Ultem for CNC Machining

What is Ultem?

ULTEM is a High performance thermoplastic, also known as PEI, or polyetherimide, and is usually transparent amber in colour. Due to its excellent strength and heat resistance, it is popular among Aerospace, Automotive and Medical industries.

At IPF Ultem would be put through an annealing process to remove any internal stresses, and reduce the risk of surface crazing. We then CNC machine to your specification using our high-speed 3 & 5 axis Milling machines, ideal for cutting reinforced materials.


  • Heat resistant
  • Chemical resistant
  • Impact resistant
  • Strong and durable
  • Flame retardant plastic
  • Excellent strength


  • Aerospace components
  • Automotive parts including housings, ducts and semi-structural components
  • Advanced functional prototypes
  • Medical instrument components
  • Electrical insulation parts
  • Production parts