Accession Number : AD0437809


Title :   THE EFFECT OF SHEET THICKNESS ON THE TOUGHNESS OF 18-9-5 MARAGING STEEL,


Corporate Author : ARMY MISSILE COMMAND REDSTONE ARSENAL ALA ARMY PROPULSION LAB AND CENTER


Personal Author(s) : Crownover,William S ; Wright,James W ,Jr


Report Date : 20 Mar 1964


Pagination or Media Count : 33


Abstract : A study was made to determine the effect of sheet thickness on the toughness of an 18-9-5 maraging steel. To date, a large amount of data has been generated on the toughness of this type material, particularly in thicker sections, but very little has been accumulated for a range of sheet thicknesses. The material was examined in thicknesses ranging from 0.020 to 0.120 in.. To study the toughness of this material, the notched-tosmooth tensile test was used. Notch properties were obtained at room temperature and at 60 F. For this heat of steel, there is a noticeable degrading effect on the toughness at thicknesses of 0.080 in. or greater for three different maraging conditions. Low temperatures have only a slight degrading effect on the toughness of this material over the range of thicknesses examined. (Author)


Descriptors :   *MARAGING STEELS , *SHEETS , TOUGHNESS , THICKNESS , HEAT TREATMENT , TEMPERATURE , HARDNESS , NICKEL ALLOYS , COBALT ALLOYS , MOLYBDENUM ALLOYS


Distribution Statement : APPROVED FOR PUBLIC RELEASE