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MP 20x5x5 / N38 - ring magnet

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

ring magnet

Catalog no 030186

GTIN/EAN: 5906301812036

5.00

Diameter

20 mm [±0,1 mm]

internal diameter Ø

5 mm [±0,1 mm]

Height

5 mm [±0,1 mm]

Weight

11.04 g

Magnetization Direction

↑ axial

Load capacity

6.49 kg / 63.68 N

Magnetic Induction

277.16 mT / 2772 Gs

Coating

[NiCuNi] Nickel

check parameters »

2.76 ZŁ with VAT / pcs + price for transport

2.24 ZŁ net + 23% VAT / pcs

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Technical of the product - MP 20x5x5 / N38 - ring magnet

Specification / characteristics - MP 20x5x5 / N38 - ring magnet

properties

properties	values
Cat. no.	030186
GTIN/EAN	5906301812036
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	20 mm [±0,1 mm]
internal diameter Ø	5 mm [±0,1 mm]
Height	5 mm [±0,1 mm]
Weight	11.04 g
Magnetization Direction	↑ axial
Load capacity ~ ?	6.49 kg / 63.68 N
Magnetic Induction ~ ?	277.16 mT / 2772 Gs
Coating	[NiCuNi] Nickel
Manufacturing Tolerance	±0.1 mm

Magnetic properties of material N38

Specification / characteristics MP 20x5x5 / 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 simulation of the product - technical parameters

Presented information represent the direct effect of a physical calculation. Results rely on models for the material Nd₂Fe₁₄B. Actual parameters may deviate from the simulation results. Please consider these data as a preliminary roadmap during assembly planning.

Table 1: Static force (pull vs distance) - power drop
MP 20x5x5 / N38

Distance (mm)	Induction (Gauss) / mT	Pull Force (kg/lbs/g/N)	Risk Status
0 mm	5917 Gs 591.7 mT	6.49 kg / 14.31 lbs 6490.0 g / 63.7 N	medium risk
1 mm	5321 Gs 532.1 mT	5.25 kg / 11.57 lbs 5249.3 g / 51.5 N	medium risk
2 mm	4736 Gs 473.6 mT	4.16 kg / 9.17 lbs 4158.8 g / 40.8 N	medium risk
3 mm	4184 Gs 418.4 mT	3.25 kg / 7.15 lbs 3245.0 g / 31.8 N	medium risk
5 mm	3216 Gs 321.6 mT	1.92 kg / 4.23 lbs 1917.2 g / 18.8 N	weak grip
10 mm	1650 Gs 165.0 mT	0.50 kg / 1.11 lbs 504.5 g / 4.9 N	weak grip
15 mm	907 Gs 90.7 mT	0.15 kg / 0.34 lbs 152.6 g / 1.5 N	weak grip
20 mm	544 Gs 54.4 mT	0.05 kg / 0.12 lbs 54.9 g / 0.5 N	weak grip
30 mm	240 Gs 24.0 mT	0.01 kg / 0.02 lbs 10.7 g / 0.1 N	weak grip
50 mm	75 Gs 7.5 mT	0.00 kg / 0.00 lbs 1.0 g / 0.0 N	weak grip

Pulling power decreases significantly with every mm of gap. Remember that even a microscopic distance (e.g., contamination, varnish, rust) significantly reduces the pull force. Magnetic products operate optimally at the point of direct contact; distance nullifies the force. Notice how rapidly the load capacity fall, when the product does not touch directly to the metal substrate. When designing the arrangement, discard redundant distances.

