Aerospace Material Specification 5802 is a corrosion and heat resistant iron-nickel alloy in welding wire form.
Fe: 41% | Ni: 37.5% | Co: 14% | Cb: 4.8% | Ti: 1.5%
AMS 5802 is also known as Nickel 909 or Turbaloy 909.
Further reading: iron-nickel welding wire.
Further reading: WT 90 AMS 5829 welding wire.