SELL YOUR PRODUCTS
*mydirectindustry  
English
  • Products
  • Catalogs
  • News & Trends
  • Exhibitions

Electrolytic zinc-plating
ISO 9001

electrolytic zinc-plating
electrolytic zinc-plating
Add to favorites
Compare this product
 

Characteristics

Type
electrolytic
Certifications
ISO 9001

Description

ZINC ASTM B633 Coating for ferrous metals. Either a bright or dull finish is acceptable. Bright zinc plating (electro-chloride) closely resembles bright chromium; however, bright zinc does not have the permanence of surface appearance. Zinc coated steel will no rust even when exposed by scratches because of the galvanic protection of the zinc. On weathering, zinc turns to a drab gray color. Zinc should be deposited directly on the base metal. Nickel is a permissible undercoat if base metal is a corrosion resisting steel. Parts having a hardness greater than RC-40 must be given a heat treatment prior to plating. Springs having a hardness over RC-40 must be post baked at 375F for 3 hours. TYPE I: No supplemental treatment TYPE II: Supplemental Yellow Chromate treatment. The primary use of chromate finish on zinc is to retard or prevent formation of white corrosion products on zinc surfaces. TYPE III: Supplemental Clear Chromate treatment. The primary use of chromate finish on zinc is to retard or prevent formation of white corrosion products on zinc surfaces. TYPE IV: Supplemental phosphate treatment. The primary purpose of phosphate coating on zinc is to provide a paint base. CLASS SC4: .00098" very severe service environment CLASS SC3: .00051" severe service environment CLASS SC2: .00031" external cabinetry CLASS SC1: .00020" internal electronic hardware EXAMPLE SPECIFICIATION: ZINC & CLEAR CHROMATE. REFERENCE ASTM B633 TYPE III CLASS SC1.
*Prices are pre-tax. They exclude delivery charges and customs duties and do not include additional charges for installation or activation options. Prices are indicative only and may vary by country, with changes to the cost of raw materials and exchange rates.