Exhibit 15.13 CONSENT OF QUALIFIED PERSON Re: Annual Report on Form 20 -F of ArcelorMittal «KAI» Ltd., in connection with ArcelorMittal's Annual Report on Form 20-F for the year ended December 31, 2021 (the "2021 20-F"): a) certify that we have supervised and validated the preparation of the mineral reserve/resource estimates for ArcelorMittal Kryvyi Rih Open Pit; b) consent to the use of and references to our name, including our status as an expert or"qualified person" (as defined in Subpart 1300 of Regulation S-K promulgated by the U.S. Securities and Exchange Commission), in connection with the 2021 20-F and mineral reserve/resource estimates for ArcelorMittal Kryvyi Rih Open Pit; c) consent to the incorporation by reference of the 2021 20-F into the Registration Statements Nos. 333-147382, 333-153576, 333-162697 and 333-170117 on Form S-8 and Registration Statement No. 333-256031 on Form F-3 (and any amendments or supplements thereto). «KAI» Ltd. is responsible for authoring, and this consent pertains to, mineral reserve/resource estimates for ArcelorMittal Kryvyi Rih. «KAI» Ltd. certifies that it has read the 2021 20-F and that it fairly and accurately represents the mineral reserves/ resources for each property for which we are responsible. Dated: January 21, 2022 /s/Mykhailo Nazarenko Mykhailo Nazarenko Director of «KAI» Ltd. Member of Australasian Institute of Mining and Metallurgy

CONSENT OF QUALIFIED PERSON Re: Annual Report on Form 20 -F of ArcelorMittal «KAI» Ltd., in connection with ArcelorMittal's Annual Report on Form 20-F for the year ended December 31, 2021 (the "2021 20-F"): a) certify that we have supervised and validated the preparation of the mineral reserve/resource estimates for ArcelorMittal Kryvyi Rih Underground Mine; b) consent to the use of and references to our name, including our status as an expert or"qualified person" (as defined in Subpart 1300 of Regulation S-K promulgated by the U.S. Securities and Exchange Commission), in connection with the 2021 20-F and mineral reserve/resource estimates for ArcelorMittal Kryvyi Rih Underground Mine; c) consent to the incorporation by reference of the 2021 20-F into the Registration Statements Nos. 333-147382, 333-153576, 333-162697 and 333-170117 on Form S-8 and Registration Statement No. 333-256031 on Form F-3 (and any amendments or supplements thereto). «KAI» Ltd. is responsible for authoring, and this consent pertains to, mineral reserve/resource estimates for ArcelorMittal Kryvyi Rih Underground Mine. «KAI» Ltd. certifies that it has read the 2021 20-F and that it fairly and accurately represents the mineral reserves/resources for each property for which we are responsible. Dated: January 21, 2022 /s/Mykhailo Nazarenko Mykhailo Nazarenko Director of «KAI» Ltd. Member of Australasian Institute of Mining and Metallurgy.