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MP 30x6x10 / 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 030197

GTIN/EAN: 5906301812142

5.00

Diameter

30 mm [±0,1 mm]

internal diameter Ø

6 mm [±0,1 mm]

Height

10 mm [±0,1 mm]

Weight

50.89 g

Magnetization Direction

↑ axial

Load capacity

20.71 kg / 203.16 N

Magnetic Induction

343.81 mT / 3438 Gs

Coating

[NiCuNi] Nickel

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Technical of the product - MP 30x6x10 / N38 - ring magnet

Specification / characteristics - MP 30x6x10 / N38 - ring magnet

properties

properties	values
Cat. no.	030197
GTIN/EAN	5906301812142
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	30 mm [±0,1 mm]
internal diameter Ø	6 mm [±0,1 mm]
Height	10 mm [±0,1 mm]
Weight	50.89 g
Magnetization Direction	↑ axial
Load capacity ~ ?	20.71 kg / 203.16 N
Magnetic Induction ~ ?	343.81 mT / 3438 Gs
Coating	[NiCuNi] Nickel
Manufacturing Tolerance	±0.1 mm

Magnetic properties of material N38

Specification / characteristics MP 30x6x10 / 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 modeling of the magnet - data

Presented data represent the outcome of a physical analysis. Values rely on models for the material Nd₂Fe₁₄B. Operational performance may differ. Use these data as a preliminary roadmap when designing systems.

Table 1: Static pull force (pull vs gap) - characteristics
MP 30x6x10 / N38

Distance (mm)	Induction (Gauss) / mT	Pull Force (kg/lbs/g/N)	Risk Status
0 mm	5619 Gs 561.9 mT	20.71 kg / 45.66 LBS 20710.0 g / 203.2 N	dangerous!
1 mm	5241 Gs 524.1 mT	18.01 kg / 39.71 LBS 18011.7 g / 176.7 N	dangerous!
2 mm	4861 Gs 486.1 mT	15.50 kg / 34.17 LBS 15498.1 g / 152.0 N	dangerous!
3 mm	4490 Gs 449.0 mT	13.22 kg / 29.15 LBS 13223.5 g / 129.7 N	dangerous!
5 mm	3792 Gs 379.2 mT	9.43 kg / 20.79 LBS 9429.0 g / 92.5 N	strong
10 mm	2404 Gs 240.4 mT	3.79 kg / 8.36 LBS 3791.3 g / 37.2 N	strong
15 mm	1526 Gs 152.6 mT	1.53 kg / 3.37 LBS 1527.0 g / 15.0 N	weak grip
20 mm	1000 Gs 100.0 mT	0.66 kg / 1.45 LBS 655.5 g / 6.4 N	weak grip
30 mm	482 Gs 48.2 mT	0.15 kg / 0.34 LBS 152.6 g / 1.5 N	weak grip
50 mm	161 Gs 16.1 mT	0.02 kg / 0.04 LBS 17.0 g / 0.2 N	weak grip

Pulling power weakens sharply with every mm of spacing. Note that even the smallest gap (e.g., contamination, paint, veneer) strongly diminishes the holding power. Neodymiums operate most effectively in perfect adhesion; gap drastically cuts the power. Notice how flashily the pull force fall, when the product does not adhere flatly to the steel surface. When planning the mounting, avoid additional spacers.

Table 2: Vertical hold (wall)
MP 30x6x10 / N38

Distance (mm)	Friction coefficient	Pull Force (kg/lbs/g/N)
0 mm	Stal (~0.2)	4.14 kg / 9.13 LBS 4142.0 g / 40.6 N
1 mm	Stal (~0.2)	3.60 kg / 7.94 LBS 3602.0 g / 35.3 N
2 mm	Stal (~0.2)	3.10 kg / 6.83 LBS 3100.0 g / 30.4 N
3 mm	Stal (~0.2)	2.64 kg / 5.83 LBS 2644.0 g / 25.9 N
5 mm	Stal (~0.2)	1.89 kg / 4.16 LBS 1886.0 g / 18.5 N
10 mm	Stal (~0.2)	0.76 kg / 1.67 LBS 758.0 g / 7.4 N
15 mm	Stal (~0.2)	0.31 kg / 0.67 LBS 306.0 g / 3.0 N
20 mm	Stal (~0.2)	0.13 kg / 0.29 LBS 132.0 g / 1.3 N
30 mm	Stal (~0.2)	0.03 kg / 0.07 LBS 30.0 g / 0.3 N
50 mm	Stal (~0.2)	0.00 kg / 0.01 LBS 4.0 g / 0.0 N

The following data indicates the estimated weight limit needed to cause the shifting of the magnet vertically on a vertical steel wall (considering standard friction coefficient). The holding force depends on the air gap between the magnet and the metal.

