Title

DESENVOLVIMENTO DE AÇO COM ESPESSURA ACIMA DE 12,5MM PARA ATENDIMENTO AOS REQUISITOS DO GRAU X-80 DA NORMA API NO LTQ DA ARCELORMITTAL TUBARÃO

DEVELOPMENT OF API STEEL GRADES AT ARCELOR MITTAL TUBARÃO

Authorship

Porto, Ricardo; Souza, Marden Valente de; Tarso, Paulo de; Carvalho, Renato Diniz; Bellon, Júlio Cezar; Barbosa, Gleyson Marcos; Godefroid, Leonardo B.

Porto, Ricardo

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Souza, Marden Valente de

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Tarso, Paulo de

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Carvalho, Renato Diniz

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Bellon, Júlio Cezar

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Barbosa, Gleyson Marcos

9 Articles, Downloaded 1902 Times

Godefroid, Leonardo B.

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DOI

10.5151/2594-5297-15661

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Abstract

Objetivando o aumento de produtividade dos gasodutos e das grandes distâncias entre o local de exploração de petróleo até o consumidor final, as empresas petrolíferas têm demandando tubos com resistência mecânica mais elevada. Neste contexto, o uso do grau X80 aumentou de 0,5 Mt nos anos 90 para 2,5 Mt neste século. Visando atender as demandas futuras da Petrobrás para o grau X80, ArcelorMittal Tubarão iniciou o desenvolvimento deste grau, com bobina laminada a quente nas espessuras de 12,70 mm, 14,27 mm e 15,88 mm utilizando aço HSLA e processamento termomecânico controlado, com atendimento aos requisitos da norma.

In order to improve the productivity of pipelines and due to the huge distances from petroleum exploration sites to the final consumers, the petroleum companies have been demanded higher mechanical properties of the pipes. In this context, the use of X80 grade increased from 0.5Mt in 90’s to 2.5 Mt in this century. In order to supply the future Petrobrás demands for X80 grades (thickness > 12.7mm and φpipe >24), ArcelorMittal Tubarão started to develop this grade, using hot coils products, that are lower-priced product in comparison with heavy plate product. It was used a high strength low alloy steel and thermo-mechanical process control to develop this grade in order to reach tensile and toughness requirements of API Standart for X80 grade. The coils thickness produced were 12.70, 14.27 and 15.88mm and the results achieved the requirements.

Keywords

Aços para tubos; Tubos; Gasodutos.

Steel grades for pipelines; API-X80.