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Insta-Blak Z-360

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Insta-Blak Z-360 is an easy-to-use, quick-finish room temperature blackening process for zinc and cadmium-plated parts. One gallon can coat approximately 200–300 sq. ft. of cadmium or zinc parts.

Learn about EPi's trial kit. 

Samples available to purchase - CALL #262-786-9330.

PLEASE NOTE: Orders ship within 3 business days.

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How to Use Insta-Blak Z-360

Easy-to-use Insta-Blak Z-360 may be used as a blackening agent for coating cadmium, zinc, and galvanized surfaces.

Use Insta-Blak Z-360 to:
  • Coat zinc and cadmium objects with a jet-black finish
  • Achieve clean, smut-free finishes
  • Blacken parts quickly and easily
  • Work with a blackening solution at room temperature
Getting Started

EPi offers sample kits for testing out Insta-Blak Z-360 or for small projects. Learn more about what's included in the trial kit.

Guides & Manuals

Safety & Technical Data

The Blackening Process: Insta-Blak Z-360

For the longest-lasting, deepest, and cleanest black finishes, we recommend the following blackening process. Please read all safety data sheets and technical data sheets prior to beginning a project.

1. Clean

Soils such as cutting oils, coolants, lubricants, and rust inhibitors must be removed from the metal workpiece. Soils can inhibit the blackening process and negatively affect coating adhesion and appearance. Thoroughly clean and degrease the parts prior to beginning the blackening process.

Recommended Cleaning Products:
  • E-Kleen 163 is a non-caustic and non-silicated phosphate cleaner for zamac alloys. It's a 7-step process.
  • E-Kleen 154 is a one-step cleaner and deoxidizer for oil-free zamac and a 5-step process for zinc parts.
  • E-Kleen 153 allows users to soak clean or electro clean metal parts with a single product. It's part of a 7-step process.

2. Rinse

After cleaning the metal parts, rinse them in cold, overflowing tap water; it’s necessary to rinse the parts to remove residual cleaning solution. Parts carrying over un-rinsed film of alkaline cleaning solution would quickly contaminate the subsequent chemicals in use, resulting in a spotty or non-adherent black finish. 

Immerse the parts to be blackened for 30–60 seconds.

3. Activation

Activate/deoxidize the parts at room temperature in a solution of acetic acid, sulfuric acid, or E-Kleen 154. See technical data sheet for more specific instructions.

4. Rinse

Rinse the parts to be blackened for 30–60 seconds.

5. Blacken

Immerse the parts in a 1:9 solution of Insta-Blak Z-360 and water until a deep black finish develops, approximately 2–5 minutes.

If Insta-Blak Z-360 isn't quite what you’re looking for, consider these similar products:
  • Ultra-Blak 460 is a 160º F blackening process that is chrome free.

6. Rinse

Rinse in cold, overflowing tap water for 30–60 seconds to remove residual blackening solution and ensure sealant will not be contaminated.

7. Seal

Seal the black-oxide finish by immersing the still-wet parts in a corrosion-inhibiting, rust-preventative, and water-displacing solution. E-Tec corrosion inhibitors are formulated to rapidly displace the residual acidic solution from the preceding rinse and produce long-term corrosion protection. As the E-Tec is absorbed, it enhances the depth of black, which may take several hours.

Recommended Sealing Products:
  • E-Tec 510 is a non-solvent, water-soluble oil that results in a slightly oily finish.
  • E-Laq 525 provides a hard, dry, and corrosion-resistant finish.
  • E-Tec 504 is a solvent-based, water-displacing oil.