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MW 9.5x1 / N38 - cylindrical magnet

cylindrical magnet

Catalog no 010107

GTIN/EAN: 5906301811060

5.00
Load capacity 0.40 kg / 3.96 N Magnetic Induction 127.68 mT / 1277 Gs
Diameter Ø
9.5 mm [±0,1 mm]
Height
1 mm [±0,1 mm]
Weight
0.53 g
Magnetization Direction
↑ axial
Coating
[NiCuNi] Nickel

How we measure these parameters — certificates and measurements

see specifications »

0.240 zł net / pcs

0.295 zł with VAT (23% VAT) / pcs

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Frequently asked questions

What is the maximum working temperature of a disc magnet?
Standard N-series grades work up to 80 °C. Grades N50, N52 and N54 have a lower limit of 60 °C, because coercivity falls as BHmax rises. Higher temperatures require the H (120 °C), SH (150 °C), UH (180 °C), EH (200 °C) or AH (230 °C) series. Within the working range the magnet loses about 0.11% of its induction per degree, and that loss is reversible.
What is the difference between N38, N42 and N52?
The number after N is the energy product BHmax. Moving from N38 to N52 raises it by several tens of percent, but the real holding force increases by roughly 20%, because force also depends on geometry and on the magnetic circuit. N52 costs about twice as much as N42, so for most mounting work N38–N42 is the best price-to-force ratio.
What is the dimensional tolerance?
±0.1 mm as standard, ±0.05 mm to order. The tolerance is stated next to the dimensions on every product page.

Guides from the knowledge base

Engineering report for this magnet

Full PDF analysis: pull and shear force, effect of distance, temperature and plate thickness, safety distances and the demagnetization curve.

PDF report Calculator
Want to talk magnets?

Call us now +48 888 99 98 98 alternatively let us know using contact form the contact section.
Specifications and structure of a neodymium magnet can be estimated using our power calculator.

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Product card - MW 9.5x1 / N38 - cylindrical magnet

Specification / characteristics - MW 9.5x1 / N38 - cylindrical magnet

properties
properties values
Cat. no. 010107
GTIN/EAN 5906301811060
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 Ø 9.5 mm [±0,1 mm]
Height 1 mm [±0,1 mm]
Weight 0.53 g
Magnetization Direction ↑ axial
Load capacity ~ ? 0.40 kg / 3.96 N
Magnetic Induction ~ ? 127.68 mT / 1277 Gs
Coating [NiCuNi] Nickel
Manufacturing Tolerance ±0.1 mm

Magnetic properties of material N38

Specification / characteristics MW 9.5x1 / N38 - cylindrical magnet
properties values units
Remanence Br ? 12.2-12.6 kGs
Remanence Br ? 1220-1260 mT
Coercivity bHc ? 10.8-11.5 kOe
Coercivity bHc ? 860-915 kA/m
Intrinsic coercivity iHc ≥ 12 kOe
Intrinsic coercivity iHc ≥ 955 kA/m
Energy product BHmax ? 36-38 BH max MGOe
Energy product BHmax ? 287-303 BH max KJ/m
Maximum working temperature ? ≤ 80 °C

Physical properties of sintered neodymium magnets Nd2Fe14B at 20°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 310 °C
Curie Temperature TF 590 °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 modeling of the product - data

The following values represent the result of a engineering analysis. Results rely on models for the class Nd2Fe14B. Actual parameters may deviate from the simulation results. Treat these data as a preliminary roadmap when designing systems.

