Product available Ships tomorrow

MP 25x5x5 / 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 030193

GTIN/EAN: 5906301812104

5.00

Diameter

25 mm [±0,1 mm]

internal diameter Ø

5 mm [±0,1 mm]

Height

5 mm [±0,1 mm]

Weight

17.67 g

Magnetization Direction

↑ axial

Load capacity

7.66 kg / 75.12 N

Magnetic Induction

230.20 mT / 2302 Gs

Coating

[NiCuNi] Nickel

see specifications »

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Technical details - MP 25x5x5 / N38 - ring magnet

Specification / characteristics - MP 25x5x5 / N38 - ring magnet

properties

properties	values
Cat. no.	030193
GTIN/EAN	5906301812104
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	25 mm [±0,1 mm]
internal diameter Ø	5 mm [±0,1 mm]
Height	5 mm [±0,1 mm]
Weight	17.67 g
Magnetization Direction	↑ axial
Load capacity ~ ?	7.66 kg / 75.12 N
Magnetic Induction ~ ?	230.20 mT / 2302 Gs
Coating	[NiCuNi] Nickel
Manufacturing Tolerance	±0.1 mm

Magnetic properties of material N38

Specification / characteristics MP 25x5x5 / 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

Physical analysis of the assembly - data

Presented values represent the direct effect of a engineering simulation. Results were calculated on algorithms for the material Nd₂Fe₁₄B. Actual performance might slightly differ from theoretical values. Please consider these data as a preliminary roadmap during assembly planning.

Table 1: Static force (force vs gap) - interaction chart
MP 25x5x5 / N38

Distance (mm)	Induction (Gauss) / mT	Pull Force (kg/lbs/g/N)	Risk Status
0 mm	5777 Gs 577.7 mT	7.66 kg / 16.89 LBS 7660.0 g / 75.1 N	strong
1 mm	5310 Gs 531.0 mT	6.47 kg / 14.27 LBS 6471.0 g / 63.5 N	strong
2 mm	4846 Gs 484.6 mT	5.39 kg / 11.88 LBS 5388.6 g / 52.9 N	strong
3 mm	4397 Gs 439.7 mT	4.44 kg / 9.78 LBS 4437.9 g / 43.5 N	strong
5 mm	3576 Gs 357.6 mT	2.93 kg / 6.47 LBS 2934.8 g / 28.8 N	strong
10 mm	2073 Gs 207.3 mT	0.99 kg / 2.17 LBS 985.9 g / 9.7 N	safe
15 mm	1231 Gs 123.1 mT	0.35 kg / 0.77 LBS 347.9 g / 3.4 N	safe
20 mm	773 Gs 77.3 mT	0.14 kg / 0.30 LBS 137.0 g / 1.3 N	safe
30 mm	356 Gs 35.6 mT	0.03 kg / 0.06 LBS 29.0 g / 0.3 N	safe
50 mm	115 Gs 11.5 mT	0.00 kg / 0.01 LBS 3.0 g / 0.0 N	safe

Magnetic force weakens sharply with every mm of spacing. Remember that even a microscopic distance (e.g., dirt, varnish, dust) noticeably diminishes the holding power. Magnetic products work most effectively during direct contact; air break kills the force. Notice how flashily the load capacity fall, when the product does not adhere flatly to the steel surface. When designing the mounting, discard additional spacers.

