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Pay vs Performance Disclosure
Unit_pure in Thousands

12 Months Ended

Dec. 31, 2022

USD ($)

Dec. 31, 2021

USD ($)

Dec. 31, 2020

USD ($)

Pay vs Performance Disclosure [Table]

Pay vs Performance [Table Text Block]

Pay Versus Performance

Year		Summary Compensation Table Total for PEO Kessler(1) ($)		Compensation Actually Paid to PEO Kessler (2) ($)		Summary Compensation Table Total for Former PEO Rintoul(3) ($)		Compensation Actually Paid to Former PEO Rintoul(2) ($)		Average Summary Compensation Table Total for Non-PEO Named Executive Officers(4) ($)		Average Compensation Actually Paid to Non-PEO Named Executive Officers(5) ($)		Value of Initial Fixed $100 Investment Based On:				Net Income (in 000s) ($)		Adjusted EBITDA(6) (in 000s) ($)
														GrafTech Total Stockholder Return		NYSE Arca Steel Index (TR) Total Stockholder Return
2022		1,407,268		1,153,710		1,406,150		1,405,993		1,538,305		1,097,819		$42		$179		382,962		536,464
2021		N/A		N/A		3,445,257		4,377,435		6,471,272		6,656,296		$104		$156		388,330		669,940
2020		N/A		N/A		2,433,525		2,691,429		1,146,426		1,248,844		$93		$121		434,374		658,946

(1) Mr. Kessler joined the Company as our CEO and President on July 1, 2022 and therefore information is not provided for years 2021 or 2020 because he was not our PEO during those years. Our principle executive officer is referred to as the “PEO” in this disclosure.

(2) “Compensation actually paid” to our CEO and former CEO in each of 2022, 2021, and 2020 reflects the respective amounts set forth in the table above, adjusted as set forth in the table below, as determined in accordance with SEC rules. The dollar amounts reflected in the table above do not reflect the actual amount of compensation earned by or paid to our CEO or former CEO during the applicable year. For information regarding the decisions made by our Human Resources and Compensation Committee in regards to the CEO’s and former CEO’s compensation for each fiscal year, please see the “Compensation Discussion & Analysis” sections of the proxy statements reporting pay for the fiscal years covered in the table above.

		2020				2021				2022
		Kessler		Rintoul		Kessler		Rintoul		Kessler		Rintoul
SCT Total Compensation		-		$2,433,525		-		$3,445,257		$1,407,268		$1,406,150
Less: Stock Award Values Reported in SCT for the Covered Year		-		$(765,850)		-		$(1,170,960)		$(446,112)		-
Less: Option Award Values Reported in SCT for the Covered Year		-		$(259,307)		-		$(662,909)		$(244,961)		-
Plus: Year-End Fair Value for Stock and Option Awards Granted in the Covered Year		-		$1,426,122		-		$903		$437,515		$255
Year-End Change in Fair Value of Outstanding Unvested Stock and Option Awards from Prior Years		-		$85,601		-		-		-		$(412)
Change in Fair Value of Stock and Option Awards from Prior Years that Vested in the Covered Year		-		$(145,001)		-		$675,793		-		-
Fair Value for Stock and Option Awards Granted and Vested in the Covered Year		-		$(83,661)		-		$2,089,351		-		-
Less: Fair Value of Stock and Option Awards Forfeited in the Covered Year		-		-		-		-		-		-
Compensation Actually Paid		-		$2,691,429		-		$4,377,435		$1,153,710		$1,405,993

(3) Mr. Rintoul resigned from the Company as our CEO and President on June 30, 2022.

