<SEC-DOCUMENT>0001104659-20-113839-index.html : 20201009
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<ACCEPTANCE-DATETIME>20201009140613
ACCESSION NUMBER:		0001104659-20-113839
CONFORMED SUBMISSION TYPE:	8-K
PUBLIC DOCUMENT COUNT:		17
CONFORMED PERIOD OF REPORT:	20201007
ITEM INFORMATION:		Entry into a Material Definitive Agreement
ITEM INFORMATION:		Creation of a Direct Financial Obligation or an Obligation under an Off-Balance Sheet Arrangement of a Registrant
ITEM INFORMATION:		Other Events
ITEM INFORMATION:		Financial Statements and Exhibits
FILED AS OF DATE:		20201009
DATE AS OF CHANGE:		20201009

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:		8-K
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-21719
		FILM NUMBER:		201232862

	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
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Document 1 - file: tm2032546-4_8k.htm

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Document 2 - file: tm2032546d4_ex1-1.htm

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Document 3 - file: tm2032546d4_ex4-2.htm

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<FILENAME>tm2032546d4_ex5-1.htm
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Document 4 - file: tm2032546d4_ex5-1.htm

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Document 6 - file: tm2032546d4_ex99-1img001.jpg

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<SEQUENCE>7
<FILENAME>stld-20201007.xsd
<DESCRIPTION>XBRL TAXONOMY EXTENSION SCHEMA
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Document 8 - file: stld-20201007_lab.xml

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<TYPE>EXCEL
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<FILENAME>Financial_Report.xlsx
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<TEXT>
Document 12 - file: Financial_Report.xlsx

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<SEQUENCE>13
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Document 13 - file: Show.js

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<SEQUENCE>14
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Document 14 - file: report.css

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Document 15 - file: FilingSummary.html

Document 15 - RAW XML: FilingSummary.xml

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<SEQUENCE>17
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Document 17 - file: MetaLinks.json

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