SECURITIES AND EXCHANGE COMMISSION
                              WASHINGTON, DC 20549

                                  ------------

                                  SCHEDULE 13G
                                (RULE 13D - 102)

                    INFORMATION TO BE INCLUDED IN STATEMENTS
                     PURSUANT TO RULES 13D-1(B) AND (C) AND
                   AMENDMENTS THERETO FILED PURSUANT TO 13D-2

                                (AMENDMENT NO. )*

                               QUANEX CORPORATION
- --------------------------------------------------------------------------------
                                (Name of Issuer)

                                     COMMON

- --------------------------------------------------------------------------------
                         (Title of Class of Securities)

                                   747620102
- --------------------------------------------------------------------------------
                                 (CUSIP Number)


                          ---------------------------


            *The  remainder  of  this  cover  page  shall  be  filled  out for a
reporting person's initial filing on this form with respect to the subject class
of securities,  and for any subsequent  amendment  containing  information which
would alter the disclosures provided in a prior cover page.

            The  information  required in the remainder of this cover page shall
not be deemed to be "filed"  for the  purpose  of  Section 18 of the  Securities
Exchange Act of 1934 or otherwise  subject to the liabilities of that section of
the Act but shall be subject to all other  provisions of the Act  (however,  SEE
the NOTES).











===========================                         ============================
CUSIP  NO. 747620102                     13G             PAGE  2   OF   10 PAGES
===========================                         ============================




- --------------------------------------------------------------------------------
1       NAMES OF REPORTING PERSONS
        I.R.S. IDENTIFICATIONS NOS. OF ABOVE PERSONS

        Forest Investment Management LLC

- --------------------------------------------------------------------------------
2       CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*         (a)  [   ]
                                                                  (b)  [   ]


- --------------------------------------------------------------------------------
3       SEC USE ONLY


- --------------------------------------------------------------------------------
4       CITIZENSHIP OR PLACE OF ORGANIZATION

        Delaware
- --------------------------------------------------------------------------------

                  5     SOLE VOTING POWER
    NUMBER OF           791,364
     SHARES       --------------------------------------------------------------
  BENEFICIALLY    6     SHARED VOTING POWER
    OWNED BY            zero
      EACH        --------------------------------------------------------------
    REPORTING     7     SOLE DISPOSITIVE POWER
   PERSON WITH          791,364
                  --------------------------------------------------------------
                  8     SHARED DISPOSITIVE POWER
                        zero

- --------------------------------------------------------------------------------
9       AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
          791,364

- --------------------------------------------------------------------------------
10      CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES
        CERTAIN SHARES*                                                 |_|


- --------------------------------------------------------------------------------
11      PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)


         5.31%
- --------------------------------------------------------------------------------
12      TYPE OF REPORTING PERSON*

        IA

- --------------------------------------------------------------------------------
                      *SEE INSTRUCTIONS BEFORE FILLING OUT!







===========================                         ============================
CUSIP  NO. 747620102                    13G             PAGE  3   OF   10 PAGES
===========================                         ============================




- --------------------------------------------------------------------------------
1       NAMES OF REPORTING PERSONS
        I.R.S. IDENTIFICATIONS NOS. OF ABOVE PERSONS

        Founders Financial Group L.P.

- --------------------------------------------------------------------------------
2       CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*         (a)  [   ]
                                                                  (b)  [   ]


- --------------------------------------------------------------------------------
3       SEC USE ONLY


- --------------------------------------------------------------------------------
4       CITIZENSHIP OR PLACE OF ORGANIZATION

        Delaware
- --------------------------------------------------------------------------------

                  5     SOLE VOTING POWER
    NUMBER OF           791,364
     SHARES       --------------------------------------------------------------
  BENEFICIALLY    6     SHARED VOTING POWER
    OWNED BY            zero
      EACH        --------------------------------------------------------------
    REPORTING     7     SOLE DISPOSITIVE POWER
   PERSON WITH          791,364
                  --------------------------------------------------------------
                  8     SHARED DISPOSITIVE POWER
                        zero

- --------------------------------------------------------------------------------
9       AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
        791,364

- --------------------------------------------------------------------------------
10      CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES
        CERTAIN SHARES*                                                 |_|


- --------------------------------------------------------------------------------
11      PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)


        5.31%
- --------------------------------------------------------------------------------
12      TYPE OF REPORTING PERSON*

        PN

- --------------------------------------------------------------------------------
                      *SEE INSTRUCTIONS BEFORE FILLING OUT!