Table 1: Static pull force (pull vs gap) - characteristics
MW 9.5x1 / N38

Distance (mm) Induction (Gauss) / mT Pull Force (kg/lbs/g/N) Risk Status
0 mm 1276 Gs
127.6 mT
 0.40 kg / 0.88 LBS
400.0 g / 3.9 N
 low risk
1 mm 1129 Gs
112.9 mT
 0.31 kg / 0.69 LBS
312.8 g / 3.1 N
 low risk
2 mm 905 Gs
90.5 mT
 0.20 kg / 0.44 LBS
201.0 g / 2.0 N
 low risk
3 mm 683 Gs
68.3 mT
 0.11 kg / 0.25 LBS
114.5 g / 1.1 N
 low risk
5 mm 366 Gs
36.6 mT
 0.03 kg / 0.07 LBS
32.9 g / 0.3 N
 low risk
10 mm 92 Gs
9.2 mT
 0.00 kg / 0.00 LBS
2.1 g / 0.0 N
 low risk
15 mm 33 Gs
3.3 mT
 0.00 kg / 0.00 LBS
0.3 g / 0.0 N
 low risk
20 mm 15 Gs
1.5 mT
 0.00 kg / 0.00 LBS
0.1 g / 0.0 N
 low risk
30 mm 5 Gs
0.5 mT
 0.00 kg / 0.00 LBS
0.0 g / 0.0 N
 low risk
50 mm 1 Gs
0.1 mT
 0.00 kg / 0.00 LBS
0.0 g / 0.0 N
 low risk
Magnetic force drops sharply per each millimeter of gap. Note that even a microscopic distance (e.g., contamination, varnish, rust) significantly reduces the pull force. Magnets work optimally during direct contact; air break kills the power. Observe how flashily the load capacity fall, when the product does not adhere tightly to the steel surface. When designing the arrangement, avoid additional spacers.

Table 2: Shear force (vertical surface)
MW 9.5x1 / N38

Distance (mm) Friction coefficient Pull Force (kg/lbs/g/N)
0 mm Stal (~0.2) 0.08 kg / 0.18 LBS
80.0 g / 0.8 N
1 mm Stal (~0.2) 0.06 kg / 0.14 LBS
62.0 g / 0.6 N
2 mm Stal (~0.2) 0.04 kg / 0.09 LBS
40.0 g / 0.4 N
3 mm Stal (~0.2) 0.02 kg / 0.05 LBS
22.0 g / 0.2 N
5 mm Stal (~0.2) 0.01 kg / 0.01 LBS
6.0 g / 0.1 N
10 mm Stal (~0.2) 0.00 kg / 0.00 LBS
0.0 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 defines the approximate weight limit needed to initiate the downward movement of the magnet downwards along a upright steel plate (assuming standard friction coefficient). This parameter depends on the distance between the magnet and the metal.

Table 3: Wall mounting (shearing) - behavior on slippery surfaces
MW 9.5x1 / N38

Surface type Friction coefficient / % Mocy Max load (kg/lbs/g/N)
Raw steel
µ = 0.3 30% Nominalnej Siły
0.12 kg / 0.26 LBS
120.0 g / 1.2 N
Painted steel (standard)
µ = 0.2 20% Nominalnej Siły
0.08 kg / 0.18 LBS
80.0 g / 0.8 N
Oily/slippery steel
µ = 0.1 10% Nominalnej Siły
0.04 kg / 0.09 LBS
40.0 g / 0.4 N
Magnet with anti-slip rubber
µ = 0.5 50% Nominalnej Siły
0.20 kg / 0.44 LBS
200.0 g / 2.0 N
When mounting a element on a upright plane (e.g., a fridge), it you can count on barely approx. 1/5 of its maximum pull force. Gravity and a low friction coefficient cause that holders move down easier than they pop off the substrate. Designing a wall mount? Remember that the shear force is significantly lower than the maximum static pull force. On a smooth steel, the magnet will slide down under a much lighter weight. Utilizing a rubberized pad can effectively increase the grip.

Table 4: Steel thickness (substrate influence) - power losses
MW 9.5x1 / N38

Steel thickness (mm) % power Real pull force (kg/lbs/g/N)
0.5 mm
10%
 0.04 kg / 0.09 LBS
40.0 g / 0.4 N
1 mm
25%
 0.10 kg / 0.22 LBS
100.0 g / 1.0 N
2 mm
50%
 0.20 kg / 0.44 LBS
200.0 g / 2.0 N
3 mm
75%
 0.30 kg / 0.66 LBS
300.0 g / 2.9 N
5 mm
100%
 0.40 kg / 0.88 LBS
400.0 g / 3.9 N
10 mm
100%
 0.40 kg / 0.88 LBS
400.0 g / 3.9 N
11 mm
100%
 0.40 kg / 0.88 LBS
400.0 g / 3.9 N
12 mm
100%
 0.40 kg / 0.88 LBS
400.0 g / 3.9 N
A thin metal plate is unable to absorb the entire magnetic field, which wastes potential of the holder. Should you mount a strong magnet to a thin surface, the magnetism will pass right through and the holding will be smaller. To squeeze full efficiency of this magnet's potential, you need a suitably thick element of metal. The saturation phenomenon means that on sheet metal structures (e.g., thin profiles), the magnet shows lower pull force. We advise picking the steel thickness based on the following data.

