QT400 Ductile Iron: Properties, Uses, and Expert Insights
If you’re looking for a material that balances toughness, cost-effectiveness, and castability—for parts like engine blocks, manhole covers, or gear housings—QT400 ductile iron (also called nodular iron) is a game-changing choice. Unlike brittle gray iron, QT400’s graphite is spherical (thanks to magnesium additions), giving it steel-like ductility while retaining iron’s easy casting. But how does […]