Table 2: Shear hold (vertical surface)
MP 20x5x5 / N38

Distance (mm)	Friction coefficient	Pull Force (kg/lbs/g/N)
0 mm	Stal (~0.2)	1.30 kg / 2.86 lbs 1298.0 g / 12.7 N
1 mm	Stal (~0.2)	1.05 kg / 2.31 lbs 1050.0 g / 10.3 N
2 mm	Stal (~0.2)	0.83 kg / 1.83 lbs 832.0 g / 8.2 N
3 mm	Stal (~0.2)	0.65 kg / 1.43 lbs 650.0 g / 6.4 N
5 mm	Stal (~0.2)	0.38 kg / 0.85 lbs 384.0 g / 3.8 N
10 mm	Stal (~0.2)	0.10 kg / 0.22 lbs 100.0 g / 1.0 N
15 mm	Stal (~0.2)	0.03 kg / 0.07 lbs 30.0 g / 0.3 N
20 mm	Stal (~0.2)	0.01 kg / 0.02 lbs 10.0 g / 0.1 N
30 mm	Stal (~0.2)	0.00 kg / 0.00 lbs 2.0 g / 0.0 N
50 mm	Stal (~0.2)	0.00 kg / 0.00 lbs 0.0 g / 0.0 N

The table below shows the estimated force sufficient to initiate the downward movement of the magnet vertically on a vertical metal surface (considering typical friction coefficient). This value is a function of the separation distance between the magnet and the surface.

Table 3: Vertical assembly (shearing) - behavior on slippery surfaces
MP 20x5x5 / N38

Surface type	Friction coefficient / % Mocy	Max load (kg/lbs/g/N)
Raw steel	µ = 0.3 30% Nominalnej Siły	1.95 kg / 4.29 lbs 1947.0 g / 19.1 N
Painted steel (standard)	µ = 0.2 20% Nominalnej Siły	1.30 kg / 2.86 lbs 1298.0 g / 12.7 N
Oily/slippery steel	µ = 0.1 10% Nominalnej Siły	0.65 kg / 1.43 lbs 649.0 g / 6.4 N
Magnet with anti-slip rubber	µ = 0.5 50% Nominalnej Siły	3.25 kg / 7.15 lbs 3245.0 g / 31.8 N

When hanging a holder on a upright surface (e.g., a car body), it will maintain just about 1/5 of nominal attraction strength. Gravity as well as a weak degree of grip influence the fact that products slide down faster than they pull off. Planning a vertical fastening? Note that the sliding force is significantly lower than the maximum static pull force. On a slippery surface, the magnet will give way down under a noticeably lighter load. Utilizing a rubberized pad can effectively improve the result.

Table 4: Steel thickness (saturation) - sheet metal selection
MP 20x5x5 / N38

Steel thickness (mm)	% power	Real pull force (kg/lbs/g/N)
0.5 mm	10%	0.65 kg / 1.43 lbs 649.0 g / 6.4 N
1 mm	25%	1.62 kg / 3.58 lbs 1622.5 g / 15.9 N
2 mm	50%	3.25 kg / 7.15 lbs 3245.0 g / 31.8 N
3 mm	75%	4.87 kg / 10.73 lbs 4867.5 g / 47.8 N
5 mm	100%	6.49 kg / 14.31 lbs 6490.0 g / 63.7 N
10 mm	100%	6.49 kg / 14.31 lbs 6490.0 g / 63.7 N
11 mm	100%	6.49 kg / 14.31 lbs 6490.0 g / 63.7 N
12 mm	100%	6.49 kg / 14.31 lbs 6490.0 g / 63.7 N

A too thin steel is unable to conduct the entire magnetic field, which weakens actual performance of the magnet. Should you attach a powerful product to a too thin substrate, the field will pass right through and the attraction force will be weaker. To squeeze the maximum of this magnet's potential, you require a sufficiently solid backing of steel. The saturation effect means that on delicate walls (e.g., car bodies), the magnet shows lower pull force. We recommend selecting the steel cross-section according to the table below.