Table 5: Working in heat (material behavior) - thermal limit
MW 9.5x1 / N38

Ambient temp. (°C) Power loss Remaining pull (kg/lbs/g/N) Status
20 °C 0.0% 0.40 kg / 0.88 LBS
400.0 g / 3.9 N
 OK
40 °C -2.2% 0.39 kg / 0.86 LBS
391.2 g / 3.8 N
 OK
60 °C -4.4% 0.38 kg / 0.84 LBS
382.4 g / 3.8 N
80 °C -6.6% 0.37 kg / 0.82 LBS
373.6 g / 3.7 N
100 °C -28.8% 0.28 kg / 0.63 LBS
284.8 g / 2.8 N
Ordinary NdFeB products lose strength after exceeding the maximum temperature. Avoid high temperatures – excessive heat can irreversibly demagnetize this product. With every degree above norm, the neodymium's capacity momentarily lowers. Refrain from using this product close to heaters exceeding its working range. Ignoring the limit will lead to permanent loss of magnetic properties.
*Technical advisory: Thermal stability depends not only on the material grade, and the Permeance Coefficient Pc. Thin magnets (low Pc) are more susceptible to demagnetization at lower temperatures compared to rod magnets. Red status in the table signals a risk of irreversible loss for this specific geometry.

Table 6: Magnet-Magnet interaction (repulsion) - field range
MW 9.5x1 / N38

Gap (mm) Attraction (kg/lbs) (N-S) Sliding Force (kg/lbs/g/N) Repulsion (kg/lbs) (N-N)
0 mm 0.71 kg / 1.57 LBS
2 403 Gs
0.11 kg / 0.24 LBS
107 g / 1.0 N
 N/A
1 mm 0.65 kg / 1.43 LBS
2 436 Gs
0.10 kg / 0.21 LBS
97 g / 1.0 N
 0.58 kg / 1.29 LBS
~0 Gs
2 mm 0.56 kg / 1.23 LBS
2 257 Gs
0.08 kg / 0.18 LBS
84 g / 0.8 N
 0.50 kg / 1.10 LBS
~0 Gs
3 mm 0.46 kg / 1.00 LBS
2 041 Gs
0.07 kg / 0.15 LBS
68 g / 0.7 N
 0.41 kg / 0.90 LBS
~0 Gs
5 mm 0.27 kg / 0.60 LBS
1 580 Gs
0.04 kg / 0.09 LBS
41 g / 0.4 N
 0.25 kg / 0.54 LBS
~0 Gs
10 mm 0.06 kg / 0.13 LBS
732 Gs
0.01 kg / 0.02 LBS
9 g / 0.1 N
 0.05 kg / 0.12 LBS
~0 Gs
20 mm 0.00 kg / 0.01 LBS
183 Gs
0.00 kg / 0.00 LBS
1 g / 0.0 N
 0.00 kg / 0.00 LBS
~0 Gs
50 mm 0.00 kg / 0.00 LBS
16 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
10 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
6 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
4 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
3 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
2 Gs
0.00 kg / 0.00 LBS
0 g / 0.0 N
 0.00 kg / 0.00 LBS
~0 Gs
Two magnets attract each other from a much further distance than a neodymium and metal combination. The setup of two magnets creates a more powerful interaction and a further horizon of operation. Want to build a strong closure? Apply two magnets instead of a neodymium and a steel. Remember that when connecting a pair of magnets, the impact force is extreme. The levitation is a bit weaker than the attraction, but still impressive.
*The magnetic induction in repulsion mode drops to ~0 Gs at the midpoint between the magnets (due to field cancellation).
Attention: Figures apply to shear force of two matching magnets (friction coefficient ~0.15 for Ni-Ni coating).

