Acid resistant austenitic alloy for valve seat inserts
AssigneeWinsert, Inc.
InventorXuecheng Liang
Life of this patent
Estimating the term…
Abstract
A high-carbon austenitic iron-base alloy with good corrosion and wear resistance, particularly useful for valve seat insert applications when corrosion resistance is required, comprises about 1.8-3.5 wt % carbon, about 12-24 wt % chromium, about 0.5-4 wt % silicon, about 12-25 wt % nickel, about 2-12 wt % molybdenum and tungsten combined, about 0.05-4 wt % niobium and vanadium combined, about 0-1 wt % titanium, about 0.01-0.2 wt % aluminum, about 0.05-3 wt % copper, and less than 1.5 wt % manganese, with the balance being iron and a small amount of impurities.
Claims20
A homogeneous austenitic iron-base alloy with good corrosion and wear resistance, comprising:
- a) about 1.8 to about 3.5 wt % carbon;
- b) about 12 to about 24 wt % chromium;
- c) about 0.5 to about 4 wt % silicon;
- d) about 12 to about 25 wt % nickel;
- e) about 2 to about 16 wt % of tungsten and molybdenum combined;
- f) about 0.05 to about 4 wt % niobium and vanadium combined;
- g) about 0 to about 1 wt % titanium;
- h) about 0.01 to about 0.2 wt % aluminum;
- i) about 0.05 to about 3 wt % copper;
- j) less than about 1.5 wt % manganese;
- g) at least about 40% iron.
Dependencies are inferred from the claim text.