© Jeffrey J Wolynski

The names of some iron/nickel alloys is recorded on wikipedia in good order. We can use this information without any sort of prejudice.

 

Antitaenite	A native metal found in meteorites.	Fe3Ni[4]
Austenite	A special allotrope of steel that is stabilized with nickel.
Awaruite	A native metal found in serpentinites and meteorites.	Ni2Fe to Ni3Fe
Earth's core	Earth's core is composed of an iron–nickel alloy.	about 5.5%[5]
Elinvar	A steel which's elasticity doesn't change with temperature.	36% (also 5% chromium)
Invar	A steel with very low thermal expansion.	36%
Kamacite	A native metal found in meteoric iron	Fe0.9Ni0.1
Maraging steel	A strong, malleable variant of steel	15 to 25%
Meteoric iron	A combination of mostly kamacite and taenite and minor amounts of tetrataenite, antitaenite and awaruite.	5–30%
Mu-metal	A metal with high magnetic permeability.	77%
Planetary core	Planets, Moons and Planetesimals also can have cores made of an iron–nickel alloy.	Various
Taenite	A native metal found in meteorites	NiFe
Telluric iron	A native metal found on earth (not extraterrestrial)	Fe (but 0.05 to 4% nickel)
Tetrataenite	A native metal found in meteorites.	FeNi

 

As we can see there is a lot to this. I will have to study these alloys more in depth as I continue theory development. The important of understanding the composition of this very important alloy is threefold.

1. This alloy is what constitutes the cores of ancient stars.
2. Ancient stars do eventually disintegrate over many billions of years of galactic wandering, thus meteorites as they are known are literally the hearts of ancient stars. Their cores will show as they are shredded apart and impact other ancient dead stars, leaving very large fields of shrapnel. For those people who are sharp, this understanding means that the term "falling stars" is actually true. Meteorites that burn up in the high atmosphere are pieces to the hearts of ancient dead stars that have disintegrated. 
3. Understanding what elements are in the cores of stars gives room to understand which elements a star differentiates first as it dies and undergoes evolution. Essentially we can reverse engineer a star by studying the Earth itself. We can know what is inside all evolving stars such as Jupiter, Neptune, Uranus, Saturn, the Sun by studying meteorites.