Seeing brass in your dream signifies hostility or conflict. If you dream of melting brass, it suggests that you are getting into arguments over trivial matters, making you a topic of discussion among others. This type of dream may indicate some unrest or controversy in your life, which could negatively impact your social standing.
From Imam Muhammad Ibn Seerin's Dictionary of Dreams According to Islamic Inner Traditions â entry "Brass" (page 54).
Brass in a dream means enmity. If one sees himself melting brass in a dream, it means that he will engages in a fight about mundane things and consequently becomes himself a subject of people's talk. It is also said tha t if one sees yellow brass in his dream, it means that he will hear harsh words
and false statements. Yellow brass in a dream also represents a person who is proud about his worldly possessions. If one is beaten with a stick of brass in a dream, it means that he is seeking some worldly gains. Brass or similar yellow metals in a dream represent an imposter who swindles money from people, cheats and threatens them. (Also see Coppersmith)
Note: Islamic dream interpretation depends on the dreamer's circumstances and state. This is a general guide drawn directly from the source book.