C - Chemistry – Metallurgy – 21 – C
Patent
C - Chemistry, Metallurgy
21
C
53/35
C21C 7/00 (2006.01) C21C 1/10 (2006.01) C22C 37/00 (2006.01)
Patent
CA 1190400
-22- ABSTRACT OF THE DISCLOSURE A method is disclosed of making as-cast ductile iron wherein an iron melt having a chemistry capable of forming gray iron having flake graphite is treated with a nodularizing agent and solidified to provide a microstructure consisting substantially of a pearlite matrix containing uniformly distributed graphite nodules surrounded by ferrite. The iron melt is alloyed with: (a) at least one of .02-.06% Sb and .02-.08% Sn, (b) .001-.0015% each of Ce and La, and (c) .5-1.0% Mn.
399106
Ford Motor Company Of Canada Limited
Sim & Mcburney
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