MW 12x1 / N38 - cylindrical magnet
cylindrical magnet
Catalog no 010015
GTIN/EAN: 5906301810148
Diameter Ø
12 mm [±0,1 mm]
Height
1 mm [±0,1 mm]
Weight
0.85 g
Magnetization Direction
↑ axial
Load capacity
0.42 kg / 4.15 N
Magnetic Induction
101.90 mT / 1019 Gs
Coating
[NiCuNi] Nickel
0.578 ZŁ with VAT / pcs + price for transport
0.470 ZŁ net + 23% VAT / pcs
bulk discounts:
Need more?
Call us
+48 22 499 98 98
or contact us using
inquiry form
the contact form page.
Lifting power as well as structure of magnets can be calculated using our
power calculator.
Orders submitted before 14:00 will be dispatched today!
Technical - MW 12x1 / N38 - cylindrical magnet
Specification / characteristics - MW 12x1 / N38 - cylindrical magnet
| properties | values |
|---|---|
| Cat. no. | 010015 |
| GTIN/EAN | 5906301810148 |
| Production/Distribution | Dhit sp. z o.o. |
| Country of origin | Poland / China / Germany |
| Customs code | 85059029 |
| Diameter Ø | 12 mm [±0,1 mm] |
| Height | 1 mm [±0,1 mm] |
| Weight | 0.85 g |
| Magnetization Direction | ↑ axial |
| Load capacity ~ ? | 0.42 kg / 4.15 N |
| Magnetic Induction ~ ? | 101.90 mT / 1019 Gs |
| Coating | [NiCuNi] Nickel |
| Manufacturing Tolerance | ±0.1 mm |
Magnetic properties of material N38
| 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 - data
The following values represent the outcome of a physical calculation. Values were calculated on algorithms for the class Nd2Fe14B. Operational conditions might slightly differ. Treat these data as a preliminary roadmap during assembly planning.
Table 1: Static pull force (pull vs distance) - interaction chart
MW 12x1 / N38
| Distance (mm) | Induction (Gauss) / mT | Pull Force (kg/lbs/g/N) | Risk Status |
|---|---|---|---|
| 0 mm |
1019 Gs
101.9 mT
|
0.42 kg / 0.93 pounds
420.0 g / 4.1 N
|
safe |
| 1 mm |
941 Gs
94.1 mT
|
0.36 kg / 0.79 pounds
358.5 g / 3.5 N
|
safe |
| 2 mm |
812 Gs
81.2 mT
|
0.27 kg / 0.59 pounds
266.8 g / 2.6 N
|
safe |
| 3 mm |
666 Gs
66.6 mT
|
0.18 kg / 0.40 pounds
179.7 g / 1.8 N
|
safe |
| 5 mm |
415 Gs
41.5 mT
|
0.07 kg / 0.15 pounds
69.7 g / 0.7 N
|
safe |
| 10 mm |
126 Gs
12.6 mT
|
0.01 kg / 0.01 pounds
6.5 g / 0.1 N
|
safe |
| 15 mm |
49 Gs
4.9 mT
|
0.00 kg / 0.00 pounds
1.0 g / 0.0 N
|
safe |
| 20 mm |
23 Gs
2.3 mT
|
0.00 kg / 0.00 pounds
0.2 g / 0.0 N
|
safe |
| 30 mm |
7 Gs
0.7 mT
|
0.00 kg / 0.00 pounds
0.0 g / 0.0 N
|
safe |
| 50 mm |
2 Gs
0.2 mT
|
0.00 kg / 0.00 pounds
0.0 g / 0.0 N
|
safe |
Table 2: Shear force (wall)
MW 12x1 / N38
| Distance (mm) | Friction coefficient | Pull Force (kg/lbs/g/N) |
|---|---|---|
| 0 mm | Stal (~0.2) |
0.08 kg / 0.19 pounds
84.0 g / 0.8 N
|
| 1 mm | Stal (~0.2) |
0.07 kg / 0.16 pounds
72.0 g / 0.7 N
|
| 2 mm | Stal (~0.2) |
0.05 kg / 0.12 pounds
54.0 g / 0.5 N
|
| 3 mm | Stal (~0.2) |
0.04 kg / 0.08 pounds
36.0 g / 0.4 N
|
| 5 mm | Stal (~0.2) |
0.01 kg / 0.03 pounds