===========================                         ============================
CUSIP  NO. 747620102                    13G             PAGE  4   OF   10 PAGES
===========================                         ============================



- --------------------------------------------------------------------------------
1       NAMES OF REPORTING PERSONS
        I.R.S. IDENTIFICATIONS NOS. OF ABOVE PERSONS

        Michael A. Boyd, Inc.
- --------------------------------------------------------------------------------
2       CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*          (a)  [   ]
                                                                   (b)  [   ]


- --------------------------------------------------------------------------------
3       SEC USE ONLY


- --------------------------------------------------------------------------------
4       CITIZENSHIP OR PLACE OF ORGANIZATION

        Connecticut
- --------------------------------------------------------------------------------

                  5     SOLE VOTING POWER
    NUMBER OF           791,364
     SHARES       --------------------------------------------------------------
  BENEFICIALLY    6     SHARED VOTING POWER
    OWNED BY            zero
      EACH        --------------------------------------------------------------
    REPORTING     7     SOLE DISPOSITIVE POWER
   PERSON WITH          791,364
                  --------------------------------------------------------------
                  8     SHARED DISPOSITIVE POWER
                        zero

- --------------------------------------------------------------------------------
9       AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
        791,364

- --------------------------------------------------------------------------------
10      CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES
        CERTAIN SHARES*                                                 |_|


- --------------------------------------------------------------------------------
11      PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)


        5.31%
- --------------------------------------------------------------------------------
12      TYPE OF REPORTING PERSON*

        CO

- --------------------------------------------------------------------------------
                      *SEE INSTRUCTIONS BEFORE FILLING OUT!








===========================                         ============================
CUSIP  NO. 747620102                    13G             PAGE  5   OF   10 PAGES
===========================                         ============================



- --------------------------------------------------------------------------------
1       NAMES OF REPORTING PERSONS
        I.R.S. IDENTIFICATIONS NOS. OF ABOVE PERSONS

        Michael A. Boyd

- --------------------------------------------------------------------------------
2       CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*          (a)  [   ]
                                                                   (b)  [   ]


- --------------------------------------------------------------------------------
3       SEC USE ONLY


- --------------------------------------------------------------------------------
4       CITIZENSHIP OR PLACE OF ORGANIZATION

        United States
- --------------------------------------------------------------------------------

                  5     SOLE VOTING POWER
    NUMBER OF           791,364
     SHARES       --------------------------------------------------------------
  BENEFICIALLY    6     SHARED VOTING POWER
    OWNED BY            zero
      EACH        --------------------------------------------------------------
    REPORTING     7     SOLE DISPOSITIVE POWER
   PERSON WITH          791,364
                 ---------------------------------------------------------------
                  8     SHARED DISPOSITIVE POWER
                        zero

- --------------------------------------------------------------------------------
9       AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
        791,364

- --------------------------------------------------------------------------------
10      CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES
        CERTAIN SHARES*                                                 |_|


- --------------------------------------------------------------------------------
11      PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)


        5.31%
- --------------------------------------------------------------------------------
12      TYPE OF REPORTING PERSON*

        IN

- --------------------------------------------------------------------------------
                      *SEE INSTRUCTIONS BEFORE FILLING OUT!








===========================                         ============================
CUSIP  NO. 747620102                    13G             PAGE  6   OF   10 PAGES
===========================                         ============================




Item 1.
            (A)  NAME OF ISSUER.

            QUANEX CORPORATION (the "Issuer").

            (B)  ADDRESS OF ISSUER'S PRINCIPAL EXECUTIVE OFFICES.

            The Issuer's principal executive offices are located  at  1900  West
Loop South, Suite 1500, Houston, Texas 77027.

ITEM 2.

            (A) NAMES OF PERSONS FILING.

            This  statement  is  filed  by  the  following  persons:  (a) Forest
Investment Management LLC, an Investment Advisor registered under the Investment
Advisors Act of 1940, as amended  ("Forest"),  (b) Founders Financial Group L.P.
("Founders"),  in its capacity as the owner of a controlling interest in Forest,
(c) Michael A. Boyd, Inc. ("MAB,  Inc."), in its capacity as the general partner
of Founders  and (d) Michael A. Boyd ("Mr.  Boyd"),  in his capacity as the sole
director and shareholder of MAB, Inc., (collectively, the "Filing Parties").

            (B)  ADDRESS OF PRINCIPAL BUSINESS OFFICE.

            The principal  business  office of each of the Filing  Parties is 53
Forest Avenue, Old Greenwich, Connecticut 06870.











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CUSIP  NO. 747620102                    13G             PAGE  7   OF   10 PAGES
===========================                         ============================



            (C)  CITIZENSHIP.

            Forest  is  a  Delaware  Limited  Liability  Company.  Founders is a
Delaware limited partnership.  MAB, Inc. is a Connecticut corporation.  Mr. Boyd
is a United States citizen.