Table 3: Vertical assembly (shearing) - vertical pull
MP 30x6x10 / N38

Surface type	Friction coefficient / % Mocy	Max load (kg/lbs/g/N)
Raw steel	µ = 0.3 30% Nominalnej Siły	6.21 kg / 13.70 LBS 6213.0 g / 60.9 N
Painted steel (standard)	µ = 0.2 20% Nominalnej Siły	4.14 kg / 9.13 LBS 4142.0 g / 40.6 N
Oily/slippery steel	µ = 0.1 10% Nominalnej Siły	2.07 kg / 4.57 LBS 2071.0 g / 20.3 N
Magnet with anti-slip rubber	µ = 0.5 50% Nominalnej Siły	10.36 kg / 22.83 LBS 10355.0 g / 101.6 N

When mounting a holder on a upright surface (e.g., a board), it will only hold only approx. 1/5 of nominal attraction strength. Gravity as well as a weak degree of grip mean that holders slip easier than they pop off the substrate. Designing a vertical fastening? Note that the shear force is significantly lower than the perpendicular breakaway force. On a painted metal, the holder will slide down under a significantly smaller cargo. Application of an anti-slip layer can significantly improve the result.

Table 4: Material efficiency (saturation) - power losses
MP 30x6x10 / N38

Steel thickness (mm)	% power	Real pull force (kg/lbs/g/N)
0.5 mm	5%	1.04 kg / 2.28 LBS 1035.5 g / 10.2 N
1 mm	13%	2.59 kg / 5.71 LBS 2588.8 g / 25.4 N
2 mm	25%	5.18 kg / 11.41 LBS 5177.5 g / 50.8 N
3 mm	38%	7.77 kg / 17.12 LBS 7766.3 g / 76.2 N
5 mm	63%	12.94 kg / 28.54 LBS 12943.8 g / 127.0 N
10 mm	100%	20.71 kg / 45.66 LBS 20710.0 g / 203.2 N
11 mm	100%	20.71 kg / 45.66 LBS 20710.0 g / 203.2 N
12 mm	100%	20.71 kg / 45.66 LBS 20710.0 g / 203.2 N

A thin sheet is unable to conduct the entire magnetic field, which wastes potential of the magnet. Should you attach a powerful product to a thin surface, the field will pass right through and the pull force will drop sharply. To achieve the maximum of this magnet's potential, you need a suitably thick backing of steel. The saturation effect means that on delicate walls (e.g., thin profiles), the holder shows lower pull force. We suggest choosing the steel thickness based on the following data.

Table 5: Thermal resistance (material behavior) - resistance threshold
MP 30x6x10 / N38

Ambient temp. (°C)	Power loss	Remaining pull (kg/lbs/g/N)	Status
20 °C	0.0%	20.71 kg / 45.66 LBS 20710.0 g / 203.2 N	OK
40 °C	-2.2%	20.25 kg / 44.65 LBS 20254.4 g / 198.7 N	OK
60 °C	-4.4%	19.80 kg / 43.65 LBS 19798.8 g / 194.2 N	OK
80 °C	-6.6%	19.34 kg / 42.64 LBS 19343.1 g / 189.8 N
100 °C	-28.8%	14.75 kg / 32.51 LBS 14745.5 g / 144.7 N

Ordinary NdFeB products irreversibly lose parameters after exceeding the maximum temperature. Protect against heat – heat can irreversibly damage this product. As the temperature rises, the magnet's power briefly lowers. Avoid using this magnet close to heaters exceeding its safe range. Exceeding the critical threshold will cause destruction of magnetism.

*Technical advisory: Thermal stability depends not only on the material grade, as well as the dimension ratios. Thin magnets (low permeance coefficient) may lose charge permanently sooner than taller cylinders. The danger warning in the table signals permanent field degradation for this specific geometry.

