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MP 40x20x5 / 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 030199

GTIN/EAN: 5906301812166

5.00

Diameter

40 mm [±0,1 mm]

internal diameter Ø

20 mm [±0,1 mm]

Height

5 mm [±0,1 mm]

Weight

35.34 g

Magnetization Direction

↑ axial

Load capacity

7.24 kg / 70.98 N

Magnetic Induction

150.36 mT / 1504 Gs

Coating

[NiCuNi] Nickel

see properties »

12.24 ZŁ with VAT / pcs + price for transport

9.95 ZŁ net + 23% VAT / pcs

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Technical details - MP 40x20x5 / N38 - ring magnet

Specification / characteristics - MP 40x20x5 / N38 - ring magnet

properties

properties	values
Cat. no.	030199
GTIN/EAN	5906301812166
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	40 mm [±0,1 mm]
internal diameter Ø	20 mm [±0,1 mm]
Height	5 mm [±0,1 mm]
Weight	35.34 g
Magnetization Direction	↑ axial
Load capacity ~ ?	7.24 kg / 70.98 N
Magnetic Induction ~ ?	150.36 mT / 1504 Gs
Coating	[NiCuNi] Nickel
Manufacturing Tolerance	±0.1 mm

Magnetic properties of material N38

Specification / characteristics MP 40x20x5 / 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 product - report

The following data constitute the outcome of a physical calculation. Values are based on algorithms for the class Nd₂Fe₁₄B. Operational parameters might slightly differ. Use these data as a reference point during assembly planning.

Table 1: Static pull force (pull vs distance) - characteristics
MP 40x20x5 / N38

Distance (mm)	Induction (Gauss) / mT	Pull Force (kg/lbs/g/N)	Risk Status
0 mm	5269 Gs 526.9 mT	7.24 kg / 15.96 LBS 7240.0 g / 71.0 N	warning
1 mm	5005 Gs 500.5 mT	6.53 kg / 14.41 LBS 6534.7 g / 64.1 N	warning
2 mm	4739 Gs 473.9 mT	5.86 kg / 12.91 LBS 5857.7 g / 57.5 N	warning
3 mm	4475 Gs 447.5 mT	5.22 kg / 11.51 LBS 5222.2 g / 51.2 N	warning
5 mm	3960 Gs 396.0 mT	4.09 kg / 9.02 LBS 4090.8 g / 40.1 N	warning
10 mm	2832 Gs 283.2 mT	2.09 kg / 4.61 LBS 2092.3 g / 20.5 N	warning
15 mm	1990 Gs 199.0 mT	1.03 kg / 2.28 LBS 1033.4 g / 10.1 N	low risk
20 mm	1407 Gs 140.7 mT	0.52 kg / 1.14 LBS 516.3 g / 5.1 N	low risk
30 mm	745 Gs 74.5 mT	0.14 kg / 0.32 LBS 144.6 g / 1.4 N	low risk
50 mm	268 Gs 26.8 mT	0.02 kg / 0.04 LBS 18.7 g / 0.2 N	low risk

Magnetic force drops drastically per each millimeter of gap. Keep in mind that even a microscopic distance (e.g., contamination, varnish, dust) significantly weakens the grip. Magnets hold most effectively during direct contact; gap kills the force. See how rapidly the load capacity drop, when the product does not touch tightly to the steel surface. When calculating the mounting, avoid unnecessary gaps.

Table 2: Vertical load (vertical surface)
MP 40x20x5 / N38

Distance (mm)	Friction coefficient	Pull Force (kg/lbs/g/N)
0 mm	Stal (~0.2)	1.45 kg / 3.19 LBS 1448.0 g / 14.2 N
1 mm	Stal (~0.2)	1.31 kg / 2.88 LBS 1306.0 g / 12.8 N
2 mm	Stal (~0.2)	1.17 kg / 2.58 LBS 1172.0 g / 11.5 N
3 mm	Stal (~0.2)	1.04 kg / 2.30 LBS 1044.0 g / 10.2 N
5 mm	Stal (~0.2)	0.82 kg / 1.80 LBS 818.0 g / 8.0 N
10 mm	Stal (~0.2)	0.42 kg / 0.92 LBS 418.0 g / 4.1 N
15 mm	Stal (~0.2)	0.21 kg / 0.45 LBS 206.0 g / 2.0 N
20 mm	Stal (~0.2)	0.10 kg / 0.23 LBS 104.0 g / 1.0 N
30 mm	Stal (~0.2)	0.03 kg / 0.06 LBS 28.0 g / 0.3 N
50 mm	Stal (~0.2)	0.00 kg / 0.01 LBS 4.0 g / 0.0 N

The following data presents the estimated shear load sufficient to initiate the slippage of the magnet down against a vertical metal surface (assuming typical friction). This parameter varies with the gap size between the magnet and the surface.

