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BM 320x180x70 [4x M8] - magnetic beam
magnetic beam
Catalog no 090217
GTIN/EAN: 5906301812524
length
320 mm [±1 mm]
Width
180 mm [±1 mm]
Height
70 mm [±1 mm]
Weight
20550 g
3635.14 ZŁ with VAT / pcs + price for transport
2955.40 ZŁ net + 23% VAT / pcs
bulk discounts:
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Strength as well as structure of a neodymium magnet can be reviewed using our
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Product card - BM 320x180x70 [4x M8] - magnetic beam
Specification / characteristics - BM 320x180x70 [4x M8] - magnetic beam
| properties | values |
|---|---|
| Cat. no. | 090217 |
| GTIN/EAN | 5906301812524 |
| Production/Distribution | Dhit sp. z o.o. |
| Country of origin | Poland / China / Germany |
| Customs code | 85059029 |
| length | 320 mm [±1 mm] |
| Width | 180 mm [±1 mm] |
| Height | 70 mm [±1 mm] |
| Weight | 20550 g |
| Manufacturing Tolerance | ±1 mm |
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% |
Ecology and recycling (GPSR)
| recyclability (EoL) | 100% |
| recycled raw materials | ~10% (pre-cons) |
| carbon footprint | low / zredukowany |
| waste code (EWC) | 16 02 16 |
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Pros and cons of neodymium magnets.
Advantages
- They have constant strength, and over more than 10 years their performance decreases symbolically – ~1% (in testing),
- They retain their magnetic properties even under strong external field,
- A magnet with a metallic nickel surface is more attractive,
- 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 function (depending on the shape) even at a temperature of 230°C or more...
- Thanks to modularity in shaping and the ability to customize to unusual requirements,
- Fundamental importance in electronics industry – they find application in magnetic memories, motor assemblies, medical devices, and complex engineering applications.
- Compactness – despite small sizes they provide effective action, making them ideal for precision applications
Weaknesses
- 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 increases their durability
- NdFeB magnets demagnetize when exposed to high temperatures. After reaching 80°C, many of them experience permanent weakening of strength (a factor is the shape and dimensions of the magnet). We offer magnets specially adapted to work at temperatures up to 230°C marked [AH], which are extremely resistant to heat
- Magnets exposed to a humid environment can rust. Therefore when using outdoors, we suggest using water-impermeable magnets made of rubber, plastic or other material protecting against moisture
- Due to limitations in producing threads and complex shapes in magnets, we propose using casing - magnetic mount.
- Potential hazard related to microscopic parts of magnets are risky, if swallowed, which gains importance in the context of child health protection. Additionally, small elements of these devices can disrupt the diagnostic process medical when they are in the body.
- Due to complex production process, their price is higher than average,
Holding force characteristics
Maximum lifting force for a neodymium magnet – what it depends on?
- with the contact of a yoke made of special test steel, guaranteeing maximum field concentration
- possessing a massiveness of at least 10 mm to avoid saturation
- characterized by smoothness
- under conditions of ideal adhesion (surface-to-surface)
- under perpendicular application of breakaway force (90-degree angle)
- at room temperature
Determinants of practical lifting force of a magnet
- Gap (between the magnet and the plate), as even a microscopic distance (e.g. 0.5 mm) leads to a drastic drop in lifting capacity by up to 50% (this also applies to varnish, corrosion or debris).
- Load vector – highest force is obtained only during perpendicular pulling. The shear force of the magnet along the surface is usually several times smaller (approx. 1/5 of the lifting capacity).
- Substrate thickness – to utilize 100% power, the steel must be adequately massive. Thin sheet limits the lifting capacity (the magnet "punches through" it).
- Chemical composition of the base – mild steel gives the best results. Higher carbon content reduce magnetic permeability and holding force.
- Base smoothness – the more even the surface, the larger the contact zone and stronger the hold. Unevenness creates an air distance.
- Temperature influence – high temperature reduces pulling force. Exceeding the limit temperature can permanently demagnetize the magnet.
Lifting capacity was measured using a polished steel plate of suitable thickness (min. 20 mm), under perpendicular pulling force, however under shearing force the load capacity is reduced by as much as 75%. Additionally, even a minimal clearance between the magnet and the plate decreases the holding force.
H&S for magnets
Material brittleness
Watch out for shards. Magnets can explode upon uncontrolled impact, ejecting shards into the air. Eye protection is mandatory.
Electronic hazard
Device Safety: Neodymium magnets can damage payment cards and sensitive devices (pacemakers, hearing aids, timepieces).
Warning for heart patients
Warning for patients: Powerful magnets disrupt medical devices. Keep at least 30 cm distance or ask another person to work with the magnets.
Respect the power
Exercise caution. Neodymium magnets attract from a long distance and snap with huge force, often quicker than you can move away.
Dust is flammable
Drilling and cutting of NdFeB material carries a risk of fire hazard. Magnetic powder oxidizes rapidly with oxygen and is difficult to extinguish.
Bodily injuries
Big blocks can smash fingers instantly. Do not place your hand betwixt two strong magnets.
Threat to navigation
Note: neodymium magnets produce a field that confuses sensitive sensors. Maintain a separation from your mobile, device, and GPS.
Product not for children
Strictly store magnets away from children. Ingestion danger is high, and the consequences of magnets connecting inside the body are fatal.
Do not overheat magnets
Watch the temperature. Heating the magnet above 80 degrees Celsius will permanently weaken its magnetic structure and strength.
Allergy Warning
A percentage of the population experience a hypersensitivity to Ni, which is the typical protective layer for neodymium magnets. Frequent touching might lead to an allergic reaction. We recommend wear protective gloves.
Tabela kosztu i czasu dostawy
Płatność przed wysyłką:
GLS kurier
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14.99 ZŁ
InPost Paczkomaty 24/7
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12.30 ZŁ
Płatność przy odbiorze (pobranie):
GLS kurier
Przesyłka będzie u Ciebie za 1-2 dni
23.00 ZŁ
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