<PAGE>

                   SECURITIES AND EXCHANGE COMMISSION
                        WASHINGTON, D.C.  20549



                                FORM 8-K



                        Current Report Pursuant
                     to Section 13 or 15(d) of the
                    Securities Exchange Act of 1934



     Date of report (Date of earliest event reported)  October 1, 1997
                                                       -----------------


                          LINDBERG CORPORATION
   ---------------------------------------------------------------------
         (Exact Name of Registrant as Specified in Its Charter)


                                DELAWARE
   ---------------------------------------------------------------------
             (State or Other Jurisdiction of Incorporation)


           0-8287                              36-1391480
   ------------------------      ---------------------------------------
   (Commission File Number)       (I.R.S. Employer Identification No.)


   6133 North River Road, Suite 700, Rosemont, Illinois   60018
   ---------------------------------------------------------------------
      (Address of Principal Executive Offices)         (Zip Code)


                              (847) 823-2021
   ---------------------------------------------------------------------
         (Registrant's Telephone Number, Including Area Code)

<PAGE>

      Item 2:   Acquisition or Disposition of Assets

      Pursuant to  a  partnership agreement,  dated  July 1,  1994,  the
      registrant  held  a  50%  partnership  interest  in  a  California
      general partnership (the  "Partnership" ) engaged in the  business
      of  aluminum   and  titanium   heat  treating.     The   remaining
      partnership interests of  the Partnership  were held  respectively
      by  Aerospace  Aluminum   Heat  Treating  Company,  a   California
      corporation   ( "Aerospace"),  and  Alta  Canada  Corporation,   a
      California corporation ( "Alta", and collectively with  Aerospace,
      the  "Sellers" ).  On  October 1, 1997,  the registrant  purchased
      all the  partnership  interests of  the  Partnership held  by  the
      Sellers.  Immediately  upon the consummation  of the  transaction,
      the  registrant held  100%  of  the partnership  interest  in  the
      Partnership.   The registrant  paid $6.5  million in  cash to  the
      Sellers at  the closing  and delivered   promissory  notes in  the
      aggregate  principal  amount   of  $6.5   million.     Immediately
      following  the  closing   of  the   acquisition,  the   registrant
      contributed the assets and liabilities  of the partnership to  its
      wholly-owned limited liability  company, Alumatherm Heat  Treating
      Company,   L.L.C.,   a   Delaware   limited   liability    Company
      ( "Alumatherm").   Alumatherm intends to  use the acquired  assets
      in the same  manner as they  were used prior  to the  acquisition.
      The cash portion  of the funds paid  for the partnership  interest
      purchase  was  made  available   under  an  amended  bank   credit
      agreement  with  Bank  of  America  National  Trust  and   Savings
      Association.

                                  -2-

<PAGE>
                                  SIGNATURES



         Pursuant to  the requirements  of the  Securities Exchange  Act
   of 1934, the registrant  has duly caused this report to  be signed on
   its behalf by the undersigned hereunto duly authorized.



                                LINDBERG CORPORATION
                                ----------------------------------------
                                    (Registrant)



   Date  October 15, 1997         By     /s/Stephen S. Penley
         -----------------            ----------------------------------
                                  Stephen S. Penley
                                  Senior Vice President, Chief Financial
                                    Officer and Secretary       

                                  -3-

<PAGE>

                     LINDBERG CORPORATION FORM 8-K

                             Exhibit Index





   Number and Description of Exhibit
   ----------------------------------

     2.  Plan  of  acquisition,  reorganization,
         arrangement, liquidation or succession

         2.1  Partnership   Interest   Purchase
              Agreement, dated October 1, 1997,
              among    Lindberg    Corporation,
              Aerospace Heat  Treating Company,
              Alta   Canada   Corporation,  and
              California          Manufacturing
              Enterprises, Inc.                            attached

     4.   Instruments  defining  the  rights  of
          security holders, including indentures

          4.1 Third  Amendment  to Amended  and
              Restated Credit  Agreement, dated
              September 29, 1997                           attached

