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U.S. Department of Energy
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Corrosion of materials used in steam generating boiler systems. Final report

Technical Report ·
OSTI ID:5415299
Five alloys, SA178, SA192, SA213-T11, SA213-T22, and Type 304 Stainless Steel, were evaluated on their resistance to pitting in a coal burning boiler and in a residential refuse burning incinerator. The materials were introduced into the vicinity of the boiler tubes using a probe whose temperature was controlled and monitored to simulate conditions of the boiler tubes. After three to six months, the probes were withdrawn and the alloy specimens removed for evaluation. The data indicate that the environment of the refuse burning incinerator was considerably more aggressive than that of the coal burning boiler. Chloride was found in practically all the pits examined in the alloys from the refuse burning system, but no chloride was found in the pits examined on the materials exposed in the coal burning boiler. The data suggest that the moisture from lawn clippings increases the rate of attack which is further aggravated by large temperature fluctuations. Type 304 stainless steel was the most resistant to pitting in both environments, but the SA213-T11 and SA213-T22 were less resistant to pitting than the lower alloy SA178 and SA192 in the refuse burning incinerator.
Research Organization:
National Bureau of Standards, Washington, DC (USA). Metallurgy Div.
DOE Contract Number:
AT01-79CS20528
OSTI ID:
5415299
Report Number(s):
NBSIR-84-2959; ON: DE85017205
Country of Publication:
United States
Language:
English