EFFECT OF 1200 F SODIUM ON AUSTENITIC AND FERRITIC STEELS. PHYSICAL PROPERTIES OF MATERIALS. Progress Report No. 34, June 1963

Technical Report · Mon Jun 24 04:00:00 EDT 1963

DOI:https://doi.org/10.2172/4690812· OSTI ID:4690812

Tests 1 and 2, which consisted of the determination of the physical properties of Type 316 ss and 2 1/4 Cr-1 Mo steel specimens in low oxide sodium, helium, and air at 1200 and 1100 deg F respectively, were completed except for several tests in helium. Photomicrographs and discussion of stainless steel fatigue and creep-to-rupture specimens indicate that while massive oxidation products on stainless steel fatigue specimens are not apparent, as in the case of the Cr-Mo specimens, surface attack is thought to reduce fatigue life. Evidence is shown that carburization is greater in short time stressed specimens than in 4000 hour exposed unstressed specimens. Test 3, the determination of the physical properties of stainless steel in 1200 deg F sodium saturated with carbon is in its shakedown stage. Test 4, the measurement of the physical properties of 2 1/4 Cr-1 Mo steel specimens in sodium containing 200 to 300 ppm sodium oxide, is in progress with several of the short time creep-to-rupture tests completed. Very preliminary evaluation of the test to date indicates a lower creep-to- rupture strength and a lower creep rate in this environment compared to sodium with low oxide. (auth)

• Research Organization: MSA Research Corp., Callery, Penna.
• NSA Number: NSA-17-032571
• OSTI ID: 4690812
• Report Number(s): MSAR-63-105
• Country of Publication: United States
• Language: English

Related Subjects

AIR
CARBIDES
CARBON
CARBON STEELS
CHROMIUM ALLOYS
CREEP
FAILURES
FATIGUE
HELIUM
HIGH TEMPERATURE
MECHANICAL PROPERTIES
METALLOGRAPHY
METALS, CERAMICS, AND OTHER MATERIALS
MOLYBDENUM ALLOYS
OXIDATION
REPORT
SODIUM
SODIUM OXIDES
STAINLESS STEELS
STRESSES
TENSILE PROPERTIES