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MP 16x8/4x3 / 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 030396

GTIN/EAN: 5906301812333

5.00

Diameter

16 mm [±0,1 mm]

internal diameter Ø

8/4 mm [±0,1 mm]

Height

3 mm [±0,1 mm]

Weight

4.24 g

Magnetization Direction

↑ axial

Load capacity

2.78 kg / 27.29 N

Magnetic Induction

217.61 mT / 2176 Gs

Coating

[NiCuNi] Nickel

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Technical details - MP 16x8/4x3 / N38 - ring magnet

Specification / characteristics - MP 16x8/4x3 / N38 - ring magnet

properties

properties	values
Cat. no.	030396
GTIN/EAN	5906301812333
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	16 mm [±0,1 mm]
internal diameter Ø	8/4 mm [±0,1 mm]
Height	3 mm [±0,1 mm]
Weight	4.24 g
Magnetization Direction	↑ axial
Load capacity ~ ?	2.78 kg / 27.29 N
Magnetic Induction ~ ?	217.61 mT / 2176 Gs
Coating	[NiCuNi] Nickel
Manufacturing Tolerance	±0.1 mm

Magnetic properties of material N38

Specification / characteristics MP 16x8/4x3 / 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

Engineering analysis of the magnet - data

Presented values represent the outcome of a physical calculation. Values rely on models for the class Nd₂Fe₁₄B. Operational conditions may differ from theoretical values. Please consider these data as a reference point during assembly planning.

Table 1: Static pull force (force vs gap) - characteristics
MP 16x8/4x3 / N38

Distance (mm)	Induction (Gauss) / mT	Pull Force (kg/lbs/g/N)	Risk Status
0 mm	1882 Gs 188.2 mT	2.78 kg / 6.13 pounds 2780.0 g / 27.3 N	warning
1 mm	1746 Gs 174.6 mT	2.39 kg / 5.27 pounds 2392.4 g / 23.5 N	warning
2 mm	1561 Gs 156.1 mT	1.91 kg / 4.22 pounds 1913.9 g / 18.8 N	weak grip
3 mm	1357 Gs 135.7 mT	1.45 kg / 3.19 pounds 1445.8 g / 14.2 N	weak grip
5 mm	969 Gs 96.9 mT	0.74 kg / 1.63 pounds 737.7 g / 7.2 N	weak grip
10 mm	387 Gs 38.7 mT	0.12 kg / 0.26 pounds 117.4 g / 1.2 N	weak grip
15 mm	171 Gs 17.1 mT	0.02 kg / 0.05 pounds 22.9 g / 0.2 N	weak grip
20 mm	87 Gs 8.7 mT	0.01 kg / 0.01 pounds 5.9 g / 0.1 N	weak grip
30 mm	30 Gs 3.0 mT	0.00 kg / 0.00 pounds 0.7 g / 0.0 N	weak grip
50 mm	7 Gs 0.7 mT	0.00 kg / 0.00 pounds 0.0 g / 0.0 N	weak grip

Magnetic force drops significantly with every subsequent millimeter of gap. Keep in mind that even a microscopic distance (e.g., dirt, varnish, dust) noticeably weakens the grip. Magnets hold strongest in perfect adhesion; air break kills the force. Analyze how flashily the load capacity plummet, when the magnet does not touch directly to the metal substrate. When calculating the mounting, avoid redundant distances.

