Hamdani, Akhyar, Thaib Rizwan, Agus Sasmito, H. Agus Suhartono
Dissimilar welding between austenitic stainless steel SUS304 and low alloy ferritic steel SA213T11 is widely used in the petrochemical and power generation industries because this combination is suitable for use in cor-rosive and high-temperature environments. This study presents a preliminary investigation of dissimilar metal welding between austenitic stainless steel SUS304 and low-alloy steel SA213T11 using gas tungsten arc welding (GTAW) with ER308 filler metal. The mechanical and metallurgical properties of the welded joints were evalu-ated through hardness testing, tensile testing, bend testing, and microstructural analysis. The results show that the welds produced are of acceptable quality, with sound bead appearance and no visible surface defects. Hardness values vary across different weld regions, with the weld zone exhibiting higher hardness due to the presence of δ-ferrite. Tensile tests indicate that the weld strength is comparable to or greater than the weaker base metal, and failure occurs outside the weld region. Microstructural observations reveal significant changes in the heat-affected zones and weld metal, influenced by the thermal cycle and filler composition. These findings provide insight into the performance of ER308 in joining dissimilar metals, which is relevant for applications in power and petrochemical industries. © 2025, Politechnika Lubelska. All rights reserved.
Doctoral Program-School of Engineering, Universitas Syiah Kuala, Jl. Tgk. Chik Pante Kulu No. 5 Komplek Universitas Syiah Kuala, Banda Aceh, 23111, Indonesia; Department of Mechanical Engineering, Politeknik Negeri Lhokseumawe, Jl. Banda Aceh-Medan KM. 280 Buketrata, Lhokseumawe, 24301, Indonesia; Department of Mechanical Engineering, Universitas Syiah Kuala, Jl. Syech Abdurrauf No.7 Darussalam, Banda Aceh, 23111, Indonesia; Department of Capture Fisheries, Marine and Fisheries Faculty, Universitas Syiah Kuala, Jl. Putro Phang, Darussalam, Banda Aceh, 23111, Indonesia; National Research and Innovation Agency of Indonesia, Jl. Hidrodinamika, Sukolilo, Surabaya, 60112, Indonesia; National Research and Innovation Agency of Indonesia, Jl. Raya Puspitek Kawasan Sains dan Teknologi KST BJ. Habibie, Serpong, Gedung 220, Setu, Tangerang Selatan, 15314, Indonesia
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