Black Oxide Coating
This coating gives a great looking black finish, combined with excellent protection against rust.
Our ‘hot liquid bath’ process is also long lasting and very durable, even when parts are subjected to flexing.
We offer a 24 hour service. Faster turnarounds can be arranged.
Maximum dimensions: Diameter 450mm, Length 500mm
Architectural Blackening
At Alpha Detroit Heat Treatment we can also blacken large architectural pieces by hot dipping steel into quenching oil.
Although not as good a coating as the authentic black oxide coating, it results in a slightly uneven mottled blackened look which appeals to some customers for a non-corrosive environment, giving a rustic blackened appearance.
Maximum dimensions: Length 3,000mm, Width 1,150mm, Height 1,350mm