Table 2: Slippage hold (vertical surface)
MP 16x8/4x3 / N38

Distance (mm)	Friction coefficient	Pull Force (kg/lbs/g/N)
0 mm	Stal (~0.2)	0.56 kg / 1.23 pounds 556.0 g / 5.5 N
1 mm	Stal (~0.2)	0.48 kg / 1.05 pounds 478.0 g / 4.7 N
2 mm	Stal (~0.2)	0.38 kg / 0.84 pounds 382.0 g / 3.7 N
3 mm	Stal (~0.2)	0.29 kg / 0.64 pounds 290.0 g / 2.8 N
5 mm	Stal (~0.2)	0.15 kg / 0.33 pounds 148.0 g / 1.5 N
10 mm	Stal (~0.2)	0.02 kg / 0.05 pounds 24.0 g / 0.2 N
15 mm	Stal (~0.2)	0.00 kg / 0.01 pounds 4.0 g / 0.0 N
20 mm	Stal (~0.2)	0.00 kg / 0.00 pounds 2.0 g / 0.0 N
30 mm	Stal (~0.2)	0.00 kg / 0.00 pounds 0.0 g / 0.0 N
50 mm	Stal (~0.2)	0.00 kg / 0.00 pounds 0.0 g / 0.0 N

This section presents the estimated force required to start the sliding of the magnet downwards on a vertical steel plate (considering typical friction). This value varies with the air gap between the magnet and the surface.

Table 3: Vertical assembly (shearing) - vertical pull
MP 16x8/4x3 / N38

Surface type	Friction coefficient / % Mocy	Max load (kg/lbs/g/N)
Raw steel	µ = 0.3 30% Nominalnej Siły	0.83 kg / 1.84 pounds 834.0 g / 8.2 N
Painted steel (standard)	µ = 0.2 20% Nominalnej Siły	0.56 kg / 1.23 pounds 556.0 g / 5.5 N
Oily/slippery steel	µ = 0.1 10% Nominalnej Siły	0.28 kg / 0.61 pounds 278.0 g / 2.7 N
Magnet with anti-slip rubber	µ = 0.5 50% Nominalnej Siły	1.39 kg / 3.06 pounds 1390.0 g / 13.6 N

When mounting a magnet on a upright surface (e.g., a fridge), it will only hold just about 1/5 of its nominal power. Gravitational force as well as a low friction coefficient mean that holders slide down easier than they detach. Want to create a wall mount? Remember that the shear force is noticeably lower than the perpendicular breakaway force. On a smooth steel, the holder will slip down under a significantly smaller weight. Utilizing a rubberized layer can drastically improve the result.

Table 4: Steel thickness (saturation) - power losses
MP 16x8/4x3 / N38

Steel thickness (mm)	% power	Real pull force (kg/lbs/g/N)
0.5 mm	10%	0.28 kg / 0.61 pounds 278.0 g / 2.7 N
1 mm	25%	0.70 kg / 1.53 pounds 695.0 g / 6.8 N
2 mm	50%	1.39 kg / 3.06 pounds 1390.0 g / 13.6 N
3 mm	75%	2.09 kg / 4.60 pounds 2085.0 g / 20.5 N
5 mm	100%	2.78 kg / 6.13 pounds 2780.0 g / 27.3 N
10 mm	100%	2.78 kg / 6.13 pounds 2780.0 g / 27.3 N
11 mm	100%	2.78 kg / 6.13 pounds 2780.0 g / 27.3 N
12 mm	100%	2.78 kg / 6.13 pounds 2780.0 g / 27.3 N

A thin sheet cannot conduct the entire magnetic field, which wastes potential of the magnet. If you mount a strong magnet to a thin surface, the field will pass right through and the holding will be smaller. To achieve the maximum of this neodymium's power, you need a suitably thick backing of metal. The saturation effect means that on delicate walls (e.g., appliance housings), the product shows lower pull force. We suggest choosing the steel cross-section from these parameters.

Table 5: Working in heat (material behavior) - power drop
MP 16x8/4x3 / N38

Ambient temp. (°C)	Power loss	Remaining pull (kg/lbs/g/N)	Status
20 °C	0.0%	2.78 kg / 6.13 pounds 2780.0 g / 27.3 N	OK
40 °C	-2.2%	2.72 kg / 5.99 pounds 2718.8 g / 26.7 N	OK
60 °C	-4.4%	2.66 kg / 5.86 pounds 2657.7 g / 26.1 N
80 °C	-6.6%	2.60 kg / 5.72 pounds 2596.5 g / 25.5 N
100 °C	-28.8%	1.98 kg / 4.36 pounds 1979.4 g / 19.4 N

Standard neodymium magnets change their properties strength past the thermal threshold. Watch out for overheating – high temperature can permanently destroy this product. As the temperature rises, the magnet's power briefly lowers. Refrain from using this product close to ovens exceeding its safe range. Ignoring the limit will lead to destruction of magnetic properties.

