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Copper, Brass, & Bronze

Hard Oxide Finishes for Copper, Brass, & Bronze

Black Oxide: Copper, Brass, & Bronze

Hot Temperature, 140–200° F

Hot-temperature black-oxide processes produce glossy black-blue coatings and true black-oxide magnetite finishes in 10–20 minutes. EPi’s line of high-temperature blackeners offers impressive abrasion and corrosion resistance, and several products meet military and AMS specifications.

Ultra-Blak 420

For Industrial Use

Hot black-oxide solution formulated for a variety of copper, brass, and bronze surfaces. Ideal for hardware and construction surfaces.

Perfect for
  • Small items such as ammunition or hardware/fasteners
  • Plumbing, pipes, and fittings
  • Achieving a hard copper oxide finish, US 10 B
View Ultra-Blak 420

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