Table 5: Thermal stability (stability) - power drop
MP 20x5x5 / N38

Ambient temp. (°C)	Power loss	Remaining pull (kg/lbs/g/N)	Status
20 °C	0.0%	6.49 kg / 14.31 lbs 6490.0 g / 63.7 N	OK
40 °C	-2.2%	6.35 kg / 13.99 lbs 6347.2 g / 62.3 N	OK
60 °C	-4.4%	6.20 kg / 13.68 lbs 6204.4 g / 60.9 N	OK
80 °C	-6.6%	6.06 kg / 13.36 lbs 6061.7 g / 59.5 N
100 °C	-28.8%	4.62 kg / 10.19 lbs 4620.9 g / 45.3 N

Standard neodymium magnets change their properties strength above the temperature limit. Watch out for overheating – heat can irreversibly demagnetize this magnet. As the temperature rises, the magnet's capacity briefly drops. Avoid using this product close to heaters higher than its working range. Ignoring the limit will lead to destruction of magnetism.

*Technical advisory: Temperature resistance is determined by both grade, and the Permeance Coefficient Pc. Low-profile magnets (pancake types) are more susceptible to demagnetization under lower heat stress compared to rod magnets. The danger warning in the table signals a risk of irreversible loss for this specific geometry.

Table 6: Two magnets (repulsion) - forces in the system
MP 20x5x5 / N38

Gap (mm)	Attraction (kg/lbs) (N-S)	Shear Strength (kg/lbs/g/N)	Repulsion (kg/lbs) (N-N)
0 mm	54.03 kg / 119.11 lbs 6 121 Gs	8.10 kg / 17.87 lbs 8104 g / 79.5 N	N/A
1 mm	48.76 kg / 107.50 lbs 11 242 Gs	7.31 kg / 16.13 lbs 7314 g / 71.8 N	43.89 kg / 96.75 lbs ~0 Gs
2 mm	43.70 kg / 96.34 lbs 10 642 Gs	6.55 kg / 14.45 lbs 6555 g / 64.3 N	39.33 kg / 86.71 lbs ~0 Gs
3 mm	38.98 kg / 85.94 lbs 10 051 Gs	5.85 kg / 12.89 lbs 5847 g / 57.4 N	35.08 kg / 77.34 lbs ~0 Gs
5 mm	30.63 kg / 67.54 lbs 8 910 Gs	4.60 kg / 10.13 lbs 4595 g / 45.1 N	27.57 kg / 60.78 lbs ~0 Gs
10 mm	15.96 kg / 35.19 lbs 6 432 Gs	2.39 kg / 5.28 lbs 2394 g / 23.5 N	14.36 kg / 31.67 lbs ~0 Gs
20 mm	4.20 kg / 9.26 lbs 3 299 Gs	0.63 kg / 1.39 lbs 630 g / 6.2 N	3.78 kg / 8.33 lbs ~0 Gs
50 mm	0.19 kg / 0.42 lbs 702 Gs	0.03 kg / 0.06 lbs 29 g / 0.3 N	0.17 kg / 0.38 lbs ~0 Gs
60 mm	0.09 kg / 0.20 lbs 480 Gs	0.01 kg / 0.03 lbs 13 g / 0.1 N	0.08 kg / 0.18 lbs ~0 Gs
70 mm	0.05 kg / 0.10 lbs 342 Gs	0.01 kg / 0.01 lbs 7 g / 0.1 N	0.04 kg / 0.09 lbs ~0 Gs
80 mm	0.02 kg / 0.05 lbs 253 Gs	0.00 kg / 0.01 lbs 4 g / 0.0 N	0.02 kg / 0.05 lbs ~0 Gs
90 mm	0.01 kg / 0.03 lbs 193 Gs	0.00 kg / 0.00 lbs 2 g / 0.0 N	0.01 kg / 0.03 lbs ~0 Gs
100 mm	0.01 kg / 0.02 lbs 150 Gs	0.00 kg / 0.00 lbs 1 g / 0.0 N	0.00 kg / 0.00 lbs ~0 Gs

Two magnets attract each other from a wider radius than a neodymium and metal combination. The setup of two magnets generates a stronger field and a wider radius of performance. Planning to create a powerful holder? Utilize two neodymiums instead of a neodymium and a steel. Exercise caution that when bringing together two magnets, the impact force is extreme. The repulsion force is slightly lower than the attraction, but still impressive.
*Flux density between like poles is approximately ~0 Gs at the midpoint between the magnets (resulting from vector opposition).
* Estimates demonstrate shear force of a pair of matching magnets (friction ~0.15 for Ni-Ni layer).

