STEEL & STAINLESS STEEL FINISHING

Black Oxide for Industrial Parts

Black oxide for steel and stainless steel industrial parts and series production.

Give your parts a black finish with minimal dimensional change.

For recurring orders and production runs, share your drawings, quantities and requirements to request a quote.

  • Parts ready in 48 hours

    Timing is confirmed with your quote, based on your quantities and requirements.

  • 1 million parts treated annually

    Industrial parts finished every year in our Longueuil facility.

What Is Black Oxide?

Black oxide is a chemical conversion treatment that forms a thin black oxide layer on the surface of steel or stainless steel. Unlike paint, it changes the metal’s surface rather than covering it with a thick coating.

The treatment produces a black appearance with minimal dimensional change. An oil finish is then applied to help protect the parts against corrosion.

Finish & Benefits

A Black Finish That Preserves the Details

Black oxide is an option for parts that need a dark appearance without the buildup of a thick coating.

  • Close-up of machined rings with a black oxide finish

    Minimal Dimensional Change

    Preserve the fit of closely matched components with a treatment that adds negligible dimensional buildup.

  • Close-up of sprockets with a black oxide finish

    Reduced Light Reflection

    Darken the metal surface and reduce glare. The final appearance depends on the original surface finish and the oil applied after treatment.

  • Close-up of tube ends with a black oxide finish

    Protection With an Oil Finish

    The oil post-treatment helps improve corrosion resistance during handling, storage and use.

Have specific requirements for appearance, fit or operating conditions? Share them with our team when requesting your quote.

Discuss Your Requirements
Project Gallery

See the Finish. Picture Your Parts.

Industries Served

Finishing for Industrial Manufacturers

  • Aerospace
  • Automotive
  • Manufacturing

Black Oxide Capabilities

Check our materials, tank dimensions and treatment specifications, or send us your drawing to discuss your project.

Materials
Steel and stainless steel
Tank capacities

Steel + stainless steel

18″ × 34″ × 15″ deep

Steel

36″ × 48″ × 15″ deep

16″ × 72″ × 15″ deep

Specifications
  • QQ-P-35C · TYPE VI
  • MIL-DTL-13924D · CLASS 1
  • MIL-DTL-13924D · CLASS 4
Finish
Black oxide + oil post-treatment

Usable capacity depends on your part’s shape, orientation and handling requirements. Include your material grade, dimensions and required specification so we can confirm suitability.

Send Your Project Details

Our Black Oxide Process

From cleaning to the final oil treatment, each stage prepares the finish result your parts need.

Why Placage Boucherville

A Finishing Partner for Your Project

  • 20+ years

    Experience You Can Rely On

    With more than 20 years of metal finishing experience, Placage Boucherville helps customers find the right treatment for their parts.

  • Specifications

    Your Technical Requirements Matter

    Send us your drawing, material grade and required treatment specification. We’ll review your project requirements, including any compliance documentation you need.

  • Timing

    Based on Your Production Schedule

    Working toward a production deadline? Share your required date so we can discuss processing availability and coordinate your order.

Customer Testimonials

Hear from customers who trust Placage Boucherville with their finishing projects.

  • We regularly use the services of Placage Boucherville. We used other plating service providers in the past. The service and speed of Placage Boucherville are unparalleled. We are assured of quality and consistency with every order. The service is personalized and accommodating. We feel respected and well-regarded. A value that is much rarer these days.

    Yves Perron
  • We have been customers for several years and have never been disappointed. This company offers impeccable quality and outstanding service. I highly recommend it.

    Martin Grise
  • I am extremely satisfied with Placage Boucherville. The team is very professional and attentive to my needs. Their customer service is impeccable, and I have always received quick and clear answers to my questions. Well done, and keep up the great work!

    Simon Imbeault
How to Get Started

From Project Details to Finished Parts

  1. 01

    Send Your Requirements

    Drawings or photos, quantities, material grade and required date.

  2. 02

    Confirm Your Quote

    We confirm the treatment, pricing and turnaround with you.

  3. 03

    Arrange Your Order

    Coordinate the receipt of your parts with our team.

Request Your Black Oxide Quote

Tell us about your parts and your finishing requirements. Share the details you have, and our team will follow up to review your project.

Step 1 of 3

Your details

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FAQ

Frequently asked questions

What we do

Four treatments, on aluminum, steel and stainless steel, for Quebec manufacturers.

Our treatments