*Important note: Temperature resistance depends not only on the material grade, as well as the dimension ratios. Thin magnets (pancake types) may lose charge permanently at lower temperatures compared to rod magnets. The danger warning in the table signals a risk of irreversible loss for this particular item.

Table 6: Magnet-Magnet interaction (attraction) - field range
MP 16x8/4x3 / N38

Gap (mm)	Attraction (kg/lbs) (N-S)	Lateral Force (kg/lbs/g/N)	Repulsion (kg/lbs) (N-N)
0 mm	3.50 kg / 7.71 pounds 3 330 Gs	0.52 kg / 1.16 pounds 525 g / 5.1 N	N/A
1 mm	3.28 kg / 7.23 pounds 3 644 Gs	0.49 kg / 1.08 pounds 492 g / 4.8 N	2.95 kg / 6.51 pounds ~0 Gs
2 mm	3.01 kg / 6.64 pounds 3 492 Gs	0.45 kg / 1.00 pounds 452 g / 4.4 N	2.71 kg / 5.97 pounds ~0 Gs
3 mm	2.71 kg / 5.98 pounds 3 316 Gs	0.41 kg / 0.90 pounds 407 g / 4.0 N	2.44 kg / 5.39 pounds ~0 Gs
5 mm	2.11 kg / 4.64 pounds 2 920 Gs	0.32 kg / 0.70 pounds 316 g / 3.1 N	1.90 kg / 4.18 pounds ~0 Gs
10 mm	0.93 kg / 2.05 pounds 1 939 Gs	0.14 kg / 0.31 pounds 139 g / 1.4 N	0.84 kg / 1.84 pounds ~0 Gs
20 mm	0.15 kg / 0.33 pounds 773 Gs	0.02 kg / 0.05 pounds 22 g / 0.2 N	0.13 kg / 0.29 pounds ~0 Gs
50 mm	0.00 kg / 0.01 pounds 98 Gs	0.00 kg / 0.00 pounds 0 g / 0.0 N	0.00 kg / 0.00 pounds ~0 Gs
60 mm	0.00 kg / 0.00 pounds 60 Gs	0.00 kg / 0.00 pounds 0 g / 0.0 N	0.00 kg / 0.00 pounds ~0 Gs
70 mm	0.00 kg / 0.00 pounds 40 Gs	0.00 kg / 0.00 pounds 0 g / 0.0 N	0.00 kg / 0.00 pounds ~0 Gs
80 mm	0.00 kg / 0.00 pounds 27 Gs	0.00 kg / 0.00 pounds 0 g / 0.0 N	0.00 kg / 0.00 pounds ~0 Gs
90 mm	0.00 kg / 0.00 pounds 20 Gs	0.00 kg / 0.00 pounds 0 g / 0.0 N	0.00 kg / 0.00 pounds ~0 Gs
100 mm	0.00 kg / 0.00 pounds 14 Gs	0.00 kg / 0.00 pounds 0 g / 0.0 N	0.00 kg / 0.00 pounds ~0 Gs

Two strong neodymiums interact from a wider radius than a magnet and sheet setup. The setup of magnet-to-magnet creates a more powerful interaction and a further horizon of operation. Planning to create a powerful holder? Use a pair of magnets instead of a neodymium and a striker plate. Be careful that when connecting a pair of magnets, the impact force is massive. The levitation is a bit weaker than the attraction, but still large.
*Field value between like poles drops to ~0 Gs at the geometric center of the gap (caused by magnetic field nullification).
Important: Figures show sliding force of a pair of matching magnets (friction ~0.15 for Ni-Ni layer).

