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love6351(½ð±Ò+5,VIP+0):thanks for the valuable information 8-24 15:05
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Austempered ductile iron (Fe-3.6%C-2.5%Si-0.056%P-0.052%Mg-0.7%Cu). Martensite and
acicular ferrite. The casting was austempered at 900 ¡ãC (1650 ¡ãF), held 2 h, taken to salt bath at 360 ¡ãC
(680 ¡ãF), held 2 min, and air cooled. Etched with 4% nital. 1000¡Á

[ Last edited by comma on 2009-8-24 at 10:17 ]
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