Table 3: Vertical assembly (sliding) - vertical pull
MP 40x20x5 / N38

Surface type	Friction coefficient / % Mocy	Max load (kg/lbs/g/N)
Raw steel	µ = 0.3 30% Nominalnej Siły	2.17 kg / 4.79 LBS 2172.0 g / 21.3 N
Painted steel (standard)	µ = 0.2 20% Nominalnej Siły	1.45 kg / 3.19 LBS 1448.0 g / 14.2 N
Oily/slippery steel	µ = 0.1 10% Nominalnej Siły	0.72 kg / 1.60 LBS 724.0 g / 7.1 N
Magnet with anti-slip rubber	µ = 0.5 50% Nominalnej Siły	3.62 kg / 7.98 LBS 3620.0 g / 35.5 N

When placing a element on a upright surface (e.g., a board), it will only hold just approx. 1/5 of nominal attraction strength. Gravitational force and a low friction coefficient cause that products slide down easier than they pull off. Planning a hanger? Remember that the shear force is much weaker than the perpendicular breakaway force. On a smooth steel, the holder will give way down under a much lighter weight. Using a rubber pad can effectively raise the stability.

Table 4: Steel thickness (substrate influence) - power losses
MP 40x20x5 / N38

Steel thickness (mm)	% power	Real pull force (kg/lbs/g/N)
0.5 mm	10%	0.72 kg / 1.60 LBS 724.0 g / 7.1 N
1 mm	25%	1.81 kg / 3.99 LBS 1810.0 g / 17.8 N
2 mm	50%	3.62 kg / 7.98 LBS 3620.0 g / 35.5 N
3 mm	75%	5.43 kg / 11.97 LBS 5430.0 g / 53.3 N
5 mm	100%	7.24 kg / 15.96 LBS 7240.0 g / 71.0 N
10 mm	100%	7.24 kg / 15.96 LBS 7240.0 g / 71.0 N
11 mm	100%	7.24 kg / 15.96 LBS 7240.0 g / 71.0 N
12 mm	100%	7.24 kg / 15.96 LBS 7240.0 g / 71.0 N

A thin metal plate is not enough to take in the entire magnetic field, which weakens actual performance of the holder. Should you install a neodymium to a too thin substrate, the field will penetrate right through and the attraction force will be weaker. To squeeze the maximum of this magnet's power, you require a sufficiently solid element of metal. The saturation effect causes that on thin elements (e.g., car bodies), the holder works worse. We recommend selecting the steel cross-section based on the following data.

Table 5: Thermal stability (stability) - resistance threshold
MP 40x20x5 / N38

Ambient temp. (°C)	Power loss	Remaining pull (kg/lbs/g/N)	Status
20 °C	0.0%	7.24 kg / 15.96 LBS 7240.0 g / 71.0 N	OK
40 °C	-2.2%	7.08 kg / 15.61 LBS 7080.7 g / 69.5 N	OK
60 °C	-4.4%	6.92 kg / 15.26 LBS 6921.4 g / 67.9 N	OK
80 °C	-6.6%	6.76 kg / 14.91 LBS 6762.2 g / 66.3 N
100 °C	-28.8%	5.15 kg / 11.36 LBS 5154.9 g / 50.6 N

Standard neodymium magnets change their properties power after exceeding the maximum temperature. Protect against heat – high temperature can irreversibly damage this product. With every degree above norm, the neodymium's capacity briefly drops. Do not use this product in hot environments exceeding its working range. Too high temperature will cause permanent loss of magnetism.

*Engineering note: Thermal stability is determined by both grade, but also on the magnet's shape. Thin magnets (pancake types) may lose charge permanently under lower heat stress compared to rod magnets. Warning indicator in the table indicates permanent field degradation for this particular item.

