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This is to certify that your paper entitled «Study of the effects of lower bainite volume fraction on tensile and impact properties of D۶AC medium carbon low alloy ultrahigh strength steel» was indexed with 8 pages, in the CIVILICA citation database, code COI:JR_IJMSEI-7-3_003, after evaluation and approval of the referees of the "Iranian Journal of Materials Science and Engineering Vol 7, Issue 3 , Year 2023.

While offering our congratulations on the indexation of your paper, please be informed that this certificate is prepared based on the information submitted by the secretariat of the above journal and the information contained in the CIVILICA database, and the accuracy of its content can be inquired at any time through link provided at the bottom of the page or scanning the code image.