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51315-5456-Corrosion Evaluation of Ni-Cr-Mo Alloys in Acidic Solutions

Picture for Corrosion Evaluation of Ni-Cr-Mo Alloys in Acidic Solutions
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Product Number: 51315-5456-SG
ISBN: 5456 2015 CP
Author: Brian DeForce
Publication Date: 2015
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Nickel-chromium-molybdenum (Ni-Cr-Mo) alloys are used in the chemical processing industry for very aggressive conditions. They have a long history of use in acids such as hydrochloric (HCl) and sulfuric (H2SO4) over a range of concentrations and temperature. Selection of the appropriate Ni-Cr-Mo alloy for a given environment is not always straightforward. This paper compares the corrosion resistance of three common highly corrosion-resistant alloys in several acid solutions. The corrosion resistance of UNS N10276[1] UNS N06022 and UNS N06059 were measured in four environments. The solutions used were 10% HCl at 40 °C 35% HCl at 50 °C 20% H2SO4 at the boiling point and 85% H2SO4 at the boiling point. Additionally the effect of chloride on sulfuric acid corrosion was investigated in a boiling solution of 5% H2SO4 with 2000 ppm of chloride. The results show that the ranking of these alloys relative to corrosion resistance is dependent on the specific environment.[1] Unified Numbering System for Metals and Alloys (UNS). UNS numbers are listed in the Metals & Alloys in the Unified Numbering System 12th ed. (Warrendale PA: SAE International and West Conhonshoken PA: ASTM International 2012).
Nickel-chromium-molybdenum (Ni-Cr-Mo) alloys are used in the chemical processing industry for very aggressive conditions. They have a long history of use in acids such as hydrochloric (HCl) and sulfuric (H2SO4) over a range of concentrations and temperature. Selection of the appropriate Ni-Cr-Mo alloy for a given environment is not always straightforward. This paper compares the corrosion resistance of three common highly corrosion-resistant alloys in several acid solutions. The corrosion resistance of UNS N10276[1] UNS N06022 and UNS N06059 were measured in four environments. The solutions used were 10% HCl at 40 °C 35% HCl at 50 °C 20% H2SO4 at the boiling point and 85% H2SO4 at the boiling point. Additionally the effect of chloride on sulfuric acid corrosion was investigated in a boiling solution of 5% H2SO4 with 2000 ppm of chloride. The results show that the ranking of these alloys relative to corrosion resistance is dependent on the specific environment.[1] Unified Numbering System for Metals and Alloys (UNS). UNS numbers are listed in the Metals & Alloys in the Unified Numbering System 12th ed. (Warrendale PA: SAE International and West Conhonshoken PA: ASTM International 2012).
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Picture for Corrosion of Ni-based Alloys and Stainless Steels in Mixed Acids and Salts—Experimental and Modeling
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51315-5430-Corrosion of Ni-based Alloys and Stainless Steels in Mixed Acids and Salts—Experimental and Modeling Results

Product Number: 51315-5430-SG
ISBN: 5430 2015 CP
Author: Narasi Sridhar
Publication Date: 2015
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Picture for The Performance of Corrosion Resistant Ni-Cr-Mo Alloys in Concentrated Hydrochloric Acid
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51317--9639-The Performance of Corrosion Resistant Ni-Cr-Mo Alloys in Concentrated Hydrochloric Acid

Product Number: 51317--9639-SG
ISBN: 9639 2017 CP
Author: Suresh Divi
Publication Date: 2017
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This paper is to study the corrosion performance of various Ni based alloys in high concentrations of HCl acids below the boiling point. Nickel-based alloys C-276 (UNS N10276), C-22 (UNS N06022), C-2000 (UNS N06200), Hybrid-BC1 (UNS N10362) and B-3 (UNS N10675) were investigated.

 
Picture for Uniform and Localized Corrosion Study of Base Material and Welds of Ni-Cr-Mo (W) Alloys
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Uniform and Localized Corrosion Study of Base Material and Welds of Ni-Cr-Mo (W) Alloys

Product Number: 51317--9406-SG
ISBN: 9406 2017 CP
Author: Ajit Mishra
Publication Date: 2017
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In the present study, corrosion behavior of base metal (BM), all-weld-metal (AWM) and heat-affected-zone (HAZ) samples of C-276 (UNS N10276), C-22 (UNS N06022) and C-2000 (UNS N06200) alloys were evaluated in concentrated hydrochloric (HCl), sulfuric (H2SO4) and nitric acid (HNO3).

 
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