CHROMATE

Corrosion isn’t just an inconvenience, it’s a liability. In military and aerospace environments, even minor surface degradation can compromise performance and compliance. Chromate conversion is often the final line of defense for aluminum and zinc-plated components, especially those exposed to moisture and extreme handling.

For mission-critical parts, chromate finishing is part of the spec. And it needs to be applied by a team that understands the nuances of defense contracting.

• Defense and aerospace components requiring corrosion protection to mil-spec
• Parts exposed to moisture, abrasion, or harsh conditions
• High-volume production runs where finish consistency and traceability matter
• Projects where coating delays would slow down final assembly or delivery

If corrosion resistance and compliance aren’t negotiable, chromate coating is the clear choice.

We apply clear and yellow zinc chromate conversion coatings in-house, to full mil-spec requirements. With finishing integrated directly into the production line, there’s no need to bounce between vendors. Parts move from machining to coating, all within one facility.

Every finish is performance tested using salt spray methods and documented for traceability. You’re not just getting corrosion resistance, you’re getting proof it holds up.

• Clear and yellow chromate to military spec
• Seamless integration with CNC, stamping, and assembly
• Ideal for aerospace, defense, and harsh industrial use
• In-house salt spray testing to verify performance
• Shorter lead times, fewer vendors, and tighter process control

When the application is high-stakes, Lewis gets the finish right every time.