【国外标准】 Standard Specification for Cadmium or Zinc Chromate Organic Corrosion Protective Coating for Fasteners (Withdrawn 2009)

This specification covers the basic performance requirements and associated test methods for eight grades of electrolytic or mechanical coatings of cadmium or zinc that have been followed by a chromate and baked organic coating for ferrous and nonferrous fasteners. The coatings shall be tested, and conform accordingly to requirements for thickness, corrosion resistance, and adhesion.1.1 This specification covers the basic performance requirements for an electrolytic or mechanical coating of cadmium or zinc followed by a chromate and baked organic coating for ferrous and nonferrous fasteners.1.2 There are eight grades available under this standard; four for zinc and four for cadmium.1.3 This standard is intended primarily for fasteners such as nuts, bolts, and screws that require corrosion protection.