    <SEC-DOCUMENT>0001104659-25-023478-index.html : 20250313
    <SEC-HEADER>0001104659-25-023478.hdr.sgml : 20250313
    <ACCEPTANCE-DATETIME>20250313162106
    ACCESSION NUMBER:		0001104659-25-023478
    CONFORMED SUBMISSION TYPE:	ARS
    PUBLIC DOCUMENT COUNT:		1
    CONFORMED PERIOD OF REPORT:	20241231
    FILED AS OF DATE:		20250313
    DATE AS OF CHANGE:		20250313
    EFFECTIVENESS DATE:		20250313

    FILER:

    	COMPANY DATA:
    		COMPANY CONFORMED NAME:			STEEL DYNAMICS INC
    		CENTRAL INDEX KEY:			0001022671
    		STANDARD INDUSTRIAL CLASSIFICATION:	STEEL WORKS, BLAST FURNACES  ROLLING MILLS (COKE OVENS) [3312]
    		ORGANIZATION NAME:           	04 Manufacturing
    		IRS NUMBER:				351929476
    		STATE OF INCORPORATION:			IN
    		FISCAL YEAR END:			1231

    	FILING VALUES:
    		FORM TYPE:		ARS
    		SEC ACT:		1934 Act
    		SEC FILE NUMBER:	000-21719
    		FILM NUMBER:		25736087

    	BUSINESS ADDRESS:
    		STREET 1:		7575 W JEFFERSON BLVD
    		CITY:			FORT WAYNE
    		STATE:			IN
    		ZIP:			46804
    		BUSINESS PHONE:		260 459 3553

    	MAIL ADDRESS:
    		STREET 1:		7575 W JEFFERSON BLVD
    		CITY:			FORT WAYNE
    		STATE:			IN
    		ZIP:			46804
    </SEC-HEADER>
    <DOCUMENT>
    <TYPE>ARS
    <SEQUENCE>1
    <FILENAME>tm2429101d1_ars.pdf
    <DESCRIPTION>ARS
    <TEXT>
    Document 1 - file: tm2429101d1_ars.pdf

    </DOCUMENT>
    </SEC-DOCUMENT>