14.0 g / 0.1 N
|
| 10 mm | Stal (~0.2) |
0.00 kg / 0.00 pounds
2.0 g / 0.0 N
|
| 15 mm | Stal (~0.2) |
0.00 kg / 0.00 pounds
0.0 g / 0.0 N
|
| 20 mm | Stal (~0.2) |
0.00 kg / 0.00 pounds
0.0 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
|
Table 3: Wall mounting (sliding) - vertical pull
MW 12x1 / N38
| Surface type | Friction coefficient / % Mocy | Max load (kg/lbs/g/N) |
|---|---|---|
| Raw steel |
µ = 0.3
30% Nominalnej Siły
|
0.13 kg / 0.28 pounds
126.0 g / 1.2 N
|
| Painted steel (standard) |
µ = 0.2
20% Nominalnej Siły
|
0.08 kg / 0.19 pounds
84.0 g / 0.8 N
|
| Oily/slippery steel |
µ = 0.1
10% Nominalnej Siły
|
0.04 kg / 0.09 pounds
42.0 g / 0.4 N
|
| Magnet with anti-slip rubber |
µ = 0.5
50% Nominalnej Siły
|
0.21 kg / 0.46 pounds
210.0 g / 2.1 N
|
Table 4: Material efficiency (substrate influence) - sheet metal selection
MW 12x1 / N38
| Steel thickness (mm) | % power | Real pull force (kg/lbs/g/N) |
|---|---|---|
| 0.5 mm |
|
0.04 kg / 0.09 pounds
42.0 g / 0.4 N
|
| 1 mm |
|
0.11 kg / 0.23 pounds
105.0 g / 1.0 N
|
| 2 mm |
|
0.21 kg / 0.46 pounds
210.0 g / 2.1 N
|
| 3 mm |
|
0.32 kg / 0.69 pounds
315.0 g / 3.1 N
|
| 5 mm |
|
0.42 kg / 0.93 pounds
420.0 g / 4.1 N
|
| 10 mm |
|
0.42 kg / 0.93 pounds
420.0 g / 4.1 N
|
| 11 mm |
|
0.42 kg / 0.93 pounds
420.0 g / 4.1 N
|
| 12 mm |
|
0.42 kg / 0.93 pounds
420.0 g / 4.1 N
|
Table 5: Working in heat (material behavior) - resistance threshold
MW 12x1 / N38
| Ambient temp. (°C) | Power loss | Remaining pull (kg/lbs/g/N) | Status |
|---|---|---|---|
| 20 °C | 0.0% |
0.42 kg / 0.93 pounds
420.0 g / 4.1 N
|
OK |
| 40 °C | -2.2% |
0.41 kg / 0.91 pounds
410.8 g / 4.0 N
|
OK |
| 60 °C | -4.4% |
0.40 kg / 0.89 pounds
401.5 g / 3.9 N
|
|
| 80 °C | -6.6% |
0.39 kg / 0.86 pounds
392.3 g / 3.8 N
|
|
| 100 °C | -28.8% |
0.30 kg / 0.66 pounds
299.0 g / 2.9 N
|
Table 6: Two magnets (repulsion) - forces in the system
MW 12x1 / N38
| Gap (mm) | Attraction (kg/lbs) (N-S) | Lateral Force (kg/lbs/g/N) | Repulsion (kg/lbs) (N-N) |
|---|---|---|---|
| 0 mm |
0.72 kg / 1.60 pounds
1 959 Gs
|
0.11 kg / 0.24 pounds
109 g / 1.1 N
|
N/A |
| 1 mm |
0.68 kg / 1.50 pounds
1 978 Gs
|
0.10 kg / 0.23 pounds
102 g / 1.0 N
|
0.61 kg / 1.35 pounds
~0 Gs
|
| 2 mm |
0.62 kg / 1.36 pounds
1 883 Gs
|
0.09 kg / 0.20 pounds
93 g / 0.9 N
|
0.56 kg / 1.23 pounds
~0 Gs
|
| 3 mm |
0.54 kg / 1.19 pounds
1 762 Gs
|
0.08 kg / 0.18 pounds
81 g / 0.8 N
|
0.49 kg / 1.07 pounds
~0 Gs
|
| 5 mm |
0.38 kg / 0.84 pounds
1 479 Gs
|
0.06 kg / 0.13 pounds
57 g / 0.6 N
|
0.34 kg / 0.76 pounds
~0 Gs
|
| 10 mm |
0.12 kg / 0.26 pounds
830 Gs
|
0.02 kg / 0.04 pounds
18 g / 0.2 N
|
0.11 kg / 0.24 pounds
~0 Gs
|
| 20 mm |
0.01 kg / 0.02 pounds
253 Gs
|
0.00 kg / 0.00 pounds
2 g / 0.0 N
|
0.01 kg / 0.02 pounds
~0 Gs
|
| 50 mm |
0.00 kg / 0.00 pounds
25 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
