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51312-01265-Corrosion by Concentrated Sulfuric Acid: Variation of Weight Loss Per Unit Area as a Function of Tim

Picture for Corrosion by Concentrated Sulfuric Acid: Variation of Weight Loss Per Unit Area as a Function of Tim
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Product Number: 51312-01265-SG
ISBN: 01265 2012 CP
Author: Zehbour Panossian
Publication Date: 2012
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Abstract One of the great problems faced in the production of concentrated sulfuric acid is its storage and transportation because this acid is very aggressive. Carbon steel and austenitic stainless steel (ASTM A 36; API 5L GrB; AISI 316L) are the most commonly used alloys. When these alloys come into contact with concentrated sulfuric acid there is an immediate acid attack with the formation of a protective layer on the metallic surface. Corrosion rate mean values of these alloys in concentrated sulfuric acid can be found in the literature; however data on the variation of the corrosion rates as a function of immersion time are rare. This type of study is important because it allows estimating the time of formation of the protective layer and the amount of hydrogen formed soon after the metal contact with the acid. This paper aims to present curves of variation of corrosion rate as a function of immersion time obtained for ASTM A 36 and API 5L GrB carbon steels and AISI 316L stainless steel in sulfuric acid at concentrations of 93.5 % 96 % and 98 % at room temperature. Curves for a high corrosion resistant alloy (Alloy 20) are also presented.
Abstract One of the great problems faced in the production of concentrated sulfuric acid is its storage and transportation because this acid is very aggressive. Carbon steel and austenitic stainless steel (ASTM A 36; API 5L GrB; AISI 316L) are the most commonly used alloys. When these alloys come into contact with concentrated sulfuric acid there is an immediate acid attack with the formation of a protective layer on the metallic surface. Corrosion rate mean values of these alloys in concentrated sulfuric acid can be found in the literature; however data on the variation of the corrosion rates as a function of immersion time are rare. This type of study is important because it allows estimating the time of formation of the protective layer and the amount of hydrogen formed soon after the metal contact with the acid. This paper aims to present curves of variation of corrosion rate as a function of immersion time obtained for ASTM A 36 and API 5L GrB carbon steels and AISI 316L stainless steel in sulfuric acid at concentrations of 93.5 % 96 % and 98 % at room temperature. Curves for a high corrosion resistant alloy (Alloy 20) are also presented.
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Picture for 04233 Alloy Selection for Dilute and Medium
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04233 Alloy Selection for Dilute and Medium Concentration Sulfuric Acid

Product Number: 51300-04233-SG
ISBN: 04233 2004 CP
Author: Ulrich Brill and Helena Alves, ThyssenKrupp VDM GmbH
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Sulfuric acid is one of the most important elementary substances of the chemical industry.  There is no stainless steel or even a nickel base alloy available which is suitable over the entire concentration range.  This paper will give corrosion data in up to 75 % sulfuric acid at boiling temperature for various commercial grades as well as for some new developmental alloys.
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51312-01502-The corrosion resistance of duplex stainless steel grades in sulfuric acid

Product Number: 51312-01502-SG
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