Table 7: Hazards (implants) - precautionary measures
MW 9.5x1 / N38

Object / Device Limit (Gauss) / mT Safe distance
Pacemaker 5 Gs (0.5 mT) 3.0 cm
Hearing aid 10 Gs (1.0 mT) 2.5 cm
Timepiece 20 Gs (2.0 mT) 2.0 cm
Phone / Smartphone 40 Gs (4.0 mT) 1.5 cm
Car key 50 Gs (5.0 mT) 1.5 cm
Payment card 400 Gs (40.0 mT) 0.5 cm
HDD hard drive 600 Gs (60.0 mT) 0.5 cm
Powerful magnet radiation is a large risk to electronic devices as well as medical implants. These NdFeB products produce a flux that disrupts operation of digital equipment. Be aware: the invisible magnetic field acts through matter and glass. Special caution must be taken by people with hearing aids and drug dispensers. The risk also applies to: mechanical watches, remotes, speakers, and displays. Avoid contact with magnetic cards, hard drives, or precise measuring instruments.

Table 8: Impact energy (cracking risk) - warning
MW 9.5x1 / N38

Start from (mm) Speed (km/h) Energy (J) Predicted outcome
10 mm 21.42 km/h
(5.95 m/s)
 0.01 J
30 mm 21.48 km/h
(5.97 m/s)
 0.01 J
50 mm 21.48 km/h
(5.97 m/s)
 0.01 J
100 mm 21.48 km/h
(5.97 m/s)
 0.01 J
Neodymium magnets are prone to chipping – a collision with steel risks their cracking. Control the attraction moment – a magnet released freely becomes dangerous. Impact energy can cause material chips or painful pinches to fingers. Always hold the magnet during installation so it doesn't hit with great force against the metal. A contact at a velocity of dozens of km/h means shattering of the magnet. Use safety goggles when working with large magnets.

Table 9: Corrosion resistance
MW 9.5x1 / N38

Technical parameter Value / Description
Coating type [NiCuNi] Nickel
Layer structure Nickel - Copper - Nickel
Layer thickness 10-20 µm
Salt spray test (SST) ? 24 h
Recommended environment Indoors only (dry)
Neodymium magnets are highly susceptible to corrosion without proper protection. Note the thickness of the protective layer.

Table 10: Construction data (Flux)
MW 9.5x1 / N38

Parameter Value SI Unit / Description
Magnetic Flux 1 184 Mx 11.8 µWb
Pc Coefficient 0.16 Low (Flat)
Total magnetic flux passing through the pole surface. Key data in coil applications as well as sensors. The Pc coefficient determines the magnet's operating point.

Table 11: Hydrostatics and buoyancy
MW 9.5x1 / N38

Environment Effective steel pull Effect
Air (land) 0.40 kg Standard
Water (riverbed) 0.46 kg
(+0.06 kg buoyancy gain)
+14.5%
Rust risk: Remember to wipe the magnet thoroughly after removing it from water and apply a protective layer (e.g., oil) to avoid corrosion.
In water, the magnet feels stronger thanks to Archimedes' principle. However, remember the water resistance when pulling the rope quickly.

1. Vertical hold

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

2. Steel saturation

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

3. Heat tolerance

*For N38 grade, the critical limit is 80°C.

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

chart generated for the permeance coefficient Pc (Permeance Coefficient) = 0.16

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 Pc (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 Pc 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

Material specification

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: 010107-2026
Measurement Calculator

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Advantages as well as disadvantages of neodymium magnets.