(4) The identity of the non-PEO NEOs for each of 2022, 2021 and 2020 (each, a “Covered Year”) are as follows:

Year		Non-PEO NEOs
2020		Quinn J. Coburn, Jeremy S. Halford, Iñigo Perez Ortiz, Gina K. Gunning
2021		Timothy K. Flanagan, Quinn J. Coburn, Jeremy S. Halford, Iñigo Perez Ortiz, Gina K. Gunning
2022		Timothy K. Flanagan, Jeremy S. Halford, Iñigo Perez Ortiz, Gina K. Gunning

(5) Average “compensation actually paid” for our non-PEO NEOs in each of 2022, 2021 and 2020 reflects the respective amounts set forth in the table above, adjusted as set forth in the table below, as determined in accordance with SEC rules. The dollar amounts reflected in the table above do not reflect the actual amount of compensation earned by or paid to our non-PEO NEOs during the applicable year. For information regarding the decisions made by our Human Resources and Compensation Committee in regards to the non-PEO NEOs’ compensation for each fiscal year, please see the “Compensation Discussion & Analysis” sections of the proxy statements reporting pay for the fiscal years covered in the table above.

		2020		2021		2022
		Non-PEO NEOs		Non-PEO NEOs		Non-PEO NEOs
SCT Total Compensation		$1,146,426		$6,471,272		$1,538,305
Less: Stock Award Values Reported in SCT for the Covered Year		$(238,765)		$(334,400)		$(525,690)
Less: Option Award Values Reported in SCT for the Covered Year		$(80,843)		$(194,973)		$(228,750)
Plus: Year-End Fair Value for Stock and Option Awards Granted in the Covered Year		$442,880		-		$331,139
Year-End Change in Fair Value of Outstanding Unvested Stock and Option Awards from Prior Years		$5,333		$(1,126)		$(10,251)
Change in Fair Value of Stock and Option Awards from Prior Years that Vested in the Covered Year		$(26,400)		$108,379		$(6,934)
Fair Value for Stock and Option Awards Granted and Vested in the Covered Year		$213		$617,144		-
Less: Fair Value of Stock and Option Awards Forfeited in the Covered Year		-		-		-
Compensation Actually Paid		$1,248,844		$6,656,296		$1,097,819

(6) A non-GAAP financial measure. See Appendix A to this Proxy Statement for additional information, including how we define this financial measure and a reconciliation to Net Income, the most directly comparable financial measure calculated and presented in accordance with U.S. GAAP. Please see the “Compensation Discussion and Analysis” section above for more information about adjusted EBITDA, including how we use it in our executive compensation program.

Company Selected Measure Name

adjusted EBITDA

Named Executive Officers, Footnote [Text Block]

The identity of the non-PEO NEOs for each of 2022, 2021 and 2020 (each, a “Covered Year”) are as follows:

Year		Non-PEO NEOs
2020		Quinn J. Coburn, Jeremy S. Halford, Iñigo Perez Ortiz, Gina K. Gunning
2021		Timothy K. Flanagan, Quinn J. Coburn, Jeremy S. Halford, Iñigo Perez Ortiz, Gina K. Gunning
2022		Timothy K. Flanagan, Jeremy S. Halford, Iñigo Perez Ortiz, Gina K. Gunning

Adjustment To PEO Compensation, Footnote [Text Block]

“Compensation actually paid” to our CEO and former CEO in each of 2022, 2021, and 2020 reflects the respective amounts set forth in the table above, adjusted as set forth in the table below, as determined in accordance with SEC rules. The dollar amounts reflected in the table above do not reflect the actual amount of compensation earned by or paid to our CEO or former CEO during the applicable year. For information regarding the decisions made by our Human Resources and Compensation Committee in regards to the CEO’s and former CEO’s compensation for each fiscal year, please see the “Compensation Discussion & Analysis” sections of the proxy statements reporting pay for the fiscal years covered in the table above.

