ASTM-B633 2011(Redline)

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B633-11 Standard Specification for Electrodeposited Coatings of Zinc on Iron and Steel (Redline)

Published By	Publication Date	Number of Pages
ASTM	2011	7

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Description

Abstract

This specification establishes the requirements for electrodeposited zinc coatings applied to iron or steel articles for corrosion protection purposes. Electrodeposited zinc-coated steel wires or sheets are not covered here. The coatings shall be provided in four standard thickness classes in the as-plated condition or with one of three types of supplementary finishes. The surfaces of the articles shall under go pre-plating basis metal cleaning, pre- and post-coating treatment for reducing the risk of hydrogen embrittlement, and reactivation and supplementary treatments. Coatings should be sampled, prepared, tested and conform accordingly to specified requirements as to appearance (luster and workmanship), thickness, adhesion, corrosion resistance, and hydrogen embrittlement.

This abstract is a brief summary of the referenced standard. It is informational only and not an official part of the standard; the full text of the standard itself must be referred to for its use and application. ASTM does not give any warranty express or implied or make any representation that the contents of this abstract are accurate, complete or up to date.

1. Scope

1.1 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 A591/A591M for sheets).

1.2 The coatings are provided in four standard thickness classes (4.1), in the as-plated condition or with one of three types of supplementary finish (4.2).

1.3 High strength metals, unless otherwise specified, including high strength steels having a tensile strength greater than 1700 MPa (247 ksi R _c 46) shall not be electroplated.

1.4 The values stated in SI units shall be regarded as standard.

1.5 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

1.6 This standard has been revised to address RoHS requirements that seek to limit the exposure of workers and the public from exposure to toxic metals. Additional types have been added to permit non-chromate passivate treatments to be used in replacement of hexavalent chromium.

2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.

ASTM Standards

A591/A591M Specification for Steel Sheet, Electrolytic Zinc-Coated, for Light Coating Weight [Mass] Applications B117 Practice for Operating Salt Spray (Fog) Apparatus B183 Practice for Preparation of Low-Carbon Steel for Electroplating B201 Practice for Testing Chromate Coatings on Zinc and Cadmium Surfaces B242 Guide for Preparation of High-Carbon Steel for Electroplating B254 Practice for Preparation of and Electroplating on Stainless Steel B320 Practice for Preparation of Iron Castings for Electroplating B322 Guide for Cleaning Metals Prior to Electroplating B374 Terminology Relating to Electroplating B487 Test Method for Measurement of Metal and Oxide Coating Thickness by Microscopical Examination of Cross Section B499 Test Method for Measurement of Coating Thicknesses by the Magnetic Method: Nonmagnetic Coatings on Magnetic Basis Metals B504 Test Method for Measurement of Thickness of Metallic Coatings by the Coulometric Method B567 Test Method for Measurement of Coating Thickness by the Beta Backscatter Method B568 Test Method for Measurement of Coating Thickness by X-Ray Spectrometry B571 Practice for Qualitative Adhesion Testing of Metallic Coatings B602 Test Method for Attribute Sampling of Metallic and Inorganic Coatings B697 Guide for Selection of Sampling Plans for Inspection of Electrodeposited Metallic and Inorganic Coatings B762 Test Method of Variables Sampling of Metallic and Inorganic Coatings B849 Specification for Pre-Treatments of Iron or Steel for Reducing Risk of Hydrogen Embrittlement B850 Guide for Post-Coating Treatments of Steel for Reducing the Risk of Hydrogen Embrittlement D2092 Guide for Preparation of Zinc-Coated (Galvanized) Steel Surfaces for Painting F1470 Practice for Fastener Sampling for Specified Mechanical Properties and Performance Inspection

Military Standard

MIL-STD-1312 Fastener Tests, Methods (Test 12)

Keywords

electrodeposited coatings, zinc; electrodeposited coatings, passivates, chromates: Iron products (gener

Additional information

Standard Title	B633-11 Standard Specification for Electrodeposited Coatings of Zinc on Iron and Steel (Redline)
Published Code	ASTM
Publication Date	2011
Pages Count	7

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ASTM-B633 2011(Redline)

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