Ariantos, Ariantos (2024) Pengaruh Fluida Bersirkulasi Terhadap Laju Korosi Baja Astm A36. Other thesis, Universitas Islam Riau.

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Abstract

ASTM A36 steel is the most frequently used type of structural carbon steel in the construction industry. Circulating fluid can affect the corrosion rate. This influence depends on various factors such as the pH of the fluid, flow velocity, temperature, concentration of certain ions in the fluid, and oxygen content, if the pH of the fluid is low (acidic), then the corrosion rate will increase because the acid can damage the protective layer on the steel surface. The purpose of this study is to determine the corrosion rate of ASTM A36 steel on the circulating media with different speed variations, as well as to determine the type of corrosion that occurs. In this study, corrosion testing will be carried out using H2SO4, with variations of flow rate of 460 m/s, 690 m/s, and 921 m/s. Tests were conducted for 6 hours, but observations were made every 2 hours, 4 hours, and 6 hours. The results showed that the speed of fluid flow can affect the corrosion rate in ASTM A36 Steel. The faster the fluid flow, the faster the corrosion rate, the highest corrosion rate occurs at a flow speed of 921 m/s at a soaking time of 2 hours, which is 351.51 mm/y, and the lowest corrosion rate occurs at a flow speed of 460 m/s at a soaking time of 6 hours, which is 177.61 mm/y.

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