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U.S. Department of Energy
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Workshop on thermally treated alloy 690 tubes for nuclear steam generators: proceedings

Conference ·
OSTI ID:5409392

The workshop was held to collect available metallurgical and corrosion data on thermally treated (TT) alloy 690 and to compare these data with that for other candidate tube alloys for nuclear steam generators. The data indicate that TT alloy 690 is the most corrosion-resistant tube alloy. It is immune to stress corrosion cracking (SCC) in primary water, chlorides and sulfates. The TT improves its corrosion resistance to caustic, the most corrosive environment. Manufacturing parameters for alloy 690 tubing are little different than for alloy 600 except that higher mill-annealing temperatures are required. Some optimization of annealing parameters and some additional corrosion testing are needed to complete the qualification of alloy 690.

Research Organization:
Electric Power Research Inst., Palo Alto, CA (USA); Stone and Webster Engineering Corp., Boston, MA (USA)
OSTI ID:
5409392
Report Number(s):
EPRI-NP-4665-S-SR; CONF-8606180-; ON: TI86920431
Country of Publication:
United States
Language:
English