Evolution of a Commercial 400 Ksi Grade Maraging Steel
Abstract
In the relatively short span of about 10 years maraging steels were conceived and developed into highly respected engineering alloys. This type of steel has not reached its full strength potential and this presentation details the evolution of the latest production maraging steel; a 400 Ksi yield grade. This steel is a member of a new compositional group which has demonstrated yield strength capability in excess of 500 Ksi in the laboratory. The 400 Ksi yield grade was chosen as the first steel of this group for production development. The composition and phases present in this ultra high strength steel are discussed. Mechanical properties and structures of wrought bar made from 15 pound laboratory vacuum induction melts are compared with those of bar stock made from a 16-inch vacuum arc remelted ingot weighing more than 2000 pounds. The influence of thermal treatments upon properties and structure is discussed in relation to the fabrication of finished parts made from the production melted 400 Ksi yield maraging steel.
Document Details
- Document Type
- Technical Report
- Publication Date
- Oct 15, 1968
- Accession Number
- ADA382714
Entities
People
- T. W. Cowan
- W. J. Boesch
Organizations
- Special Metals Corporation