Table 6: Two magnets (repulsion) - field collision
MP 30x6x10 / N38

Gap (mm)	Attraction (kg/lbs) (N-S)	Lateral Force (kg/lbs/g/N)	Repulsion (kg/lbs) (N-N)
0 mm	103.97 kg / 229.22 LBS 6 035 Gs	15.60 kg / 34.38 LBS 15596 g / 153.0 N	N/A
1 mm	97.15 kg / 214.17 LBS 10 864 Gs	14.57 kg / 32.13 LBS 14572 g / 143.0 N	87.43 kg / 192.75 LBS ~0 Gs
2 mm	90.42 kg / 199.35 LBS 10 481 Gs	13.56 kg / 29.90 LBS 13564 g / 133.1 N	81.38 kg / 179.42 LBS ~0 Gs
3 mm	83.97 kg / 185.13 LBS 10 100 Gs	12.60 kg / 27.77 LBS 12596 g / 123.6 N	75.57 kg / 166.61 LBS ~0 Gs
5 mm	71.94 kg / 158.60 LBS 9 349 Gs	10.79 kg / 23.79 LBS 10791 g / 105.9 N	64.75 kg / 142.74 LBS ~0 Gs
10 mm	47.34 kg / 104.36 LBS 7 583 Gs	7.10 kg / 15.65 LBS 7100 g / 69.7 N	42.60 kg / 93.92 LBS ~0 Gs
20 mm	19.03 kg / 41.96 LBS 4 809 Gs	2.86 kg / 6.29 LBS 2855 g / 28.0 N	17.13 kg / 37.77 LBS ~0 Gs
50 mm	1.53 kg / 3.37 LBS 1 363 Gs	0.23 kg / 0.51 LBS 229 g / 2.2 N	1.38 kg / 3.03 LBS ~0 Gs
60 mm	0.77 kg / 1.69 LBS 965 Gs	0.11 kg / 0.25 LBS 115 g / 1.1 N	0.69 kg / 1.52 LBS ~0 Gs
70 mm	0.41 kg / 0.90 LBS 706 Gs	0.06 kg / 0.14 LBS 61 g / 0.6 N	0.37 kg / 0.81 LBS ~0 Gs
80 mm	0.23 kg / 0.51 LBS 531 Gs	0.03 kg / 0.08 LBS 35 g / 0.3 N	0.21 kg / 0.46 LBS ~0 Gs
90 mm	0.14 kg / 0.30 LBS 409 Gs	0.02 kg / 0.05 LBS 21 g / 0.2 N	0.12 kg / 0.27 LBS ~0 Gs
100 mm	0.09 kg / 0.19 LBS 322 Gs	0.01 kg / 0.03 LBS 13 g / 0.1 N	0.08 kg / 0.17 LBS ~0 Gs

Two magnetic products interact from a wider radius than a magnet and steel combination. The connection of magnet-to-magnet generates a stronger field and a further horizon of performance. Want to build a strong closure? Apply two magnets instead of one magnet and a striker plate. Be careful that when attracting two neodymiums, the pinch force is huge. The levitation is slightly lower than the connection force, but still impressive.
*Flux density in repulsion mode drops to ~0 Gs at the geometric center of the gap (caused by magnetic field nullification).
Important: Estimates apply to friction force of a pair of identical neodymium magnets (friction coefficient ~0.15 for Ni-Ni coating).

Table 7: Protective zones (electronics) - warnings
MP 30x6x10 / N38

Object / Device	Limit (Gauss) / mT	Safe distance
Pacemaker	5 Gs (0.5 mT)	19.5 cm
Hearing aid	10 Gs (1.0 mT)	15.0 cm
Mechanical watch	20 Gs (2.0 mT)	12.0 cm
Phone / Smartphone	40 Gs (4.0 mT)	9.0 cm
Remote	50 Gs (5.0 mT)	8.5 cm
Payment card	400 Gs (40.0 mT)	3.5 cm
HDD hard drive	600 Gs (60.0 mT)	3.0 cm

Powerful magnet radiation is a real danger to IT equipment and pacemakers. These NdFeB products produce a field that prevents correct functioning of sensitive medical devices. Remember: the unseen radiation passes through tissues and housings. Special caution must be exercised by people with hearing aids and drug dispensers. Influence will be felt by: mechanical watches, remotes, speakers, and displays. Do not bring the product near payment cards, hard drives, or sensitive navigation tools.

Table 8: Dynamics (kinetic energy) - warning
MP 30x6x10 / N38

Start from (mm)	Speed (km/h)	Energy (J)
10 mm	22.55 km/h (6.26 m/s)	1.00 J
30 mm	35.40 km/h (9.83 m/s)	2.46 J
50 mm	45.52 km/h (12.64 m/s)	4.07 J
100 mm	64.34 km/h (17.87 m/s)	8.13 J

Magnetic elements are delicate – a violent impact against metal causes immediate chipping. Pay attention to connection velocity – a magnet released freely speeds with massive force. Impact energy can cause material chips or dangerous crushing to skin. Be sure to control the product during bringing near metal so it doesn't hit violently against the steel surface. A contact at a velocity of dozens of km/h ends with a crack of the neodymium. Wear eye protection when handling with powerful specimens.