Table 2: Shear capacity (wall)
MP 25x5x5 / N38

Distance (mm)	Friction coefficient	Pull Force (kg/lbs/g/N)
0 mm	Stal (~0.2)	1.53 kg / 3.38 LBS 1532.0 g / 15.0 N
1 mm	Stal (~0.2)	1.29 kg / 2.85 LBS 1294.0 g / 12.7 N
2 mm	Stal (~0.2)	1.08 kg / 2.38 LBS 1078.0 g / 10.6 N
3 mm	Stal (~0.2)	0.89 kg / 1.96 LBS 888.0 g / 8.7 N
5 mm	Stal (~0.2)	0.59 kg / 1.29 LBS 586.0 g / 5.7 N
10 mm	Stal (~0.2)	0.20 kg / 0.44 LBS 198.0 g / 1.9 N
15 mm	Stal (~0.2)	0.07 kg / 0.15 LBS 70.0 g / 0.7 N
20 mm	Stal (~0.2)	0.03 kg / 0.06 LBS 28.0 g / 0.3 N
30 mm	Stal (~0.2)	0.01 kg / 0.01 LBS 6.0 g / 0.1 N
50 mm	Stal (~0.2)	0.00 kg / 0.00 LBS 0.0 g / 0.0 N

The following data presents the approximate shear load sufficient to initiate the slippage of the magnet downwards on a upright steel wall (assuming standard friction). This parameter varies with the separation distance between the magnet and the surface.

Table 3: Vertical assembly (sliding) - behavior on slippery surfaces
MP 25x5x5 / N38

Surface type	Friction coefficient / % Mocy	Max load (kg/lbs/g/N)
Raw steel	µ = 0.3 30% Nominalnej Siły	2.30 kg / 5.07 LBS 2298.0 g / 22.5 N
Painted steel (standard)	µ = 0.2 20% Nominalnej Siły	1.53 kg / 3.38 LBS 1532.0 g / 15.0 N
Oily/slippery steel	µ = 0.1 10% Nominalnej Siły	0.77 kg / 1.69 LBS 766.0 g / 7.5 N
Magnet with anti-slip rubber	µ = 0.5 50% Nominalnej Siły	3.83 kg / 8.44 LBS 3830.0 g / 37.6 N

When hanging a element on a upright plane (e.g., a fridge), it will maintain only approx. 1/5 of its maximum pull force. Gravity and a weak degree of grip mean that products slip easier than they pull off. Designing a wall mount? Remember that the shear force is noticeably lower than the maximum static pull force. On a slippery surface, the magnet will give way down under a much lighter weight. Using a rubber coating can effectively raise the stability.

Table 4: Material efficiency (substrate influence) - sheet metal selection
MP 25x5x5 / N38

Steel thickness (mm)	% power	Real pull force (kg/lbs/g/N)
0.5 mm	10%	0.77 kg / 1.69 LBS 766.0 g / 7.5 N
1 mm	25%	1.92 kg / 4.22 LBS 1915.0 g / 18.8 N
2 mm	50%	3.83 kg / 8.44 LBS 3830.0 g / 37.6 N
3 mm	75%	5.75 kg / 12.67 LBS 5745.0 g / 56.4 N
5 mm	100%	7.66 kg / 16.89 LBS 7660.0 g / 75.1 N
10 mm	100%	7.66 kg / 16.89 LBS 7660.0 g / 75.1 N
11 mm	100%	7.66 kg / 16.89 LBS 7660.0 g / 75.1 N
12 mm	100%	7.66 kg / 16.89 LBS 7660.0 g / 75.1 N

A thin metal plate is unable to focus the entire magnetic field, which squanders power of the holder. Should you mount a strong magnet to a weak sheet, the field will penetrate right through and the holding will be smaller. To utilize the maximum of this neodymium's power, you require a sufficiently solid backing of steel. The material oversaturation causes that on thin elements (e.g., thin profiles), the product holds weaker. We suggest choosing the steel cross-section according to the table below.

Table 5: Thermal stability (material behavior) - thermal limit
MP 25x5x5 / N38

Ambient temp. (°C)	Power loss	Remaining pull (kg/lbs/g/N)	Status
20 °C	0.0%	7.66 kg / 16.89 LBS 7660.0 g / 75.1 N	OK
40 °C	-2.2%	7.49 kg / 16.52 LBS 7491.5 g / 73.5 N	OK
60 °C	-4.4%	7.32 kg / 16.14 LBS 7323.0 g / 71.8 N	OK
80 °C	-6.6%	7.15 kg / 15.77 LBS 7154.4 g / 70.2 N
100 °C	-28.8%	5.45 kg / 12.02 LBS 5453.9 g / 53.5 N

Standard neodymium magnets irreversibly lose power after exceeding the maximum temperature. Avoid high temperatures – heat can permanently demagnetize this magnet. With increasing heat, the neodymium's capacity briefly decreases. Do not use this magnet close to ovens exceeding its safe range. Ignoring the limit will cause irreversible degradation of magnetic properties.

