Control of ductile iron through microexamination
American Foundrymen's Society, 1965 - Technology & Engineering - 12 pages
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_ 1 _ _ TENSILE 85 PER CENT ANNEALED F ANNEALED TENSILE PROPERTIES As-Casf Microsfrucfure ASTM Speciﬁcation BHN I nd BRINELL HARDNESS chart chemical analyses Committee 12-E COMPOSITION To PRODUcE Cr Cu Tc Donoho ferritic ductile iron ﬁeld GRAPHITE Fig graphite form graphite shape H E M I hardness reading I I I I I I inspection IOOO PSI iron castings keel block ladle treated magnesium Material speciﬁcations matrix means of acceptance Mg S P Cr microexamination microsample Mn Ni Mg percentage Phosphorus photomicrographs plotted poured Q CHEMISTRY Quality Control Committee requirements of ASTM sample shown in Figs silicon st Mn strength and elongation strength requirements STRENGTH VS AVE STRENGTH X IOOO sum of types T R Y T.S. Y.S. Elong tensile strength tensile test test bar tion TYPES I82 GRAPHITE yield strength