<SEC-DOCUMENT>0000008947-15-000097.txt : 20150721
<SEC-HEADER>0000008947-15-000097.hdr.sgml : 20150721
<ACCEPTANCE-DATETIME>20150721171139
ACCESSION NUMBER:		0000008947-15-000097
CONFORMED SUBMISSION TYPE:	3
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20150714
FILED AS OF DATE:		20150721
DATE AS OF CHANGE:		20150721

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

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Bacius Chris M.
		CENTRAL INDEX KEY:			0001648393

	FILING VALUES:
		FORM TYPE:		3
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-12777
		FILM NUMBER:		15998382

	MAIL ADDRESS:	
		STREET 1:		ONE MUSEUM PLACE, SUITE 500
		STREET 2:		3100 W. 7TH STREET
		CITY:			FORT WORTH
		STATE:			TX
		ZIP:			76107
</SEC-HEADER>
<DOCUMENT>
<TYPE>3
<SEQUENCE>1
<FILENAME>wf-form3_143751308903483.xml
<DESCRIPTION>FORM 3
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0206</schemaVersion>

    <documentType>3</documentType>

    <periodOfReport>2015-07-14</periodOfReport>

    <noSecuritiesOwned>0</noSecuritiesOwned>

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

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001648393</rptOwnerCik>
            <rptOwnerName>Bacius Chris M.</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>
        <nonDerivativeHolding>
            <securityTitle>
                <value>COMMON STOCK</value>
            </securityTitle>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>1199</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeHolding>
    </nonDerivativeTable>

    <derivativeTable>
        <derivativeHolding>
            <securityTitle>
                <value>STOCK APPRECIATION RIGHTS</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <footnoteId id="F2"/>
            </conversionOrExercisePrice>
            <exerciseDate>
                <footnoteId id="F1"/>
            </exerciseDate>
            <expirationDate>
                <value>2021-09-02</value>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>COMMON STOCK</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>2724.0</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>990.0</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="F5"/>
            </exerciseDate>
            <expirationDate>
                <footnoteId id="F5"/>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>COMMON STOCK</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>1138.0</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </derivativeHolding>
        <derivativeHolding>
            <securityTitle>
                <value>Performance Share Units</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <footnoteId id="F7"/>
            </conversionOrExercisePrice>
            <exerciseDate>
                <footnoteId id="F6"/>
            </exerciseDate>
            <expirationDate>
                <footnoteId id="F6"/>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>COMMON STOCK</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>1138.0</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="F8"/>
            </exerciseDate>
            <expirationDate>
                <footnoteId id="F8"/>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>COMMON STOCK</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>1650.0</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </derivativeHolding>
    </derivativeTable>

    <footnotes>
        <footnote id="F1">The stock appreciate rights (SARs) shall vest over a three year period with 1/3 vesting each of the first, second and third anniversaries beginning on March 1, 2015.</footnote>
        <footnote id="F2">The SARs are settled in shares of AZZ common stock in an amount equal to the excess value of the grant date price over the exercise price.</footnote>
        <footnote id="F3">The restricted stock units (RSUS)shall vest over a three year period with one-third of the RSUs vesting on each of the following dates:  March 1, 2015, March 1, 2016 and March 1, 2017.</footnote>
        <footnote id="F4">Each RSU represents a contingent right to receive one share of AZZ common stock.</footnote>
        <footnote id="F5">Pursuant to the Issuer's 2014 Long Term Incentive Plan (the &quot;2014 Plan&quot;), the RSUs will vest over a three year period with 1/3 of the RSUs vesting each of the first, second and third anniversaries beginning on April 27, 2016.</footnote>
        <footnote id="F6">The performance share units (PSUs) are issued under AZZ's 2014 Plan.  The PSUs will vest and become payable, if at all, on the third anniversary from the date of grant, ranging from 0% to 200% based on AZZ achieving a 8.5% target average adjusted return on assets from March 1, 2015 to February 28, 2018.  In addition, target awards will be subject to a multiplier based on AZZ's total shareholder return for the three year period ranking within the top quartile relative to each company in a custom industry peer group for the same period up to a maximum of 250% of the target award. The number of PSUs reported reflects the target award amount.</footnote>
        <footnote id="F7">Each PSU represents a contingent right to receive shares of AZZ common stock with the actual number varying based on achieved results.</footnote>
        <footnote id="F8">The RSUs shall vest ratably over a two-year period beginning March 1, 2015.  The award will be fully vested on March 1, 2016.</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>/s/ Tara D. Mackey, attorney-in-fact for Chris M. Bacius</signatureName>
        <signatureDate>2015-07-21</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
