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:
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Technical data of the product - 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 |
Chemical composition
| 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 |
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Advantages as well as disadvantages of rare earth magnets.
Benefits
- They retain full power for almost ten years – the drop is just ~1% (in theory),
- They are extremely resistant to demagnetization induced by external disturbances,
- By covering with a smooth layer of nickel, the element gains an aesthetic look,
- Magnetic induction on the surface of the magnet is exceptional,
- Through (appropriate) combination of ingredients, they can achieve high thermal strength, allowing for functioning at temperatures approaching 230°C and above...
- Considering the potential of free molding and adaptation to custom projects, NdFeB magnets can be created in a wide range of shapes and sizes, which amplifies use scope,
- Huge importance in modern industrial fields – they are utilized in mass storage devices, drive modules, advanced medical instruments, and modern systems.
- Thanks to concentrated force, small magnets offer high operating force, occupying minimum space,
Cons
- At strong impacts they can crack, therefore we recommend placing them in strong housings. A metal housing provides additional protection against damage, as well as increases the magnet's durability.
- When exposed to high temperature, neodymium magnets suffer a drop in strength. Often, when the temperature exceeds 80°C, their power 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 suggest using waterproof magnets made of rubber, plastic or other material stable to moisture, when using outdoors
- Due to limitations in producing nuts and complicated forms in magnets, we propose using cover - magnetic mechanism.
- Possible danger to health – tiny shards of magnets are risky, when accidentally swallowed, which is particularly important in the context of child health protection. Additionally, tiny parts of these products are able to be problematic in diagnostics medical when they are in the body.
- High unit price – neodymium magnets have a higher price than other types of magnets (e.g. ferrite), which can limit application in large quantities
Pull force analysis
Highest magnetic holding force – what contributes to it?
- on a block made of mild steel, perfectly concentrating the magnetic flux
- possessing a thickness of minimum 10 mm to ensure full flux closure
- with an ground touching surface
- without the slightest insulating layer between the magnet and steel
- under axial force direction (90-degree angle)
- at standard ambient temperature
Magnet lifting force in use – key factors
- Clearance – the presence of any layer (rust, tape, gap) acts as an insulator, which reduces capacity steeply (even by 50% at 0.5 mm).
- Direction of force – highest force is reached only during perpendicular pulling. The shear force of the magnet along the surface is typically many times smaller (approx. 1/5 of the lifting capacity).
- Base massiveness – insufficiently thick plate does not close the flux, causing part of the flux to be wasted to the other side.
- Metal type – different alloys reacts the same. Alloy additives weaken the attraction effect.
- Plate texture – ground elements guarantee perfect abutment, which improves force. Uneven metal reduce efficiency.
- Thermal environment – heating the magnet results in weakening of force. Check the maximum operating temperature for a given model.
Lifting capacity testing was carried out on a smooth plate of optimal thickness, under perpendicular forces, in contrast under attempts to slide the magnet the lifting capacity is smaller. Additionally, even a minimal clearance between the magnet’s surface and the plate reduces the lifting capacity.
Safe handling of NdFeB magnets
Serious injuries
Watch your fingers. Two large magnets will join instantly with a force of massive weight, destroying anything in their path. Be careful!
Phone sensors
Navigation devices and mobile phones are extremely sensitive to magnetism. Direct contact with a strong magnet can permanently damage the sensors in your phone.
Do not overheat magnets
Watch the temperature. Exposing the magnet to high heat will destroy its properties and pulling force.
Medical interference
Life threat: Neodymium magnets can turn off pacemakers and defibrillators. Stay away if you have medical devices.
Material brittleness
Despite the nickel coating, neodymium is brittle and cannot withstand shocks. Do not hit, as the magnet may shatter into hazardous fragments.
Safe operation
Before use, check safety instructions. Sudden snapping can destroy the magnet or hurt your hand. Be predictive.
Machining danger
Drilling and cutting of neodymium magnets carries a risk of fire hazard. Magnetic powder reacts violently with oxygen and is difficult to extinguish.
Skin irritation risks
Studies show that the nickel plating (the usual finish) is a strong allergen. If you have an allergy, avoid direct skin contact or choose versions in plastic housing.
Safe distance
Avoid bringing magnets close to a wallet, computer, or TV. The magnetic field can destroy these devices and wipe information from cards.
No play value
Only for adults. Tiny parts pose a choking risk, leading to intestinal necrosis. Store out of reach of children and animals.
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
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