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MP 10x4.3x4 / 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 030178

GTIN/EAN: 5906301811954

5.00

Diameter

10 mm [±0,1 mm]

internal diameter Ø

4.3 mm [±0,1 mm]

Height

4 mm [±0,1 mm]

Weight

1.92 g

Magnetization Direction

↑ axial

Load capacity

2.28 kg / 22.35 N

Magnetic Induction

386.91 mT / 3869 Gs

Coating

[NiCuNi] Nickel

product parameters »

1.045 ZŁ with VAT / pcs + price for transport

0.850 ZŁ net + 23% VAT / pcs

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Technical data of the product - MP 10x4.3x4 / N38 - ring magnet

Specification / characteristics - MP 10x4.3x4 / N38 - ring magnet

properties

properties	values
Cat. no.	030178
GTIN/EAN	5906301811954
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	10 mm [±0,1 mm]
internal diameter Ø	4.3 mm [±0,1 mm]
Height	4 mm [±0,1 mm]
Weight	1.92 g
Magnetization Direction	↑ axial
Load capacity ~ ?	2.28 kg / 22.35 N
Magnetic Induction ~ ?	386.91 mT / 3869 Gs
Coating	[NiCuNi] Nickel
Manufacturing Tolerance	±0.1 mm

Magnetic properties of material N38

Specification / characteristics MP 10x4.3x4 / 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

Technical simulation of the assembly - technical parameters

The following data represent the outcome of a mathematical simulation. Results were calculated on algorithms for the material Nd₂Fe₁₄B. Actual parameters may differ. Please consider these data as a supplementary guide during assembly planning.

Table 1: Static force (pull vs gap) - characteristics
MP 10x4.3x4 / N38

Distance (mm)	Induction (Gauss) / mT	Pull Force (kg/lbs/g/N)	Risk Status
0 mm	6115 Gs 611.5 mT	2.28 kg / 5.03 lbs 2280.0 g / 22.4 N	warning
1 mm	4915 Gs 491.5 mT	1.47 kg / 3.25 lbs 1473.3 g / 14.5 N	safe
2 mm	3833 Gs 383.3 mT	0.90 kg / 1.97 lbs 895.7 g / 8.8 N	safe
3 mm	2949 Gs 294.9 mT	0.53 kg / 1.17 lbs 530.3 g / 5.2 N	safe
5 mm	1761 Gs 176.1 mT	0.19 kg / 0.42 lbs 189.1 g / 1.9 N	safe
10 mm	612 Gs 61.2 mT	0.02 kg / 0.05 lbs 22.8 g / 0.2 N	safe
15 mm	284 Gs 28.4 mT	0.00 kg / 0.01 lbs 4.9 g / 0.0 N	safe
20 mm	157 Gs 15.7 mT	0.00 kg / 0.00 lbs 1.5 g / 0.0 N	safe
30 mm	64 Gs 6.4 mT	0.00 kg / 0.00 lbs 0.3 g / 0.0 N	safe
50 mm	19 Gs 1.9 mT	0.00 kg / 0.00 lbs 0.0 g / 0.0 N	safe

Pulling power decreases drastically with every subsequent millimeter of spacing. Remember that even a very thin break (e.g., dirt, varnish, rust) strongly reduces the pull force. Magnets work optimally at the point of direct contact; distance nullifies the power. Analyze how quickly the load capacity drop, when the magnet does not adhere directly to the steel surface. When planning the mounting, eliminate redundant distances.

