Exhibit 31

                                  CERTIFICATION

I, Robert Koehler, certify that:

1.     I have reviewed this annual report on Form 20-F of SGL Carbon AG;

2.     Based on my knowledge, this report does not contain any untrue statement
       of a material fact or omit to state a material fact necessary to make the
       statements made, in light of the circumstances under which such
       statements were made, not misleading with respect to the period covered
       by this report;

3.     Based on my knowledge, the financial statements, and other financial
       information included in this report, fairly present in all material
       respects the financial condition, results of operations and cash flows of
       the company as of, and for, the periods presented in this report;

4.     The company's other certifying officer(s) and I are responsible for
       establishing and maintaining disclosure controls and procedures (as
       defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal
       control over financial reporting (as defined in Exchange Act Rules
       13a-15(f) and 15d-15(f)) for the company and have:

(a)    Designed such disclosure controls and procedures, or caused such
       disclosure controls and procedures to bedesigned under our supervision,
       to ensure that material information relating to the company, including
       itsconsolidated subsidiaries, is made known to us by others within those
       entities, particularly during the periodin which this report is being
       prepared;

(b)    Designed such internal control over financial reporting, or caused such
       internal control over financial reporting to be designed under our
       supervision, to provide reasonable assurance regarding the reliability of
       financial reporting and the preparation of financial statements for
       external purposes in accordance with generally accepted accounting
       principles;

(c)    Evaluated the effectiveness of the company's disclosure controls and
       procedures and presented in this report our conclusions about the
       effectiveness of the disclosure controls and procedures, as of the end of
       the period covered by this report based on such evaluation; and

(d)    Disclosed in this report any change in the company's internal control
       over financial reporting that occurred during the period covered by the
       annual report that has materially affected, or is reasonably likely to
       materially affect, the company's internal control over financial
       reporting; and

5.     The company's other certifying officer(s) and I have disclosed, based on
       our most recent evaluation of internal control over financial reporting,
       to the company's auditors and the audit committee of the company's board
       of directors (or persons performing the equivalent functions):

(a)    All significant deficiencies and material weaknesses in the design or
       operation of internal control over financial reporting which are
       reasonably likely to adversely affect the company's ability to record,
       process, summarize and report financial information; and

(b)    Any fraud, whether or not material, that involves management or other
       employees who have a significant role in the company's internal control
       over financial reporting.

Date: April 28, 2006

<TABLE>
<S>                                  <C>
                      /s/ Robert Koehler
     -----------------------------------
                          Robert Koehler
                 Chief Executive Officer
     Chairman of the Board of Management

</TABLE>

<PAGE>

                                    CERTIFICATION

    I, Sten Daugaard, certify that:

    1.     I have reviewed this annual report on Form 20-F of SGL Carbon AG;

    2.     Based on my knowledge, this report does not contain any untrue
           statement of a material fact or omit to state a material fact
           necessary to make the statements made, in light of the circumstances
           under which such statements were made, not misleading with respect to
           the period covered by this report;

    3.     Based on my knowledge, the financial statements, and other financial
           information included in this report, fairly present in all material
           respects the financial condition, results of operations and cash
           flows of the company as of, and for, the periods presented in this
           report;

    4.     The company's other certifying officer(s) and I are responsible for
           establishing and maintaining disclosure controls and procedures (as
           defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal
           control over financial reporting (as defined in Exchange Act Rules
           13a-15(f) and 15d- 15(f)) for the company and have:

    (a)    Designed such disclosure controls and procedures, or caused such
           disclosure controls and procedures to bedesigned under our
           supervision, to ensure that material information relating to the
           company, including itsconsolidated subsidiaries, is made known to us
           by others within those entities, particularly during the periodin
           which this report is being prepared;

    (b)    Designed such internal control over financial reporting, or caused
           such internal control over financial reporting to be designed under
           our supervision, to provide reasonable assurance regarding the
           reliability of financial reporting and the preparation of financial
           statements for external purposes in accordance with generally
           accepted accounting principles;

    (c)    Evaluated the effectiveness of the company's disclosure controls and
           procedures and presented in this report our conclusions about the
           effectiveness of the disclosure controls and procedures, as of the
           end of the period covered by this report based on such evaluation;
           and

    (d)    Disclosed in this report any change in the company's internal control
           over financial reporting that occurred during the period covered by
           the annual report that has materially affected, or is reasonably
           likely to materially affect, the company's internal control over
           financial reporting; and

    5.     The company's other certifying officer(s) and I have disclosed, based
           on our most recent evaluation of internal control over financial
           reporting, to the company's auditors and the audit committee of the
           company's board of directors (or persons performing the equivalent
           functions):

    (a)    All significant deficiencies and material weaknesses in the design or
           operation of internal control over financial reporting which are
           reasonably likely to adversely affect the company's ability to
           record, process, summarize and report financial information; and

    (b)    Any fraud, whether or not material, that involves management or other
           employees who have a significant role in the company's internal
           control over financial reporting.

    Date: April 28, 2006

<TABLE>
<S>                                <C>
                 by: /s/ Sten Daugaard
     ---------------------------------
                         Sten Daugaard
               Chief Financial Officer
     Member of the Board of Management

</TABLE>