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Zinc Plating Services

Zinc Plating

Zinc Plating Overview

Zinc is a bluish-white metal, which if electro deposited with appropriate brighteners, somewhat resembles chromium in appearance. 

Zinc Plating / Electrolytic Zinc Coatings are used to protect and improve the appearance of ferrous metals, (i.e. iron & steel) as a corrosion barrier.  The subsequent application of chromate conversion coatings over zinc plating, as well as post-plate sealers, give additional protection against corrosion particularly under high humidity and moisture conditions.

Eastern Plating's success comes from providing zinc plating that consistently meet our customers' strict plating quality and turnaround requirements of the automotive platingappliance plating, furniture plating and consumer products markets.

Zinc Plating Capacities (per finish type)

Barrel Zinc Plating:  Up to 30,000 pounds per day.

Rack Zinc Plating:  Up to 70,000 square feet per day 

Common Applications & Specifications of Zinc Plating

The relatively low cost, protective nature, and attractive appearance of zinc plating make it a popular coating for nuts, bolts, washers, metal stampings, and automotive components, fabricated parts for industrial applications, and also serves as an effective undercoat for paints.

Commercially, zinc plating is deposited in thicknesses ranging from 0.0001”- 0.0005”, depending upon the intended application and the corrosion protection required, the majority of which is 0.0001”-0.0003”, commonly known as “Commercial Zinc.”
 
Atomic Number.....................................................................30
Atomic Weight......................................................................65.38
Crystal Structure..................................................................Close-packed Hexagonal
Color..................................................................................Bluish White
Density...............................................................................7100 kg/m
Melting Point........................................................................419.5°C
Boiling Point.........................................................................907°C
Specific Heat Capacity...........................................................389.8J/kg°C
Thermal Conductivity.............................................................112.2 W/m°C
Coefficient of Linear Expansion.................................................31.2 x 10-6/°C
Specific Electrical Resistance...................................................59 μΩmm
Magnetic Susceptibility...........................................................-0.157 x 10-6
Young's Modulus of Elasticity...................................................96.5 GPa
Tensile Strength....................................................................37Mpa (cast)
Hardness..............................................................................30 HV
Coefficient of Friction (on Zn in air)...........................................0.75
Coefficient of Friction (on Fe in air)...........................................0.55
  
Zinc Plating Corrosion Resistance Chart
Color Salt Spray Corrosion Resistant Level
Clear 24-140 hours
Yellow 72-200 hours
Olive Drab 96-240 hours
Black 72-160 hours