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If you can't find what you require in our standard range on the website, kindly use the Enquiry Form to send us your wishes for custom manufacturing. |
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Betaflex® (magnetic rubber)The flexible permanent magnet that you can work yourself. Cutting, punching, drilling and sawing with normal tools.Betaflex is a remarkable magnet material made of flexible rubber-like plastic with barium or strontium ferrite powders imbedded. During production the magnetic orientation (anisotropy) is made parallel to the thickness of the material, resulting in superior properties. /p> Betaflex can also be worked in magnetized condition with normal tools and is insensitive to demagnetising influences.
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 Application
The energy product of Betaflex is higher than that of sintered isotropic barium ferrite (Oxyd 100). Many interesting applications are therefore possible. By bending Betaflex strips into circular shapes, ring magnets with radial orientation can be produced As a result, small DC motors can be produced by inserting this shaped magnetic ring into the stator sleeve. Good and effective applications are possible in contactless position indicators with magnetic switches. Hardness: (Shore A) 90 ˜ 100
Radius for bending max.: Thickness x 8
Ageing: No change of magnetic and mechanical properties. Becomes neither hard nor brittle. All dimensions in mm.
The following standard dimensions are available from stock. |
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Chemical resistance:
- Air, ozone, water: excellent.
- Mineral oil, weak acids and bases, kerosene, glycol: no effect.
- Nitric acid: light reaction.
- Petrol, acetone, 90% alcohol: some deformation.
- Benzene, chlorinated solvents: destruction. Rings or discs magnetised parallel to the length can be punched from strips. An outstanding application can be found in magnetic rails for holding purposes. Here Betaflex strips are placed between 2 flat iron bars (sandwich system). This enables magnetic rails of any length with excellent holding force to be easily manufactured (see bottom left figure). |
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| Block magnets |  |
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| Type | D | x | B | x | L | | | Tolerances |
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| BF325 | 3 | x | 25 | x | 200 | | | Thickness ± 0.15 mm
Width ± 0.25 mm
Length ± 0.5 mm
Orientation and
magnetisation
through thickness |
| BF525 | 5 | x | 25 | x | 200 | |
| BF630 | 6 | x | 30 | x | 200 | |
| BF830 | 8 | x | 30 | x | 200 | |
| BF809 | 8 | x | 9 | x | 250 | |
| BF800 | 8 | x | 24 | x | 500 | |
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| Magnetic values | Energy
product
(BxH) max | Remanence
Br | Coercivity
(T=20°C) | Relative
remanent
permeability | Temperature
coefficent of
remanence
per °C | Temperature
for practical
use | Density | Curie
tempe-
rature |
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| BHC | JHC |
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kJ
m3 | MGOe | mT | G | kA
m | Oe | kA
m | Oe | mT
kA/m | °C | g
cm3 | °C |
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Betaflex (BaFe),
anisotropic
plastic bonded | 12 | 1,5 | 245 | 2450 | 175 | 2200 | 207 | 2600 | 1,40 | - 0,20% | - 40°
+ 85° | 3,7 | 450° |
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Order list
Prices /pc. ex works Berlin plus packing, VAT only in Germany
(A = Please ask for price) |
Catalogue
page |
Type |
1 - 19 |
20 - 49 |
50 - 99 |
100 - 199 |
200 - 499 |
500 - 1000 |
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| 18 |
BF325 |
2,55 |
2,45 |
2,30 |
1,90 |
1,75 |
A |
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| 18 |
BF525 |
4,45 |
3,95 |
3,50 |
2,50 |
2,20 |
A |
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| 18 |
BF630 |
7,00 |
6,10 |
4,35 |
3,50 |
3,00 |
A |
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| 18 |
BF830 |
8,95 |
7,90 |
6,10 |
4,50 |
4,00 |
A |
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| 18 |
BF809 |
4,80 |
4,10 |
3,45 |
2,70 |
2,50 |
A |
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| 18 |
BF800 |
19,90 |
16,30 |
13,25 |
11,75 |
9,70 |
A |
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Small orders: Payments from foreign countries result in additional bank charges, therefore we charge an additional lump sum of 15,- Euro for all foreign orders with a goods value less than 153,- Euro.
Please ask for our Conditions of sale, delivery and payment in english and our export conditions for your country. |
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Index 
Order list 
AlNiCo 500 - Magnets
Disc-type holding magnets...
