“How does the powder coating process affect the material properties of cast ductile iron? I understand that during the process of powder coating the temperature reaches up to 400 degrees F. Does this cause the material properties of cast ductile iron to become brittle?”
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“The cure temperature of 400 F has only one effect on ductile iron…the release of entrapped gasses. The cast ductile iron does not become brittle since the part is at temperature for a relatively short time (15 to 30 minutes). Furthermore, higher temperatures are required to cause problems with Ductile or any other cast iron.”
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