Armor using advanced metals [Archive] - Wizards Community

Post/Author/DateTimePost
Mathurian

08-01-07, 03:49 PM
Hi all,
My group has recently re-focused on D&D and are playing more and getting more organized. As part of this one of my characters has decided to forge himself some armor out of the metals he's collected over the years (16th level Dwarf, so quite a bit). He has Mithril, Adamantium, and Platinum, all in sufficient quantities for forging. My question is this: In what book (I have pretty much all of them) does one find the rules for the bonuses these metals confer on armor made of them. I thought I'd seen those rules at one time in the past, but now I can't find them, Help!
ccerose

08-01-07, 03:57 PM
DMG armor, special materials section. Can't remember the exact page number.

Edit (added from SRD)

Adamantine

This ultrahard metal adds to the quality of a weapon or suit of armor. Weapons fashioned from adamantine have a natural ability to bypass hardness when sundering weapons or attacking objects, ignoring hardness less than 20. Armor made from adamantine grants its wearer damage reduction of 1/- if it’s light armor, 2/- if it’s medium armor, and 3/- if it’s heavy armor. Adamantine is so costly that weapons and armor made from it are always of masterwork quality; the masterwork cost is included in the prices given below. Thus, adamantine weapons and ammunition have a +1 enhancement bonus on attack rolls, and the armor check penalty of adamantine armor is lessened by 1 compared to ordinary armor of its type. Items without metal parts cannot be made from adamantine. An arrow could be made of adamantine, but a quarterstaff could not.

Only weapons, armor, and shields normally made of metal can be fashioned from adamantine. Weapons, armor and shields normally made of steel that are made of adamantine have one-third more hit points than normal. Adamantine has 40 hit points per inch of thickness and hardness 20.

Adamantine Cost Modifiers
Type of Adamantine Item Item Cost Modifier
Ammunition +60 gp
Light armor +5,000 gp
Medium armor +10,000 gp
Heavy armor +15,000 gp
Weapon +3,000 gp
Shield +2,000 gp

Mithral

Mithral is a very rare silvery, glistening metal that is lighter than iron but just as hard. When worked like steel, it becomes a wonderful material from which to create armor and is occasionally used for other items as well. Most mithral armors are one category lighter than normal for purposes of movement and other limitations. Heavy armors are treated as medium, and medium armors are treated as light, but light armors are still treated as light. Spell failure chances for armors and shields made from mithral are decreased by 10%, maximum Dexterity bonus is increased by 2, and armor check penalties are lessened by 3 (to a minimum of 0).

An item made from mithral weighs half as much as the same item made from other metals. In the case of weapons, this lighter weight does not change a weapon’s size category or the ease with which it can be wielded (whether it is light, one-handed, or two-handed). Items not primarily of metal are not meaningfully affected by being partially made of mithral. (A longsword can be a mithral weapon, while a scythe cannot be.)

Weapons or armors fashioned from mithral are always masterwork items as well; the masterwork cost is included in the prices given below.

Mithral has 30 hit points per inch of thickness and hardness 15.

Mithral Cost Modifiers
Type of Mithral Item Item Cost Modifier
Light armor +1,000 gp
Medium armor +4,000 gp
Heavy armor +9,000 gp
Shield +1,000 gp
Other items +500 gp/lb.
Grumman

08-01-07, 03:59 PM
The DMG has rules for mithral and adamantine, near the end of the magic items section.
Vanigo

08-01-07, 06:48 PM
And if you're wondering, platinum is probably too soft to make any sort of usable armor out of.
Manus

08-01-07, 07:54 PM
Platinum, when alchemically treated to make it hard enough to use in weapons and armor, is covered in Magic of Faerun.
Mathurian

08-01-07, 09:22 PM
Thanks a lot guys, I appreciate it.