<SEC-DOCUMENT>0001104659-19-017770-index.html : 20190327
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<ACCEPTANCE-DATETIME>20190327122324
ACCESSION NUMBER:		0001104659-19-017770
CONFORMED SUBMISSION TYPE:	DEFA14A
PUBLIC DOCUMENT COUNT:		5
FILED AS OF DATE:		20190327
DATE AS OF CHANGE:		20190327
EFFECTIVENESS DATE:		20190327

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]
		IRS NUMBER:				351929476
		STATE OF INCORPORATION:			IN
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		DEFA14A
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-21719
		FILM NUMBER:		19707606

	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>
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<SEQUENCE>1
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Document 1 - file: a19-2540_3defa14a.htm

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Document 2 - file: g25403bei001.gif

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Document 3 - file: g25403bei002.gif

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<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>4
<FILENAME>g25403bei003.gif
<DESCRIPTION>GRAPHIC
<TEXT>
Document 4 - file: g25403bei003.gif

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>5
<FILENAME>g25403bei004.gif
<DESCRIPTION>GRAPHIC
<TEXT>
Document 5 - file: g25403bei004.gif

</DOCUMENT>
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