Table 7: Hazards (electronics) - precautionary measures
MP 16x8/4x3 / N38

Object / Device	Limit (Gauss) / mT	Safe distance
Pacemaker	5 Gs (0.5 mT)	6.0 cm
Hearing aid	10 Gs (1.0 mT)	4.5 cm
Timepiece	20 Gs (2.0 mT)	3.5 cm
Mobile device	40 Gs (4.0 mT)	3.0 cm
Car key	50 Gs (5.0 mT)	2.5 cm
Payment card	400 Gs (40.0 mT)	1.0 cm
HDD hard drive	600 Gs (60.0 mT)	1.0 cm

A strong magnetic field is a large risk to IT equipment and pacemakers. These neodymiums generate a flux that disrupts operation of digital equipment. Notice: the invisible magnetic field passes through tissues and housings. Exceptional care must be taken by people with cochlear implants and drug dispensers. The risk also applies to: automatic timepieces, car keys, speakers, and displays. Do not place the magnet near cards, hard drives, or precise measuring instruments.

Table 8: Dynamics (cracking risk) - warning
MP 16x8/4x3 / N38

Start from (mm)	Speed (km/h)	Energy (J)
10 mm	26.50 km/h (7.36 m/s)	0.11 J
30 mm	44.74 km/h (12.43 m/s)	0.33 J
50 mm	57.74 km/h (16.04 m/s)	0.55 J
100 mm	81.66 km/h (22.68 m/s)	1.09 J

Magnetic elements are prone to chipping – a collision with steel risks their cracking. Watch the impact speed – a neodymium left loose turns into a projectile. Impact energy can trigger coating fragments or injury to skin. Be sure to control the product during bringing near metal so it doesn't hit with great force against the steel surface. A contact at a velocity of dozens of km/h means shattering of the magnet. Wear safety glasses when playing with powerful specimens.

Table 9: Anti-corrosion coating durability
MP 16x8/4x3 / 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. Moisture resistance is crucial for installations in bathrooms or outdoors.

Table 10: Construction data (P_c)
MP 16x8/4x3 / N38

Parameter	Value	SI Unit / Description
Magnetic Flux	3 743 Mx	37.4 µWb
P_c Coefficient	0.24	Low (Flat)

Total magnetic flux passing through the magnet pole. Essential parameter for generator designers as well as sensors. P_c value defines the magnet's operating point.

Table 11: Physics of underwater searching
MP 16x8/4x3 / N38

Environment	Effective steel pull	Effect
Air (land)	2.78 kg	Standard
Water (riverbed)	3.18 kg (+0.40 kg buoyancy gain)	+14.5%

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

The magnetic field penetrates through water without any losses. As a result, your magnet will pull a heavier object from the bottom than if you lifted it in the air.

1. Vertical hold

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

2. Steel thickness impact

*Thin metal sheet (e.g. computer case) significantly reduces the holding force.

3. Power loss vs temp

*For N38 grade, 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) = 0.24

This simulation demonstrates the magnetic stability of the selected magnet under specific geometric conditions. The solid red line represents the demagnetization curve (material potential), while the dashed blue line is the load line based on the magnet's geometry. The P_c (Permeance Coefficient), also known as the load line slope, is a dimensionless value that describes the relationship between the magnet's shape and its magnetic stability. The intersection of these two lines (the black dot) is the operating point — it determines the actual magnetic flux density generated by the magnet in this specific configuration. A higher P_c value means the magnet is more 'slender' (tall relative to its area), resulting in a higher operating point and better resistance to irreversible demagnetization caused by external fields or temperature. A value of 0.42 is relatively low (typical for flat magnets), meaning the operating point is closer to the 'knee' of the curve — caution is advised when operating at temperatures near the maximum limit to avoid strength loss.

Technical and environmental data

Elemental analysis

iron (Fe)	64% – 68%
neodymium (Nd)	29% – 32%
boron (B)	1.1% – 1.2%
dysprosium (Dy)	0.5% – 2.0%
coating (Ni-Cu-Ni)	< 0.05%

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: 030396-2026

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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. 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 2.78 kg works great as a door latch, speaker holder, or mounting element in devices.

