-----BEGIN PRIVACY-ENHANCED MESSAGE-----
Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
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 TWSM7vrzLADbmYQaionwg5sDW3P6oaM5D3tdezXMm7z1T+B+twIDAQAB
MIC-Info: RSA-MD5,RSA,
 DpMd7WKGV/zpwfNUdIB01UMsTY23J6ogjO3aNQ0PAX9Km5aT7D/PJTOLvN/wA9L0
 foIpvRA1w/nM6jxpDVLnwA==

<SEC-DOCUMENT>0000932440-08-000685.txt : 20081021
<SEC-HEADER>0000932440-08-000685.hdr.sgml : 20081021
<ACCEPTANCE-DATETIME>20081021171244
ACCESSION NUMBER:		0000932440-08-000685
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20081017
FILED AS OF DATE:		20081021
DATE AS OF CHANGE:		20081021

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			MASON SCOTT C
		CENTRAL INDEX KEY:			0001120330

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-33342
		FILM NUMBER:		081133891

	BUSINESS ADDRESS:	
		BUSINESS PHONE:		646-429-1505

	MAIL ADDRESS:	
		STREET 1:		C/O NOVAMERICAN STEEL INC
		STREET 2:		28 WEST 44TH STREET, 16TH FLOOR
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10036

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			NOVAMERICAN STEEL INC.
		CENTRAL INDEX KEY:			0001362614
		STANDARD INDUSTRIAL CLASSIFICATION:	STEEL WORKS, BLAST FURNACES & ROLLING & FINISHING MILLS [3310]
		IRS NUMBER:				204790836
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1124

	BUSINESS ADDRESS:	
		STREET 1:		1050 UNIVERSITY AVENUE
		CITY:			NORWOOD
		STATE:			MA
		ZIP:			02062
		BUSINESS PHONE:		781-762-0123

	MAIL ADDRESS:	
		STREET 1:		1050 UNIVERSITY AVENUE
		CITY:			NORWOOD
		STATE:			MA
		ZIP:			02062

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	Symmetry Holdings Inc
		DATE OF NAME CHANGE:	20060512
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>edgar.xml
<DESCRIPTION>PRIMARY DOCUMENT
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0303</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2008-10-17</periodOfReport>

    <issuer>
        <issuerCik>0001362614</issuerCik>
        <issuerName>NOVAMERICAN STEEL INC.</issuerName>
        <issuerTradingSymbol>TONS</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001120330</rptOwnerCik>
            <rptOwnerName>MASON SCOTT C</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O NOVAMERICAN STEEL INC.</rptOwnerStreet1>
            <rptOwnerStreet2>1050 UNIVERSITY AVENUE</rptOwnerStreet2>
            <rptOwnerCity>NORWOOD</rptOwnerCity>
            <rptOwnerState>MA</rptOwnerState>
            <rptOwnerZipCode>02062</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2008-10-17</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>P</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>5000</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>1.53</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>368820</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value></value>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <footnotes></footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>/s/ Karen G. Narwold, as Attorney-in-Fact</signatureName>
        <signatureDate>2008-10-21</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
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