CORROSION OF TYPE 304 STAINLESS STEEL IN SIMULATED SUPERHEAT REACTOR ENVIRONMENTS
Type 304 stainless steel cladding material was corrosion tested under heat transfer conditions at metal temperatures up to 1300 deg F in specially constructed out-ofpile superheat facilities. The hydrogen and oxygen contents of the steam were controlled to simulate that found in boiling water reactor type systems. Good corrosion resistance and low metal release to system up to metal temperatures of 1100 deg F were experienced with an expected pattern of an initially high corrosion rate that decreased to a lower constant rate with time up to 4500 hours. A high-alloy layer developed adjacent to the scale in the 1100 to 1300 deg F metal temperature range on the heat transfer specimens. The layer continued to grow with time but had little effect on the corrosion rate within the 2500-hours of testing. Deposited carry-over products were analyzed. Intergranular attack was associated with scale fluxing in the higher temperature areas. (auth)
- Research Organization:
- General Electric Co. Vallecitos Atomic Lab., San Jose, Calif.
- NSA Number:
- NSA-16-030734
- OSTI ID:
- 4768182
- Report Number(s):
- GEAP-3779
- Country of Publication:
- United States
- Language:
- English
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