This material behaves more like porcelain than steel, so it doesn't forgive mistakes during mounting. 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. 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.

The inner hole diameter determines the maximum size of the mounting element. If the magnet does not have a chamfer (cone), we recommend using a screw with a flat or cylindrical head, or possibly using a washer. Always check that the screw head is not larger than the outer diameter of the magnet (16 mm), so it doesn't protrude beyond the outline.

It is a magnetic ring with a diameter of 16 mm and thickness 3 mm. The pulling force of this model is an impressive 2.78 kg, which translates to 27.29 N in newtons. The product has a [NiCuNi] coating and is made of NdFeB material. Inner hole dimension: 8/4 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 as well as weaknesses of Nd₂Fe₁₄B magnets.

Pros

Besides their durability, neodymium magnets are valued for these benefits:

They retain attractive force for around ten years – the loss is just ~1% (based on simulations),
They possess excellent resistance to magnetic field loss due to opposing magnetic fields,
Thanks to the smooth finish, the coating of Ni-Cu-Ni, gold, or silver gives an aesthetic appearance,
They are known for high magnetic induction at the operating surface, making them more effective,
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...
Due to the ability of precise forming and adaptation to individualized needs, magnetic components can be created in a variety of forms and dimensions, which increases their versatility,
Key role in modern technologies – they are commonly used in HDD drives, drive modules, medical equipment, and industrial machines.
Thanks to efficiency per cm³, small magnets offer high operating force, in miniature format,

Weaknesses

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

Brittleness is one of their disadvantages. Upon strong impact they can break. We recommend keeping them in a special holder, which not only secures them against impacts but also raises their durability
Neodymium magnets lose 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 durability even at temperatures up to 230°C
Due to the susceptibility of magnets to corrosion in a humid environment, we suggest using waterproof magnets made of rubber, plastic or other material immune to moisture, in case of application outdoors
Limited ability of producing nuts in the magnet and complex shapes - recommended is a housing - magnet mounting.
Possible danger related to microscopic parts of magnets can be dangerous, when accidentally swallowed, which becomes key in the context of child health protection. Additionally, small components of these devices are able to 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

Holding force characteristics

Highest magnetic holding force – what affects it?

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

using a sheet made of high-permeability steel, functioning as a ideal flux conductor
possessing a thickness of minimum 10 mm to avoid saturation
characterized by lack of roughness
under conditions of no distance (metal-to-metal)
under perpendicular force vector (90-degree angle)
at conditions approx. 20°C

Practical lifting capacity: influencing factors

Please note that the application force will differ influenced by elements below, starting with the most relevant:

Air gap (between the magnet and the plate), since even a very small distance (e.g. 0.5 mm) can cause a drastic drop in lifting capacity by up to 50% (this also applies to paint, corrosion or dirt).
Direction of force – highest force is reached only during perpendicular pulling. The force required to slide of the magnet along the surface is standardly many times smaller (approx. 1/5 of the lifting capacity).
Metal thickness – the thinner the sheet, the weaker the hold. Magnetic flux passes through the material instead of generating force.
Steel grade – ideal substrate is high-permeability steel. Cast iron may generate lower lifting capacity.
Surface quality – the more even the surface, the better the adhesion and stronger the hold. Unevenness creates an air distance.
Thermal environment – temperature increase causes a temporary drop of induction. It is worth remembering the thermal limit for a given model.

Holding force was checked on the plate surface of 20 mm thickness, when the force acted perpendicularly, whereas under shearing force the load capacity is reduced by as much as fivefold. Additionally, even a minimal clearance between the magnet and the plate decreases the lifting capacity.

Safe handling of NdFeB magnets

Skin irritation risks

A percentage of the population have a sensitization to nickel, which is the common plating for NdFeB magnets. Extended handling can result in skin redness. It is best to use protective gloves.

Respect the power

Be careful. Neodymium magnets act from a long distance and connect with huge force, often faster than you can move away.

Cards and drives

Data protection: Neodymium magnets can damage data carriers and delicate electronics (pacemakers, hearing aids, mechanical watches).

