Long Blades

Iron (-2)

Silver (=)

Steel (=)

Elv (+2)

Dwar (+4)

Mith (+6)

Adam (+6)

Ebony (+8)

Orc (+10)

Daed. (+12)

Broadsword (1-12)

375

875

500

625

750

625

875

1000

1250

1500

Longsword (2-16)

450

1050

600

750

900

750

1050

1200

1500

1800

Sabre (3-12)

393

918

525

656

787

656

918

1050

1312

1575

Katana (3-16)

450

1050

600

750

900

750

1050

1200

1500

1800

Dai-katana (3-21)

525

1225

700

875

1050

875

1225

1400

1750

2100

Claymore (2-18)

525

1225

700

875

1050

875

1225

1400

1750

2100

Steel is the standard by which weapons are rated.  I have used it as the base and the pluses indicate how much more damage the weapon will do.  Non-steel weapons also have "to hit" adjustments, but I do not know the formula.  Silver is equivalent to steel in terms of damage, but is equivalent to Adamantium in its enchantment potential.  Mithril is superior to Elven in terms of damage, but is equivalent in terms of enchantment potential.  Mithril and Adamantium are equivalent in terms of damage, but Adamantium is clearly superior in its enchantment potential.