Table 9: Surface protection spec
MP 30x6x10 / 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 following table defines the conditions under which this product can be safely used. The silver nickel coating also serves an aesthetic function but is not fully waterproof.

Table 10: Construction data (P_c)
MP 30x6x10 / N38

Parameter	Value	SI Unit / Description
Magnetic Flux	31 585 Mx	315.8 µWb
P_c Coefficient	0.96	High (Stable)

Total magnetic flux passing through the magnet pole. Essential parameter when building generators as well as sensors. P_c value determines the magnet's operating point.

Table 11: Physics of underwater searching
MP 30x6x10 / N38

Environment	Effective steel pull	Effect
Air (land)	20.71 kg	Standard
Water (riverbed)	23.71 kg (+3.00 kg buoyancy gain)	+14.5%

Corrosion warning: Remember to wipe the magnet thoroughly after removing it from water and apply a protective layer (e.g., oil) to avoid corrosion.

Water displaces steel, making heavy objects slightly lighter. Buoyancy helps in lifting finds.

1. Sliding resistance

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

2. Efficiency vs thickness

*Thin steel (e.g. 0.5mm PC case) drastically reduces the holding force.

3. Heat tolerance

*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) = 0.96

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.

Engineering data and GPSR

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: 030197-2026

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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 30x6x10 / 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 easily scratched 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 6 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 (30 mm), so it doesn't protrude beyond the outline.

It is a magnetic ring with a diameter of 30 mm and thickness 10 mm. The key parameter here is the holding force amounting to approximately 20.71 kg (force ~203.16 N). The mounting hole diameter is precisely 6 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.

Strengths

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

They virtually do not lose power, because even after 10 years the decline in efficiency is only ~1% (according to literature),
Magnets very well resist against loss of magnetization caused by external fields,
By applying a smooth layer of nickel, the element gains an professional look,
They are known for high magnetic induction at the operating surface, which increases their power,
Through (adequate) combination of ingredients, they can achieve high thermal strength, allowing for action at temperatures approaching 230°C and above...
Considering the possibility of free forming and customization to unique solutions, magnetic components can be created in a wide range of shapes and sizes, which makes them more universal,
Universal use in innovative solutions – they are used in hard drives, motor assemblies, advanced medical instruments, also multitasking production systems.
Relatively small size with high pulling force – neodymium magnets offer strong magnetic field in tiny dimensions, which allows their use in miniature devices

Disadvantages

Disadvantages of neodymium magnets:

At very strong impacts they can break, therefore we advise placing them in special holders. A metal housing provides additional protection against damage, as well as increases the magnet's durability.
Neodymium magnets decrease their strength under the influence of heating. As soon as 80°C is exceeded, many of them start losing their force. Therefore, we recommend our special magnets marked [AH], which maintain stability even at temperatures 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 resistant to moisture
We suggest a housing - magnetic mount, due to difficulties in creating threads inside the magnet and complex forms.
Potential hazard to health – tiny shards of magnets pose a threat, in case of ingestion, which becomes key in the aspect of protecting the youngest. It is also worth noting that small elements of these devices can be problematic in diagnostics medical when they are in the body.
Due to expensive raw materials, their price is higher than average,

Pull force analysis

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

The load parameter shown refers to the peak performance, obtained under optimal environment, namely:

on a base made of structural steel, optimally conducting the magnetic flux
whose thickness reaches at least 10 mm
with an ground contact surface
without any clearance between the magnet and steel
for force acting at a right angle (pull-off, not shear)
in neutral thermal conditions

Impact of factors on magnetic holding capacity in practice

Bear in mind that the magnet holding may be lower subject to elements below, in order of importance:

Clearance – existence of any layer (paint, dirt, air) interrupts the magnetic circuit, which reduces capacity steeply (even by 50% at 0.5 mm).
Force direction – catalog parameter refers to detachment vertically. When slipping, the magnet exhibits significantly lower power (often approx. 20-30% of nominal force).
Base massiveness – too thin sheet does not close the flux, causing part of the flux to be lost into the air.
Material composition – not every steel reacts the same. Alloy additives worsen the interaction with the magnet.
Surface structure – the smoother and more polished the surface, the better the adhesion and stronger the hold. Unevenness creates an air distance.
Operating temperature – neodymium magnets have a negative temperature coefficient. At higher temperatures they lose power, and in frost gain strength (up to a certain limit).

