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<ACCEPTANCE-DATETIME>20180510161040
ACCESSION NUMBER:		0001104659-18-032157
CONFORMED SUBMISSION TYPE:	6-K
PUBLIC DOCUMENT COUNT:		18
CONFORMED PERIOD OF REPORT:	20180510
FILED AS OF DATE:		20180510
DATE AS OF CHANGE:		20180510

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:		18822599

	BUSINESS ADDRESS:	
		STREET 1:		AV. DAS NACOES UNIDAS, 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. DAS NACOES UNIDAS, 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
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Document 1 - file: a18-13027_26k.htm

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Document 3 - file: g130272mm01i001.jpg

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Document 4 - file: g130272mm01i002.jpg

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Document 5 - file: g130272mm01i003.jpg

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Document 6 - file: g130272mm01i004.jpg

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Document 7 - file: g130272mm01i005.jpg

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Document 8 - file: g130272mm01i006.jpg

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Document 10 - file: g130272mm01i008.jpg

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Document 11 - file: g130272mm03i001.gif

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Document 12 - file: g130272mm03i002.gif

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Document 13 - file: g130272mm03i003.gif

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Document 14 - file: g130272mm03i004.gif

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Document 15 - file: g130272mm03i005.gif

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Document 16 - file: g130272mm03i006.gif

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Document 17 - file: g130272mm03i007.gif

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Document 18 - file: g130272mm03i008.gif

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