I'm with the crowd that says no. I say that you need a magical weapon to bypass DR.
Here's a question for the people that say yes, on the grounds that any enhancement bonus = enhancement bonus.
The SRD on Adamantine:
Also (emphasis mine):
So lets say you want to create a Keen Flaming Adamantine Longsword. It would have a +2 Enhancement Bonus. Would it cost?
a) 17 000 gp (9000 for adamantine, 8000 for +2 bonus equivalent)
b) 27 000 gp (9000 for adamantine, 18 000 for minimum +1 (magical) enhancement bonus and +2 bonus equivalent)
c) 41 000 gp (9000 for adamantine, 32 000 for +4 magical weapon)
As can be seen, cases a and b both yield a superior magical weapon (hardness, works partially in AM areas) at a lesser price. Would you let your players create such items?
K.
Here's a question for the people that say yes, on the grounds that any enhancement bonus = enhancement bonus.
The SRD on Adamantine:
Adamantine: Found only in meteorites and the rarest of veins in magical areas, this ultrahard metal adds to the quality of a weapon or suit of armor based on how much of the material is used. Weapons fashioned from adamantine have a natural enhancement bonus to attack and damage. Armor fashioned from adamantine has a natural enhancement bonus to AC. These bonuses do not stack with any other enhancement bonuses. Weapons and armor fashioned from adamantine are treated as masterwork items with regard to creation times, but the masterwork quality does not affect the enhancement bonus of weapons or the armor check penalty of armor.
Also (emphasis mine):
Only a masterwork weapon can be enchanted to become a magic weapon, and its cost is added to the total enchantment cost to determine final market value. Additional costs for the materials are subsumed in the cost for creating the magic weapon-half the base price listed on Table: Weapons, according to the weapon’s total effective bonus.
Creating a magic weapon has a special prerequisite: The creator’s caster level must be at least three times the enhancement bonus of the weapon.
A magic weapon must have at least a +1 enhancement bonus to have any of the abilities listed on Table: Weapon Special Abilities.
So lets say you want to create a Keen Flaming Adamantine Longsword. It would have a +2 Enhancement Bonus. Would it cost?
a) 17 000 gp (9000 for adamantine, 8000 for +2 bonus equivalent)
b) 27 000 gp (9000 for adamantine, 18 000 for minimum +1 (magical) enhancement bonus and +2 bonus equivalent)
c) 41 000 gp (9000 for adamantine, 32 000 for +4 magical weapon)
As can be seen, cases a and b both yield a superior magical weapon (hardness, works partially in AM areas) at a lesser price. Would you let your players create such items?
K.