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Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
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MIC-Info: RSA-MD5,RSA,
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<SEC-DOCUMENT>0000790528-06-000118.txt : 20060705
<SEC-HEADER>0000790528-06-000118.hdr.sgml : 20060704
<ACCEPTANCE-DATETIME>20060705091845
ACCESSION NUMBER:		0000790528-06-000118
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20060630
FILED AS OF DATE:		20060705
DATE AS OF CHANGE:		20060705

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			RYERSON INC.
		CENTRAL INDEX KEY:			0000790528
		STANDARD INDUSTRIAL CLASSIFICATION:	WHOLESALE-METALS SERVICE CENTERS & OFFICES [5051]
		IRS NUMBER:				363425828
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		2621 WEST 15TH PLACE
		CITY:			CHICAGO
		STATE:			IL
		ZIP:			60608
		BUSINESS PHONE:		7737622121

	MAIL ADDRESS:	
		STREET 1:		2621 WEST 15TH PLACE
		CITY:			CHICAGO
		STATE:			IL
		ZIP:			60608

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	RYERSON TULL INC /DE/
		DATE OF NAME CHANGE:	19990301

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	INLAND STEEL INDUSTRIES INC /DE/
		DATE OF NAME CHANGE:	19920703

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			BAXTER JAMESON A
		CENTRAL INDEX KEY:			0001193637

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-09117
		FILM NUMBER:		06941460

	MAIL ADDRESS:	
		STREET 1:		BAXTER ASSOCIATES INC
		STREET 2:		1250 W NORTHWEST HIGHWAY
		CITY:			PALATINE
		STATE:			IL
		ZIP:			60067
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>primary_doc.xml
<DESCRIPTION>PRIMARY DOCUMENT
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0202</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2006-06-30</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0000790528</issuerCik>
        <issuerName>RYERSON INC.</issuerName>
        <issuerTradingSymbol>ryi</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001193637</rptOwnerCik>
            <rptOwnerName>BAXTER JAMESON A</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>BAXTER ASSOCIATES INC</rptOwnerStreet1>
            <rptOwnerStreet2>1250 W NORTHWEST HIGHWAY</rptOwnerStreet2>
            <rptOwnerCity>PALATINE</rptOwnerCity>
            <rptOwnerState>IL</rptOwnerState>
            <rptOwnerZipCode>60067</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>2006-06-30</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>A</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
                <footnoteId id="F1"/>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>666</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>27.03</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>44453.2194</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <footnotes>
        <footnote id="F1">Exempt acquisition under Section 16b-3(d) under the Ryerson Directors' Compensation Plan.</footnote>
    </footnotes>

    <ownerSignature>
        <signatureName>Virginia M. Dowling, as attorney-in-fact</signatureName>
        <signatureDate>2006-07-05</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
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