*Engineering note: Heat tolerance is determined by both grade, and the Permeance Coefficient Pc. Flat magnets (low Pc) risk losing magnetic properties at lower temperatures compared to rod magnets. Warning indicator in the table points to permanent field degradation for this particular item.

Table 6: Two magnets (repulsion) - forces in the system
MP 25x5x5 / N38

Gap (mm)	Attraction (kg/lbs) (N-S)	Sliding Force (kg/lbs/g/N)	Repulsion (kg/lbs) (N-N)
0 mm	82.42 kg / 181.72 LBS 6 082 Gs	12.36 kg / 27.26 LBS 12364 g / 121.3 N	N/A
1 mm	75.95 kg / 167.44 LBS 11 091 Gs	11.39 kg / 25.12 LBS 11392 g / 111.8 N	68.35 kg / 150.69 LBS ~0 Gs
2 mm	69.63 kg / 153.51 LBS 10 620 Gs	10.44 kg / 23.03 LBS 10445 g / 102.5 N	62.67 kg / 138.16 LBS ~0 Gs
3 mm	63.64 kg / 140.29 LBS 10 153 Gs	9.55 kg / 21.04 LBS 9545 g / 93.6 N	57.27 kg / 126.26 LBS ~0 Gs
5 mm	52.69 kg / 116.16 LBS 9 238 Gs	7.90 kg / 17.42 LBS 7903 g / 77.5 N	47.42 kg / 104.54 LBS ~0 Gs
10 mm	31.58 kg / 69.62 LBS 7 152 Gs	4.74 kg / 10.44 LBS 4737 g / 46.5 N	28.42 kg / 62.66 LBS ~0 Gs
20 mm	10.61 kg / 23.39 LBS 4 145 Gs	1.59 kg / 3.51 LBS 1591 g / 15.6 N	9.55 kg / 21.05 LBS ~0 Gs
50 mm	0.65 kg / 1.43 LBS 1 024 Gs	0.10 kg / 0.21 LBS 97 g / 1.0 N	0.58 kg / 1.28 LBS ~0 Gs
60 mm	0.31 kg / 0.69 LBS 712 Gs	0.05 kg / 0.10 LBS 47 g / 0.5 N	0.28 kg / 0.62 LBS ~0 Gs
70 mm	0.16 kg / 0.36 LBS 514 Gs	0.02 kg / 0.05 LBS 24 g / 0.2 N	0.15 kg / 0.32 LBS ~0 Gs
80 mm	0.09 kg / 0.20 LBS 383 Gs	0.01 kg / 0.03 LBS 14 g / 0.1 N	0.08 kg / 0.18 LBS ~0 Gs
90 mm	0.05 kg / 0.12 LBS 293 Gs	0.01 kg / 0.02 LBS 8 g / 0.1 N	0.05 kg / 0.11 LBS ~0 Gs
100 mm	0.03 kg / 0.07 LBS 230 Gs	0.00 kg / 0.01 LBS 5 g / 0.0 N	0.03 kg / 0.06 LBS ~0 Gs

Two magnets interact from a significantly greater distance than a neodymium and metal combination. The setup of magnet-to-magnet generates a stronger field and a further horizon of action. Want to build a solid fastener? Utilize two neodymiums instead of a neodymium and a steel. Exercise caution that when bringing together two magnets, the collision energy is extreme. The repulsion force is slightly lower than the attraction, but still large.
*Field value for N-N configuration drops to ~0 Gs at the midpoint between the magnets (due to field cancellation).
Note: Calculations demonstrate friction force of two identical neodymium magnets (friction ~0.15 for Ni-Ni coating).

