The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.



the general name of a group of refractory iron-base alloys that contain 17 to 30 percent Cr and 4.5 to 6.0 percent Al. Chromals have an uncommon combination of high heat resistance (up to 1400°C) and high electrical resistivity (1.3 to 1.5 uohm-m). The melting point varies from 1500° to 1510°C, and the density, from 7.15 to 7.30 g/cm3.

Chromals, like nichromes, are common materials in technology used in the form of wires and strips in the production of the heating elements of high-temperature electric furnaces. Although less expensive and more heat-resistant than the nichromes, they are more difficult to produce and require special service conditions because of the low strength at temperatures above 1000°C, embrittlement while in service, and the ability to interact chemically with the vapors and oxides of certain metals that are widely used in practice. Chromals exhibit good resistance to heat in air, hydrogen, and an oxidizing atmosphere containing sulfur and carbon.

In the USSR, 0Kh23Iu5A, 0Kh27Iu5A, and other types of chromals are produced. The best known chromals manufactured abroad are the alloys Kanthal and Megapyr.


Pretsizionnye splavy: Spravochnik. Moscow, 1974.
The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.
References in periodicals archive ?
Chromal focus of acquired chromatic discrimination loss and solvent exposure among printshop workers.
The position and number of methyl group on the chromal ring differ in these isomers.
In Indianist discourse, quotes such as this are not mere casual characterizations, but rather manuals of sexuality, marketing the desireability of accultured Hispanic manners rather than African, "lightly bronzed" skin rather than darker brown, and "silky, straight hair" rather than the compacted curls of African origin that many Dominicans still call "pelo malo." The chromal and cultural scale of the desireable is completed by descriptions of Enriquillo's eventual bride Mencia, a suitably acculturated blond mestiza whom Sommer rightly calls "the nation's mother," the feminine archetype of Indianist discourse (Foundational Fictions 252).
For example 4000 Rich Gold has a BRC Content of 1.5%, Stapa UV Chromal X/H (3.3%), MetalStar Pantone 07-2871 Gold (17.2%) and MetalStar Pantone 07-2877 Silver (45.2%).