Table 2: Vertical hold (vertical surface)
MP 10x4.3x4 / N38

Distance (mm)	Friction coefficient	Pull Force (kg/lbs/g/N)
0 mm	Stal (~0.2)	0.46 kg / 1.01 lbs 456.0 g / 4.5 N
1 mm	Stal (~0.2)	0.29 kg / 0.65 lbs 294.0 g / 2.9 N
2 mm	Stal (~0.2)	0.18 kg / 0.40 lbs 180.0 g / 1.8 N
3 mm	Stal (~0.2)	0.11 kg / 0.23 lbs 106.0 g / 1.0 N
5 mm	Stal (~0.2)	0.04 kg / 0.08 lbs 38.0 g / 0.4 N
10 mm	Stal (~0.2)	0.00 kg / 0.01 lbs 4.0 g / 0.0 N
15 mm	Stal (~0.2)	0.00 kg / 0.00 lbs 0.0 g / 0.0 N
20 mm	Stal (~0.2)	0.00 kg / 0.00 lbs 0.0 g / 0.0 N
30 mm	Stal (~0.2)	0.00 kg / 0.00 lbs 0.0 g / 0.0 N
50 mm	Stal (~0.2)	0.00 kg / 0.00 lbs 0.0 g / 0.0 N

The following data presents the theoretical weight limit sufficient to initiate the slippage of the magnet vertically on a upright metal surface (considering typical friction). This value is relative to the distance between the magnet and the surface.

Table 3: Wall mounting (sliding) - behavior on slippery surfaces
MP 10x4.3x4 / N38

Surface type	Friction coefficient / % Mocy	Max load (kg/lbs/g/N)
Raw steel	µ = 0.3 30% Nominalnej Siły	0.68 kg / 1.51 lbs 684.0 g / 6.7 N
Painted steel (standard)	µ = 0.2 20% Nominalnej Siły	0.46 kg / 1.01 lbs 456.0 g / 4.5 N
Oily/slippery steel	µ = 0.1 10% Nominalnej Siły	0.23 kg / 0.50 lbs 228.0 g / 2.2 N
Magnet with anti-slip rubber	µ = 0.5 50% Nominalnej Siły	1.14 kg / 2.51 lbs 1140.0 g / 11.2 N

When hanging a holder on a vertical surface (e.g., a board), it will only hold just approx. 20%-30% of its maximum pull force. Gravity as well as a weak degree of grip influence the fact that products slide down faster than they pop off the substrate. Planning a hanger? Remember that the sliding force is noticeably lower than the perpendicular breakaway force. On a slippery surface, the element will slip down under a significantly smaller weight. Using a rubber pad can effectively increase the grip.

Table 4: Steel thickness (substrate influence) - sheet metal selection
MP 10x4.3x4 / N38

Steel thickness (mm)	% power	Real pull force (kg/lbs/g/N)
0.5 mm	10%	0.23 kg / 0.50 lbs 228.0 g / 2.2 N
1 mm	25%	0.57 kg / 1.26 lbs 570.0 g / 5.6 N
2 mm	50%	1.14 kg / 2.51 lbs 1140.0 g / 11.2 N
3 mm	75%	1.71 kg / 3.77 lbs 1710.0 g / 16.8 N
5 mm	100%	2.28 kg / 5.03 lbs 2280.0 g / 22.4 N
10 mm	100%	2.28 kg / 5.03 lbs 2280.0 g / 22.4 N
11 mm	100%	2.28 kg / 5.03 lbs 2280.0 g / 22.4 N
12 mm	100%	2.28 kg / 5.03 lbs 2280.0 g / 22.4 N

A thin sheet is incapable of focus the entire magnetic field, which wastes potential of the magnet. Should you mount a strong magnet to a thin surface, the flux will penetrate right through and the pull force will drop sharply. To achieve 100% of this neodymium's power, you require a sufficiently solid piece of metal. The saturation effect causes that on delicate walls (e.g., thin profiles), the product works worse. We recommend selecting the steel thickness according to the table below.

Table 5: Working in heat (stability) - resistance threshold
MP 10x4.3x4 / N38

Ambient temp. (°C)	Power loss	Remaining pull (kg/lbs/g/N)	Status
20 °C	0.0%	2.28 kg / 5.03 lbs 2280.0 g / 22.4 N	OK
40 °C	-2.2%	2.23 kg / 4.92 lbs 2229.8 g / 21.9 N	OK
60 °C	-4.4%	2.18 kg / 4.81 lbs 2179.7 g / 21.4 N	OK
80 °C	-6.6%	2.13 kg / 4.69 lbs 2129.5 g / 20.9 N
100 °C	-28.8%	1.62 kg / 3.58 lbs 1623.4 g / 15.9 N

Classic neodymiums lose strength past the thermal threshold. Avoid high temperatures – high temperature can permanently damage this product. With every degree above norm, the magnet's capacity temporarily lowers. Refrain from using this magnet in hot environments exceeding its working range. Ignoring the limit will cause permanent loss of magnetic properties.