		2020				2021				2022
		Kessler		Rintoul		Kessler		Rintoul		Kessler		Rintoul
SCT Total Compensation		-		$2,433,525		-		$3,445,257		$1,407,268		$1,406,150
Less: Stock Award Values Reported in SCT for the Covered Year		-		$(765,850)		-		$(1,170,960)		$(446,112)		-
Less: Option Award Values Reported in SCT for the Covered Year		-		$(259,307)		-		$(662,909)		$(244,961)		-
Plus: Year-End Fair Value for Stock and Option Awards Granted in the Covered Year		-		$1,426,122		-		$903		$437,515		$255
Year-End Change in Fair Value of Outstanding Unvested Stock and Option Awards from Prior Years		-		$85,601		-		-		-		$(412)
Change in Fair Value of Stock and Option Awards from Prior Years that Vested in the Covered Year		-		$(145,001)		-		$675,793		-		-
Fair Value for Stock and Option Awards Granted and Vested in the Covered Year		-		$(83,661)		-		$2,089,351		-		-
Less: Fair Value of Stock and Option Awards Forfeited in the Covered Year		-		-		-		-		-		-
Compensation Actually Paid		-		$2,691,429		-		$4,377,435		$1,153,710		$1,405,993

Non-PEO NEO Average Total Compensation Amount

$ 1,538,305

$ 6,471,272

$ 1,146,426

Non-PEO NEO Average Compensation Actually Paid Amount

$ 1,097,819

6,656,296

1,248,844

Adjustment to Non-PEO NEO Compensation Footnote [Text Block]

Average “compensation actually paid” for our non-PEO NEOs in each of 2022, 2021 and 2020 reflects the respective amounts set forth in the table above, adjusted as set forth in the table below, as determined in accordance with SEC rules. The dollar amounts reflected in the table above do not reflect the actual amount of compensation earned by or paid to our non-PEO NEOs during the applicable year. For information regarding the decisions made by our Human Resources and Compensation Committee in regards to the non-PEO NEOs’ compensation for each fiscal year, please see the “Compensation Discussion & Analysis” sections of the proxy statements reporting pay for the fiscal years covered in the table above.

		2020		2021		2022
		Non-PEO NEOs		Non-PEO NEOs		Non-PEO NEOs
SCT Total Compensation		$1,146,426		$6,471,272		$1,538,305
Less: Stock Award Values Reported in SCT for the Covered Year		$(238,765)		$(334,400)		$(525,690)
Less: Option Award Values Reported in SCT for the Covered Year		$(80,843)		$(194,973)		$(228,750)
Plus: Year-End Fair Value for Stock and Option Awards Granted in the Covered Year		$442,880		-		$331,139
Year-End Change in Fair Value of Outstanding Unvested Stock and Option Awards from Prior Years		$5,333		$(1,126)		$(10,251)
Change in Fair Value of Stock and Option Awards from Prior Years that Vested in the Covered Year		$(26,400)		$108,379		$(6,934)
Fair Value for Stock and Option Awards Granted and Vested in the Covered Year		$213		$617,144		-
Less: Fair Value of Stock and Option Awards Forfeited in the Covered Year		-		-		-
Compensation Actually Paid		$1,248,844		$6,656,296		$1,097,819

Compensation Actually Paid vs. Total Shareholder Return [Text Block]

Compensation Actually Paid vs. Net Income [Text Block]

Compensation Actually Paid vs. Company Selected Measure [Text Block]

Tabular List [Table Text Block]

Tabular List of Performance Measures

Listed below is the performance measure that in our assessment represents the most important performance measure used by us to link compensation actually paid to our named executive officers for 2022 to Company performance.

Performance Measure		Nature		Explanation
Adjusted EBITDA		Financial Measure		A non-GAAP financial measure. See Appendix A to this Proxy Statement for additional information, including how we define this financial measure and a reconciliation to Net Income, the most directly comparable financial measure calculated and presented in accordance with U.S. GAAP.

Total Shareholder Return Amount

$ 42

104

93

Peer Group Total Shareholder Return Amount

179

156

121

Net Income (Loss)

$ 382,962,000

$ 388,330,000

$ 434,374,000

Company Selected Measure Amount

536,464

669,940

658,946

Measure [Axis]: 1

Pay vs Performance Disclosure [Table]

Measure Name

Adjusted EBITDA

Non-GAAP Measure Description [Text Block]

A non-GAAP financial measure. See Appendix A to this Proxy Statement for additional information, including how we define this financial measure and a reconciliation to Net Income, the most directly comparable financial measure calculated and presented in accordance with U.S. GAAP.

