<SEC-DOCUMENT>0001047469-17-002072-index.html : 20170328
<SEC-HEADER>0001047469-17-002072.hdr.sgml : 20170328
<ACCEPTANCE-DATETIME>20170328101634
ACCESSION NUMBER:		0001047469-17-002072
CONFORMED SUBMISSION TYPE:	DEF 14A
PUBLIC DOCUMENT COUNT:		9
CONFORMED PERIOD OF REPORT:	20170518
FILED AS OF DATE:		20170328
DATE AS OF CHANGE:		20170328
EFFECTIVENESS DATE:		20170328

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:		DEF 14A
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-21719
		FILM NUMBER:		17717693

	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>DEF 14A
<SEQUENCE>1
<FILENAME>a2231556zdef14a.htm
<DESCRIPTION>DEF 14A
<TEXT>
Document 1 - file: a2231556zdef14a.htm
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>2 <FILENAME>g22592bgi001.gif <DESCRIPTION>G22592BGI001.GIF <TEXT> Document 2 - file: g22592bgi001.gif
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>3 <FILENAME>g314171.jpg <DESCRIPTION>G314171.JPG <TEXT> Document 3 - file: g314171.jpg
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>4 <FILENAME>g783595.jpg <DESCRIPTION>G783595.JPG <TEXT> Document 4 - file: g783595.jpg
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>5 <FILENAME>g805308.jpg <DESCRIPTION>G805308.JPG <TEXT> Document 5 - file: g805308.jpg
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>6 <FILENAME>g408506.jpg <DESCRIPTION>G408506.JPG <TEXT> Document 6 - file: g408506.jpg
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>7 <FILENAME>g799993.jpg <DESCRIPTION>G799993.JPG <TEXT> Document 7 - file: g799993.jpg
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>8 <FILENAME>g663348.jpg <DESCRIPTION>G663348.JPG <TEXT> Document 8 - file: g663348.jpg
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>9 <FILENAME>g22592bgi002.gif <DESCRIPTION>G22592BGI002.GIF <TEXT> Document 9 - file: g22592bgi002.gif
</DOCUMENT> </SEC-DOCUMENT>