*Engineering note: Thermal stability depends not only on the material grade, as well as the dimension ratios. Thin magnets (low Pc) may lose charge permanently under lower heat stress compared to rod magnets. Red status in the table points to permanent field degradation for this particular item.

Table 6: Magnet-Magnet interaction (attraction) - forces in the system
MP 10x4.3x4 / N38

Gap (mm)	Attraction (kg/lbs) (N-S)	Shear Strength (kg/lbs/g/N)	Repulsion (kg/lbs) (N-N)
0 mm	12.93 kg / 28.50 lbs 6 169 Gs	1.94 kg / 4.27 lbs 1939 g / 19.0 N	N/A
1 mm	10.50 kg / 23.16 lbs 11 025 Gs	1.58 kg / 3.47 lbs 1576 g / 15.5 N	9.45 kg / 20.84 lbs ~0 Gs
2 mm	8.35 kg / 18.41 lbs 9 831 Gs	1.25 kg / 2.76 lbs 1253 g / 12.3 N	7.52 kg / 16.57 lbs ~0 Gs
3 mm	6.55 kg / 14.43 lbs 8 703 Gs	0.98 kg / 2.17 lbs 982 g / 9.6 N	5.89 kg / 12.99 lbs ~0 Gs
5 mm	3.91 kg / 8.63 lbs 6 729 Gs	0.59 kg / 1.29 lbs 587 g / 5.8 N	3.52 kg / 7.76 lbs ~0 Gs
10 mm	1.07 kg / 2.36 lbs 3 522 Gs	0.16 kg / 0.35 lbs 161 g / 1.6 N	0.96 kg / 2.13 lbs ~0 Gs
20 mm	0.13 kg / 0.29 lbs 1 223 Gs	0.02 kg / 0.04 lbs 19 g / 0.2 N	0.12 kg / 0.26 lbs ~0 Gs
50 mm	0.00 kg / 0.01 lbs 194 Gs	0.00 kg / 0.00 lbs 0 g / 0.0 N	0.00 kg / 0.00 lbs ~0 Gs
60 mm	0.00 kg / 0.00 lbs 129 Gs	0.00 kg / 0.00 lbs 0 g / 0.0 N	0.00 kg / 0.00 lbs ~0 Gs
70 mm	0.00 kg / 0.00 lbs 91 Gs	0.00 kg / 0.00 lbs 0 g / 0.0 N	0.00 kg / 0.00 lbs ~0 Gs
80 mm	0.00 kg / 0.00 lbs 66 Gs	0.00 kg / 0.00 lbs 0 g / 0.0 N	0.00 kg / 0.00 lbs ~0 Gs
90 mm	0.00 kg / 0.00 lbs 50 Gs	0.00 kg / 0.00 lbs 0 g / 0.0 N	0.00 kg / 0.00 lbs ~0 Gs
100 mm	0.00 kg / 0.00 lbs 39 Gs	0.00 kg / 0.00 lbs 0 g / 0.0 N	0.00 kg / 0.00 lbs ~0 Gs

Two strong neodymiums attract each other from a much further distance than a neodymium and metal combination. The connection of magnet-to-magnet produces a massive flux and a wider radius of performance. Designing a powerful holder? Utilize two neodymiums instead of one magnet and a steel. Exercise caution that when bringing together two magnets, the pinch force is massive. The repulsion force is slightly lower than the attraction, but still large.
*The magnetic induction between like poles reaches ~0 Gs at the midpoint of the gap (due to field cancellation).
Note: Figures demonstrate sliding force of dual matching magnets (friction ~0.15 for Ni-Ni layer).

