense magnetic field negatively affects the functioning of magnetometers in phones and GPS navigation. Maintain magnets near a smartphone to prevent damaging the sensors.

Immense force

Before starting, read the rules. Uncontrolled attraction can break the magnet or hurt your hand. Think ahead.

Fragile material

Beware of splinters. Magnets can fracture upon uncontrolled impact, ejecting sharp fragments into the air. Wear goggles.

Crushing force

Pinching hazard: The attraction force is so great that it can result in blood blisters, crushing, and broken bones. Use thick gloves.

Danger to the youngest

Product intended for adults. Tiny parts pose a choking risk, leading to severe trauma. Store away from children and animals.

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

MP 62x42x25 / N38 - ring magnet

Technical - MP 62x42x25 / N38 - ring magnet

Magnetic properties of material N38

Physical properties of sintered neodymium magnets Nd2Fe14B at 20°C

Engineering simulation of the product - report

Table 1: Static pull force (pull vs distance) - characteristics MP 62x42x25 / N38

Table 2: Sliding force (wall) MP 62x42x25 / N38

Table 3: Vertical assembly (shearing) - behavior on slippery surfaces MP 62x42x25 / N38

Table 4: Material efficiency (saturation) - power losses MP 62x42x25 / N38

Table 5: Thermal stability (stability) - power drop MP 62x42x25 / N38

Table 6: Magnet-Magnet interaction (repulsion) - field range MP 62x42x25 / N38

Table 7: Protective zones (electronics) - warnings MP 62x42x25 / N38

Table 8: Dynamics (cracking risk) - warning MP 62x42x25 / N38

Table 9: Corrosion resistance MP 62x42x25 / N38

Table 10: Construction data (Pc) MP 62x42x25 / N38

Table 11: Physics of underwater searching MP 62x42x25 / N38

1. Sliding resistance

2. Efficiency vs thickness

3. Heat tolerance

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

Chemical composition

Ecology and recycling (GPSR)

Pulling force

Field Strength

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MP 20x5x27 / N38 - ring magnet

Strengths as well as weaknesses of Nd2Fe14B magnets.

Advantages

Cons

Holding force characteristics

Maximum magnetic pulling force – what affects it?

Determinants of lifting force in real conditions

Safe handling of NdFeB magnets

Magnetic media

Dust explosion hazard

Do not overheat magnets

Sensitization to coating

Implant safety

Keep away from electronics

Immense force

Fragile material

Crushing force

Danger to the youngest

Physical properties of sintered neodymium magnets Nd₂Fe₁₄B at 20°C

Table 1: Static pull force (pull vs distance) - characteristics
MP 62x42x25 / N38

Table 2: Sliding force (wall)
MP 62x42x25 / N38

Table 3: Vertical assembly (shearing) - behavior on slippery surfaces
MP 62x42x25 / N38

Table 4: Material efficiency (saturation) - power losses
MP 62x42x25 / N38

Table 5: Thermal stability (stability) - power drop
MP 62x42x25 / N38

Table 6: Magnet-Magnet interaction (repulsion) - field range
MP 62x42x25 / N38

Table 7: Protective zones (electronics) - warnings
MP 62x42x25 / N38

Table 8: Dynamics (cracking risk) - warning
MP 62x42x25 / N38

Table 9: Corrosion resistance
MP 62x42x25 / N38

Table 10: Construction data (P_c)
MP 62x42x25 / N38

Table 11: Physics of underwater searching
MP 62x42x25 / N38

Strengths as well as weaknesses of Nd₂Fe₁₄B magnets.