Table 7: Hazards (electronics) - precautionary measures
MP 20x5x5 / N38

Object / Device	Limit (Gauss) / mT	Safe distance
Pacemaker	5 Gs (0.5 mT)	14.5 cm
Hearing aid	10 Gs (1.0 mT)	11.5 cm
Timepiece	20 Gs (2.0 mT)	9.0 cm
Mobile device	40 Gs (4.0 mT)	6.5 cm
Car key	50 Gs (5.0 mT)	6.0 cm
Payment card	400 Gs (40.0 mT)	2.5 cm
HDD hard drive	600 Gs (60.0 mT)	2.0 cm

A strong magnetic field is a serious hazard to electronic devices and pacemakers. These NdFeB products produce a flux that destroys function of sensitive medical devices. Be aware: the invisible magnetic field acts through matter and housings. Special caution must be exercised by people with cochlear implants and drug dispensers. Also at risk are: mechanical watches, remotes, speakers, and displays. Avoid contact with magnetic cards, HDD media, or sensitive navigation tools.

Table 8: Collisions (cracking risk) - warning
MP 20x5x5 / N38

Start from (mm)	Speed (km/h)	Energy (J)
10 mm	25.61 km/h (7.11 m/s)	0.28 J
30 mm	42.40 km/h (11.78 m/s)	0.77 J
50 mm	54.68 km/h (15.19 m/s)	1.27 J
100 mm	77.33 km/h (21.48 m/s)	2.55 J

Neodymium magnets are prone to chipping – a strong collision with metal risks their cracking. Pay attention to connection velocity – a neodymium left loose speeds with massive force. Impact energy can trigger coating fragments or painful pinches to skin. Hold the magnet firmly during installation so it doesn't slam with momentum against the steel surface. A contact at a velocity of dozens of km/h means shattering of the magnet. Use safety goggles when handling with powerful specimens.

Table 9: Coating parameters (durability)
MP 20x5x5 / 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 (Flux)
MP 20x5x5 / N38

Parameter	Value	SI Unit / Description
Magnetic Flux	16 116 Mx	161.2 µWb
P_c Coefficient	1.13	High (Stable)

Flux value emitted by the magnet pole. Key data for generator designers and motors. The P_c coefficient defines the working geometry.

Table 11: Physics of underwater searching
MP 20x5x5 / N38

Environment	Effective steel pull	Effect
Air (land)	6.49 kg	Standard
Water (riverbed)	7.43 kg (+0.94 kg buoyancy gain)	+14.5%

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

In water, the magnet feels stronger thanks to Archimedes' principle. Note: for permanent underwater work, we recommend magnets with an anti-corrosive (epoxy) coating.

1. Sliding resistance

*Caution: On a vertical surface, the magnet retains just ~20% of its perpendicular strength.

2. Steel thickness impact

*Thin steel (e.g. 0.5mm PC case) significantly weakens the holding force.

3. Thermal stability

*For standard magnets, the safety limit is 80°C.

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

chart generated for the permeance coefficient P_c (Permeance Coefficient) = 1.13

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 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%

Environmental data

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: 030186-2026

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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 is a crucial issue when working with model MP 20x5x5 / N38. Neodymium magnets are sintered ceramics, which means they are hard but breakable and inelastic. When tightening the screw, you must maintain great sensitivity. We recommend tightening manually with a screwdriver, not an impact driver, because excessive force will cause the ring to crack. 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. In the place of the mounting hole, the coating is thinner and can be damaged when tightening the screw, which will become a corrosion focus. If you must use it outside, paint it with anti-corrosion paint after mounting.

