Alloys & specifications / Sn–Zn

Tin Zinc
plating.

Conductivity meets corrosion resistance.

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Tin Zinc plated components

The finish

Tin Zinc
barrel plating.

  • Electrical conductivity
  • Lubricity and ductility
  • Solderability after storage
  • Uniform finish from fully automated barrel equipment

Plating Technology provides fully automated tin zinc barrel plating in Dayton, Ohio, for fasteners and other components that need electrical conductivity and corrosion resistance.

Our barrel plating equipment applies a tin zinc finish with a trivalent chromium passivate. The finish offers lubricity, ductility, and solderability for applications in transportation, construction, mining, and marine environments.

We support prototypes through large-scale production. Coating thickness, post-treatment, corrosion-testing requirements, and delivery timing are reviewed against your drawing and production needs. Our ISO 9001-certified quality management system and ISO/IEC 17025-accredited laboratory support process control and testing.

Tin Zinc performance & process capabilities

Protection. Versatility. Performance.

Performance benefits

  • Fully automated processing equipment
  • No hexavalent chromium
  • Both tin and zinc are environmentally friendly
  • System plates directly onto hardened surfaces
  • Excellent throwing power for relatively uniform thicknesses in deep recesses
  • Excellent lubricity
  • Superior ductility allows secondary bending and crimping while maintaining high corrosion resistance
  • Routinely surpasses 1,500 hours to ASTM B-117 when the trivalent chromium passivate (Corroguard) is applied
  • Does not form voluminous white corrosion products
  • Excellent solderability even after months of storage
  • Good resistance to sulfur-enhanced atmospheres

Process capabilities

Plating characteristics
  • Appearance improvement
  • Chemical resistance
  • Close tolerance
  • Corrosion resistance
  • Electrical conductivity
  • 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 approximately 1 day
  • Maximum approximately 5 days
Equipment
  • Barrel
Automation capabilities
  • Computer-controlled process
  • Robotic load/unload/transfer
Testing ability
  • X-ray (thickness and alloy composition)
  • Salt spray
  • Adhesion
  • Torque and tension
Applications
  • Aircraft
  • Appliances
  • Automotive
  • Construction fasteners
  • Electrical connectors and fasteners
  • Firefighting equipment
  • Marine equipment
  • Mining
  • Railway equipment
  • Refuse equipment
  • Transportation: buses, semis, and light trucks

Technical reference

Tin Zinc
plating specifications.

Manufacturer and industry specifications for Tin Zinc. Finish, coating-system, and scope qualifiers are shown in parentheses where needed.

Tin Zinc plating specifications
Manufacturer / standardSpecifications
BöllhoffFind related finishesRS10-04 TZGRS10-04 TZC

Tin-zinc-designated variants only. The RS10-04 family also covers other finishes; confirm the complete suffix and lubrication requirements.

Delphi AutomotiveFind related finishesDX 550073

Tin-zinc requirements only; confirm the drawing revision and post-treatment.

FordFind related finishesWSE-M1P93-A1WSE-M1P93-A2WSE-M1P93-A3WSE-M1P93-A4WSS-M1P95-A2WSS-M1P95-A4

Electroplated tin-zinc requirements only; confirm the drawing suffix, thickness, and post-treatment.

General MotorsFind related finishesGM 6280M (SnZn)GMW 3200

GM 6280M is a legacy reference; confirm the tin-zinc requirements and acceptable post-treatment.

HondaFind related finishesHES D 2003

Applicable tin-zinc coating designations only; confirm the required revision.

International / NavistarFind related finishesCEMS G-23 (legacy)

Historical tin-zinc drawing reference. Confirm the required revision or successor MPAPS specification during quotation.

ISOFind related finishesISO 4042 (SnZn dimensions)

For tin-zinc, ISO 4042 covers dimensional requirements for fasteners with ISO metric threads.

MazdaFind related finishesMES CG 310

Applicable tin-zinc coating designations only.

SAE InternationalFind related finishesSAE AMS 2434
Stellantis (Chrysler / FCA)Find related finishesPS-8956PS-13285 (SnZn basecoat)

Confirm the required revision; older drawings may call out PS-8956E. PS-13285 specifies a tin-zinc basecoat with an organic topcoat; confirm the complete coating system.

TeslaFind related finishesTM-5018

Tin-zinc coating-system requirements; confirm the current drawing revision and supplementary treatment.

ToyotaFind related finishesTSH 6526GTSH 6526G-AC

A specification listing does not indicate current OEM approval, a customer relationship, or endorsement.

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Before you specify

Tin Zinc plating questions.

Review the finish, documentation, and application requirements with our team.

What applications use tin zinc plating?

Tin zinc is used for fasteners and other electrically conductive components exposed to corrosive environments. Plating Technology supports applications in transportation, construction, mining, and marine environments. Suitability must be reviewed against the part drawing and service requirements.

Discuss your application

How are tin zinc corrosion requirements verified?

Our laboratory performs neutral salt spray testing to ASTM B117. Specify the required test duration, acceptance criteria, and testing frequency during quotation so they can be reviewed for the complete coating system.

Explore our testing capabilities

What should I include in a tin zinc plating RFQ?

Include the part drawing, substrate, finish specification and revision, coating thickness, post-treatment, production volume, and delivery needs. Identify any required approvals or additional testing so our team can review the complete requirement.

Request a tin zinc quote

For supporting documentation, review our quality and testing capabilities and certificates and accredited scope.