Ferrum Caeleste

Mythological · Legendary · Ancient

Roman priests of Vulcan described a celestial iron said to fall from Jupiter's domain in the form of sacred meteorites. Unlike common meteoric iron, ferrum caeleste was believed to be deliberately cast down by the gods as gifts to chosen smiths.

Identity

Source
Roman mythology
Aliases
Celestial iron, Fer du ciel, Divine iron

Physical Properties

Appearance
White-gold luminosity with faint star-like sparks visible within the metal grain at certain angles
Luster
Metallic
Density
9.5 g/cm³
Melting point
3800 °C
Boiling point
7000 °C
Lighter
Vibranium
Denser
Bismuth
Magnetism
Ferromagnetic
Electrical conductivity
High

Mechanical Properties

Mohs hardness
9
Tensile strength
2800 MPa
Softer
Chromium
Harder
Divine Bronze of Hephaestus
Workability
Difficult
Brittleness
Tough
Malleability
Moderate
Ductility
Moderate

Chemical Properties

Corrosion resistance
absolute
Reactivity
none

Lore & Narrative

The Ancile, the sacred shield of Mars that fell from heaven into the reign of Numa Pompilius, was believed to be fashioned from ferrum caeleste. The Romans made eleven copies of it; if the original were ever lost among the copies, the protection of Rome would be destroyed.

Notable uses
Divine shields, sacred weapons of generals, temple offerings
Forge uses
divine shields, sacred weapons
Worldbuilding traits
divine, roman, meteoric, protective

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