15 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
10 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
7 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
5 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
3 Gs
|
0.00 kg / 0.00 pounds
0 g / 0.0 N
|
0.00 kg / 0.00 pounds
~0 Gs
|
Table 7: Protective zones (electronics) - precautionary measures
MW 12x1 / N38
| Object / Device | Limit (Gauss) / mT | Safe distance |
|---|---|---|
| Pacemaker | 5 Gs (0.5 mT) | 3.5 cm |
| Hearing aid | 10 Gs (1.0 mT) | 3.0 cm |
| Mechanical watch | 20 Gs (2.0 mT) | 2.5 cm |
| Mobile device | 40 Gs (4.0 mT) | 2.0 cm |
| Car key | 50 Gs (5.0 mT) | 1.5 cm |
| Payment card | 400 Gs (40.0 mT) | 1.0 cm |
| HDD hard drive | 600 Gs (60.0 mT) | 0.5 cm |
Table 8: Impact energy (cracking risk) - warning
MW 12x1 / N38
| Start from (mm) | Speed (km/h) | Energy (J) | Predicted outcome |
|---|---|---|---|
| 10 mm |
22.63 km/h
(6.29 m/s)
|
0.02 J | |
| 30 mm |
38.83 km/h
(10.79 m/s)
|
0.05 J | |
| 50 mm |
50.13 km/h
(13.92 m/s)
|
0.08 J | |
| 100 mm |
70.89 km/h
(19.69 m/s)
|
0.16 J |
Table 9: Surface protection spec
MW 12x1 / 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) |
Table 10: Construction data (Flux)
MW 12x1 / N38
| Parameter | Value | SI Unit / Description |
|---|---|---|
| Magnetic Flux | 1 564 Mx | 15.6 µWb |
| Pc Coefficient | 0.13 | Low (Flat) |
Table 11: Hydrostatics and buoyancy
MW 12x1 / N38
| Environment | Effective steel pull | Effect |
|---|---|---|
| Air (land) | 0.42 kg | Standard |
| Water (riverbed) |
0.48 kg
(+0.06 kg buoyancy gain)
|
+14.5% |
1. Shear force
*Warning: On a vertical surface, the magnet holds merely ~20% of its nominal pull.
2. Steel saturation
*Thin metal sheet (e.g. computer case) drastically weakens the holding force.
3. Power loss vs temp
*For N38 material, the critical limit is 80°C.
4. Demagnetization curve and operating point (B-H)
chart generated for the permeance coefficient Pc (Permeance Coefficient) = 0.13
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.
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% |
Environmental data
| recyclability (EoL) | 100% |
| recycled raw materials | ~10% (pre-cons) |
| carbon footprint | low / zredukowany |
| waste code (EWC) | 16 02 16 |
Check out more offers
Strengths and weaknesses of neodymium magnets.
Pros
- They virtually do not lose power, because even after 10 years the performance loss is only ~1% (in laboratory conditions),
- They do not lose their magnetic properties even under close interference source,
- A magnet with a smooth nickel surface has an effective appearance,
- Neodymium magnets create maximum magnetic induction on a their surface, which allows for strong attraction,
- Neodymium magnets are characterized by extremely high magnetic induction on the magnet surface and can work (depending on the shape) even at a temperature of 230°C or more...
