<SEC-DOCUMENT>0001577911-13-000002.txt : 20130524
<SEC-HEADER>0001577911-13-000002.hdr.sgml : 20130524
<ACCEPTANCE-DATETIME>20130524165822
ACCESSION NUMBER:		0001577911-13-000002
CONFORMED SUBMISSION TYPE:	3
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20130524
FILED AS OF DATE:		20130524
DATE AS OF CHANGE:		20130524

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Bazemore Eugene Jackson JR
		CENTRAL INDEX KEY:			0001577911

	FILING VALUES:
		FORM TYPE:		3
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-12777
		FILM NUMBER:		13872768

	MAIL ADDRESS:	
		STREET 1:		ONE MUSEUM PLACE, SUITE 500
		STREET 2:		3100 WEST 7TH STREET
		CITY:			FORT WORTH
		STATE:			TX
		ZIP:			76107

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			AZZ INC
		CENTRAL INDEX KEY:			0000008947
		STANDARD INDUSTRIAL CLASSIFICATION:	ELECTRIC LIGHTING & WIRING EQUIPMENT [3640]
		IRS NUMBER:				750948250
		STATE OF INCORPORATION:			TX
		FISCAL YEAR END:			0228

	BUSINESS ADDRESS:	
		STREET 1:		ONE MUSEUM PLACE, SUITE 500
		STREET 2:		3100 W 7TH STREET
		CITY:			FORT WORTH
		STATE:			TX
		ZIP:			76107
		BUSINESS PHONE:		8178100095

	MAIL ADDRESS:	
		STREET 1:		ONE MUSEUM PLACE, SUITE 500
		STREET 2:		3100 W 7TH STREET
		CITY:			FORT WORTH
		STATE:			TX
		ZIP:			76107

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	AZTEC MANUFACTURING CO
		DATE OF NAME CHANGE:	20000911
</SEC-HEADER>
<DOCUMENT>
<TYPE>3
<SEQUENCE>1
<FILENAME>wf-form3_136942909096602.xml
<DESCRIPTION>FORM 3
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0206</schemaVersion>

    <documentType>3</documentType>

    <periodOfReport>2013-05-24</periodOfReport>

    <noSecuritiesOwned>0</noSecuritiesOwned>

    <issuer>
        <issuerCik>0000008947</issuerCik>
        <issuerName>AZZ INC</issuerName>
        <issuerTradingSymbol>AZZ</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001577911</rptOwnerCik>
            <rptOwnerName>Bazemore Eugene Jackson JR</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>ONE MUSEUM PLACE, SUITE 500</rptOwnerStreet1>
            <rptOwnerStreet2>3100 WEST 7TH STREET</rptOwnerStreet2>
            <rptOwnerCity>FORT WORTH</rptOwnerCity>
            <rptOwnerState>TX</rptOwnerState>
            <rptOwnerZipCode>76107</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>VP Corporate Development</officerTitle>
            <otherText></otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable></nonDerivativeTable>

    <derivativeTable>
        <derivativeHolding>
            <securityTitle>
                <value>STOCK APPRECIATION RIGHTS</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <footnoteId id="F2"/>
            </conversionOrExercisePrice>
            <exerciseDate>
                <footnoteId id="F1"/>
            </exerciseDate>
            <expirationDate>
                <footnoteId id="F1"/>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>COMMON STOCK</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>2226.0</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </derivativeHolding>
        <derivativeHolding>
            <securityTitle>
                <value>Restricted Stock Units</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <footnoteId id="F4"/>
            </conversionOrExercisePrice>
            <exerciseDate>
                <footnoteId id="F3"/>
            </exerciseDate>
            <expirationDate>
                <footnoteId id="F3"/>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>COMMON STOCK</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>1122.0</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </derivativeHolding>
    </derivativeTable>

    <footnotes>
        <footnote id="F1">On March 1, 2014, and the subsequent first day in the month of March through 2016 (each, a &quot;Vesting Date&quot;), one-third (1/3) of the Stock Appreciation Rights granted hereby shall vest, and on the March 1, 2016 (the &quot;Final Vesting Date&quot;), any of such Stock Appreciation Rights that are not yet vested shall vest, such that on the Final Vesting Date, all of the Stock Appreciation Rights granted hereby shall be vested on or prior to the Final Vesting Date.</footnote>
        <footnote id="F2">The base price of such SAR shall be determined by the closing price of one share of common stock on the New York Stock Exchange for the grant date of such awards.</footnote>
        <footnote id="F3">If the Awardee remains continuously employed by the Company or an Affiliate through the Vesting Date, the Restricted Stock Unit Awards shall vest as of the Vesting Date. Upon the vesting of such Restricted Stock Unit Awards (either pursuant to the immediately preceding sentence or to the other provisions of this Agreement), the Company shall electronically register one share of Common Stock in the Awardee's name for each vested Restricted Stock Unit Award.  As used herein, the term &quot;Vesting Date&quot; shall mean March 1, 2015.</footnote>
        <footnote id="F4">The base price of such RSU shall be determined by the closing price of one share of common stock on the New York Stock Exchange for the grant date of such awards.</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>DANA PERRY</signatureName>
        <signatureDate>2013-05-24</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
