Proceedings of the 2000 ASME Pressure Vessels and Piping Conference July 23-27, 2000 Seattle, Washington. Volume of 24 full-length, peer-reviewed technical papers address the unresolved issues in the areas of material degradation, failure and life prediction under complex operating conditions. Sampling of contents includes: A Multiaxial Theory With Consideration of Mean Stress Effects, Fatigue Performance Of Flux-Assisted Inert Gas Girth Welded Piping, Use Of Miniature Specimens For Creep Crack Growth Testing, Fuzzy Pattern Recognition For Mechanical Properties Of Materials, Constraint Effect And Crack Curving Under Mode I Conditions, Temper Embrittlement And Carbide Behavior of CrMo Steels For Hydroprocessing Reactor Under 50,000 Hours Isothermal Aging.