I've gotten a little OCD over the table of late, and feel I must post what I've worked out about the feruchemical and hemallurgical properties of the metals.
so here goes.
I'll start with an index of metals. Adjusted as little as possible from the Table of Allomantic metals posted and what has been figured out.
1. Iron External Physical Pulling Metal
2. Steel External Physical Pushing Metal
3. Tin Internal Physical Pulling Metal
4. Pewter Internal Physical Pushing Metal
5. Zinc External Mental Pulling Metal
6. Brass External Mental Pushing Metal
7. Copper Internal Mental Pulling Metal
8. Bronze Internal Mental Pushing Metal
9. Chromium External Enhancement Pulling Metal
10. Nicrosil External Enhancement Pushing Metal
11. Aluminum Internal Enhancement Pulling Metal
12. Duralumin Internal Enhancement Pushing Metal
13. Cadmium External Temporal Pulling Metal
14. Bendalloy External Temporal Pushing Metal
15. Gold Internal Temporal Pulling Metal
16. Electrum Internal Temporal Pushing Metal
17. Atium Ruin God Metal
18. Lerasium Preservation God Metal
Simple, arranged and patterns are clearly noticeable
ok, onto feruchemy and hemalurgy
Allomantic Power Feruchemical Power Hemallurgical Power
Push/Pull Store Steal
1. Iron Pull Metals Store Physical Weight Steal Human Strength (Potency)**
2. Steel Push Metals Store Physical Speed Steal Allomantic Physical Powers
3. Tin Pull Body (senses) Store Physical Senses Steal Human Senses (Awareness)**
4. Pewter Push Body (strength, etc.) Store Physical Strength Steal Feruchemical Physical Powers
5. Zinc Pull Emotions (Riot) Store Mental Speed Steal Human Emotional Fortitude (Stability)**
6. Brass Push Emotions (Soothe) Store Warmth Steal Feruchemical Mental Powers
7. Copper Pull Allomantic Pulses Store Memories Steal Human Mental Fortitude (Presence)**
8. Bronze Push Allomantic Pulses Store Wakefulness Steal Allomantic Mental Powers
9. Chromium* Pull External Allomantic Metals* Store Neg. Emotions** Steal Feruchemical Enhancement Powers**
10. Nicrosil* Push External Allomantic Metals* Store Positive Emotions** Steal Human Virility**
11. Aluminum Pull Internal Allomantic Metals Store Pain** Steal Allomantic Enhancement Powers
12. Duralumin Push Internal Allomantic Metals Store Virility** Steal Human Charisma**
13. Cadmium* Pull External Time* Store Youth** Steal Human Longevity**
14. Bendalloy* Push External Time* Store Age** Steal Allomantic Temporal Powers**
15. Gold Pull Internal Time Store Health Steal Feruchemical Temporal Powers**
16. Electrum Push Internal Time Store Beauty** Steal Human Beauty**
17. Atium Foresight*** Store Any Feruchemical Charge** Steal Any Allomantic Power*
18. Lerasium* Allomancy* Store Any Allomantic Power** Steal Any Feruchemical Power**
* Modified Since Hero of Ages (not canon yet)
** My own modifications based on observed patterns in the metals (not canon)
*** I believe these are incomplete or inaccurate based on observed patterns (not canon)
for the feruchemical stuff, I believe one of the temporal metals should store age (Cadmium or Bendalloy) And Atium store any feruchemical charge. This makes sense in my mind, but may not be canonically correct.
Also... Adding 2 spikes of the same allomantic charge to a person, when placed correctly should grant Allomantic Savanthood... savvy?
Also also, (teehee) The most powerful Inquisitor would probably have 8 steel spikes, 4 Pewter Spikes, 1 or 2 iron spikes, 5 tin spikes (1 for each type of sense), 1 or 2 zinc spikes, 4 brass spikes, 1 or 2 copper spikes, 8 bronze spikes, 4 chromium spikes, 1 or 2 nicrosil spikes, 8 aluminum spikes, 1 or 2 Duralumin spikes, 1or 2 cadmium spikes, 8 bendalloy spikes, 4 gold spikes, 1 to 2 electrum spikes, and 1 atium spike. or just simplify it to 34 atium spikes, 16 lerasium spikes and 5 tin spikes. so... 55 or 61-68 spikes. Whew, that's a lot of math that doesn't matter at all.
Also also also, (yes, I'm tired and laughing at my own jokes right now) I am one of those who holds with the Atium-Electrum Theory and based on the patterns I've worked out on the table I think Pure Atium should grant Feruchemical Powers. Probably wrong about everything here, but hey, whatever.
Which brings up a theory I just thought up. In the deleted chapters about the Well of Ascension in WoA there is a lake nearby the mountain where the Well is. It reminded me of the lake in Elantris, which is directly related to a shard. I propose this lake was atium. If this lake sunk into the ground, perhaps it became what is now the Pits of Hathsin. Also, if that area of the ground was rich in gold and silver, there is no doubt the atium produced there would be sullied with electrum. This could also explain how feruchemists came to be in the first place. Someone drank from the atium lake while it was still pure, instinctively burned it and got feruchemy. Of course, this only holds water if atium does indeed grant feruchemical powers.
In any case, feel free to dissect my list, insult my intelligence or ponder in quiet solitude. If anyone wants to make modifications, I'd love to hear about them, because this stuff is fascinating to me. (obviously.)
So,.... I'm tired. Think I'll go lie on my bed thinking of this all night. /sigh. Stupid insomnia
I'll probably modify this once I figure out what types of metal were used in the spikes for koloss and kandra.
EDIT: half of that is done.
EDIT: koloss are made with 4 iron spikes. Looks like that avenue of research is exhausted.
Also also also also, If anyone can Identify what I'm semi-quoting in my post scripts, I will award them with kudos.
EDIT:
Ugh, I've found a flaw. By my reasoning, I grouped The feruchemical power of storing health as a Temporal Feruchemical Ability, seeing how Gold is a Temporal metal, However in HoA, The HoA specifically states in one of his/her monologues that a pewter spike allowed an Inquisitor to store health, and it gave no mention of needing gold to store this health in. In any case, this may mean all Feruchemical powers are physical or mental, like ordinary human powers seem to be (unless I can think of temporal or enhancement powers normal humans have (beside virility)). Again, ugh.
EDIT: thought of two more possible human abilities that theoretically could be taken by spikes.
EDIT: ok, until we get further info from B.S. I think the hemallurgical section is as complete as possible.
EDIT: ok, got something for each of the feruchemical metals. About half the table is suppositions, but I really like how it turned out. Yes, I have been up all night obsessing over this. Yes, each of these edits are from a different modification to the post. Yes, I'm slightly insane.