S&P Heat Treating Inc. is now offering a BLACK OXIDE Coating Process

We specialize in single piece, small batch, and bulk processing smaller pieces. Our BLACK OXIDE coating process provides a uniform black surface that is corrosion and somewhat scratch resistant. It is used mostly for moving parts that cannot tolerate a dimensional change and to decrease light reflection. Black Oxide coating process applies to ferrous, non-ferrous, brass and copper alloy. The Black Oxide is a true conversion coating converting iron to the naturally occurring black iron oxide compound called magnetite. Machining, polishing, buffing, line-graining, and abrasive blast, all play an important part in achieving a desired shade or gloss level.

The Black Oxide Coating Processes

Blackening can be achieved in several different ways. There are three main ways to do this:

  1. Hot Bath
  2. Cold Coating
  3. Mid-Temperature Bath

Benefits of Black Oxide Coating

  • Will not significantly change the dimensions of the fasteners as hot dip galvanizing does.
  • A cost effective alternative to other methods of corrosion resistance such as electroplating.
  • The coating process can normally be done in large quantities which makes it faster and cheaper for smaller sizes.
  • Provides a decorative finish
  • Adds a layer of mild corrosion and abrasion resistance
  • Paint sticks well to the black coating

S&P Heat Treating Black Oxide processes certify to various aerospace, military, and customer specifications:

  • MIL-DTL-13924 Class 1, 2, 3, & 4
  • AMS-2485
  • MIL-F-495

Please contact S&P Heat Treating now to get a quote for your BLACK OXIDE Coating needs. We proudly serve our customers in the states of Rhode Island ( RI ), Massachusetts ( MA ), Connecticut ( CT ), New Hampshire ( NH ), and throughout the USA.