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 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 be designed under our
              supervision, to ensure that material information relating to the
              company, including its consolidated subsidiaries, is made known to
              us by others within those entities, particularly during the period
              in 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 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.


                                                              /s/ Robert Koehler
                                                              ------------------
                                                                  Robert Koehler

                                                         Chief Executive Officer

                                             Chairman of the Board of Management

Date: June 27, 2007


<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 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 be designed under our
              supervision, to ensure that material information relating to the
              company, including its consolidated subsidiaries, is made known to
              us by others within those entities, particularly during the period
              in 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 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.


                                                               /s/ Sten Daugaard
                                                              ------------------
                                                                   Sten Daugaard

                                                         Chief Financial Officer

                                               Member of the Board of Management


Date: June 27, 2007