Electrum


 * Electrum is a substance.

Electrum is a golden liquid with the special property of bonding to metal and rendering it virtually indestructible.

Liquid electrum is combustible, but it has a considerably higher spark-point than liquid energon — a stray blaster shot will not ignite it, but a direct high-power shot will.

Electrum-augmented Transformers turn a golden color.

Cartoon continuity
Beachcomber discovered an isolated 'lagoon' full of electrum in a natural preserve, which was promptly seized by the Decepticons. Megatron destroyed the electrum rather than let the Autobots have it.

Most Transformers were unfamiliar with electrum, and the scientist Starscream was apprehensive about its properties. Electrum seems to possess an almost 'mythical' status.