                                  -4-
[{"type": "8-K", "sequence": "1", "secsgml_size_bytes": 5028}]
{"company-data": {"conformed-name": "LINDBERG CORP /DE/", "cik": "0000059593", "assigned-sic": "3390", "irs-number": "361391480", "state-of-incorporation": "DE", "fiscal-year-end": "1231"}, "filing-values": {"form-type": "8-K", "act": "34", "file-number": "000-08287", "film-number": "97695672"}, "business-address": {"street1": "6133 N RIVER RD STE 700", "city": "ROSEMONT", "state": "IL", "zip": "60018", "phone": "7088232021"}, "mail-address": {"street1": "6133 N RIVER ROAD SUITE 700", "street2": "6133 N RIVER ROAD SUITE 700", "city": "ROSEMONT", "state": "IL", "zip": "60018"}}
SECURITIES AND EXCHANGE COMMISSION
                        WASHINGTON, D.C.  20549

                                FORM 8-K

                        Current Report Pursuant
                     to Section 13 or 15(d) of the
                    Securities Exchange Act of 1934

     Date of report (Date of earliest event reported)  October 1, 1997
                                                       -----------------

                          LINDBERG CORPORATION
   ---------------------------------------------------------------------
         (Exact Name of Registrant as Specified in Its Charter)

                                DELAWARE
   ---------------------------------------------------------------------
             (State or Other Jurisdiction of Incorporation)

           0-8287                              36-1391480
   ------------------------      ---------------------------------------
   (Commission File Number)       (I.R.S. Employer Identification No.)

   6133 North River Road, Suite 700, Rosemont, Illinois   60018
   ---------------------------------------------------------------------
      (Address of Principal Executive Offices)         (Zip Code)

                              (847) 823-2021
   ---------------------------------------------------------------------
         (Registrant's Telephone Number, Including Area Code)
Item 2:   Acquisition or Disposition of Assets

      Pursuant to  a  partnership agreement,  dated  July 1,  1994,  the
      registrant  held  a  50%  partnership  interest  in  a  California
      general partnership (the  "Partnership" ) engaged in the  business
      of  aluminum   and  titanium   heat  treating.     The   remaining
      partnership interests of  the Partnership  were held  respectively
      by  Aerospace  Aluminum   Heat  Treating  Company,  a   California
      corporation   ( "Aerospace"),  and  Alta  Canada  Corporation,   a
      California corporation ( "Alta", and collectively with  Aerospace,
      the  "Sellers" ).  On  October 1, 1997,  the registrant  purchased
      all the  partnership  interests of  the  Partnership held  by  the
      Sellers.  Immediately  upon the consummation  of the  transaction,
      the  registrant held  100%  of  the partnership  interest  in  the
      Partnership.   The registrant  paid $6.5  million in  cash to  the
      Sellers at  the closing  and delivered   promissory  notes in  the
      aggregate  principal  amount   of  $6.5   million.     Immediately
      following  the  closing   of  the   acquisition,  the   registrant
      contributed the assets and liabilities  of the partnership to  its
      wholly-owned limited liability  company, Alumatherm Heat  Treating
      Company,   L.L.C.,   a   Delaware   limited   liability    Company
      ( "Alumatherm").   Alumatherm intends to  use the acquired  assets
      in the same  manner as they  were used prior  to the  acquisition.
      The cash portion  of the funds paid  for the partnership  interest
      purchase  was  made  available   under  an  amended  bank   credit
      agreement  with  Bank  of  America  National  Trust  and   Savings
      Association.

                                  -2-
SIGNATURES

         Pursuant to  the requirements  of the  Securities Exchange  Act
   of 1934, the registrant  has duly caused this report to  be signed on
   its behalf by the undersigned hereunto duly authorized.

                                LINDBERG CORPORATION
                                ----------------------------------------
                                    (Registrant)

   Date  October 15, 1997         By     /s/Stephen S. Penley
         -----------------            ----------------------------------
                                  Stephen S. Penley
                                  Senior Vice President, Chief Financial
                                    Officer and Secretary       

                                  -3-
LINDBERG CORPORATION FORM 8-K

                             Exhibit Index

   Number and Description of Exhibit
   ----------------------------------

     2.  Plan  of  acquisition,  reorganization,
         arrangement, liquidation or succession

         2.1  Partnership   Interest   Purchase
              Agreement, dated October 1, 1997,
              among    Lindberg    Corporation,
              Aerospace Heat  Treating Company,
              Alta   Canada   Corporation,  and
              California          Manufacturing
              Enterprises, Inc.                            attached

     4.   Instruments  defining  the  rights  of
          security holders, including indentures

          4.1 Third  Amendment  to Amended  and
              Restated Credit  Agreement, dated
              September 29, 1997                           attached

                                  -4-