Tin Zinc Plating (SnZn)



Plating Technology’s experience, commitment to quality, and investment in the latest equipment has earned us an industry-wide reputation for providing high quality finishes at very competitive prices. Our tin-zinc plating services, recommended for use on fasteners and other electrically conductive components used in corrosive environments, exhibits such high corrosion resistance that it routinely surpasses 1500 hours when subjected to ASTM B-117 salt spray testing.

Our fully automated barrel plating equipment applies a uniform finish. Environmentally friendly, the process uses a trivalent chromium passivate to form a corrosion resistant, electrically conductive, and weatherproof coating that withstands even the harshest, sulfur-enhanced environments. The finish also exhibits excellent lubricity, ductility, and solderability, even after months of storage.

Able to handle quantities from prototypes to large scale production runs with 1–5 day lead times, our tin-zinc plating services are suitable for parts used in transportation, construction, mining, and marine applications, and meets the requirements for many auto manufacturer specifications. Our ISO 9001-2008 and ISO 17025 certified facilities are equipped to handle the needs of the most demanding applications.

To learn more about our tin-zinc plating services read below, or contact us today to find out how we can help you with your application.

  • Benefits & Limitations
  • Fully automated processing equipment
  • No hexavalent chromium
  • Both tin and zinc are environmentally friendly
  • System plates directly onto hardened surfaces
  • System has excellent throwing power resulting in relatively uniform thicknesses in deep recesses
  • Excellent lubricity
  • Superior ductility allows for secondary bending and crimping while maintaining high corrosion resistance
  • High corrosion resistance, routinely surpasses 1500 hrs to ASTM B-117 when our trivalent chromium passivate (Corroguard) is applied
  • Does not form voluminous white corrosion products
  • Excellent solderability even after months of storage
  • Demonstrates good resistance to sulfur enhanced atmospheres

Where is Tin-Zinc used?

  • > 1000hrs of corrosion resistance
  • Aircraft
  • Appliances
  • Automotive
  • Construction fasteners
  • Electrical connectors and fasteners
  • Firefighting equipment
  • Marine equipment
  • Mining Industry
  • Railway equipment
  • Refuse equipment
  • Transportation segment (busses, semis, light truck )
  • These are just a few examples, please inquire for additional information.

Industry Standards

  • ISO 9001-2008 – International Organization for Standardization
  • ISO 17025 – International Organization for Standardization

Plating Characteristics

  • Appearance Improvement
  • Chemical Resistant
  • Close Tolerance
  • Corrosion Resistant
  • Electrically Conductive
  • Lubrication
  • Nonreflective
  • Protective
  • Weather Proofing

Production Volume

  • Specialty Production Shop
  • Prototype
  • Low Volume
  • Small Run
  • High Volume
  • Large Run
  • Long Run
  • Large Scale Production Volume Run

Typical Lead Times Available

  • Minimum ~ 1 Day
  • Maximum ~ 5 Days


  • Barrel

Automation Capabilities

  • Computer Controlled Process
  • Robotic Load/Unload/Transfer

Testing Ability

  • X-Ray
  • Atomic Absorption
  • Salt Spray
  • Adhesion
  • Torque and Tension
  • Edymag



  • HES D 2003-05


  • WSE M1P93 A-1, A-2, A-3, A-4
  • WSS M1P95 A-1, A-2, A-3, A-4


  • MES CG 310


  • TSH 6526G


  • PS 8956 E

General Motors

  • GM6280
  • GMW 3200

Delphi Automotive

  • DX 550108
  • DX 550073