Table 7: Protective zones (implants) - precautionary measures
MP 25x5x5 / N38

Object / Device	Limit (Gauss) / mT	Safe distance
Pacemaker	5 Gs (0.5 mT)	17.0 cm
Hearing aid	10 Gs (1.0 mT)	13.5 cm
Mechanical watch	20 Gs (2.0 mT)	10.5 cm
Mobile device	40 Gs (4.0 mT)	8.0 cm
Remote	50 Gs (5.0 mT)	7.5 cm
Payment card	400 Gs (40.0 mT)	3.0 cm
HDD hard drive	600 Gs (60.0 mT)	2.5 cm

Extremely neodym field is a real danger to IT equipment and pacemakers. These neodymiums generate a field that prevents correct functioning of sensitive medical devices. Be aware: the invisible magnetic field acts through matter and plastic. Increased vigilance must be taken by people with hearing aids and drug dispensers. Also at risk are: automatic timepieces, car keys, speakers, and displays. Do not bring the product near payment cards, hard drives, or precise measuring instruments.

Table 8: Collisions (cracking risk) - collision effects
MP 25x5x5 / N38

Start from (mm)	Speed (km/h)	Energy (J)
10 mm	22.62 km/h (6.28 m/s)	0.35 J
30 mm	36.46 km/h (10.13 m/s)	0.91 J
50 mm	46.96 km/h (13.05 m/s)	1.50 J
100 mm	66.40 km/h (18.45 m/s)	3.01 J

NdFeB products are prone to chipping – a collision with steel risks their cracking. Watch the impact speed – a magnet released freely turns into a projectile. Impact energy can trigger coating fragments or painful pinches to skin. Always hold the magnet during mounting so it doesn't hit violently against the metal. A contact at a velocity of dozens of km/h almost guarantees destruction of the neodymium. Wear eye protection when handling with large magnets.

Table 9: Coating parameters (durability)
MP 25x5x5 / 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)

For outdoor applications, an epoxy coating is required; standard nickel is intended for indoor use. Note the thickness of the protective layer.

Table 10: Construction data (P_c)
MP 25x5x5 / N38

Parameter	Value	SI Unit / Description
Magnetic Flux	24 536 Mx	245.4 µWb
P_c Coefficient	1.03	High (Stable)

Total magnetic flux emitted by the magnet pole. Essential parameter for generator designers as well as sensors. P_c value determines the working geometry.

Table 11: Physics of underwater searching
MP 25x5x5 / N38

Environment	Effective steel pull	Effect
Air (land)	7.66 kg	Standard
Water (riverbed)	8.77 kg (+1.11 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!

Water displaces steel, making heavy objects slightly lighter. Note: for permanent underwater work, we recommend magnets with an anti-corrosive (epoxy) coating.

1. Sliding resistance

*Note: On a vertical wall, the magnet holds just approx. 20-30% of its nominal pull.

2. Efficiency vs thickness

*Thin steel (e.g. 0.5mm PC case) severely limits the holding force.

3. Heat tolerance

*For N38 material, the safety limit is 80°C.

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

chart generated for the permeance coefficient P_c (Permeance Coefficient) = 1.03

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 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 and environmental data

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%

Sustainability

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: 030193-2026

Measurement Calculator

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Kilograms (kg)

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It is ideally suited for places where solid attachment of the magnet to the substrate is required without the risk of detachment. Mounting is clean and reversible, unlike gluing. 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. The flat screw head should evenly press the magnet. Remember: cracking during assembly results from material properties, not a product defect.

Moisture can penetrate micro-cracks in the coating and cause oxidation of the magnet. 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. If the magnet does not have a chamfer (cone), we recommend using a screw with a flat or cylindrical head, or possibly using a washer. Always check that the screw head is not larger than the outer diameter of the magnet (25 mm), so it doesn't protrude beyond the outline.

