Case history - Corrosion failure of duplex stainless steel equipment in a PVC plant

Authors
Davies, M Potgieter, G
Citation
M. Davies et G. Potgieter, Case history - Corrosion failure of duplex stainless steel equipment in a PVC plant, MATER PERF, 39(5), 2000, pp. 76-79
Citations number
3
Categorie Soggetti
Material Science & Engineering
Journal title
MATERIALS PERFORMANCE
ISSN journal
00941492 → ACNP
Volume
39
Issue
5
Year of publication
2000
Pages
76 - 79
Database
ISI
SICI code
0094-1492(200005)39:5<76:CH-CFO>2.0.ZU;2-W
Abstract
After <9 months of operation in a polyvinyl chloride (PVC) manufacturing pl ant, alloy 2205 duplex stainless steel (UNS 31803) columns and spiral heat exchangers (HXs) were corroding and cracking. The columns were repaired and remained in service but the HXs needed to be replaced. Candidate materials for the HXs were assessed, and it was found that the super-austenitic allo ys containing 6% molybdenum would be more appropriate for this application.