SYMPOSIA PAPER Published: 01 January 1956

Creep, Rupture, and Notch Sensitivity Properties of S-816 Alloy up To 1650 F Under Fatigue and Static Stress


Fatigue, rupture, and creep data obtained under various combinations of mean and alternating stress are presented for S-816 alloy at temperatures of 75, 1350, 1500, and 1650 F. Tests were performed under axial stress on unnotched specimens and specimens having theoretical stress concentration factors of 2.4 and 3.4. The data are presented as S-N curves and stress range diagrams to show the effect of specimen notch, temperature, ratio of alternating-to-mean stress, and stress magnitude on the fatigue and creep properties. The role of both creep and fatigue as design factors and the relation of notch sensitivity to loading conditions are discussed with particular reference to temperature and ratio of alternating-to-mean stress.

Author Information

Vitovec, F.
University of Minnesota, Minneapolis, Minn
Lazan, B., J.
University of Minnesota, Minneapolis, Minn
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Developed by Committee: E01
Pages: 69–89
DOI: 10.1520/STP44989S
ISBN-EB: 978-0-8031-5933-4
ISBN-13: 978-0-8031-6087-3