Table 6: Two magnets (attraction) - forces in the system
MP 40x20x5 / N38

Gap (mm)	Attraction (kg/lbs) (N-S)	Sliding Force (kg/lbs/g/N)	Repulsion (kg/lbs) (N-N)
0 mm	179.94 kg / 396.69 LBS 5 920 Gs	26.99 kg / 59.50 LBS 26991 g / 264.8 N	N/A
1 mm	171.16 kg / 377.35 LBS 10 277 Gs	25.67 kg / 56.60 LBS 25675 g / 251.9 N	154.05 kg / 339.62 LBS ~0 Gs
2 mm	162.41 kg / 358.05 LBS 10 011 Gs	24.36 kg / 53.71 LBS 24361 g / 239.0 N	146.17 kg / 322.24 LBS ~0 Gs
3 mm	153.87 kg / 339.24 LBS 9 744 Gs	23.08 kg / 50.89 LBS 23081 g / 226.4 N	138.49 kg / 305.31 LBS ~0 Gs
5 mm	137.55 kg / 303.25 LBS 9 213 Gs	20.63 kg / 45.49 LBS 20633 g / 202.4 N	123.80 kg / 272.92 LBS ~0 Gs
10 mm	101.67 kg / 224.14 LBS 7 921 Gs	15.25 kg / 33.62 LBS 15251 g / 149.6 N	91.50 kg / 201.73 LBS ~0 Gs
20 mm	52.00 kg / 114.64 LBS 5 665 Gs	7.80 kg / 17.20 LBS 7800 g / 76.5 N	46.80 kg / 103.18 LBS ~0 Gs
50 mm	6.64 kg / 14.64 LBS 2 025 Gs	1.00 kg / 2.20 LBS 996 g / 9.8 N	5.98 kg / 13.18 LBS ~0 Gs
60 mm	3.59 kg / 7.92 LBS 1 489 Gs	0.54 kg / 1.19 LBS 539 g / 5.3 N	3.23 kg / 7.13 LBS ~0 Gs
70 mm	2.03 kg / 4.48 LBS 1 120 Gs	0.30 kg / 0.67 LBS 305 g / 3.0 N	1.83 kg / 4.03 LBS ~0 Gs
80 mm	1.20 kg / 2.64 LBS 860 Gs	0.18 kg / 0.40 LBS 180 g / 1.8 N	1.08 kg / 2.38 LBS ~0 Gs
90 mm	0.73 kg / 1.62 LBS 673 Gs	0.11 kg / 0.24 LBS 110 g / 1.1 N	0.66 kg / 1.46 LBS ~0 Gs
100 mm	0.47 kg / 1.03 LBS 536 Gs	0.07 kg / 0.15 LBS 70 g / 0.7 N	0.42 kg / 0.92 LBS ~0 Gs

Two magnets attract each other from a wider radius than a magnet and sheet setup. The connection of two magnets generates a stronger field and a wider radius of performance. Designing a solid fastener? Utilize two neodymiums instead of a neodymium and a steel. Remember that when bringing together two magnets, the pinch force is extreme. The levitation is marginally weaker than the attraction, but still impressive.
*The magnetic induction between like poles is approximately ~0 Gs in the exact middle between the magnets (caused by magnetic field nullification).
Attention: Results demonstrate shear force of dual matching magnets (friction coefficient ~0.15 for Ni-Ni layer).

Table 7: Hazards (implants) - warnings
MP 40x20x5 / N38

Object / Device	Limit (Gauss) / mT	Safe distance
Pacemaker	5 Gs (0.5 mT)	24.0 cm
Hearing aid	10 Gs (1.0 mT)	18.5 cm
Mechanical watch	20 Gs (2.0 mT)	14.5 cm
Mobile device	40 Gs (4.0 mT)	11.0 cm
Remote	50 Gs (5.0 mT)	10.5 cm
Payment card	400 Gs (40.0 mT)	4.5 cm
HDD hard drive	600 Gs (60.0 mT)	3.5 cm

Extremely neodym field is a real danger to electronics as well as medical implants. These neodymiums generate a flux that prevents correct functioning of digital equipment. Be aware: the unseen radiation passes through tissues and housings. Special caution must be taken by people with cochlear implants and insulin pumps. Influence will be felt by: automatic timepieces, remotes, membranes, and displays. Do not bring the product near payment cards, hard drives, or sensitive navigation tools.

Table 8: Impact energy (cracking risk) - collision effects
MP 40x20x5 / N38

Start from (mm)	Speed (km/h)	Energy (J)
10 mm	16.84 km/h (4.68 m/s)	0.39 J
30 mm	25.31 km/h (7.03 m/s)	0.87 J
50 mm	32.33 km/h (8.98 m/s)	1.43 J
100 mm	45.65 km/h (12.68 m/s)	2.84 J

Magnetic elements are prone to chipping – a violent impact against metal causes immediate chipping. Control the attraction moment – a neodymium left loose becomes dangerous. Striking energy can destroy the magnet or painful pinches to fingers. Hold the magnet firmly during installation so it doesn't hit with great force against the steel surface. A collision at high speed means shattering of the neodymium. Wear eye protection when handling with large magnets.

