METHOD OF HEAT TREATING A DUCTILE AUSTENITIC DUCTILE IRON CASTING INCLUDING REFRIGERATION TREATMENT AND ARTICLE PRODUCED THEREBY
United States Patent 3485683

Inventors:
Schelleng, Robert D.
Kies, Frederick K.
Publication Date:
12/23/1969
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Assignee:
INT NICKEL CO
Primary Class:
148/503
Other Classes:
148/502, 148/331, 148/324, 148/578, 148/618
International Classes:
C22C37/04; C22C37/00; C21D1/26; C22C41/02; C22C41/04




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