Benefits

Besides their immense strength, neodymium magnets offer the following advantages:
  • They have stable power, and over more than 10 years their attraction force decreases symbolically – ~1% (according to theory),
  • They are resistant to demagnetization induced by presence of other magnetic fields,
  • A magnet with a shiny gold surface has an effective appearance,
  • The surface of neodymium magnets generates a powerful magnetic field – this is a key feature,
  • Neodymium magnets are characterized by very high magnetic induction on the magnet surface and can work (depending on the shape) even at a temperature of 230°C or more...
  • Possibility of precise modeling as well as adapting to concrete requirements,
  • Versatile presence in future technologies – they are used in computer drives, electromotive mechanisms, precision medical tools, and complex engineering applications.
  • Thanks to concentrated force, small magnets offer high operating force, in miniature format,

Cons

Disadvantages of NdFeB magnets:
  • They are fragile upon too strong impacts. To avoid cracks, it is worth protecting magnets in a protective case. Such protection not only shields the magnet but also increases its resistance to damage
  • We warn that neodymium magnets can lose their strength at high temperatures. To prevent this, we recommend our specialized [AH] magnets, which work effectively even at 230°C.
  • Due to the susceptibility of magnets to corrosion in a humid environment, we advise using waterproof magnets made of rubber, plastic or other material resistant to moisture, when using outdoors
  • We suggest a housing - magnetic holder, due to difficulties in creating nuts inside the magnet and complicated forms.
  • Health risk to health – tiny shards of magnets are risky, in case of ingestion, which is particularly important in the context of child health protection. Additionally, tiny parts of these magnets can be problematic in diagnostics medical when they are in the body.
  • Higher cost of purchase is one of the disadvantages compared to ceramic magnets, especially in budget applications

Lifting parameters

Maximum lifting force for a neodymium magnet – what contributes to it?

The lifting capacity listed is a measurement result conducted under standard conditions:
  • with the application of a yoke made of low-carbon steel, ensuring maximum field concentration
  • possessing a thickness of minimum 10 mm to ensure full flux closure
  • characterized by lack of roughness
  • under conditions of ideal adhesion (surface-to-surface)
  • for force acting at a right angle (pull-off, not shear)
  • at standard ambient temperature

Magnet lifting force in use – key factors

Please note that the working load will differ subject to the following factors, in order of importance:
  • Distance (betwixt the magnet and the plate), as even a tiny distance (e.g. 0.5 mm) results in a decrease in force by up to 50% (this also applies to paint, rust or dirt).
  • Angle of force application – highest force is reached only during perpendicular pulling. The force required to slide of the magnet along the plate is standardly many times smaller (approx. 1/5 of the lifting capacity).
  • Plate thickness – insufficiently thick steel does not close the flux, causing part of the power to be escaped into the air.
  • Chemical composition of the base – mild steel gives the best results. Alloy admixtures reduce magnetic properties and lifting capacity.
  • Surface finish – full contact is possible only on smooth steel. Rough texture create air cushions, reducing force.
  • Temperature influence – hot environment reduces pulling force. Too high temperature can permanently demagnetize the magnet.

Holding force was tested on a smooth steel plate of 20 mm thickness, when a perpendicular force was applied, in contrast under parallel forces the lifting capacity is smaller. Additionally, even a small distance between the magnet and the plate lowers the lifting capacity.

Warnings
Fragile material

Beware of splinters. Magnets can fracture upon violent connection, ejecting shards into the air. Eye protection is mandatory.

Medical implants

Warning for patients: Powerful magnets affect electronics. Maintain minimum 30 cm distance or request help to handle the magnets.

Impact on smartphones

Note: rare earth magnets produce a field that disrupts precision electronics. Keep a separation from your phone, device, and navigation systems.

Immense force

Before starting, read the rules. Uncontrolled attraction can break the magnet or hurt your hand. Be predictive.

Machining danger

Powder produced during machining of magnets is combustible. Do not drill into magnets without proper cooling and knowledge.

Allergy Warning

Some people have a sensitization to Ni, which is the common plating for NdFeB magnets. Frequent touching might lead to an allergic reaction. It is best to use protective gloves.

Do not give to children

Adult use only. Small elements pose a choking risk, causing intestinal necrosis. Store out of reach of kids and pets.

Threat to electronics

Equipment safety: Neodymium magnets can ruin data carriers and delicate electronics (heart implants, hearing aids, timepieces).

Heat sensitivity

Avoid heat. NdFeB magnets are susceptible to temperature. If you need operation above 80°C, inquire about HT versions (H, SH, UH).

Physical harm

Protect your hands. Two large magnets will snap together immediately with a force of massive weight, destroying everything in their path. Be careful!

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