Black Oxide Coating (Blackening)

Black oxide is a chemical conversion coating that turns the surface of ferrous metals into magnetite (Fe₃ O₄ ), giving a uniform, deep black finish. Because the coating is formed from the base metal itself rather than added on top, it adds virtually no thickness, so parts keep their original dimensions and tolerances. At Balambiga Metal Finishers, we provide black oxide finishing for precision components and general engineering parts.

KeyBenefits

Negligible dimensional change:

Typically around 1 micro nor less, ideal for tight-tolerance parts.

Attractive black finish:

Auniform, non-reflective appearance that also reduces glare.

Corrosion resistance:

When sealed with oil, wax, or lacquer, it provides good protection against rust.

Reduced friction:

Oil-impregnated surfaces help prevent galling and wear.

No peeling or flaking:

The coating is part of the metal surface, soit does not chip like paint.

Cost effective:

A simple, economical finish for large batches.

Common Applications

Good to Know

Black oxide on its own offers limited corrosion protection, so the
post-treatment sealing step (oil, wax or lacquer) is what gives it lasting performance.

Need a reliable blackening finish for your components? Contact Balambiga Metal Finishers to discuss your requirements and request a quote.

Other Services

Balambiga: One‑stop destination for advanced, reliable, and community‑driven coating services.

Services

Company

Contact Us

Connect with Balambiga Metal Finishers—your trusted partner for quality surface coating solutions.

C-435,1st Stage, Peenya Indl. Estate,Bangalore-560058. KARNATAKA,INDIA

admin@balambiga.com enquiry@balambiga.com nmmurugan@balambiga.com

+91 8296144468