Lifting capacity testing was conducted on a smooth plate of optimal thickness, under a perpendicular pulling force, however under attempts to slide the magnet the lifting capacity is smaller. In addition, even a small distance between the magnet and the plate lowers the load capacity.

Safety rules for work with NdFeB magnets

Machining danger

Fire hazard: Neodymium dust is highly flammable. Avoid machining magnets in home conditions as this risks ignition.

Allergy Warning

Certain individuals suffer from a contact allergy to nickel, which is the typical protective layer for neodymium magnets. Frequent touching might lead to a rash. We strongly advise use safety gloves.

Power loss in heat

Regular neodymium magnets (grade N) lose power when the temperature exceeds 80°C. This process is irreversible.

Beware of splinters

Neodymium magnets are ceramic materials, meaning they are very brittle. Impact of two magnets will cause them cracking into small pieces.

Magnetic interference

Remember: rare earth magnets generate a field that confuses precision electronics. Keep a safe distance from your mobile, device, and GPS.

Danger to the youngest

NdFeB magnets are not intended for children. Swallowing several magnets can lead to them connecting inside the digestive tract, which constitutes a direct threat to life and requires immediate surgery.

Pacemakers

Health Alert: Neodymium magnets can deactivate heart devices and defibrillators. Do not approach if you have medical devices.

Electronic devices

Powerful magnetic fields can destroy records on credit cards, HDDs, and other magnetic media. Maintain a gap of min. 10 cm.

Powerful field

Handle magnets with awareness. Their immense force can surprise even experienced users. Plan your moves and do not underestimate their power.

Physical harm

Big blocks can break fingers in a fraction of a second. Do not put your hand betwixt two strong magnets.

Attention! Learn more about risks in the article: Magnet Safety Guide.

MP 30x6x10 / N38 - ring magnet

Technical of the product - MP 30x6x10 / N38 - ring magnet

Magnetic properties of material N38

Physical properties of sintered neodymium magnets Nd2Fe14B at 20°C

Physical modeling of the magnet - data

Table 1: Static pull force (pull vs gap) - characteristics MP 30x6x10 / N38

Table 2: Vertical hold (wall) MP 30x6x10 / N38

Table 3: Vertical assembly (shearing) - vertical pull MP 30x6x10 / N38

Table 4: Material efficiency (saturation) - power losses MP 30x6x10 / N38

Table 5: Thermal resistance (material behavior) - resistance threshold MP 30x6x10 / N38

Table 6: Two magnets (repulsion) - field collision MP 30x6x10 / N38

Table 7: Protective zones (electronics) - warnings MP 30x6x10 / N38

Table 8: Dynamics (kinetic energy) - warning MP 30x6x10 / N38

Table 9: Surface protection spec MP 30x6x10 / N38

Table 10: Construction data (Pc) MP 30x6x10 / N38

Table 11: Physics of underwater searching MP 30x6x10 / 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)

Magnet pull force

Magnetic Induction

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Strengths and weaknesses of neodymium magnets.

Strengths

Disadvantages

Pull force analysis

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

Impact of factors on magnetic holding capacity in practice

Safety rules for work with NdFeB magnets

Machining danger

Allergy Warning

Power loss in heat

Beware of splinters

Magnetic interference

Danger to the youngest

Pacemakers

Electronic devices

Powerful field

Physical harm

Physical properties of sintered neodymium magnets Nd₂Fe₁₄B at 20°C

Table 1: Static pull force (pull vs gap) - characteristics
MP 30x6x10 / N38

Table 2: Vertical hold (wall)
MP 30x6x10 / N38

Table 3: Vertical assembly (shearing) - vertical pull
MP 30x6x10 / N38

Table 4: Material efficiency (saturation) - power losses
MP 30x6x10 / N38

Table 5: Thermal resistance (material behavior) - resistance threshold
MP 30x6x10 / N38

Table 6: Two magnets (repulsion) - field collision
MP 30x6x10 / N38

Table 7: Protective zones (electronics) - warnings
MP 30x6x10 / N38

Table 8: Dynamics (kinetic energy) - warning
MP 30x6x10 / N38

Table 9: Surface protection spec
MP 30x6x10 / N38

Table 10: Construction data (P_c)
MP 30x6x10 / N38

Table 11: Physics of underwater searching
MP 30x6x10 / N38