Accession Number : AD0434383


Title :   DEVELOPMENT OF HIGH INTEGRITY CLOSE TOLERANCE HIGH STRENGTH AIRCRAFT QUALITY STEEL CASTINGS.


Descriptive Note : Rept. for May 61 - May 63.


Corporate Author : AMERICAN BRAKE SHOE CO MAHWAH N J


Personal Author(s) : Dabney,John B ; Larson,Hugo R


Report Date : Mar 1964


Pagination or Media Count : 97


Abstract : A program to improve the mechanical properties of cast 5% chromium steel was carried out. vacuum degassing of air melted material of a composition based on that of wrought H-11 hot work die steel did not exhibit any significant benefits. A modified 5% chromium steel containing no vanadium and 2.4% molydbenum had good tensile properties and excellent toughness in cast one-inch sections. Investigation of the properties of cast 18 percent nickel maraging steel revealed that this material has high toughness and ductility in cast one-inch sections. Cast sections of maraging steel of two inches and greater exhibited a defect which seriously impaired tensile properties. Experiments to identify or eliminate the defect were unsuccessful. (Author)


Descriptors :   *CASTINGS , STEEL , TOOL STEEL , DUCTILITY , TOUGHNESS , BAINITE , MELTING , CASTING , DEGASIFICATION , SCIENTIFIC RESEARCH


Distribution Statement : APPROVED FOR PUBLIC RELEASE