Table 7: Hazards (electronics) - precautionary measures
MP 10x4.3x4 / N38

Object / Device	Limit (Gauss) / mT	Safe distance
Pacemaker	5 Gs (0.5 mT)	9.0 cm
Hearing aid	10 Gs (1.0 mT)	7.0 cm
Mechanical watch	20 Gs (2.0 mT)	5.0 cm
Mobile device	40 Gs (4.0 mT)	4.0 cm
Car key	50 Gs (5.0 mT)	3.5 cm
Payment card	400 Gs (40.0 mT)	1.5 cm
HDD hard drive	600 Gs (60.0 mT)	1.5 cm

A strong magnetic field is a real danger to electronics and medical implants. These NdFeB products generate a field that disrupts operation of sensitive medical devices. Notice: the unseen radiation acts through matter and glass. Increased vigilance must be taken by people with hearing aids and insulin pumps. The risk also applies to: mechanical watches, car keys, membranes, and screens. Do not place the magnet near cards, hard drives, or precise measuring instruments.

Table 8: Collisions (kinetic energy) - warning
MP 10x4.3x4 / N38

Start from (mm)	Speed (km/h)	Energy (J)
10 mm	34.97 km/h (9.71 m/s)	0.09 J
30 mm	60.20 km/h (16.72 m/s)	0.27 J
50 mm	77.71 km/h (21.59 m/s)	0.45 J
100 mm	109.90 km/h (30.53 m/s)	0.89 J

Magnetic elements are prone to chipping – a strong collision with metal risks their cracking. Watch the impact speed – a magnet released freely becomes dangerous. Striking energy can trigger coating fragments or dangerous crushing to skin. Be sure to control the product during mounting so it doesn't slam with momentum against the steel surface. A collision at high speed almost guarantees destruction of the neodymium. Wear safety glasses when working with large magnets.

Table 9: Coating parameters (durability)
MP 10x4.3x4 / 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. Improper coating selection is the most common cause of magnet failure over time.

Table 10: Construction data (P_c)
MP 10x4.3x4 / N38

Parameter	Value	SI Unit / Description
Magnetic Flux	4 017 Mx	40.2 µWb
P_c Coefficient	1.44	High (Stable)

Flux value emitted by the magnet pole. Key data when building generators and motors. The P_c coefficient defines the working geometry.

Table 11: Underwater work (magnet fishing)
MP 10x4.3x4 / N38

Environment	Effective steel pull	Effect
Air (land)	2.28 kg	Standard
Water (riverbed)	2.61 kg (+0.33 kg buoyancy gain)	+14.5%

Rust risk: 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

*Warning: On a vertical surface, the magnet holds just approx. 20-30% of its perpendicular strength.

2. Plate thickness effect

*Thin steel (e.g. computer case) drastically reduces the holding force.

3. Power loss vs temp

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

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

chart generated for the permeance coefficient P_c (Permeance Coefficient) = 1.44

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%

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: 030178-2026

Measurement Calculator

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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. Thanks to the hole (often for a screw), this model enables easy screwing to wood, wall, plastic, or metal. This product with a force of 2.28 kg works great as a door latch, speaker holder, or mounting element in devices.

This is a crucial issue when working with model MP 10x4.3x4 / N38. Neodymium magnets are sintered ceramics, which means they are very brittle and inelastic. When tightening the screw, you must maintain caution. We recommend tightening manually with a screwdriver, not an impact driver, because excessive force will cause the ring to crack. 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.

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. This product is dedicated for inside building use. For outdoor applications, we recommend choosing rubberized holders or additional protection with varnish.

A screw or bolt with a thread diameter smaller than 4.3 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 (10 mm), so it doesn't protrude beyond the outline.

This model is characterized by dimensions Ø10x4 mm and a weight of 1.92 g. The pulling force of this model is an impressive 2.28 kg, which translates to 22.35 N in newtons. The mounting hole diameter is precisely 4.3 mm.

