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DIN 17568-1970 Nickel-Iron Wire is the German standard for products manufactured from the material known as Nickel-Iron. Nickel-Iron (also known as permalloy) is composed of an alloy of nickel and iron and its main uses are electromagnetic applications such as torroidal cores and shields, transformers, radio and radar antennas, and solenoids.
The standard describes two types of wire: Class A and Class B. The two classes distinguish different levels of electrical characteristics, such as resistivity, magnetic loss, and permeability. This ensures that Class A wire is suitable for different applications than Class B wire.
Class A wire from DIN 17568-1970 has an average resistivity of approximately 2.45μohm/m, an average magnetic loss at 1MHz of 2 to 8 watts/kg, and an average permeability of 25. It is available in round, annealed and bright drawn wire in diameters ranging from 0.4mm to 19mm, with other specialty dimensions also available.
Class B wire from DIN 17568-1970 has an average resistivity of approximately 0.5 to 10 μohm/m, an average magnetic loss at 1MHz of 2 to 8 watts/kg, and an average permeability of 25. It is available in round, annealed and bright drawn wire in diameters ranging from 0.3mm to 19mm, with other specialty dimensions also available.
The standard also states that both Classes A and B wire must comply with RoHS and WEEE, two of the most important directives for electronics components. The material is not hazardous, can be handled in bulk, and should be stored in a dry place. If a more resistant material is needed, nickel-iron alloys with higher porosity, permeability and other characteristics can also be specified.
Nickel-iron wire is made to meet the specific requirements set out in DIN 17568-1970, making it a safe, reliable and economical choice for many applications. Its ability to be made into different shapes and sizes, as well as its range of electrical characteristics, makes it a very versatile product.
