HOW AND WHEN DID HIGH MANGANESE STEEL COME INTO BEING?
It was discovered by Robert A. Hadfield in Sheffield, England in 1882, and was first produced in the U.S. in 1892. • WHY IS IT WIDELY USED? It has very high strength, ductility, toughness, and excellent wear resistance in the most punishing applications. • IN WHAT FORMS IS IT AVAILABLE TODAY? It is available under the trade name Manganal as plates, hot-rolled bars and special shapes. • WHY IS MANGANAL DIFFERENT FROM CASE-HARDENED STEELS? With carburized or case-hardened steel, the depth of hardness is fixed. When Manganal is subjected to wear the hard surface continuously renews itself. • HOW HARD CAN THE SURFACE GET BY WORK-HARDENING? Depending on deformation of the surface crystalline structure, it can work-harden up to more than 500 Brinell. When originally put into service it is about 200 Brinell. • ARE ITS WORK-HARDENING ABILITY, TOUGHNESS, AND DUCTILITY THE ONLY ADVANTAGES OF MANGANAL? No. It has a low coefficient of friction which is very important to wear resistance. This is pa
