lastu gismu

x₁ is a quantity of/contains/is made of brass [copper/zinc alloy] of composition including x₂.

(adjective:) x₁ is brazen). See also jinme, ransu, tunka.

jbovlaste

In notes:

jinme: x₁ is a quantity of/contains/is made of made of metal of composition including x₂.
ransu: x₁ is a quantity of/contains/is made of bronze of composition including x₂.
tunka: x₁ is made of/contains/is a quantity of copper (Cu); [metaphor: reddish, electrical conductor].