Collapse of experimental capsules under external pressure

Effects of oxidation on the impact energy of Hastelloy S and Hastelloy C-4 Charpy V-notch specimens heated in air at 600 to 800

“…However, the degradation in ductility and Charpy impact strength of Hastelloy Sand Hastelloy C-4 due to the thermal-aging reactions is less than occurs with most oxidation-resistant superalloys; this was the primary reason for selecting Hastelloy S for the outer capsule material and Hastelloy C-4 as the backup material. The , design of the outer capsule (Simonen, Shippel, Jr. and Atteridge 1980;Simonen and Shippel, Jr. 1980), which calls for a O.S-in. capsule wall thickness, was based on the data reported by Cabot Corp. for the thermally aged Hastelloy S (Matthews 1976).…”

Design and qualification testing of a strontium-90 fluoride heat source

“…The design analyses were based on the mechanical properties Hastelloy S would possess after extended aging at anticipated heat-source operating temperatures. Complete details of the design calculations are provided in Simonen (1980a;1980b The 9-m drop impact requirement was the primary consideration in the design of the interlocking end closure. Maximum damage results when the capsule is dropped on its corner in an orientation such that the capsule's center of gravity is in line with the impact point and the direction of travel.…”