Stainless steel corrosion in instrumentation pipe

Jean Victal do Nascimento, Rafael Adão de Carvalho, Davi Pereira Garcia, Rômulo Maziero, Edelize Angelica Gomes, Juan Carlos Campos Rubio


Corrosion, being a destructive process, causes damage in almost all industrial sectors. In this way, it is harmful both from an economic, social and, especially, safety point of view, as it can cause failures in critical equipment and components of an industrial process. At this point, stainless steels are considered the most corrosion resistant metals. The resistance depends on the chemical composition and microstructure, factors that directly influence the passivation of these materials. The resistance is proportionally related to the addition of chromium (Cr) to the mixture, as well as other alloying elements, among which is the molybdenum (Mo), whose main function is to maximize corrosion resistance in the marine atmosphere, as in case of austenitic stainless steel AISI 316 which presents in the chemical composition a percentage of the element Mo. Austenitic stainless steels are applied in instrumentation systems in tubing for reliability in severe atmospheres in accordance with ASTM A269 which establishes the materials applicable to this function. Thus, the present work presents, through a review and case study, Pitting Corrosion of tubings of austenitic stainless steel AISI 316 in the presence of chloride ions (Cl-) coming from the marine atmosphere. The results show that there is no change in the longitudinal and transverse structure for all analyzed tubes, showing a homogeneous austenitic structure, free of intergranular precipitations.


Steel AISI 316. Molybdenum. Pitting corrosion.

Texto completo:

PDF (English)


AMERICAN SOCIETY FOR TESTING AND MATERIALS. ASTM A269. Standard Specification for Seamless and Welded Austenitic Stainless Steel Tubing for General Service. Standard, West Conshohocken, 2013.

AMERICAN SOCIETY FOR TESTING AND MATERIALS. ASTM E1508. Standard Guide for Quantitative Analysis by Energy-Dispersive Spectroscopy. Standard, West Conshohocken, 2013.

AMERICAN SOCIETY FOR TESTING AND MATERIALS. ASTM G46. Standard Guide for Examination and Evaluation of Pitting Corrosion. Standard, West Conshohocken, 2013.

BRAZILIAN ASSOCIATION OF TECHNICAL STANDARDS. NBR 171. Steel Tubes - Hardness Test. Rio de Janeiro, 2000.

BRAZILIAN ASSOCIATION OF TECHNICAL STANDARDS. NBR 315. Non-Destructive Tests - Visual Test - Procedure. Rio de Janeiro, 2007.

CHIAVERINI, V. Mechanical engineering materials. 2th. ed. São Paulo: Mcgraw-Hill, 1986.

GENTIL, V. Corrosion. 6th. ed. Rio de Janeiro: LTC, 2011.

GEMELLI, E. Corrosion of metallic materials and their characterization. 1th. ed. Rio de Janeiro: LTC, 2014.

GRACHEV, V.; NECHAEV, I.; ROZEN, A. E.; ROZEN, A. A. Mechanism of pitting corrosion protection of metals and alloys in new-generation water treatment plants. MATEC Web of Conferences, v. 132, n. 03013, p. 1-5, 2017.

GUO, P.; LA PLANTE, E. C.; WANG, B.; CHEN, X.; BALONIS, M.; BAUCHY, M.; SANT, G. Direct observation of pitting corrosion evolutions on carbon steel surfaces at the nano-to-micro- scales. Scientific Reports, v. 8, n. 7990, p. 1-12, 2018.

LI, Y.; HE, Y.; QIU, J.; ZHAO, J.; YE, Q.; ZHU, Y.; MAO, J. Enhancement of pitting corrosion resistance of austenitic stainless steel through deposition of amorphous/nanocrystalline oxy-nitrided phases by active screen plasma treatment. Materials Research, v. 21, n. 6, p. 1-10, 2018.

MARTINS, N. F.; LEBRÃO, S. M. G. Evaluation of Pitting Corrosion in Thermally Treated Uns S44400 Ferritic Stainless Steels and Analyzed in a Potentiodynamic Polarization Test. Mauá Engineering School, São Caetano do Sul, 2012.

MONTEIRO, F. T.; LEBRÃO, S. G. Metallographic and Hardness Evaluation of Thermally Treated Saf 2707 Hd Hyper Duplex Stainless Steel. Instituto Mauá, São Paulo, 2015.

PARDO, A.; MERINO, M. C.; COY, A. E.; VIEJO, F.; ARRABAL, R.; MATYKINA, E. Pitting Corrosion Behavior of Austenitic Stainless Steels - Combining Effects of Mn and Mo Additions. Corrosion Science, v. 50, n. 6, p. 1796-1806, 2008.

ROBERGE, P. R. ASM handbook of corrosion engineering. Houston, Mcgraw-Hill, 1999.

SILVA, A. L. V. C.; MEI, P. R. Special steels, and alloys. 3th. ed. São Paulo: Blucher, 2013.

SOKEI, C. R.; FERREIRA, I.; TOKIMATSU, R. C.; VENTRELLA, V. A.; GALLEGO, J.; DELFORGE, D. Y. M.; YAMAKAMI, W. J. Evaluation of the Hardness of the Stainless Steel ISO 5832-9 As a Function of The Aging Temperature Variation. Brazilian Congress of Engineering and Materials Science 17th, Foz do Iguaçu. Proceedings. Campinas: Unicamp, p. 4437-4448, 2006.

STAEHLE, R. W. Transient Stability of Passive Films in Aqueous Solutions. Corrosion Science, Minnesota, 2007.

TECMETAL. Characterization of Pipes of the Gas Discharge System (Pdeg). Technical Report, Macaé, 2004.

TELLES, P. C. S. Materials for process equipment. 6th. ed. Rio de Janeiro: Interciência, 2003.


  • Não há apontamentos.

Direitos autorais 2019 Cadernos UniFOA

Licença Creative Commons
Esta obra está licenciada sob uma licença Creative Commons Atribuição - Não comercial - Compartilhar igual 4.0 Internacional.

Cadernos UniFOA

Campus Três Poços - Av. Paulo Erlei A. Abrantes, 1325 - Três Poços
Prédio 3 - Sala 2 (Casarão)
Volta Redonda - RJ - CEP: 27240-560
Tel.: (24) 3340-8400 – Ramal: 8350

Indexado em:

  • Este obra está licenciado com uma Licença Creative Commons Atribuição 4.0 Internacional.