Document VjKjXm1wKJo6rRdEOx3b6nr7q

ALCOA MATERIALS AND STANDARDS SECTION PITTSBURGH IDENTIFICATION MARKING OF MATERIALS ENGINEERING STANDARD 45.10.1 FEBRUARY, 1965 Pag* 2 TABLE 1 IDENTIFICATION CODE FOR SUPPLIERS Code Letter Supplier DD Alco Products EE Ajax Steel & Forge Company G Allegheny-Ludlum Steel Corporation FF American Forge and Mfg. Company E Bethlehem Steel Company I Braeburn Alloy Steel Corporation KK Cameron Tool & Supply Company K Carpenter Steel Company OO Champion Steel Company H Columbia Tool Steel Company HH Composite Forgings Company LL Copperweld Steel Company X Crucible Steel Company of America AA A. Finkl & Sons Company B Firth Sterling, Incorporated GG Green River Steel Company BB Heppenstall Company W Jessop Steel Company F Latrobe Steel Company II Mclnnes Steel Company L Mldvale-Heppenstall Company O A. Milne, Incorporated D Universal-Cyclop Steel Corporation A Vanadium Alloys Steel Company P Vulcan-Kidd - Div of H. K. Porter Co ARD 011870