Alloys or metallic compositions – Ferrous – 1.7 percent or more carbon containing
Reexamination Certificate
2005-03-15
2005-03-15
Yee, Deborah (Department: 1742)
Alloys or metallic compositions
Ferrous
1.7 percent or more carbon containing
C420S097000, C420S098000, C420S096000, C420S101000, C420S108000, C420S109000, C420S586100, C148S324000, C148S442000, C075S246000
Reexamination Certificate
active
06866816
ABSTRACT:
A unique austenitic iron base alloy for wear and corrosion resistant applications, characterized by its excellent sulfuric acid corrosion resistance and good sliding wear resistance, is useful for valve seat insert applications when corrosion resistance is required. The alloy comprises 0.7-2.4 wt % carbon, 1.5-4 wt % silicon, 3-9 wt % chromium, less than 6 wt % manganese, 5-20 wt % molybdenum and tungsten combined, with the tungsten comprising not more than ⅓ of the total, 0-4 wt % niobium and vanadium combined, 0-1.5 wt % titanium, 0.01-0.5 wt % aluminum, 12-25 wt % nickel, 0-3 wt % copper, and at least 45 wt % iron.
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U.S. Appl. No. 10/074,068, filed Feb. 12, 2002 entitled “A Wear Resistant Alloy Containing Residual Austenite for Valve Seat Insert”, 27 pages.
Liang Xuecheng
Strong Gary R.
Alloy Technology Solutions, Inc.
Shurtz Steven P.
Yee Deborah
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