Is a casket required for cremation?
No, but a container of some kind is required. The minimum would be a cardboard box called an “alternative container”. The deceased is placed inside this container and placed into the crematory.
The options for a container range from the cardboard box (alternative container) to a traditional casket that is suitable for cremation. The material must be combustible with no metal parts.
You might find this article about rental caskets helpful as many families use this for the viewing and funeral service and then use an alternative container for the actual cremation process.