1



                                                                    EXHIBIT 23.1






INDEPENDENT AUDITOR'S CONSENT


We consent to the incorporation by reference in Registration Statement No.
333-22977 of Quanex Corporation on Form S-8 of our report dated June 1, 1999,
appearing in the Annual Report of Form 11-K of the Piper Impact 401(k) Savings
Plan for the year ended December 31, 1998.


/s/ DELOITTE & TOUCHE LLP
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DELOITTE & TOUCHE LLP

Houston, Texas
June 28, 1999