
(from the article `iron`) ...from hard and brittle cast irons containing up to 4 percent carbon to more malleable low-carbon steels containing less than 0.1 percent carbon. ... ...1,394° C (2,541° F) up to its melting point of 1,538° C (2,800° F). Referred to as ferrite, iron in its bcc formation is also called alpha iro...
Found on
http://www.britannica.com/eb/a-z/d/28

[
n] - an allotrope of iron that is stable between 1403 degrees centigrade and the melting point (= 1532 degrees)
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http://www.webdictionary.co.uk/definition.php?query=delta%20iron

The body-centered cubic phase which results when austenite is no longer the most stable form of iron. Exists between 2802 and 2552 degrees F, has BCC lattice structure and is magnetic.
Found on
https://metallurgyfordummies.com/metallurgy-glossary.html

Allotropic modification of iron, stable above 2552 (degrees) F. to melting point. It is of body-centered cubic crystal structure.
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https://steelforge.com/literature/steelog-the-5000-word-metals-glossary/

An allotropic (polymorphic) form of iron stable above 1400°C and crystallizing in the body centred cubic lattice. See also: Body Centred Cubic, Iron.
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https://www.encyclo.co.uk/local/20687
noun an allotrope of iron that is stable between 1403 degrees centigrade and the melting point (= 1532 degrees)
Found on
https://www.encyclo.co.uk/local/20974

an allotrope of iron, stable above 1400°C, having a body-centered cubic lattice structure.
Found on
https://www.infoplease.com/dictionary/delta-iron

Allotropic modification of iron, stable above 2552
Found on
https://www.unifiedalloys.com/resources/glossary/
No exact match found.