A screw or bolt with a thread diameter smaller than 5 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 (20 mm), so it doesn't protrude beyond the outline.

This model is characterized by dimensions Ø20x5 mm and a weight of 11.04 g. The pulling force of this model is an impressive 6.49 kg, which translates to 63.68 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. 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.

Pros as well as cons of Nd₂Fe₁₄B magnets.

Benefits

Besides their immense magnetic power, neodymium magnets offer the following advantages:

Their power is durable, and after around ten years it drops only by ~1% (according to research),
They are resistant to demagnetization induced by presence of other magnetic fields,
Thanks to the reflective finish, the coating of nickel, gold-plated, or silver-plated gives an elegant appearance,
Neodymium magnets deliver maximum magnetic induction on a their surface, which increases force concentration,
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 freedom in forming and the capacity to modify to specific needs,
Wide application in high-tech industry – they are commonly used in data components, electromotive mechanisms, medical devices, as well as modern systems.
Relatively small size with high pulling force – neodymium magnets offer impressive pulling force in compact dimensions, which allows their use in miniature devices

Weaknesses

What to avoid - cons of neodymium magnets: application proposals

Susceptibility to cracking is one of their disadvantages. Upon intense impact they can break. We recommend keeping them in a strong case, which not only protects them against impacts but also raises 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 power. Therefore, we recommend our special magnets marked [AH], which maintain stability even at temperatures up to 230°C
When exposed to humidity, magnets start to rust. For applications outside, it is recommended to use protective magnets, such as magnets in rubber or plastics, which prevent oxidation as well as corrosion.
We recommend casing - magnetic mount, due to difficulties in producing threads inside the magnet and complicated forms.
Health risk to health – tiny shards of magnets pose a threat, when accidentally swallowed, which gains importance in the context of child safety. Additionally, tiny parts of these magnets are able to complicate diagnosis medical when they are in the body.
High unit price – neodymium magnets cost more than other types of magnets (e.g. ferrite), which can limit application in large quantities

Holding force characteristics

Breakaway strength of the magnet in ideal conditions – what affects it?

The force parameter is a theoretical maximum value executed under standard conditions:

on a plate made of structural steel, effectively closing the magnetic field
with a thickness no less than 10 mm
with an ground contact surface
under conditions of no distance (surface-to-surface)
for force acting at a right angle (in the magnet axis)
in neutral thermal conditions

Practical lifting capacity: influencing factors

Real force is affected by specific conditions, including (from priority):

Air gap (between the magnet and the metal), since even a microscopic clearance (e.g. 0.5 mm) results in a decrease in force by up to 50% (this also applies to varnish, rust or debris).
Force direction – catalog parameter refers to detachment vertically. When slipping, the magnet holds much less (often approx. 20-30% of maximum force).
Steel thickness – insufficiently thick plate does not close the flux, causing part of the power to be lost into the air.
Material type – ideal substrate is high-permeability steel. Stainless steels may attract less.
Smoothness – full contact is obtained only on polished steel. Rough texture reduce the real contact area, weakening the magnet.
Operating temperature – NdFeB sinters have a sensitivity to temperature. When it is hot they lose power, and in frost gain strength (up to a certain limit).

Lifting capacity was measured with the use of a polished steel plate of optimal thickness (min. 20 mm), under vertically applied force, whereas under attempts to slide the magnet the holding force is lower. Additionally, even a slight gap between the magnet’s surface and the plate lowers the load capacity.

H&S for magnets

Compass and GPS

A powerful magnetic field interferes with the functioning of compasses in smartphones and GPS navigation. Keep magnets close to a smartphone to avoid damaging the sensors.

Magnetic media

Device Safety: Neodymium magnets can ruin payment cards and delicate electronics (pacemakers, medical aids, timepieces).

