Black Oxide Steel & Stainless Steel Coatings

Black oxide on wrought iron, cast/malleable iron, and low-carbon alloy steel. 300-series, 400-series, and 17-4 PH STAINLESS STEELS.

Black oxide is a conversion coating formed by the chemical reaction with the iron in a metal to form a protective surface. Oxidizing salts react with the iron to form magnetite (Fe304), the black oxide of iron. It must be impregnated with oil or wax.

Advantages:

  • No buildup
  • Mild corrosion resistance
  • Improved appearance

A uniform black coating for ferrous metals that is used primarily as a decorative finish; it only provides limited corrosion protection under mild corrosive conditions. Black oxide coatings should be given a supplementary treatment (i.e., displacement per MIL-C-16773 Grade-3 or protective treatments per MIL-C-16173). For moving parts that cannot tolerate dimensional or physical change, it can be used to reduce reflected light.

Capabilities

Industries Served :

  • Communication antenna symbol on black background
    Military
  • Microchip icon on black background
    Automotive
  • Pickup truck icon in gold
    Electronic
  • Golden military badge with star and stripes.
    Telecommunications

Specifications (Military, Federal, and ASTM):

  • Black Oxide Coating:

    MIL-C-13924c

  • Chemical Finish

    MIL-F-495e

  • Copper:

    MIL-C-14550b

  • Electroless Nickel:

    MIL-C-26074e

  • Gold:

    MIL-G-45204c (A: 90 khn, B: 91-129, C: 130-200, D: 201+)

  • Nickel:

    QQ-N-290a (Bright, Sulfamate, Black, Strike)

  • Phosphate:

    light TT-C490c

  • Phosphate:

    heavy DOD-16232-f

  • Tin:

    MIL-T-10727c (Type I, Type II)

  • Tin-Lead:

    MIL-P-81728c (90:10%, 60:40%, 10:90%)

Specifications for Copper, Brass, BeCu, and Phos Bz

  • Substrate (Cu):

    Copper, Brass, BeCu, Phosphor Bronze

  • Tank (Cu):

    200-gallon tank

  • Barrels (Cu):

    10 X 18 barrels

  • Racks (Cu):

    24 X 24 racks

  • Specifications
    (Military, Federal, and ASTM)(Cu) :

    MIL-F-495

Specifications for Steel

  • Substrate:

    Wrought iron, cast/malleable iron, low-carbon alloy steel

  • Tank:

    1000-gallon tank

  • Barrels :

    42 X 22 barrels

  • Racks:

    52 X 36 racks

  • Post-Treatments :

    • Oil or plain
    • Jon-Cote wax
    • Enthone wax
    • Black wax

  • Specifications (Military, Federal, and ASTM):

    MIL-C-13924C, Class 1

Quality Assurance

Quality Assurance-Standard Services & Practices

Performance and functionality testing will be performed by independent laboratories at the customer's expense.

Specifications for Stainless Steel

  • Substrate SS:

    300 series, 400 series, and 17-4 PH stainless steel

  • Tank (SS):

    500-gallon tank

  • Barrels (SS):

    42 X 22 barrels

  • Racks (SS):

    52 X 36 racks

  • Post-Treatment (SS):

    • Oil or plain
    • Jon-Cote wax
    • Enthone wax
    • Black wax

  • Specifications (Military, Federal, and ASTM SS):

    MIL-C-13924C, Class 4