40d:Black bronze

From Dwarf Fortress Wiki

Black Bronze

╪ Ω Ω Ω Ω Ω ╪ ≡ ≡ = = ≡ ≡ Ω ≡ ≡ ≡ = ≡ ≡ Ω ≡ ≡ = = ≡ ≡ Ω ≡ ≡ ≡ = ≡ ≡ Ω ≡ ≡ = = ≡ ≡ Ω ≡ ≡ ≡ = ≡ ≡ Ω ╪ Ω Ω Ω Ω Ω ╪
Uses
Metal crafting Construction
Recipe
2 Copper bars 1 Silver bar 1 Gold bar
Properties
Material value 11
Wikipedia article

Unlike regular bronze or bismuth bronze, black bronze cannot be used to create weapons or armor, so is strictly for arts and crafts, statues, furniture and the like. Black bronze cannot be smelted directly from ore, but only from bars of pure metals. The value of a bar of black bronze is equal to the average value of its components - creating this alloy does not increase the total value of the material, unlike some alloys (2 copper bars at 2☼ each + 1 silver bar at 10☼ + 1 gold bar at 30☼ = 44☼/4 bars = 11☼/bar of black bronze.)