THE EFFECT OF SIGMA PHASE VS. CHROMIUM CARBIDES ON THE INTERGRANULAR CORROSION OF TYPE 316 AND 316L STAINLESS STEEL. PART 2. LABORATORY INVESTIGATION

Journal Article · Fri May 01 00:00:00 EDT 1959 · Corrosion

DOI:https://doi.org/10.5006/0010-9312-15.5.17· OSTI ID:4253135

Warren, D

A laboratory study was made of the intergranular corrosion behavior of Types 316 and 316L stainless steel in l4 different acid environments. lncluded were nitric, nitric --hydrofluoric, acetic, citric, sulfuric, lactic, oxalic, formic, and phosphoric acids. Results of this study showcd that sensitized or welded Type 316L had excellent resistance to intergranular attack in all of the acid media except nitric. This was true despite the presence of a continuous network of sigma phase in the grain boundaries of the sensitized steel. In contrast, Type 316 having a continuous grain boundary network of chromium carbides underwent severe intergranular corrosion in 12 of the 14 environments stuied. (auth)

• Research Organization: E.I. du Pont de Nemours & Co., Wilmington, Del.
• Sponsoring Organization: USDOE
• NSA Number: NSA-13-013591
• OSTI ID: 4253135
• Journal Information: Corrosion, Vol. Vol: 15; Other Information: Orig. Receipt Date: 31-DEC-59
• Country of Publication: Country unknown/Code not available
• Language: English

Related Subjects

METALLURGY AND CERAMICS
ACETIC ACID
CHROMIUM CARBIDES
CITRIC ACID
CORROSION
FORMIC ACID
GRAIN BOUNDARIES
HYDROFLUORIC ACID
LACTIC ACID
NITRIC ACID
ORGANIC ACIDS
OXALIC ACID
PHASE DIAGRAMS
PHOSPHORIC ACID
STABILITY
STAINLESS STEELS
SULFURIC ACID