Table 9: Corrosion resistance
MP 40x20x5 / 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. The silver nickel coating also serves an aesthetic function but is not fully waterproof.

Table 10: Construction data (Flux)
MP 40x20x5 / N38

Parameter	Value	SI Unit / Description
Magnetic Flux	56 325 Mx	563.3 µWb
P_c Coefficient	0.80	High (Stable)

Total magnetic flux passing through the magnet pole. Key data when building generators and motors. P_c value determines the magnet's operating point.

Table 11: Underwater work (magnet fishing)
MP 40x20x5 / N38

Environment	Effective steel pull	Effect
Air (land)	7.24 kg	Standard
Water (riverbed)	8.29 kg (+1.05 kg buoyancy gain)	+14.5%

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

Contrary to myths, water does not block the magnetic field. Note: for permanent underwater work, we recommend magnets with an anti-corrosive (epoxy) coating.

1. Shear force

*Warning: On a vertical wall, the magnet holds just approx. 20-30% of its max power.

2. Steel saturation

*Thin metal sheet (e.g. computer case) drastically weakens the holding force.

3. Heat tolerance

*For standard magnets, 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) = 0.80

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.

Engineering data and GPSR

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: 030199-2026

Magnet Unit Converter

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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 quick installation to wood, wall, plastic, or metal. It is also often used in advertising for fixing signs and in workshops for organizing tools.

This is a crucial issue when working with model MP 40x20x5 / N38. Neodymium magnets are sintered ceramics, which means they are hard but breakable and inelastic. 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.

These magnets are coated with standard Ni-Cu-Ni plating, which protects them in indoor conditions, but does not ensure full waterproofing. 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 20 mm fits this model. For magnets with a straight hole, a conical head can act like a wedge and burst the magnet. Aesthetic mounting requires selecting the appropriate head size.

The presented product is a ring magnet with dimensions Ø40 mm (outer diameter) and height 5 mm. The pulling force of this model is an impressive 7.24 kg, which translates to 70.98 N in newtons. The product has a [NiCuNi] coating and is made of NdFeB material. Inner hole dimension: 20 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.

Pros as well as cons of neodymium magnets.

Benefits

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

They virtually do not lose power, because even after ten years the performance loss is only ~1% (according to literature),
They do not lose their magnetic properties even under external field action,
The use of an elegant coating of noble metals (nickel, gold, silver) causes the element to be more visually attractive,
Magnetic induction on the working layer of the magnet turns out to be very high,
Due to their durability and thermal resistance, neodymium magnets are capable of operate (depending on the form) even at high temperatures reaching 230°C or more...
Thanks to versatility in constructing and the ability to customize to unusual requirements,
Huge importance in electronics industry – they are used in HDD drives, electric drive systems, medical devices, and industrial machines.
Relatively small size with high pulling force – neodymium magnets offer high power in compact dimensions, which allows their use in miniature devices

Disadvantages

What to avoid - cons of neodymium magnets and proposals for their use:

Susceptibility to cracking is one of their disadvantages. Upon intense impact they can break. We advise keeping them in a strong case, which not only secures them against impacts but also raises their durability
We warn that neodymium magnets can lose their power at high temperatures. To prevent this, we advise our specialized [AH] magnets, which work effectively even at 230°C.
When exposed to humidity, magnets start to rust. To use them in conditions outside, it is recommended to use protective magnets, such as those in rubber or plastics, which prevent oxidation as well as corrosion.
Limited possibility of creating threads in the magnet and complicated shapes - preferred is cover - magnetic holder.
Health risk related to microscopic parts of magnets are risky, when accidentally swallowed, which gains importance in the aspect of protecting the youngest. Furthermore, small elements of these products are able to be problematic in diagnostics medical in case of swallowing.
Due to expensive raw materials, their price exceeds standard values,

Holding force characteristics

Maximum lifting force for a neodymium magnet – what affects it?

Information about lifting capacity was defined for the most favorable conditions, taking into account:

on a plate made of mild steel, effectively closing the magnetic field
possessing a massiveness of at least 10 mm to avoid saturation
with a plane perfectly flat
with zero gap (without paint)
for force applied at a right angle (pull-off, not shear)
at room temperature

What influences lifting capacity in practice

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

Distance – the presence of foreign body (rust, tape, gap) interrupts the magnetic circuit, which lowers capacity steeply (even by 50% at 0.5 mm).
Force direction – declared lifting capacity refers to pulling vertically. When slipping, the magnet exhibits significantly lower power (often approx. 20-30% of maximum force).
Wall thickness – the thinner the sheet, the weaker the hold. Part of the magnetic field penetrates through instead of converting into lifting capacity.
Material type – the best choice is high-permeability steel. Hardened steels may have worse magnetic properties.
Smoothness – full contact is obtained only on smooth steel. Any scratches and bumps create air cushions, weakening the magnet.
Temperature – heating the magnet results in weakening of force. Check the thermal limit for a given model.