The poles are located on the planes with holes, not on the sides of the ring. 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). We do not offer paired sets with marked poles in this category, but they are easy to match manually.

Strengths as well as weaknesses of neodymium magnets.

Advantages

Apart from their notable magnetic energy, neodymium magnets have these key benefits:

Their strength is maintained, and after approximately 10 years it decreases only by ~1% (according to research),
They show high resistance to demagnetization induced by external field influence,
A magnet with a smooth gold surface looks better,
They are known for high magnetic induction at the operating surface, making them more effective,
Thanks to resistance to high temperature, they are capable of working (depending on the shape) even at temperatures up to 230°C and higher...
Thanks to the possibility of accurate shaping and customization to unique projects, magnetic components can be produced in a broad palette of shapes and sizes, which amplifies use scope,
Key role in innovative solutions – they are utilized in data components, electromotive mechanisms, diagnostic systems, as well as industrial machines.
Relatively small size with high pulling force – neodymium magnets offer strong magnetic field in tiny dimensions, which enables their usage in miniature devices

Cons

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

Susceptibility to cracking is one of their disadvantages. Upon strong impact they can break. We recommend keeping them in a strong case, which not only protects them against impacts but also raises their durability
When exposed to high temperature, neodymium magnets suffer a drop in strength. Often, when the temperature exceeds 80°C, their strength decreases (depending on the size and shape of the magnet). For those who need magnets for extreme conditions, we offer [AH] versions withstanding up to 230°C
Magnets exposed to a humid environment can corrode. Therefore during using outdoors, we suggest using waterproof magnets made of rubber, plastic or other material protecting against moisture
We suggest casing - magnetic mechanism, due to difficulties in creating threads inside the magnet and complex forms.
Potential hazard to health – tiny shards of magnets are risky, if swallowed, which gains importance in the context of child safety. It is also worth noting that small elements of these products can complicate diagnosis medical when they are in the body.
Higher cost of purchase is a significant factor to consider compared to ceramic magnets, especially in budget applications

Pull force analysis

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

Breakaway force was determined for optimal configuration, assuming:

on a plate made of mild steel, optimally conducting the magnetic field
possessing a thickness of minimum 10 mm to avoid saturation
with an ideally smooth touching surface
under conditions of ideal adhesion (metal-to-metal)
during detachment in a direction vertical to the plane
in neutral thermal conditions

Lifting capacity in practice – influencing factors

Effective lifting capacity impacted by specific conditions, including (from priority):

Distance – existence of any layer (rust, tape, air) interrupts the magnetic circuit, which reduces power rapidly (even by 50% at 0.5 mm).
Loading method – declared lifting capacity refers to detachment vertically. When applying parallel force, the magnet holds much less (often approx. 20-30% of maximum force).
Element thickness – for full efficiency, the steel must be sufficiently thick. Thin sheet restricts the lifting capacity (the magnet "punches through" it).
Material composition – not every steel attracts identically. High carbon content worsen the attraction effect.
Base smoothness – the more even the surface, the better the adhesion and higher the lifting capacity. Unevenness acts like micro-gaps.
Operating temperature – NdFeB sinters have a negative temperature coefficient. At higher temperatures they are weaker, and at low temperatures they can be stronger (up to a certain limit).

Lifting capacity testing was performed on a smooth plate of suitable thickness, under perpendicular forces, in contrast under parallel forces the lifting capacity is smaller. Moreover, even a minimal clearance between the magnet and the plate reduces the holding force.

Precautions when working with neodymium magnets

Do not give to children

Adult use only. Small elements can be swallowed, causing severe trauma. Keep out of reach of kids and pets.

Heat sensitivity

Watch the temperature. Exposing the magnet to high heat will destroy its magnetic structure and pulling force.

Flammability

Fire warning: Rare earth powder is highly flammable. Do not process magnets without safety gear as this may cause fire.

Safe distance

Powerful magnetic fields can erase data on payment cards, HDDs, and other magnetic media. Maintain a gap of min. 10 cm.

