Low-Cycle Thermal Fatigue Failure of a Type 304 Stainless Steel Tee Fitting
Several failures occurred in 64-mm schedule 80 type 304 stainless steel (ASME SA-312, grade TP304) piping in a steam-plant heat-exchanger system near tee fittings at which cool water returning from the heat exchanger was combined with hot water from a bypass. Various portions of the piping were subjected to temperatures ranging from 29 to 288 deg C. Each of the failures were revealed to consist of transgranular cracking in and/or close to the circumferential butt weld joining the tee fitting to the downstream pipe leg, where the hot bypass water mixed with the cool return water. The transgranular cracks...
Low-Cycle Thermal Fatigue Failure of a Type 304 Stainless Steel Tee Fitting, ASM Failure Analysis Case Histories: Failure Modes and Mechanisms, ASM International, 2019, https://doi.org/10.31399/asm.fach.modes.c0048361
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