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):

Report Date:

1964-03-01

Pagination or Media Count:

97.0

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

Subject Categories:

Distribution Statement:

APPROVED FOR PUBLIC RELEASE