Metal Finishing Chicago, IL
Metal Finishing and Electroplating for Chicago Manufacturers
Keystone Corporation provides specification driven metal finishing for OEMs and contract manufacturers in the Chicago area and across the Midwest. Our coatings meet AMS, ASTM, and MIL requirements and are backed by full certification.
Metal Finishing for High-Reliability Parts in Chicago, IL
Keystone Corporation’s metal finishing processes meet the requirements of government, commercial and corporate specifications, including AMS, ASTM, and MIL specifications. Certification acknowledging compliance is provided at no additional charge, giving your quality and purchasing teams the documentation they need for audits and PPAPs.
Whether you are building electronic assemblies, industrial controls, power distribution hardware, or precision machined components, our team helps Chicago manufacturers choose the right coating, thickness, and testing plan for each application.
Chicago Metal Finishing Capabilities at a Glance
Typical processes and treatments available to Chicago customers include:
- Plating for electronic applications including gold, silver, tin, tin/lead, copper and nickel
- Stainless steel treatments including passivation and pickle passivation
- Phosphate coatings and aluminum conversion coatings for wear and paint adhesion
- Special surface treatments such as cleaning, electropolishing, buffing and abrasive blasting
Below is a detailed list of processes and specifications. For deeper technical information on a specific process, follow the links to each capability page.
Plating for Electronic and Industrial Applications
Chicago’s electronics, industrial, transportation, and aerospace manufacturers rely on consistent, spec-compliant finishes. Keystone provides a full range of electroplating options designed for conductivity, solderability, corrosion resistance, and wear performance.
Cadmium Plating – Clear, Yellow, Black, and Olive Drab Chromate
- AMS-QQ-P-416
- AMS 2400
- AMS 2401
- ASTM B766
- ISO 4521
Copper Plating
- MIL-C-15540
- AMS 2418
- ASTM B734
Electrodeposited Nickel Plating (Bright) and Sulfamate Nickel Plating
- AMS-QQ-N-290
- ASTM B689
- AMS 2403
- AMS 2424
- MIL-P-27418
- ISO 1458
Electroless Nickel Plating
- AMS-C-26074
- ASTM B733
- AMS 2404
Gold Plating – Hard and Soft
- MIL-G-45204
- ASTM B488
- AMS 2422
Silver Plating – Bright, Semi Bright, Matte
- QQ-S-365
- ASTM B700
- AMS 2410
- AMS 2411
- AMS 2412
Tin Plating – Bright and Matte
- MIL-T-10727
- ASTM B545
- AMS 2408
Tin/Lead Solder Plating – Bright and Matte 95-5, 90-10, 60-40 Alloys
- MIL-P-81728
- AMS-P-81728
- ASTM B579
- M230 of MIL-F-14072
Stainless Steel Treatments for Chicago Fabricators
From welded frames to precision stainless components, Chicago fabricators use Keystone to restore and maximize corrosion resistance after machining, welding, and fabrication.
Passivation
- AMS-QQ-P-35
- AMS 2700
- ASTM A967
- ISO 16048
Pickle Passivation
- ASTM A380
Additional Coatings and Conversion Layers
Beyond plating and stainless treatments, Keystone supports Chicago projects with phosphate coatings and aluminum conversion coatings for wear, paint adhesion, and corrosion resistance.
Zinc Phosphate and Manganese Phosphate Coating
- MIL-DTL-16232
- TT-C-490
- MIL-STD-171
Aluminum Conversion Coating (Alodine, Irridite)
- MIL-DTL-5541
- ASTM B449
- ASTM B921
- AMS 2473
- AMS 2474
Zinc Plating – Clear, Yellow, Olive Drab, and Black Chromate
- QQ-Z-325
- ASTM B633
Special Surface Treatments for Chicago Projects
When your Chicago drawings call out additional cleaning or surface preparation steps, Keystone can integrate those operations into a controlled, documented process.
- Cleaning for oxygen service
- General cleaning
- Pickling
- Electropolishing
- Buffing and polishing
- Abrasive blasting
Why Chicago Manufacturers Choose Keystone
- Processes aligned with AMS, ASTM, and MIL specifications
- Experience with electronic, industrial, transportation, and aerospace components
- Certification packages and documentation at no additional charge
- Support for prototypes, pilot runs, and ongoing production volumes
If you are sourcing metal finishing for a Chicago plant or a Midwest production program, Keystone provides the process control and documentation your customers expect.
Request a Metal Finishing Quote for Your Chicago Project
Share your drawings, specs, and estimated volumes. A Keystone representative will review your requirements and recommend the best finishing process for your parts.
