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10336 A New Corrosion-Resistant NI-MO-CR Alloy for the Most Versatile Environments

Picture for 10336 A New Corrosion-Resistant NI-MO-CR Alloy for the Most Versatile Environments
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Product Number: 51300-10336-SG
ISBN: 10336 2010 CP
Author: Nacéra Sabrina Meck, P. Crook and P. E. Manning
Publication Date: 2010
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Corrosion-resistant nickel alloys are vital to the chemical process industry. They are known to be significantly more resistant than stainless steels to key chemicals such as hydrochloric and sulfuric acids. Even though the Ni-Cr-Mo alloys possess an excellent corrosion performance, there has always been a need for materials with improved resistance to these two mineral acids without the drawbacks of the Ni-Mo materials. These drawbacks are mainly related to their intolerance to dissolved oxygen and oxidizing chemicals, and these Ni-Mo alloys are much less stable metallurgically than the Ni-Cr-Mo alloys. To fill in this gap, a new Ni-Mo-Cr alloy was recently developed and commercialized. This paper will provide new comparative corrosion data between the new alloy and several Ni-Cr-Mo and Ni-Mo materials in a variety of environments, mainly in hydrochloric and sulfuric acids, with a special emphasis on the effects of oxidizing chemicals in the acids.

Key words: New Ni-Mo-Cr alloy, Ni-Cr-Mo, Ni-Mo, iso-corrosion diagrams, hydrochloric acid, sulfuric acid, dissolved oxygen, ferric ions, and cupric ions
Corrosion-resistant nickel alloys are vital to the chemical process industry. They are known to be significantly more resistant than stainless steels to key chemicals such as hydrochloric and sulfuric acids. Even though the Ni-Cr-Mo alloys possess an excellent corrosion performance, there has always been a need for materials with improved resistance to these two mineral acids without the drawbacks of the Ni-Mo materials. These drawbacks are mainly related to their intolerance to dissolved oxygen and oxidizing chemicals, and these Ni-Mo alloys are much less stable metallurgically than the Ni-Cr-Mo alloys. To fill in this gap, a new Ni-Mo-Cr alloy was recently developed and commercialized. This paper will provide new comparative corrosion data between the new alloy and several Ni-Cr-Mo and Ni-Mo materials in a variety of environments, mainly in hydrochloric and sulfuric acids, with a special emphasis on the effects of oxidizing chemicals in the acids.

Key words: New Ni-Mo-Cr alloy, Ni-Cr-Mo, Ni-Mo, iso-corrosion diagrams, hydrochloric acid, sulfuric acid, dissolved oxygen, ferric ions, and cupric ions
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10337 An Advanced Super-Austenitic Stainless Steel Offers Economical and Technical AdvantagesOver Nickel-Base Corrosion-Resistant Alloys in the Process Industries

Product Number: 51300-10337-SG
ISBN: 10337 2010 CP
Author: Ruben Muro, Marlena Neighbor, Lewis Shoemaker and James R. Crum
Publication Date: 2010
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An advanced grade of super-austenitic stainless steel with a reduced content of nickel offers a significant economic advantage over nickel-base CRA’s. As the alloy is readily fabricated by conventional techniques, it is an excellent candidate for a variety of applications in the chemical, petrochemical, mining, oil and gas, and refining industries.
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04430 Effect of Ferric Ions on the Corrosion Performance of Nickel Alloys in Hydrochloric Acid Solutions

Product Number: 51300-04430-SG
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