free-machining

[ free-muh-shee-ning ]
/ ˈfri məˈʃi nɪŋ /

adjective

(of certain metals) readily machinable at high speeds with low force.
noting a class of steels having certain additives, as sulfur or lead, to make them readily machinable.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019