Almost any plastic or metal can be manufactured by CNC machining. It means that it is a challenging work to find the exact material that meets all requirements for your product development. Here are 3 general rules, which may help you get the best option.
The flammability UL 94 rating is the most widely used flammability standard for plastic materials. Many values can be obtained from each material under test due to different color and thickness. The UL rating should be reported along with the material thickness and color, and reporting only the UL rating without thickness and color is not feasible.