Iron Nickel Alloy Powder
Nickel–iron alloys are of particular interest because a broad variety of qualitatively different magnetic properties can be obtained by adjusting the composition and the preparation process. There are no restraints to rolling so it is possible to obtain good laminations with thickness down to 10–20 μm, with great benefits for classical losses. An iron–nickel alloy or nickel–iron alloy, abbreviated FeNi or NiFe, is a group of alloys consisting primarily of the elements nickel (Ni) and iron (Fe). It is the main constituent of the "iron" planetary cores and iron meteorites. The melting point of iron-nickel alloys ranges from 1400℃ to 1450℃ and have a density of 8.25 g/cm3. Generally, iron-nickel alloy powders have 470 MPa ultimate tensile strength and their hardness can be as high as 240 Vickers. Nickel-iron alloy powder is used for cases where low thermal coefficient of expansion is required, for instance, springs of high precision, as in watches. Iron-nickel alloy powder is used in transformers, inductors, magnetic amplifiers, magnetic shields and memory storage devices due to its magnetic properties.