- an allotrope of iron, stable between 768°C and 910°C, similar to alpha iron but nonmagnetic.
Origin of beta iron
First recorded in 1890–95
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
- a nonmagnetic allotrope of pure iron stable between 770°C and 910°C
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