Lifting capacity testing was carried out on plates with a smooth surface of optimal thickness, under a perpendicular pulling force, however under attempts to slide the magnet the lifting capacity is smaller. Moreover, even a slight gap between the magnet’s surface and the plate decreases the load capacity.

Safety rules for work with neodymium magnets

Precision electronics

An intense magnetic field interferes with the operation of magnetometers in phones and navigation systems. Do not bring magnets near a smartphone to prevent damaging the sensors.

Crushing risk

Big blocks can smash fingers in a fraction of a second. Never place your hand betwixt two strong magnets.

Implant safety

People with a ICD have to maintain an safe separation from magnets. The magnetism can interfere with the functioning of the life-saving device.

Permanent damage

Standard neodymium magnets (N-type) lose power when the temperature surpasses 80°C. Damage is permanent.

Adults only

Product intended for adults. Tiny parts can be swallowed, causing intestinal necrosis. Keep out of reach of children and animals.

Dust is flammable

Powder created during grinding of magnets is combustible. Avoid drilling into magnets unless you are an expert.

Metal Allergy

It is widely known that the nickel plating (standard magnet coating) is a common allergen. If your skin reacts to metals, avoid touching magnets with bare hands or select encased magnets.

Fragile material

Neodymium magnets are sintered ceramics, meaning they are fragile like glass. Collision of two magnets will cause them cracking into shards.

Respect the power

Use magnets consciously. Their powerful strength can surprise even professionals. Stay alert and respect their force.

Magnetic media

Device Safety: Neodymium magnets can damage data carriers and delicate electronics (heart implants, medical aids, timepieces).

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

MP 40x20x5 / N38 - ring magnet

Technical details - MP 40x20x5 / N38 - ring magnet

Magnetic properties of material N38

Physical properties of sintered neodymium magnets Nd2Fe14B at 20°C

Technical simulation of the product - report

Table 1: Static pull force (pull vs distance) - characteristics MP 40x20x5 / N38

Table 2: Vertical load (vertical surface) MP 40x20x5 / N38

Table 3: Vertical assembly (sliding) - vertical pull MP 40x20x5 / N38

Table 4: Steel thickness (substrate influence) - power losses MP 40x20x5 / N38

Table 5: Thermal stability (stability) - resistance threshold MP 40x20x5 / N38

Table 6: Two magnets (attraction) - forces in the system MP 40x20x5 / N38

Table 7: Hazards (implants) - warnings MP 40x20x5 / N38

Table 8: Impact energy (cracking risk) - collision effects MP 40x20x5 / N38

Table 9: Corrosion resistance MP 40x20x5 / N38

Table 10: Construction data (Flux) MP 40x20x5 / N38

Table 11: Underwater work (magnet fishing) MP 40x20x5 / N38

1. Shear force

2. Steel saturation

3. Heat tolerance

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

Elemental analysis

Environmental data

Pulling force

Magnetic Field

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Pros as well as cons of neodymium magnets.

Benefits

Disadvantages

Holding force characteristics

Maximum lifting force for a neodymium magnet – what affects it?

What influences lifting capacity in practice

Safety rules for work with neodymium magnets

Precision electronics

Crushing risk

Implant safety

Permanent damage

Adults only

Dust is flammable

Metal Allergy

Fragile material

Respect the power

Magnetic media

Physical properties of sintered neodymium magnets Nd₂Fe₁₄B at 20°C

Table 1: Static pull force (pull vs distance) - characteristics
MP 40x20x5 / N38

Table 2: Vertical load (vertical surface)
MP 40x20x5 / N38

Table 3: Vertical assembly (sliding) - vertical pull
MP 40x20x5 / N38

Table 4: Steel thickness (substrate influence) - power losses
MP 40x20x5 / N38

Table 5: Thermal stability (stability) - resistance threshold
MP 40x20x5 / N38

Table 6: Two magnets (attraction) - forces in the system
MP 40x20x5 / N38

Table 7: Hazards (implants) - warnings
MP 40x20x5 / N38

Table 8: Impact energy (cracking risk) - collision effects
MP 40x20x5 / N38

Table 9: Corrosion resistance
MP 40x20x5 / N38

Table 10: Construction data (Flux)
MP 40x20x5 / N38

Table 11: Underwater work (magnet fishing)
MP 40x20x5 / N38