Product not for children

Strictly keep magnets away from children. Ingestion danger is high, and the consequences of magnets clamping inside the body are fatal.

Life threat

Warning for patients: Strong magnetic fields affect medical devices. Keep minimum 30 cm distance or ask another person to work with the magnets.

Thermal limits

Monitor thermal conditions. Exposing the magnet to high heat will destroy its properties and strength.

Crushing force

Mind your fingers. Two powerful magnets will snap together immediately with a force of massive weight, destroying anything in their path. Exercise extreme caution!

Magnets are brittle

Despite the nickel coating, the material is delicate and not impact-resistant. Avoid impacts, as the magnet may crumble into sharp, dangerous pieces.

Threat to navigation

A strong magnetic field negatively affects the functioning of compasses in phones and navigation systems. Keep magnets near a device to prevent breaking the sensors.

Combustion hazard

Machining of NdFeB material poses a fire risk. Neodymium dust oxidizes rapidly with oxygen and is hard to extinguish.

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

MP 16x8/4x3 / N38 - ring magnet

Technical details - MP 16x8/4x3 / N38 - ring magnet

Magnetic properties of material N38

Physical properties of sintered neodymium magnets Nd2Fe14B at 20°C

Engineering analysis of the magnet - data

Table 1: Static pull force (force vs gap) - characteristics MP 16x8/4x3 / N38

Table 2: Slippage hold (vertical surface) MP 16x8/4x3 / N38

Table 3: Vertical assembly (shearing) - vertical pull MP 16x8/4x3 / N38

Table 4: Steel thickness (saturation) - power losses MP 16x8/4x3 / N38

Table 5: Working in heat (material behavior) - power drop MP 16x8/4x3 / N38

Table 6: Magnet-Magnet interaction (attraction) - field range MP 16x8/4x3 / N38

Table 7: Hazards (electronics) - precautionary measures MP 16x8/4x3 / N38

Table 8: Dynamics (cracking risk) - warning MP 16x8/4x3 / N38

Table 9: Anti-corrosion coating durability MP 16x8/4x3 / N38

Table 10: Construction data (Pc) MP 16x8/4x3 / N38

Table 11: Physics of underwater searching MP 16x8/4x3 / N38

1. Vertical hold

2. Steel thickness impact

3. Power loss vs temp

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

Elemental analysis

Environmental data

Magnet pull force

Magnetic Induction

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SM 32x125 [2xM8] / N42 - magnetic separator

Strengths as well as weaknesses of Nd2Fe14B magnets.

Pros

Weaknesses

Holding force characteristics

Highest magnetic holding force – what affects it?

Practical lifting capacity: influencing factors

Safe handling of NdFeB magnets

Skin irritation risks

Respect the power

Cards and drives

Product not for children

Life threat

Thermal limits

Crushing force

Magnets are brittle

Threat to navigation

Combustion hazard

Physical properties of sintered neodymium magnets Nd₂Fe₁₄B at 20°C

Table 1: Static pull force (force vs gap) - characteristics
MP 16x8/4x3 / N38

Table 2: Slippage hold (vertical surface)
MP 16x8/4x3 / N38

Table 3: Vertical assembly (shearing) - vertical pull
MP 16x8/4x3 / N38

Table 4: Steel thickness (saturation) - power losses
MP 16x8/4x3 / N38

Table 5: Working in heat (material behavior) - power drop
MP 16x8/4x3 / N38

Table 6: Magnet-Magnet interaction (attraction) - field range
MP 16x8/4x3 / N38

Table 7: Hazards (electronics) - precautionary measures
MP 16x8/4x3 / N38

Table 8: Dynamics (cracking risk) - warning
MP 16x8/4x3 / N38

Table 9: Anti-corrosion coating durability
MP 16x8/4x3 / N38

Table 10: Construction data (P_c)
MP 16x8/4x3 / N38

Table 11: Physics of underwater searching
MP 16x8/4x3 / N38

Strengths as well as weaknesses of Nd₂Fe₁₄B magnets.