<SEC-DOCUMENT>0000931148-21-000165.txt : 20211115
<SEC-HEADER>0000931148-21-000165.hdr.sgml : 20211115
<ACCEPTANCE-DATETIME>20211115134219
ACCESSION NUMBER:		0000931148-21-000165
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20211112
FILED AS OF DATE:		20211115
DATE AS OF CHANGE:		20211115

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Germain Jean-Marc
		CENTRAL INDEX KEY:			0001888729

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-13888
		FILM NUMBER:		211408794

	MAIL ADDRESS:	
		STREET 1:		982 KEYNOTE CIRCLE
		CITY:			BROOKLYN HEIGHTS
		STATE:			OH
		ZIP:			44131

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			GRAFTECH INTERNATIONAL LTD
		CENTRAL INDEX KEY:			0000931148
		STANDARD INDUSTRIAL CLASSIFICATION:	ELECTRICAL INDUSTRIAL APPARATUS [3620]
		IRS NUMBER:				272496053
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		982 KEYNOTE CIRCLE
		CITY:			BROOKLYN HEIGHTS
		STATE:			OH
		ZIP:			44131
		BUSINESS PHONE:		2166762000

	MAIL ADDRESS:	
		STREET 1:		982 KEYNOTE CIRCLE
		CITY:			BROOKLYN HEIGHTS
		STATE:			OH
		ZIP:			44131

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	UCAR INTERNATIONAL INC
		DATE OF NAME CHANGE:	19941011
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>wf-form4_163700172435009.xml
<DESCRIPTION>FORM 4
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0306</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2021-11-12</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0000931148</issuerCik>
        <issuerName>GRAFTECH INTERNATIONAL LTD</issuerName>
        <issuerTradingSymbol>EAF</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001888729</rptOwnerCik>
            <rptOwnerName>Germain Jean-Marc</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O GRAFTECH INTERNATIONAL LTD.</rptOwnerStreet1>
            <rptOwnerStreet2>982 KEYNOTE CIRCLE</rptOwnerStreet2>
            <rptOwnerCity>BROOKLYN HEIGHTS</rptOwnerCity>
            <rptOwnerState>OH</rptOwnerState>
            <rptOwnerZipCode>44131</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle></officerTitle>
            <otherText></otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2021-11-12</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>P</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>35000</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>12.7467</value>
                    <footnoteId id="F1"/>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>35000</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <derivativeTable></derivativeTable>

    <footnotes>
        <footnote id="F1">The price reported in Column 4 is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $12.73 to $12.76. The reporting person undertakes to provide to GrafTech International Ltd., any security holder of GrafTech International Ltd., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares purchased at each separate price within the range set forth in this footnote to this Form 4.</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>/s/ Andrew J. Renacci, by power of attorney</signatureName>
        <signatureDate>2021-11-15</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
