01
Surface review
Confirm steel condition, cleaning and pre-treatment around the desired appearance.
Steel surface reviewed
Black Oxide Services
Low-reflective black oxide finishing for machined steel parts, tooling, fasteners and assemblies. JINGLE reviews substrate, appearance, masking and post-treatment requirements before processing.
- Black Conversion Coating
- Low-Reflective Appearance
- Oil, Sealant & Dimensional Control
Trusted by Customers Across Industries
Black oxide finishing for tooling, industrial equipment, automation, mobility and custom OEM programs.
Black Oxide Capabilities
A quick view of the information buyers need before sending a black oxide RFQ. Final values are confirmed against substrate, appearance, masking and post-treatment requirements.
| Parameter | Capability details |
|---|---|
| Finish Process | Black oxide conversion coating with oil, wax or sealant post-treatment |
| Part Envelope | To be confirmed - reserve bath, rack and handling envelope |
| Coating Thickness | Minimal dimensional change; final condition confirmed per specification |
| Appearance | Matte to satin black, uniformity confirmed per project |
| Materials | Carbon steel, alloy steel, tool steel and compatible ferrous parts |
| Masking | Threads, bores, contact points and cosmetic zones masked per drawing |
| Production Volume | Prototype, low-volume and batch production |
| Accepted Drawing Formats | STEP, IGES, Parasolid, SolidWorks, PDF drawing and DXF |
Clean the Steel. Build the Finish. Preserve the Fit.
02
Masking strategy
Protect threads, bores and contact faces where the finish must not interfere with assembly.
Critical fits protected
03
Post-treatment control
Match oil or sealant to handling, corrosion and low-reflection requirements.
Post-treatment matched
See the Work Behind the Capability
Real black oxide equipment
Conversion coating tanks, racks and controlled handling equipment.
Actual steel finishing in process
Machined steel parts progressing through cleaning and oxide treatment stages.
Real appearance and dimensional inspection
Finished parts checked against appearance references and dimensional requirements.
Parts We Commonly Finish
Machined Steel Components
Low-reflective finishes with critical dimensions reviewed.
Tooling Inserts
Tooling surfaces with defined appearance and post-treatment requirements.
Fasteners and Pins
Hardware with no-coat areas and handling protection specified.
Fixtures and Jigs
Workholding parts with contact faces and assembly fits protected.
Small Shafts and Bushings
Precision cylindrical parts reviewed for final fit and oil or sealant use.
Custom OEM Steel Parts
Custom steel components finished to the agreed appearance specification.
Materials We Finish
Carbon Steel
low-reflective hardware
Alloy Steel
high-strength parts
Tool Steel
tooling surfaces
Machined Ferrous Parts
precision interfaces
Heat-Treated Steel
wear-resistant components
Quality Evidence at Every Handoff
- 01
Incoming Substrate and Surface Review
Review steel grade, heat-treated condition and surface preparation needs.
- 02
Cleaning and Masking Checks
Verify cleaning and no-coat areas against the approved drawing.
- 03
Color, Coverage and Appearance Inspection
Compare black appearance and coverage with the agreed reference.
- 04
Final Fit and Corrosion-Protection Review
Check final fits and confirm the selected corrosion-protection post-treatment.
Documents available
- FAI
- Material Certificate
- Finish Approval Record
- Post-Treatment Record
- CoC
- PPAP Upon Request
Prototype to Production
01
Prototype Finish
Confirm appearance, masking and fit on first articles.
02
Low-Volume Production
Support launch quantities with approved samples and controlled racking.
03
Batch Production
Repeat the approved cleaning, oxide and post-treatment route.
Engineering Support You Can Use
01
Finish and Masking Review Before Processing
Review appearance, masking and functional interfaces before processing.
02
Steel Condition and Post-Treatment Planning
Match oil, wax or sealant to handling and service requirements.
03
Flexible Prototype & Batch Production
Confirm initial finish samples before launch quantities and repeat runs.
04
Controlled Appearance and Fit Inspection
Inspect visual uniformity and critical fits without assuming zero dimensional impact.
05
Material & Finish Documentation
Agree finish approvals, material records and post-treatment documentation.
06
Responsive RFQ Support
Clarify steel condition, appearance and quantity before defining the finish route.
Black Oxide FAQ
What steel materials are suitable for black oxide?
Carbon steel, alloy steel, tool steel and compatible machined or heat-treated ferrous parts can be reviewed. Steel condition and the specified finish standard determine the suitable preparation and treatment route.
What appearance and post-treatments can you provide?
Matte to satin black appearances and oil, wax or sealant post-treatments can be reviewed. Black oxide provides limited corrosion protection on its own, so the service environment and supplementary protection must be considered.
Can you mask threads, bores and contact areas?
Threads, bores and contact areas can be evaluated for masking where the finish must be excluded. Identify critical zones, dimensions and assembly requirements on the drawing.
Does black oxide change critical dimensions?
Black oxide generally has minimal dimensional buildup, but critical fits still require review. Specify tolerances and any post-treatment restrictions so final dimensions and assembly condition can be verified.
Can you provide finish and inspection records?
Finish approval, post-treatment and agreed inspection records can be provided within the project scope. Include appearance references, critical fits and required documentation with the RFQ.
What information is needed to quote black oxide?
Send the drawing with substrate, appearance, masking, post-treatment, quantity and critical dimensions. Include handling and corrosion-protection expectations so a suitable finish route can be reviewed.
Have a Steel Part to Finish in Black?
Send the drawing with substrate, appearance, masking, post-treatment and quantity requirements. We will review the finish route before quoting.
- 3D Model
- Technical Drawing
- Substrate
- Appearance
- Post-Treatment
- Quantity
- Inspection Requirements
Related surface finishing processes