This specification covers requirements for electrodeposited zinc coatings applied to iron or steel articles to protect them from corrosion. It does not cover electrodeposited zinc coated steel wire or sheets (see Specification A 591/A 591M for sheets).
This specification shall govern the zinc plating of parts which do not
require a bake to relieve hydrogen embrittlement. This specification is not
intended to comply with QQ-Z-325 or AMS 2403 and is for use on ground
vehicle equipment only.
This works standard applies to inorganic coating systems on metallic materials 1) (e.g. fasteners as standard parts and drawing parts and their accessory parts, brackets, angles, hinges ect.).
This specification defines performance requirements for the electrolytic deposition of zinc coating with a passivation layer containing trivalent chromium where enhanced corrosion protection for ferrous surfaces is desired. This specification applies to either a rack or a barrel plating process. The coating material specified herein shall contain no hexavalent chromium as it is forbidden by applicable government and industry regulations.
This specification defines the requirements for trivalent chrome conversion treatments of zinc or zinc alloy plating applied to ferrous surfaces. This passivation of the plating is to impart protection against the formation of white corrosion products. No hexavalent chromium content is allowed. It is expected that the conversion coating be formulated for the particular plating used.
The object of this treatment is to form a uniform continuous coating of zinc
with a trivalent chromate dip on steel, iron, or brass parts to protect them
This specification covers Case Corporation requirements for zinc plated finishes. They are used primarily as a protective coating on ferrous baked materials and are intended to extend the corrosion resistance to the substrate.
This specification defines the requirements for electroplated zinc, mechanical plated zinc, and plating zinc-nickel with a supplementary hexavalent or trivalent chromium conversion coating. This is a multiple variation specificaiton.
This standard specifies the plating and performance requirements for various zinc-cobalt, zinc-nickel, and zinc-iron alloy electrodeposits and their associated chromate coatings, used for enhanced corrosion resistance on ferrous parts.
This standard outlines the procedures and requirements for electroplated zinc, and mechanically plated zinc coatings on iron and steel parts for corrosion protection. This standard provides the procedures and requirements for producing electroplated zinc deposits. Parts with a hardness of HRC 32 or higher MUST be electroplated according to PS-4220 which requires a mandatory bake operation to relieve hydrogen embrittlement. PS-4220 is identical to PS-79 respectively, except for the mandatory bake. This standard also covers the requirements for mechanically plated zinc deposits. The following Process Standards, which were formerly all individual standards and are still referenced.
This specification establishes requirements for an electrolytic zinc coating
with a chromate conversion treatment, with or without sealer, applied to
iron or steel parts.
unless otherwise specified, the requirements in the specification apply to
both Option A and Option B.
This specification covers the electrolytic plating of zinc for the purpose
of corrosion protection of iron or steel surfaces. If required,
supplementary chromate finishes will be specified.
This specification allows the use of hexavalent chromium. The hexavalent chromium free versions of this specification are DX551200 and DX221600. Specification DX550200 describes the basic requirements of electroplated zinc coatings on iron and steel substrates. An option to use mechanical plating is also included as part of this specification.
This specification describes the procedures for evaluating zinc chromate
conversion coating finishes metallic parts used by Delta Faucet Company.
The purpose of this standard is to specify the product, process and
performance requirements for zinc plating of steel Eaton Hydraulics fluid
conveyance products. Due to additional expectations that are dependent on
both brand and geographic location, two appendices were created to
supplement ES 2751. Table I outlines which document controls each
combination of brand and region.
This specification defines performance requirements for the electrolytic or non-electrolytic disposition of zinc coatings. This specification was released originally to define performance requirements for zinc coatings where corrosion protective and/or decorative finishes on ferrous surfaces are required. A supplementary hexavalent chromium free treatment may be applied to zinc coated parts to retard the formation of white corrosion products.
These specifications defined the performance of an electorlytic or
non-electrolytic plating of zinc, followed bu a trivalent chromium
conversion, followed by the application of a topcoat sealer.
This specification covers the basic requirements for electroplated zinc
applied to iron and steel substrates with provision for plating thickness,
use or non-use of supplementary treatments and corrosion resistance.
Provision is also made to specify mechanical plating. GMNA MATSPC approvals
for this finish are specific to the postsupplementary
treatment (Suffix) evaluated for initial chemical/applicator approval
This specification shall state the specifications for black zinc protective
coatings. All products or part numbers which have this SI number and the
appropriate finish number stated on the latest print revision shall have a
finish which meets the requirements.
This standard specifies the electroplating, (hereinafter referred to as
“plating”) to be performed on parts for purposes of corrosion prevention,
rust prevention, and decoration.
This specification covers a decorative zinc plating which is suitable for
steel fasteners or other small steel parts requiring a black finish and
moderate corrosion resistance. Three classes of coating thickness are
JDS 117 specifies requirements for electroplated coatings of zinc and of
zinc cobalt alloy on ferrous parts for protection against corrosion. JDS 117
does not apply to coatings applied to sheet, strip or wire in the
unfabricated form, or to coil springs. It does not specify the surface
condition of the base metal prior to coating, coating allowances (if any)
for threaded parts, or thread limits either before or after coating (See
This standard prescribes the specifications that govern the corrosion
preventive coating alternatives acceptable for fluid handling steel tubing.
It also provides the nomenclature to specify these alternatives for print
This standard applies only to steel tubing designed to carry fuel, coolant,
hydraulic, or air conditioning fluids. It does not cover tubing designed to
carry exhaust gasses or to any tubing made of materials other than steel.
This standard does not over raw material specifications, cleanliness class,
or requirements for fittings used in tube assemblies.
This DBL describes the special requirements, properties and planning data
for parts with electrodeposited zinc and zinc alloy coatings and subsequent
post treatment. Although the End-of-Life Vehicle Act does not currently
apply to heavy-duty trucks or buses, for reasons of variant reduction in new
designs, consideration should be given to also specifying Cr(VI)-free
surfaces for commercial vehicle parts. The function properties shall be
checked when changing to Cr(VI)-free surfaces. For notes on corrosion
resistance and recommendations for various application cases, see Tables 2
This specification covers Navistar’s requirements for electrodeposited zinc
coatings on iron and steel substrates. Provision is also made to specify
mechanical plated zinc coatings by the addition of a suffix “M” to the class
This standard describes electroplated coatings of zinc plating and chromate
films hereinafter referred to as plating that are applied to iron and steel
for corrosion protection and appearance.
1. This standard applies to the significant surface that is defined as the
surface for which the plating is most important. Corrosion protective
qualities, for parts other than the significant surface, shall be determined
bu agreement between the parties concerned.
2. The significant surface shall be as specified by the drawing or the
3. The material specified in this NES shall satisfy NES M 0301 “Substance
This specification defines the performance criteria and test method for evaluating zinc platings over ferrous substrates.
Specification for the pre-treatment of metal to facilitate rubber to metal
adhesion and enhance corrosion resistance.
This engineering specification covers the application for zinc coating with
a supplementary chromate conversion coating (ASTM B633)
This standard applies to the identification of general surface protection
types of vehicle parts and units in drawings and technical documentation.
Separate Technology Supply Specifications (TL Standards) apply to special
surface protection types without identification by surface protection code
(see Appendix A.2.)