page_title: Iron–nickel alloy
hierarchical_section_title: Iron–nickel alloy
caption_attribution_description: English: Acid-etched iron meteorite slice, revealing the characteristic Widmanstatten pattern, indicative of slow cooling and crystallization within the iron-nickel cores of larger asteroids. Note the "vug" inclusion on the middle left of the slice. From the California Polytechnic State University Physics Department meteorite collection, presented at the April 2009 meeting of the Central Coast Astronomical Society. Photo by Cuesta College Physical Sciences Division instructor Dr. Patrick M. Len.
context_page_description: An iron–nickel alloy or nickel–iron alloy, abbreviated FeNi or NiFe, is a group of alloys consisting primarily of the elements nickel and iron. It is the main constituent of the "iron" planetary cores and iron meteorites. The acronym NiFe refers to various chemical reactions that involve an iron–nickel catalyst or component, or in geology, to the general composition of planetary cores.
  Some iron–nickel alloys are called nickel steel and usually contain additional elements, depending on the purpose.
context_section_description: 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 acronym NiFe refers to various chemical reactions that involve an iron–nickel catalyst or component, or in geology, to the general composition of planetary cores (including Earth's).
  Some iron–nickel alloys are called nickel steel and usually contain additional elements, depending on the purpose.
caption: Widmanstätten pattern in NiFe octahedrite meteorite
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