Jump to content

Flame Resistant Magnesium Alloys

Up to now, the applicability of magnesium alloys was limited due to its light flammability. Reason therefore is the oxidation tendency of the alloys. In a research project, LKR scientists managed it to develop magnesium alloys, which show the capability to self-extinguish in case of a fire.

  • Increased flammability resistance and good mechanical properties
  • Flammability resistance certified acc. to the Federal Aviation Administration
  • Remarkable cheaper than alloys with comparable flame resistance
  • Processability in various casting processes (e.g. high pressure die casting, Thixomolding)

before: magnesiumalloys AZ91 and AM60

three pictures side by side of the different firing phases of magnesium: glowing, smoking, burning

afterwards: addition of calcium and yttrium

Three pictures side by side trying to light fire-resistant magnesium: melts only slightly, does not start to burn


Passed flammability test according to FAA:

FAA Aircraft Materials Fire Test Handbook, Chapter 25; Oil Burner Flammability Test for Magnesium Alloy Seat Structure


table of certification
commercial airplane seats next to one another


  • Arm- and backrests of aircraft seats

  • Housings and covers of aircraft engines