Corrosion of stainless steel piping in high manganese fresh water
- Nickel Development Inst., Londonderry, NH (United States)
- Buckman Labs., Memphis, TN (United States)
- Whitman and Howard, Portland, ME (United States)
- Crucible Research, Pittsburgh, PA (United States)
- Nickel Development Inst., Blacksburg, VA (United States)
A potable water treatment plant, designed to reduce manganese and iron in well water, experienced leaks in the 16 in. (406 mm) raw water headers about nine months after startup. The material, type 304 (UNS 30403) stainless steel, was purchased to American Society of Testing Materials specification A 778, with additional stipulations governing internal finish, the use of filler metal, and pickling for scale removal. Laboratory screenings of deposits for bacteria revealed some potentially additive corrosive effects from microbial action. However, the correlation of corrosion with the presence or absence of heat tint in the heat-affected zone of the circumferential welds prevailed as a primary cause of the corrosion observed beneath an adherent manganese-iron deposit in a low chloride, high manganese, raw water.
- OSTI ID:
- 376273
- Journal Information:
- Materials Performance, Vol. 35, Issue 9; Other Information: PBD: Sep 1996
- Country of Publication:
- United States
- Language:
- English
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