Metal Finishing and Electroplating Services in Chicago, IL
Keystone Corporation provides specification-driven metal finishing and electroplating for manufacturers in Chicago, IL and across the Midwest. Since 1928, we have delivered electroplating, conversion coatings, and surface treatments that meet AMS, ASTM, and MIL requirements for OEMs, contract manufacturers, and government suppliers. Certifications of Compliance are provided at no additional charge with every order.
Whether you are producing electronic assemblies, aerospace components, industrial controls, or precision machined parts, Keystone helps Chicago manufacturers select the right coating, alloy, thickness, and testing plan for each application.
Request a Chicago Metal Finishing Quote
Metal Finishing Capabilities for Chicago Manufacturers
Keystone Corporation offers a full range of electroplating, stainless steel treatments, conversion coatings, and special surface treatments for Chicago-area production programs. All processes are backed by rigorous quality control and full specification compliance documentation.
Plating for Electronic and Industrial Applications
Chicago’s electronics, defense, transportation, and aerospace manufacturers rely on consistent, spec-compliant finishes for conductivity, solderability, corrosion resistance, and wear performance. Keystone provides the following electroplating services for Chicago customers:
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
Conversion Coatings and Additional Processes
Beyond electroplating and stainless treatments, Keystone supports Chicago manufacturing projects with phosphate coatings, aluminum conversion coatings, and zinc plating for wear resistance, paint adhesion, and corrosion protection.
Zinc Phosphate and Manganese Phosphate Coating
- MIL-DTL-16232
- TT-C-490
- MIL-STD-171
Aluminum Conversion Coating (Alodine, Iridite)
- 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
When Chicago drawings call out additional cleaning or surface preparation steps, Keystone integrates 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 Corporation
Since 1928, Keystone Corporation has been a trusted metal finishing partner for manufacturers across the Midwest. Our electroplating and surface treatment services are supported by rigorous in-process quality control and deep specification expertise across commercial, government, and military programs.
- All processes meet AMS, ASTM, and MIL specifications
- Certificates of Compliance provided at no additional charge
- Support for prototypes, pilot runs, and ongoing high-volume production
- Technical assistance and coating recommendations available upon request
- Experience across electronics, aerospace, industrial, and defense applications
Contact Keystone Corporation to discuss your Chicago metal finishing requirements and receive a personalized quotation based on your process, specification, and volume needs.
Chicago Metal Finishing FAQs
What metal finishing services does Keystone provide for Chicago manufacturers?
Keystone Corporation offers a full range of electroplating, conversion coatings, and surface treatments for Chicago customers, including gold, silver, tin, tin/lead, copper, nickel, cadmium, and zinc plating, along with passivation, phosphate coatings, aluminum conversion coatings, and special surface treatments.
Does Keystone provide Certificates of Compliance for Chicago orders?
Yes. Certificates of Compliance are provided at no additional charge for all orders. Keystone supports commercial, government, AMS, ASTM, and MIL specification requirements with full documentation for audits, PPAPs, and quality records.
What industries does Keystone serve in the Chicago area?
Keystone provides metal finishing for Chicago-area manufacturers in electronics, aerospace, defense, transportation, industrial controls, and precision machining. Our coatings are engineered for high-reliability applications where specification compliance and consistent finish quality are critical.
How do I get a metal finishing quote for a Chicago project?
Submit your drawings, specifications, and estimated volumes using our quote request form or contact us directly. A Keystone representative will review your requirements and recommend the best finishing process for your parts.
Our Service Areas:
- Chicago, IL
- Buffalo, NY
- Albany, NY
- Binghamton, NY
- Boston, MA
- Erie, PA
- New York City, NY
- Pittsburgh, PA
- Rochester, NY
- Syracuse, NY
