    <SEC-DOCUMENT>0001104659-20-023228-index.html : 20200220
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    <ACCEPTANCE-DATETIME>20200220123149
    ACCESSION NUMBER:		0001104659-20-023228
    CONFORMED SUBMISSION TYPE:	6-K
    PUBLIC DOCUMENT COUNT:		27
    CONFORMED PERIOD OF REPORT:	20200219
    FILED AS OF DATE:		20200220
    DATE AS OF CHANGE:		20200220

    FILER:

    	COMPANY DATA:
    		COMPANY CONFORMED NAME:			GERDAU S.A.
    		CENTRAL INDEX KEY:			0001073404
    		STANDARD INDUSTRIAL CLASSIFICATION:	STEEL WORKS, BLAST FURNACES & ROLLING & FINISHING MILLS [3310]
    		IRS NUMBER:				000000000
    		STATE OF INCORPORATION:			D5
    		FISCAL YEAR END:			1231

    	FILING VALUES:
    		FORM TYPE:		6-K
    		SEC ACT:		1934 Act
    		SEC FILE NUMBER:	001-14878
    		FILM NUMBER:		20633653

    	BUSINESS ADDRESS:
    		STREET 1:		AV DOUTORA RUTH CARDOSO, 8,501
    		STREET 2:		8TH FLOOR
    		CITY:			SAO PAULO, SP
    		STATE:			D5
    		ZIP:			05425-070
    		BUSINESS PHONE:		011-55-51-3323-2703

    	MAIL ADDRESS:
    		STREET 1:		AV DOUTORA RUTH CARDOSO, 8,501
    		STREET 2:		8TH FLOOR
    		CITY:			SAO PAULO, SP
    		STATE:			D5
    		ZIP:			05425-070

    	FORMER COMPANY:
    		FORMER CONFORMED NAME:	GERDAU SA
    		DATE OF NAME CHANGE:	19981112
    </SEC-HEADER>
    <DOCUMENT>
    <TYPE>6-K
    <SEQUENCE>1
    <FILENAME>tm209390-1_6k.htm
    <DESCRIPTION>FORM 6-K
    <TEXT>
    Document 1 - file: tm209390-1_6k.htm

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    <DOCUMENT>
    <TYPE>EX-99.1
    <SEQUENCE>2
    <FILENAME>tm209390d1_ex99-1.htm
    <DESCRIPTION>EXHIBIT 99.1
    <TEXT>
    Document 2 - file: tm209390d1_ex99-1.htm

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    <SEQUENCE>3
    <FILENAME>tm209390d1_ex99-2.htm
    <DESCRIPTION>EXHIBIT 99.2
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    Document 3 - file: tm209390d1_ex99-2.htm

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