any of various steels containing manganese, especially one that has up to 14 percent manganese, used in work involving heavy strains and impacts.
Origin of manganese steel
First recorded in 1890–95
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
any very hard steel containing manganese (11–14 per cent), used in dredger buckets, rock-crushers, railway points, etc
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012