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AlNiCo rod magnets


Precision-cast AINiCo rods are oriented and magnetized parallel to the length. Crystal orientation during heat-treatment improves the magnetic properties in this direction. Magnetisation can only occur in the predetermined preference direction.

AINiCo is a hard material, workable only by grinding. We grind the surface of both ends of our round rod magnets. The optimum ratio of length to diameter (L : D) is > 4 : 1. Shorter magnet dimensions are not very stable in open circuits. Most of our magnet rods have optimum dimensions.

PRODUCT DESCRIPTION

AlNiCo magnets have a high remanence, but a fairly low coercivity. This means the AlNiCo magnetic material has a high flux density which, however, is only hardly present in the magnet and can easily be weakened by demagnetising influences. For this reasons AINiCo rod magnets should not be stored or used with equal poles opposing each other (repelling).

In temperatures ranging from - 270 °C up to + 400 °C AINiCo is very stable. Its temperature coefficient is as low as - 0.02% per degree C.

A high nickel content of the alloy results in good stability against most acids and against oxidation.

Most AlNiCo magnets are used for operating magnetic switches (reed switches). The magnet lengths should correspond to the length of the glass housing of the reed switch, with parallel arrangement of switch and magnet.

All standard magnets are supplied magnetised parallel to the length.

The following standard magnets are generally available at short notice from stock. Circular rod magnets with other dimensions in the diameter range from 3 to 20 mm are available for large series production. All dimensions in mm.
L = direction of magnetisation

AlNiCo 500 corresponds to AlNiCo 35/5 according to DIN 17410 or ICE 404-8-1. We can also supply other AlNiCo alloys for large series production.

Circular AlNiCo 500 rods precision casting
TypeD ØxL (a) 
A3153x15 
A4204x20 
A5205x20 
A6256x25 
A8328x32 
A104510x45 
A156015x60 
A201220x120 
Design: Smooth precision cast, with ground end faces
Rectangular rods made of AlNiCo 500 Sand or metal moulded
TypeAxBxL 
V484,8x4,8x25,4 
V636,3x6,3x32,0 
V10510,0x5,0x20,0 
V15515,0x5,0x60,0 
Design: Rough cast, end faces ground
Magnetic values Energy
product
(BxH)max
Remanence

Br
Coercivity
(T=20°C)
Relative
remanent
permeability
Temperature
coefficient
of remanence
pro °C
Maximum
operating
temperature
Density Curie
tempe-
rature
      BHC JHC          
  kJ

m3
MGOe mT G kA

m
Oe kA

m
Oe mT

kA/m
  °C g

cm3
°C
AINiCo
Precision
casting
354,4112011200475904860323,80- 0,02%450°7,4860°
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  
 17  A315   0.90  0.80  0.70  0.49  0.43  0.38    Add to shopping cart   
 17  A420   0.95  0.85  0.75  0.60  0.49  0.43    Add to shopping cart   
 17  A520   1.05  0.92  0.82  0.66  0.54  0.49    Add to shopping cart   
 17  A625   1.25  1.10  0.97  0.89  0.79  0.77    Add to shopping cart   
 17  A832   1.80  1.65  1.50  1.45  1.35  1.25    Add to shopping cart   
 17  A1045   3.45  3.25  2.90  2.60  2.45  2.30    Add to shopping cart   
 17  A1560   8.60  8.05  7.40  6.85  6.35  6.10    Add to shopping cart   
 17  A2012   40.90  31.70  28.60  A  A  A    Add to shopping cart   
 17  V48   1.80  1.70  1.60  1.50  1.40  A    Add to shopping cart   
 17  V63   2.35  2.15  2.00  1.70  A  A    Add to shopping cart   
 17  V105   2.30  2.10  1.80  1.40  1.35  1.05    Add to shopping cart   
 17  V155   4.85  4.60  3.80  3.50  3.20  2.95    Add to shopping cart   
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.