Fire risk

Combustion risk: Rare earth powder is explosive. Avoid machining magnets without safety gear as this risks ignition.

Warning for heart patients

People with a pacemaker have to keep an safe separation from magnets. The magnetic field can disrupt the operation of the implant.

No play value

Strictly store magnets away from children. Risk of swallowing is significant, and the consequences of magnets connecting inside the body are life-threatening.

Crushing force

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

Nickel allergy

Medical facts indicate that the nickel plating (the usual finish) is a potent allergen. If you have an allergy, refrain from direct skin contact or opt for versions in plastic housing.

Heat sensitivity

Do not overheat. Neodymium magnets are sensitive to heat. If you require operation above 80°C, ask us about special high-temperature series (H, SH, UH).

Safe operation

Before use, check safety instructions. Sudden snapping can break the magnet or hurt your hand. Be predictive.

Magnets are brittle

Neodymium magnets are sintered ceramics, which means they are prone to chipping. Collision of two magnets will cause them cracking into small pieces.

Important! Details about risks in the article: Safety of working with magnets.

MP 20x5x5 / N38 - ring magnet

Technical of the product - MP 20x5x5 / N38 - ring magnet

Magnetic properties of material N38

Physical properties of sintered neodymium magnets Nd2Fe14B at 20°C

Physical simulation of the product - technical parameters

Table 1: Static force (pull vs distance) - power drop MP 20x5x5 / N38

Table 2: Shear hold (vertical surface) MP 20x5x5 / N38

Table 3: Vertical assembly (shearing) - behavior on slippery surfaces MP 20x5x5 / N38

Table 4: Steel thickness (saturation) - sheet metal selection MP 20x5x5 / N38

Table 5: Thermal stability (stability) - power drop MP 20x5x5 / N38

Table 6: Two magnets (repulsion) - forces in the system MP 20x5x5 / N38

Table 7: Hazards (electronics) - precautionary measures MP 20x5x5 / N38

Table 8: Collisions (cracking risk) - warning MP 20x5x5 / N38

Table 9: Coating parameters (durability) MP 20x5x5 / N38

Table 10: Construction data (Flux) MP 20x5x5 / N38

Table 11: Physics of underwater searching MP 20x5x5 / N38

1. Sliding resistance

2. Steel thickness impact

3. Thermal stability

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

Elemental analysis

Environmental data

Force (pull)

Field Strength

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Pros as well as cons of Nd2Fe14B magnets.

Benefits

Weaknesses

Holding force characteristics

Breakaway strength of the magnet in ideal conditions – what affects it?

Practical lifting capacity: influencing factors

H&S for magnets

Compass and GPS

Magnetic media

Fire risk

Warning for heart patients

No play value

Crushing force

Nickel allergy

Heat sensitivity

Safe operation

Magnets are brittle

Physical properties of sintered neodymium magnets Nd₂Fe₁₄B at 20°C

Table 1: Static force (pull vs distance) - power drop
MP 20x5x5 / N38

Table 2: Shear hold (vertical surface)
MP 20x5x5 / N38

Table 3: Vertical assembly (shearing) - behavior on slippery surfaces
MP 20x5x5 / N38

Table 4: Steel thickness (saturation) - sheet metal selection
MP 20x5x5 / N38

Table 5: Thermal stability (stability) - power drop
MP 20x5x5 / N38

Table 6: Two magnets (repulsion) - forces in the system
MP 20x5x5 / N38

Table 7: Hazards (electronics) - precautionary measures
MP 20x5x5 / N38

Table 8: Collisions (cracking risk) - warning
MP 20x5x5 / N38

Table 9: Coating parameters (durability)
MP 20x5x5 / N38

Table 10: Construction data (Flux)
MP 20x5x5 / N38

Table 11: Physics of underwater searching
MP 20x5x5 / N38

Pros as well as cons of Nd₂Fe₁₄B magnets.