            (D) TITLE OF CLASS OF SECURITIES.

            This  statement  relates to shares of  Common Stock,  par value $.50
per share (the "Common Stock"), of the Issuer.

            (E)  CUSIP NUMBER.

             747620102

ITEM 3.     This statement is being filed pursuant to Rule 13d-1(b).

            (a)  |_|    Broker or dealer registered under Section 15 of the Act,

            (b)  |_|    Bank as defined in Section 3(a)(6) of the Act,

            (c)  |_|    Insurance Company as defined in Section 3(a)(19) of  the
                        Act,

            (d)  |_|    Investment  Company  registered  under  Section 8 of the
                        Investment Company Act,

            (e)  |X|    Investment Adviser registered under Section 203 of
                        the Investment Advisers Act of 1940,

            (f)  |_|    Employee  Benefit  Plan,  Pension  Fund which is subject
                        to the  provisions  of the  Employee  Retirement  Income
                        Security   Act  of   1974   or   Endowment   Fund;   SEE
                        13d-1(b)(1)(ii)(F),

            (g)  |_|    Parent Holding Company, in accordance with Rule 13d-1(b)
                        (ii)(G); SEE Item 7,










===========================                         ============================
CUSIP  NO. 747620102                    13G             PAGE  8   OF   10 PAGES
===========================                         ============================




            (h)  |_|    Group, in accordance with Rule 13d-1(b)(1)(ii)(H).

ITEM 4.     OWNERSHIP.

            (A)   AMOUNT BENEFICIALLY OWNED.

            Each  of  Forest, Founders, MAB, Inc. and Mr. Boyd beneficially owns
            791,364 shares of Issuer's Common Stock.

            (B)   PERCENT OF CLASS.

            Each  of  Forest, Founders, MAB, Inc. and Mr. Boyd owns 5.31% of the
            Issuer's Common Stock.

            (C)   POWER  TO  VOTE  OR  DIRECT THE VOTE AND DISPOSE OR DIRECT THE
DISPOSITION OF SECURITIES.

                  Each  of  Forest,  Founders,  MAB,  Inc. and Mr. Boyd has sole
power to vote or dispose or to direct the  vote  or disposition of the shares of
Common Stock.

ITEM 5.     OWNERSHIP OF FIVE PERCENT OR LESS OF A CLASS.

            If this  statement  is being filed to report the fact that as of the
date hereof the reporting  person has ceased to be the beneficial  owner of more
than five percent of the class of securities, check the following [ ]

ITEM 6.     OWNERSHIP OF MORE THAN FIVE PERCENT ON BEHALF OF ANOTHER PERSON.

            Not applicable.

ITEM 7.     IDENTIFICATION AND CLASSIFICATION OF THE SUBSIDIARY  WHICH  ACQUIRED
            THE SECURITY BEING REPORTED ON BY THE PARENT HOLDING COMPANY.







===========================                         ============================
CUSIP  NO. 747620102                    13G             PAGE  9   OF   10 PAGES
===========================                         ============================




            Not applicable.

ITEM 8.     IDENTIFICATION AND CLASSIFICATION OF MEMBERS OF THE GROUP.

            Not applicable.

ITEM 9.     NOTICE OF DISSOLUTION OF GROUP.

            Not applicable.

ITEM 10.    CERTIFICATION.

            Not applicable.


                            [SIGNATURES ON NEXT PAGE]












===========================                         ============================
CUSIP  NO. 747620102                    13G             PAGE  10   OF   10 PAGES
===========================                         ============================




                                    SIGNATURE

            After reasonable inquiry and to the best knowledge and belief of the
undersigned,  the  undersigned  certify that the  information  set forth in this
statement is true, complete and correct.


                                    FOREST INVESTMENT MANAGEMENT LLC



Dated:  February 17,  1998          By:  /S/ MICHAEL A. BOYD
                                       -----------------------------------------
                                       Michael A. Boyd, Chairman


                                    FOUNDERS FINANCIAL GROUP, L.P.



Dated:  February 17,  1998          By: /S/ MICHAEL A. BOYD
                                       -----------------------------------------
                                       Michael A. Boyd, Chairman


                                    MICHAEL A. BOYD, INC.



Dated:  February 17,  1998          By:   /S/ MICHAEL A. BOYD
                                        ----------------------------------------
                                        Name: Michael A. Boyd
                                        Title:  President


                                     MICHAEL A. BOYD



Dated:  February 17,  1998           By:   /S/ MICHAEL A. BOYD
                                        ----------------------------------------
                                        Name: Michael A. Boyd