The presented product is a ring magnet with dimensions Ø25 mm (outer diameter) and height 5 mm. The pulling force of this model is an impressive 7.66 kg, which translates to 75.12 N in newtons. The product has a [NiCuNi] coating and is made of NdFeB material. Inner hole dimension: 5 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. When ordering a larger quantity, magnets are usually packed in stacks, where they are already naturally paired.

Strengths and weaknesses of neodymium magnets.

Advantages

Besides their high retention, neodymium magnets are valued for these benefits:

Their strength is durable, and after around 10 years it drops only by ~1% (theoretically),
Magnets effectively defend themselves against demagnetization caused by external fields,
A magnet with a smooth nickel surface has an effective appearance,
Neodymium magnets deliver maximum magnetic induction on a small surface, which ensures high operational effectiveness,
Through (adequate) combination of ingredients, they can achieve high thermal strength, enabling functioning at temperatures approaching 230°C and above...
Possibility of exact shaping as well as optimizing to specific conditions,
Universal use in modern industrial fields – they serve a role in magnetic memories, drive modules, diagnostic systems, also multitasking production systems.
Compactness – despite small sizes they offer powerful magnetic field, making them ideal for precision applications

Weaknesses

Cons of neodymium magnets: application proposals

Susceptibility to cracking is one of their disadvantages. Upon strong impact they can fracture. We recommend keeping them in a steel housing, which not only protects them against impacts but also increases their durability
Neodymium magnets decrease their force 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. For use outdoors we recommend using waterproof magnets e.g. in rubber, plastic
We recommend casing - magnetic mount, due to difficulties in creating nuts inside the magnet and complicated shapes.
Possible danger related to microscopic parts of magnets are risky, if swallowed, which is particularly important in the context of child health protection. Additionally, small components of these devices are able to disrupt the diagnostic process medical after entering the body.
With large orders the cost of neodymium magnets can be a barrier,

Holding force characteristics

Maximum holding power of the magnet – what affects it?

The specified lifting capacity refers to the limit force, recorded under laboratory conditions, namely:

with the contact of a yoke made of special test steel, ensuring maximum field concentration
whose transverse dimension reaches at least 10 mm
characterized by smoothness
with direct contact (no paint)
for force applied at a right angle (pull-off, not shear)
at temperature approx. 20 degrees Celsius

Magnet lifting force in use – key factors

It is worth knowing that the magnet holding may be lower influenced by elements below, in order of importance:

Air gap (between the magnet and the metal), because even a tiny clearance (e.g. 0.5 mm) can cause a decrease in force by up to 50% (this also applies to varnish, corrosion or debris).
Load vector – maximum parameter is obtained only during perpendicular pulling. The force required to slide of the magnet along the surface is typically many times smaller (approx. 1/5 of the lifting capacity).
Element thickness – to utilize 100% power, the steel must be sufficiently thick. Thin sheet limits the lifting capacity (the magnet "punches through" it).
Chemical composition of the base – low-carbon steel attracts best. Higher carbon content lower magnetic properties and lifting capacity.
Surface structure – the more even the surface, the larger the contact zone and stronger the hold. Roughness creates an air distance.
Temperature – temperature increase results in weakening of force. It is worth remembering the maximum operating temperature for a given model.

Lifting capacity testing was performed on plates with a smooth surface of suitable thickness, under perpendicular forces, in contrast under parallel forces the holding force is lower. Moreover, even a slight gap between the magnet’s surface and the plate lowers the holding force.

H&S for magnets

Precision electronics

Navigation devices and smartphones are highly sensitive to magnetic fields. Direct contact with a strong magnet can ruin the sensors in your phone.

Medical implants

Patients with a ICD must keep an absolute distance from magnets. The magnetism can disrupt the operation of the implant.

