UMT 11x17 colorless / N38 - board holder
board holder
Catalog no 230266
GTIN/EAN: 5906301814290
Diameter Ø
11 mm [±1 mm]
Height
17 mm [±1 mm]
Weight
3 g
Coating
[NiCuNi] Nickel
1.538 ZŁ with VAT / pcs + price for transport
1.250 ZŁ net + 23% VAT / pcs
bulk discounts:
Need more?
Call us now
+48 888 99 98 98
if you prefer send us a note via
our online form
the contact form page.
Parameters as well as appearance of magnets can be tested on our
our magnetic calculator.
Same-day processing for orders placed before 14:00.
Technical data - UMT 11x17 colorless / N38 - board holder
Specification / characteristics - UMT 11x17 colorless / N38 - board holder
| properties | values |
|---|---|
| Cat. no. | 230266 |
| GTIN/EAN | 5906301814290 |
| Production/Distribution | Dhit sp. z o.o. |
| Country of origin | Poland / China / Germany |
| Customs code | 85059029 |
| Diameter Ø | 11 mm [±1 mm] |
| Height | 17 mm [±1 mm] |
| Weight | 3 g |
| Coating | [NiCuNi] Nickel |
| Manufacturing Tolerance | ±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 |
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 |
See more proposals
![UMH 16x5x32 [M4] / N38 - magnetic holder with hook](https://cdn3.dhit.pl/graphics/products/umh-16x5x32-m4-lak.jpg "UMH 16x5x32 [M4] / N38 - magnetic holder with hook")
Strengths and weaknesses of neodymium magnets.
Strengths
- Their power is maintained, and after approximately 10 years it decreases only by ~1% (according to research),
- They retain their magnetic properties even under external field action,
- A magnet with a metallic silver surface has better aesthetics,
- Neodymium magnets generate maximum magnetic induction on a small surface, which allows for strong attraction,
- Neodymium magnets are characterized by very high magnetic induction on the magnet surface and can function (depending on the form) even at a temperature of 230°C or more...
- Due to the ability of precise forming and customization to custom solutions, neodymium magnets can be manufactured in a variety of shapes and sizes, which makes them more universal,
- Wide application in innovative solutions – they are commonly used in mass storage devices, electric drive systems, diagnostic systems, and multitasking production systems.
- Relatively small size with high pulling force – neodymium magnets offer high power in compact dimensions, which makes them useful in small systems
Disadvantages
- To avoid cracks upon strong impacts, we suggest using special steel housings. Such a solution secures the magnet and simultaneously increases its durability.
- We warn that neodymium magnets can reduce their strength at high temperatures. To prevent this, we advise our specialized [AH] magnets, which work effectively even at 230°C.
- Magnets exposed to a humid environment can corrode. Therefore when using outdoors, we suggest using water-impermeable magnets made of rubber, plastic or other material resistant to moisture
- Limited possibility of creating nuts in the magnet and complicated shapes - preferred is casing - mounting mechanism.
- Possible danger resulting from small fragments of magnets pose a threat, in case of ingestion, which gains importance in the context of child health protection. It is also worth noting that tiny parts of these magnets can complicate diagnosis medical when they are in the body.
- With budget limitations the cost of neodymium magnets is economically unviable,
Pull force analysis
Maximum lifting force for a neodymium magnet – what contributes to it?
- using a sheet made of high-permeability steel, serving as a magnetic yoke
- whose thickness reaches at least 10 mm
- with an ground touching surface
- with total lack of distance (no paint)
- during detachment in a direction perpendicular to the plane
- at temperature approx. 20 degrees Celsius
Practical aspects of lifting capacity – factors
- Gap between magnet and steel – every millimeter of separation (caused e.g. by varnish or unevenness) diminishes the magnet efficiency, often by half at just 0.5 mm.
- Angle of force application – maximum parameter is available only during pulling at a 90° angle. The resistance to sliding of the magnet along the plate is standardly many times lower (approx. 1/5 of the lifting capacity).
- Plate thickness – insufficiently thick plate does not accept the full field, causing part of the power to be wasted to the other side.
- Plate material – low-carbon steel gives the best results. Alloy admixtures lower magnetic properties and holding force.
- Base smoothness – the smoother and more polished the surface, the larger the contact zone and higher the lifting capacity. Unevenness acts like micro-gaps.
- Operating temperature – neodymium magnets have a sensitivity to temperature. At higher temperatures they lose power, and at low temperatures they can be stronger (up to a certain limit).
Lifting capacity testing was conducted on plates with a smooth surface of optimal thickness, under a perpendicular pulling force, whereas under shearing force the load capacity is reduced by as much as 5 times. Moreover, even a minimal clearance between the magnet’s surface and the plate decreases the holding force.
H&S for magnets
Respect the power
Before use, read the rules. Sudden snapping can destroy the magnet or injure your hand. Be predictive.
Eye protection
Despite the nickel coating, neodymium is delicate and cannot withstand shocks. Avoid impacts, as the magnet may shatter into hazardous fragments.
Heat sensitivity
Monitor thermal conditions. Exposing the magnet to high heat will permanently weaken its magnetic structure and pulling force.
Warning for allergy sufferers
Studies show that nickel (the usual finish) is a potent allergen. For allergy sufferers, avoid touching magnets with bare hands and choose versions in plastic housing.
Dust explosion hazard
Fire warning: Rare earth powder is explosive. Avoid machining magnets in home conditions as this may cause fire.
Serious injuries
Watch your fingers. Two powerful magnets will join immediately with a force of massive weight, crushing anything in their path. Exercise extreme caution!
Protect data
Do not bring magnets near a wallet, computer, or TV. The magnetic field can irreversibly ruin these devices and wipe information from cards.
Danger to the youngest
Adult use only. Tiny parts pose a choking risk, leading to severe trauma. Keep away from kids and pets.
Magnetic interference
A powerful magnetic field negatively affects the operation of compasses in smartphones and GPS navigation. Keep magnets close to a device to prevent damaging the sensors.
Warning for heart patients
People with a pacemaker should keep an large gap from magnets. The magnetic field can interfere with the operation of the life-saving device.
Tabela kosztu i czasu dostawy
Płatność przed wysyłką:
GLS kurier
Przesyłka będzie u Ciebie za 2-3 dni
14.99 ZŁ
InPost Paczkomaty 24/7
Przesyłka będzie u Ciebie za 1-2 dni
12.30 ZŁ
Płatność przy odbiorze (pobranie):
GLS kurier
Przesyłka będzie u Ciebie za 1-2 dni
23.00 ZŁ
Rate the product
Your rating