Metal Allergy

A percentage of the population experience a sensitization to Ni, which is the common plating for NdFeB magnets. Frequent touching might lead to skin redness. We strongly advise use protective gloves.

Magnets are brittle

Protect your eyes. Magnets can fracture upon uncontrolled impact, ejecting shards into the air. Wear goggles.

Compass and GPS

A strong magnetic field disrupts the operation of compasses in phones and GPS navigation. Maintain magnets close to a device to prevent breaking the sensors.

Powerful field

Use magnets with awareness. Their immense force can shock even professionals. Be vigilant and respect their force.

Bone fractures

Mind your fingers. Two powerful magnets will snap together immediately with a force of several hundred kilograms, crushing everything in their path. Be careful!

Implant safety

For implant holders: Powerful magnets affect medical devices. Keep minimum 30 cm distance or request help to work with the magnets.

Attention! Want to know more? Read our article: Why are neodymium magnets dangerous?

MP 10x4.3x4 / N38 - ring magnet

Technical data of the product - MP 10x4.3x4 / N38 - ring magnet

Magnetic properties of material N38

Physical properties of sintered neodymium magnets Nd2Fe14B at 20°C

Technical simulation of the assembly - technical parameters

Table 1: Static force (pull vs gap) - characteristics MP 10x4.3x4 / N38

Table 2: Vertical hold (vertical surface) MP 10x4.3x4 / N38

Table 3: Wall mounting (sliding) - behavior on slippery surfaces MP 10x4.3x4 / N38

Table 4: Steel thickness (substrate influence) - sheet metal selection MP 10x4.3x4 / N38

Table 5: Working in heat (stability) - resistance threshold MP 10x4.3x4 / N38

Table 6: Magnet-Magnet interaction (attraction) - forces in the system MP 10x4.3x4 / N38

Table 7: Hazards (electronics) - precautionary measures MP 10x4.3x4 / N38

Table 8: Collisions (kinetic energy) - warning MP 10x4.3x4 / N38

Table 9: Coating parameters (durability) MP 10x4.3x4 / N38

Table 10: Construction data (Pc) MP 10x4.3x4 / N38

Table 11: Underwater work (magnet fishing) MP 10x4.3x4 / N38

1. Sliding resistance

2. Plate thickness effect

3. Power loss vs temp

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

Chemical composition

Sustainability

Pulling force

Magnetic Induction

Other proposals

MW 10x30 / N38 - cylindrical magnet

SM 32x200 [2xM8] / N42 - magnetic separator

MW 5x15 / N38 - cylindrical magnet

SM 18x275 [2xM5] / N42 - magnetic separator

Strengths as well as weaknesses of neodymium magnets.

Advantages

Cons

Pull force analysis

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

Lifting capacity in practice – influencing factors

Precautions when working with neodymium magnets

Do not give to children

Heat sensitivity

Flammability

Safe distance

Metal Allergy

Magnets are brittle

Compass and GPS

Powerful field

Bone fractures

Implant safety

Physical properties of sintered neodymium magnets Nd₂Fe₁₄B at 20°C

Table 1: Static force (pull vs gap) - characteristics
MP 10x4.3x4 / N38

Table 2: Vertical hold (vertical surface)
MP 10x4.3x4 / N38

Table 3: Wall mounting (sliding) - behavior on slippery surfaces
MP 10x4.3x4 / N38

Table 4: Steel thickness (substrate influence) - sheet metal selection
MP 10x4.3x4 / N38

Table 5: Working in heat (stability) - resistance threshold
MP 10x4.3x4 / N38

Table 6: Magnet-Magnet interaction (attraction) - forces in the system
MP 10x4.3x4 / N38

Table 7: Hazards (electronics) - precautionary measures
MP 10x4.3x4 / N38

Table 8: Collisions (kinetic energy) - warning
MP 10x4.3x4 / N38

Table 9: Coating parameters (durability)
MP 10x4.3x4 / N38

Table 10: Construction data (P_c)
MP 10x4.3x4 / N38

Table 11: Underwater work (magnet fishing)
MP 10x4.3x4 / N38