Powerful field

Before use, check safety instructions. Uncontrolled attraction can destroy the magnet or hurt your hand. Think ahead.

Skin irritation risks

Certain individuals have a contact allergy to Ni, which is the typical protective layer for neodymium magnets. Frequent touching can result in dermatitis. It is best to use safety gloves.

Keep away from children

Strictly keep magnets out of reach of children. Choking hazard is high, and the consequences of magnets connecting inside the body are fatal.

Finger safety

Pinching hazard: The attraction force is so immense that it can result in hematomas, crushing, and even bone fractures. Use thick gloves.

Power loss in heat

Regular neodymium magnets (grade N) undergo demagnetization when the temperature surpasses 80°C. Damage is permanent.

Fire warning

Drilling and cutting of neodymium magnets carries a risk of fire hazard. Neodymium dust reacts violently with oxygen and is hard to extinguish.

Risk of cracking

Despite the nickel coating, neodymium is delicate and cannot withstand shocks. Do not hit, as the magnet may crumble into hazardous fragments.

Protect data

Device Safety: Neodymium magnets can damage payment cards and sensitive devices (heart implants, medical aids, timepieces).

Important! Learn more about hazards in the article: Safety of working with magnets.

MP 25x5x5 / N38 - ring magnet

Technical details - MP 25x5x5 / N38 - ring magnet

Magnetic properties of material N38

Physical properties of sintered neodymium magnets Nd2Fe14B at 20°C

Physical analysis of the assembly - data

Table 1: Static force (force vs gap) - interaction chart MP 25x5x5 / N38

Table 2: Shear capacity (wall) MP 25x5x5 / N38

Table 3: Vertical assembly (sliding) - behavior on slippery surfaces MP 25x5x5 / N38

Table 4: Material efficiency (substrate influence) - sheet metal selection MP 25x5x5 / N38

Table 5: Thermal stability (material behavior) - thermal limit MP 25x5x5 / N38

Table 6: Two magnets (repulsion) - forces in the system MP 25x5x5 / N38

Table 7: Protective zones (implants) - precautionary measures MP 25x5x5 / N38

Table 8: Collisions (cracking risk) - collision effects MP 25x5x5 / N38

Table 9: Coating parameters (durability) MP 25x5x5 / N38

Table 10: Construction data (Pc) MP 25x5x5 / N38

Table 11: Physics of underwater searching MP 25x5x5 / N38

1. Sliding resistance

2. Efficiency vs thickness

3. Heat tolerance

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

Elemental analysis

Sustainability

Pulling force

Magnetic Field

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Strengths and weaknesses of neodymium magnets.

Advantages

Weaknesses

Holding force characteristics

Maximum holding power of the magnet – what affects it?

Magnet lifting force in use – key factors

H&S for magnets

Precision electronics

Medical implants

Powerful field

Skin irritation risks

Keep away from children

Finger safety

Power loss in heat

Fire warning

Risk of cracking

Protect data

Physical properties of sintered neodymium magnets Nd₂Fe₁₄B at 20°C

Table 1: Static force (force vs gap) - interaction chart
MP 25x5x5 / N38

Table 2: Shear capacity (wall)
MP 25x5x5 / N38

Table 3: Vertical assembly (sliding) - behavior on slippery surfaces
MP 25x5x5 / N38

Table 4: Material efficiency (substrate influence) - sheet metal selection
MP 25x5x5 / N38

Table 5: Thermal stability (material behavior) - thermal limit
MP 25x5x5 / N38

Table 6: Two magnets (repulsion) - forces in the system
MP 25x5x5 / N38

Table 7: Protective zones (implants) - precautionary measures
MP 25x5x5 / N38

Table 8: Collisions (cracking risk) - collision effects
MP 25x5x5 / N38

Table 9: Coating parameters (durability)
MP 25x5x5 / N38

Table 10: Construction data (P_c)
MP 25x5x5 / N38

Table 11: Physics of underwater searching
MP 25x5x5 / N38