Kessler [Member]

Pay vs Performance Disclosure [Table]

PEO Total Compensation Amount

$ 1,407,268

PEO Actually Paid Compensation Amount

$ 1,153,710

PEO Name

Mr. Kessler

Kessler [Member] | Year-end Fair Value Of Awards Granted In The Current Fiscal Year [Member]

Pay vs Performance Disclosure [Table]

Adjustment to Compensation Amount

$ 437,515

Kessler [Member] | Stock Award Values Reported in SCT for the Covered Year [Member]

Pay vs Performance Disclosure [Table]

Adjustment to Compensation Amount

(446,112)

Kessler [Member] | Option Award Values Reported in SCT for the Covered Year [Member]

Pay vs Performance Disclosure [Table]

Adjustment to Compensation Amount

(244,961)

Rintoul [Member]

Pay vs Performance Disclosure [Table]

PEO Total Compensation Amount

1,406,150

$ 3,445,257

$ 2,433,525

PEO Actually Paid Compensation Amount

$ 1,405,993

4,377,435

2,691,429

PEO Name

Mr. Rintoul

Rintoul [Member] | Year-end Fair Value Of Awards Granted In The Current Fiscal Year [Member]

Pay vs Performance Disclosure [Table]

Adjustment to Compensation Amount

$ 255

903

1,426,122

Rintoul [Member] | Change In Fair Value Of Outstanding And Unvested Awards Granted In Prior Fiscal Years [Member]

Pay vs Performance Disclosure [Table]

Adjustment to Compensation Amount

(412)

85,601

Rintoul [Member] | Change In Fair Value As Of Vesting Date Of Awards Vested During Current Year [Member]

Pay vs Performance Disclosure [Table]

Adjustment to Compensation Amount

2,089,351

(83,661)

Rintoul [Member] | Change In Fair Value As Of Vesting Date Of Prior Year Awards Vested During Current Year [Member]

Pay vs Performance Disclosure [Table]

Adjustment to Compensation Amount

675,793

(145,001)

Rintoul [Member] | Stock Award Values Reported in SCT for the Covered Year [Member]

Pay vs Performance Disclosure [Table]

Adjustment to Compensation Amount

(1,170,960)

(765,850)

Rintoul [Member] | Option Award Values Reported in SCT for the Covered Year [Member]

Pay vs Performance Disclosure [Table]

Adjustment to Compensation Amount

(662,909)

(259,307)

Non-PEO NEO [Member] | Year-end Fair Value Of Awards Granted In The Current Fiscal Year [Member]

Pay vs Performance Disclosure [Table]

Adjustment to Compensation Amount

331,139

442,880

Non-PEO NEO [Member] | Change In Fair Value Of Outstanding And Unvested Awards Granted In Prior Fiscal Years [Member]

Pay vs Performance Disclosure [Table]

Adjustment to Compensation Amount

(10,251)

(1,126)

5,333

Non-PEO NEO [Member] | Change In Fair Value As Of Vesting Date Of Awards Vested During Current Year [Member]

Pay vs Performance Disclosure [Table]

Adjustment to Compensation Amount

617,144

213

Non-PEO NEO [Member] | Change In Fair Value As Of Vesting Date Of Prior Year Awards Vested During Current Year [Member]

Pay vs Performance Disclosure [Table]

Adjustment to Compensation Amount

(6,934)

108,379

(26,400)

Non-PEO NEO [Member] | Stock Award Values Reported in SCT for the Covered Year [Member]

Pay vs Performance Disclosure [Table]

Adjustment to Compensation Amount

(525,690)

(334,400)

(238,765)

Non-PEO NEO [Member] | Option Award Values Reported in SCT for the Covered Year [Member]

Pay vs Performance Disclosure [Table]

Adjustment to Compensation Amount

$ (228,750)

$ 194,973

$ (80,843)

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- Definition

The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

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