Abstract: An improved cast grate cooler side plate having a bottom surface containing a metal alloy insert embedded therein wherein said insert is formed from an alloy selected from the group consisting of:A. an alloy consisting essentially of, by weight,______________________________________ Carbon about 1.5-3% Chromium about 23-30% Manganese <2.5% Silicon <2.5% Nickel up to about 3% Molybdenum up to about 3% Iron essentially the balance ______________________________________B. an alloy consisting essentially of, by weight, ______________________________________ Carbon about 2.5-3.6% Chromium about 1.4-3.5% Manganese about 0.4-0.7% Silicon about 0.4-0.7% Nickel about 4.0-4.75% Iron essentially the balance ______________________________________andC. an alloy consisting essentially of, by weight, ______________________________________ Carbon about 0.25-1.6% Chromium about 3-12% Manganese <1.5% Silicon <1.5% Molybdenum <2% Vanadium <1.

Abstract: An improved link for a grate conveyor or the like, which is an elongate casting having at a first end thereof a pair of transversely spaced side walls and at the other or second end thereof a lug having a width generally corresponding to the width of the space between said walls and extending out endwise at said second end. The lug is adapted to fit between the spaced side walls of the next link in a series of links making up the chain. The side walls have aligned holes therein of circular cross section coaxial on a first axis extending transversely of the link adjacent its first end. The lug also has a hole therein of circular cross section on a second axis extending transversely of the link adjacent its second end wherein the second axis is parallel to the first axis.

Abstract: Heat resistant alloys which have excellent abrasion resistance in the 1200.degree. to 1400.degree. F. (650.degree. to 760.degree. C.) temperature range and good resistance to hot gas corrosion resistance to about 1600.degree. F. (870.degree. c.), consisting essentially of:______________________________________ CHROMIUM 11-20% BY WEIGHT NICKEL 3-10.5% MOLYBDENUM 1-4% ALUMINUM 0.25%-1.5% CARBON 2-4.5% NITROGEN UP TO 0.25% SILICON UP TO 2.5% COPPER UP TO 4% COBALT UP TO 4% MANGANESE UP TO 4% COPPER + COBALT UP TO 4% TOTAL COPPER + COBALT + UP TO 5% TOTAL MANGANESE IRON & IMPURITIES ESSENTIALLY BALANCE provided that NICKEL + COPPER + 6 TO 11.5% COBALT is 6 TO 12.