This extraordinarily rare mineral is mined only on Tu’narath and other islands of matter floating in the Astral Plane. It is very similar to iron but has a single remarkable feature. Armour crafted from astral driftmetal is fully effective against incorporeal attacks, as if it were made of force. The armour’s full armour bonus to Armour Class (including any enhancement bonus) applies to the wearer’s touch Armour Class against incorporeal attacks.
Astral driftmetal is not malleable enough to be worked into chainmail or scale mail; only a breastplate, shield or any form of heavy armour can be made from it.
A suit of driftmetal armour weighs the same as a suit of armour made of steel. Other statistics of the armour (maximum Dexterity bonus, armour check penalty and arcane spell failure chance) are unchanged.
Astral driftmetal has hardness 12 and 30 hit points per inch of thickness.
| Type of Astral Driftmetal Item | Item Cost Modifier |
|---|---|
| Breastplate | +12,000 gp |
| Heavy Armour | +12,000 gp |
| Shield | +12,000 gp |
Source: Planar Handbook (Page 70)