A quench and temper steel alloy is disclosed having the following composition in weight percent. C 0.2-0.5 Mn 0.1-1.0 Si 0.1-1.2 Cr   9-14.5 Ni 3.0-5.5 Mo 1-2 Cu   0-1.0 Co 1-4 W 0.2 max. V 0.1-1.0 Ti up to 0.5 Nb   0-0.5 Ta   0-0.5 Al   0-0.25 Ce   0-0.01 La   0-0.01 The balance of the alloy is iron and the usual impurities including not more than about 0.01% phosphorus, not more than about 0.010% sulfur, and not more than about 0.10% nitrogen. A quenched and tempered steel article made from this alloy is also disclosed. The steel article is characterized by a tensile strength of at least about 290 ksi, a fracture toughness (KIc) of at least about 65 ksi, good resistance to general corrosion, and good resistance to pitting corrosion.


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    Title :

    QUENCH AND TEMPER CORROSION RESISTANT STEEL ALLOY


    Contributors:

    Publication date :

    2017-01-05


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    C22C Legierungen , ALLOYS / B22F Verarbeiten von Metallpulver , WORKING METALLIC POWDER / B64C AEROPLANES , Flugzeuge / C21D Veränderung der physikalischen Struktur von Eisenmetallen , MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS



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