- Due to the ability of precise shaping and customization to custom solutions, neodymium magnets can be modeled in a variety of forms and dimensions, which makes them more universal,
- Universal use in high-tech industry – they are commonly used in magnetic memories, brushless drives, advanced medical instruments, also modern systems.
- Relatively small size with high pulling force – neodymium magnets offer strong magnetic field in compact dimensions, which makes them useful in small systems
Limitations
- At very strong impacts they can break, therefore we advise placing them in strong housings. A metal housing provides additional protection against damage and increases the magnet's durability.
- When exposed to high temperature, neodymium magnets suffer a drop in power. Often, when the temperature exceeds 80°C, their strength decreases (depending on the size, as well as shape of the magnet). For those who need magnets for extreme conditions, we offer [AH] versions withstanding up to 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 immune to moisture, when using outdoors
- We recommend a housing - magnetic mount, due to difficulties in producing threads inside the magnet and complex forms.
- Potential hazard related to microscopic parts of magnets pose a threat, when accidentally swallowed, which becomes key in the context of child health protection. Furthermore, tiny parts of these devices can complicate diagnosis medical after entering the body.
- With large orders the cost of neodymium magnets can be a barrier,
Pull force analysis
Breakaway strength of the magnet in ideal conditions – what contributes to it?
- with the application of a yoke made of low-carbon steel, ensuring maximum field concentration
- whose transverse dimension is min. 10 mm
- with an ideally smooth contact surface
- without any air gap between the magnet and steel
- for force applied at a right angle (in the magnet axis)
- at standard ambient temperature
Determinants of practical lifting force of a magnet
- Distance (between the magnet and the plate), as even a tiny clearance (e.g. 0.5 mm) can cause a decrease in lifting capacity by up to 50% (this also applies to varnish, rust or debris).
- Loading method – declared lifting capacity refers to detachment vertically. When attempting to slide, the magnet holds much less (typically approx. 20-30% of maximum force).
- Element thickness – for full efficiency, the steel must be sufficiently thick. Paper-thin metal restricts the attraction force (the magnet "punches through" it).
- Steel type – mild steel gives the best results. Alloy steels reduce magnetic permeability and holding force.
- Surface condition – smooth surfaces ensure maximum contact, which improves field saturation. Rough surfaces reduce efficiency.
- Thermal factor – high temperature weakens pulling force. Too high temperature can permanently demagnetize the magnet.
Lifting capacity was determined with the use of a smooth steel plate of optimal thickness (min. 20 mm), under perpendicular detachment force, whereas under parallel forces the lifting capacity is smaller. Additionally, even a small distance between the magnet and the plate decreases the load capacity.
Warnings
Flammability
Machining of neodymium magnets poses a fire risk. Magnetic powder reacts violently with oxygen and is hard to extinguish.
Safe distance
Do not bring magnets near a purse, computer, or screen. The magnetism can permanently damage these devices and erase data from cards.
Nickel coating and allergies
Certain individuals experience a sensitization to nickel, which is the typical protective layer for NdFeB magnets. Frequent touching can result in skin redness. We suggest use safety gloves.
Serious injuries
Danger of trauma: The pulling power is so immense that it can cause hematomas, pinching, and broken bones. Protective gloves are recommended.
Magnetic interference
Navigation devices and mobile phones are extremely sensitive to magnetism. Direct contact with a strong magnet can decalibrate the internal compass in your phone.
Demagnetization risk
Standard neodymium magnets (grade N) lose magnetization when the temperature exceeds 80°C. Damage is permanent.
Magnets are brittle
Neodymium magnets are ceramic materials, meaning they are prone to chipping. Collision of two magnets will cause them cracking into small pieces.
Danger to pacemakers
Medical warning: Neodymium magnets can deactivate pacemakers and defibrillators. Do not approach if you have electronic implants.
Adults only
Absolutely store magnets away from children. Risk of swallowing is high, and the effects of magnets clamping inside the body are tragic.
Respect the power
Use magnets with awareness. Their immense force can surprise even professionals. Stay alert and respect their power.
