Black Oxide Coating, Black Oxide Finishing for Zinc, Stainless Steel & Aluminum

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Black Oxide Coating for Zinc

Insta-Blak Z-360is a room temperature blackening process for die cast and plated zinc surfaces. The very mild acidic liquid concentrate is diluted with 9 parts of water for a 10% by volume working solution. Immersion times of 2 - 5 minutes. Equally effective on cadmium surfaces.

Black Oxide Coating for Stainless Steel

Insta-Blak SS-370is an acidic liquid concentrate used full strength or diluted with up to 3 parts water to blacken stainless steel at room temperature. Recommended for color coding parts and blackening engravings on stainless steels. Produces a pleasing dark gray/black finish.

Black Oxide Coating for Iron, Steel & Powdered Metals

Insta-Blak S-334is a swab-on finish recommended for quick touchup of scratched or damaged black oxide surfaces. It is also used for swab-on finishing of prototype parts. The mildly acidic liquid concentrate is used at full strength.

Aluminum Blackening

Insta-Blak A-380is a room temperature immersion finish for aluminum surfaces. Alkaline liquid concentrate used at 25% to 40% by volume in water. Immersion times of 30 seconds to 2 minutes. It is recommended for blackening aluminum objects not requiring a high degree of abrasion resistance such as heat sinks, etc. It is not as hard as a black anodized finish. The hardness of the finish can be enhanced by top coating with a clear lacquer such as EPI's E-Tec 520 or E-Tec 525.

Insta-Blak A-384is an acidic liquid concentrate used full strength that is applied by swab-on techniques for blackening engravings, etchings, prototype parts or for the quick touchup of scratched or re-machined black anodized surfaces.

Insta-Blak A-385is an immersion or swab-on finish at room temperature for aluminum surfaces. Mild acidic liquid concentrate used full strength for swab-on finishing and touchup finishing or diluted with 4 parts water for immersion finishing. Frequently used to produce an imitation pewter finish on aluminum surfaces.

Click here for more information about our metal blackening process and chemistry.

Click below to view additional metal blackening and black oxide chemicals:

• Insta-Blak 333 for Iron and Steel
   
• Hot Oxide Blackening
• Ultra-Blak 400 for Steel
• Ultra-Blak 400-L for Steel
• Ultra-Blak 404 for Cast Iron
• Ultra-Blak 407 for Stainless Steel
• Ultra-Blak 420 for Copper/Brass
• Ultra-Blak 455 for Cadmium/Zinc
• Ultra-Blak 460 for Zinc
• Ultra-Blak 465 for Nickel and Electroless Nickel
• Ultra-Blak Rectifier