Gray Iron was the original “cast iron”. It is relatively easy and inexpensive to make. Compared to the more modern engineered irons Gray Iron has a lower tensile strength and lower ductility. In other words it will fail more easily, and its mode of failure will be sudden fracture (it will not bend).
Bowmanville Foundry produces 3 grades of Gray Iron, each exhibiting varying degrees of machinability and strength
Gray iron is typically used for housings where tensile strength is non critical. Engine blocks, pump housings, valve bodies, electrical boxes, decorative castings are typical applications.
The Bowmanville Foundry has extensive experience in producing Malleable Iron, Ductile Iron, Austempered Ductile Iron (ADI), Gray Iron, and Wear Resistant Irons, and can recommend the appropriate material for your application.