Cast alloys will continue to be a necessary part of chemical processing equipment into the next millennium and beyond. However, casting users need to understand that there are unique and intentional differences between cast and wrought alloys. Just because a wrought alloy exists doesn't mean that a complementary cast alloy can be easily produced. However, by understanding the issues involved and by having everyone - from wrought producers to the end-users - working in cooperation with the foundries, we can achieve the goal of good quality complementary cast alloys.