It just popped into my head that, aside from malatium, we have no clue what the other alloys of atium do. I will now propose a list of what I think they should do, going on the assumption that a metal's atium alloy has a similar, yet different, effect (like malatium and gold).
Here goes...
Atium+Iron: Lets you decrease the temperature of nearby metals
Atium+Steel: Lets you increase the temperature of nearby metals
Atium+Tin: Lets you enhance other peoples' senses
Atium+Pewter: Lets you increase other peoples' strength
Atium+Zinc: Lets you feel when someone is experiencing a strong emotion (but not which one)
Atium+Brass: Lets you feel the general emotion of the area, but not individual people
Atium+Copper: Gives off confusing bronze pulses (very annoying to seekers)
Atium+Bronze: Destroys copperclouds
Atium+Gold: Already confirmed (see malatium)
Atium+Electrum: Lets you see other people's futures
Atium+Cadmium: Makes you move slowly through time (like a personalized cadmium bubble)
Atium+Bendalloy: Makes you move quickly through time (like a personalized bendalloy bubble)
Atium+Aluminum: Makes any metal you're burning do what its atium alloy would do (or for atium alloys, what the metal it's made from does)
Atium+Duralumin: Makes any metal you're burning do what it's paired metal does (steel turns to iron, etc.)
Atium+Chromium: Makes any metal another person is burning do what its atium alloy would do (or for atium alloys, what the metal it's made from does)
Atium+Nicrosil: Makes any metal another person is burning do what it's paired metal does (steel turns to iron, etc.)
Any body have any other ideas?
And another thing– names for each alloy. The only idea I have so far is Cupratium for copper+atium.