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ASTM B633-98e1

(Specification)

Standard Specification for Electrodeposited Coatings of Zinc on Iron and Steel

Standard Specification for Electrodeposited Coatings of Zinc on Iron and Steel

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  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.

General Information

Status
Historical
Publication Date
09-Nov-1998
ICS
25.220.40 - Metallic coatings
Technical Committee
B08 - Metallic and Inorganic Coatings
Drafting Committee
B08.06 - Soft Metals
Current Stage
Ref Project

Relations

Replaces
ASTM B633-98 - Standard Specification for Electrodeposited Coatings of Zinc on Iron and Steel
Effective Date
10-Nov-1998
Replaced By
ASTM B633-07 - Standard Specification for Electrodeposited Coatings of Zinc on Iron and Steel
Effective Date
15-Jan-2007
Referred By
ASTM F782-19 - Standard Specification for Doors, Furniture, Marine
Effective Date
10-Nov-1998
Referred By
ASTM F1941/F1941M-16 - Standard Specification for Electrodeposited Coatings on Mechanical Fasteners, Inch and Metric
Effective Date
10-Nov-1998
Referred By
ASTM F1548-01(2023) - Standard Specification for Performance of Fittings for Use with Gasketed Mechanical Couplings Used in Piping Applications
Effective Date
10-Nov-1998
Referred By
ASTM A193/A193M-23 - Standard Specification for Alloy-Steel and Stainless Steel Bolting for High Temperature or High Pressure Service and Other Special Purpose Applications
Effective Date
10-Nov-1998
Referred By
ASTM B745/B745M-15(2021) - Standard Specification for Corrugated Aluminum Pipe for Sewers and Drains
Effective Date
10-Nov-1998
Referred By
ASTM D5363-16 - Standard Specification for Anaerobic Single-Component Adhesives (AN)
Effective Date
10-Nov-1998
Referred By
ASTM F1476-07(2019) - Standard Specification for Performance of Gasketed Mechanical Couplings for Use in Piping Applications
Effective Date
10-Nov-1998
Referred By
ASTM D6255/D6255M-18 - Standard Specification for Steel or Aluminum Slotted Angle Crates
Effective Date
10-Nov-1998
Referred By
ASTM F1145-05(2022) - Standard Specification for Turnbuckles, Swaged, Welded, Forged
Effective Date
10-Nov-1998
Referred By
ASTM F1387-23 - Standard Specification for Performance of Piping and Tubing Mechanically Attached Fittings
Effective Date
10-Nov-1998
Referred By
ASTM A194/A194M-23 - Standard Specification for Carbon Steel, Alloy Steel, and Stainless Steel Nuts for Bolts for High Pressure or High Temperature Service, or Both
Effective Date
10-Nov-1998

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ASTM B633-98e1 - Standard Specification for Electrodeposited Coatings of Zinc on Iron and SteelASTM B633-98e1 - Standard Specification for Electrodeposited Coatings of Zinc on Iron and Steel
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ASTM B633-98e1 - Standard Specification for Electrodeposited Coatings of Zinc on Iron and Steel
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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
e1
Designation: B 633 – 98
Standard Specification for
1
Electrodeposited Coatings of Zinc on Iron and Steel
This standard is issued under the fixed designation B 633; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (e) indicates an editorial change since the last revision or reapproval.
This standard has been approved for use by agencies of the Department of Defense.
1
e NOTE—In Section 2 and Paragraph 8.1.5, Guide F 1470 was incorrectly cited as Guide F 1740.This was editorially corrected
in August 2001.
4
1. Scope B 374 Terminology Relating to Electroplating
B 487 Test Method for Measurement of Metal and Oxide
1.1 This specification covers requirements for electrodepos-
Coating Thicknesses by Microscopical Examination of a
ited zinc coatings applied to iron or steel articles to protect
4
Cross Section
them from corrosion. It does not cover electrodeposited zinc-
B 499 Test Method for Measurement of Coating Thick-
coated steel wire or sheets (see Specification A 591/A 591M
nessesbytheMagneticMethod:NonmagneticCoatingson
for sheets).
4
Magnetic Basis Metals
1.2 The coatings are provided in four standard thickness
B 504 Test Method for Measurement of Thickness of Me-
classes (4.1), in the as-plated condition or with one of three
4
tallic Coatings by the Coulometric Method
types of supplementary finish (4.2).
B 567 Test Method for Measurement of Coating Thickness
1.3 This standard does not purport to address all of the
4
by the Beta Backscatter Method
safety concerns, if any, associated with its use. It is the
B 568 Test Method for Measurement of Coating Thickness
responsibility of the user of this standard to establish appro-
4
by X-Ray Spectrometry
priate safety and health practices and determine the applica-
4
B 571 Test Methods for Adhesion of Metallic Coatings
bility of regulatory limitations prior to use.
B 602 Test Method for Attribute Sampling of Metallic and
4
2. Referenced Documents Inorganic Coatings
B 697 Guide for Selection of Sampling Plans for Inspection
2.1 ASTM Standards:
4
of Electrodeposited Metallic and Inorganic Coatings
A 591/A591M Specification for Steel Sheet, Electrolytic
2
B 762 Test Method of Variables Sampling of Metallic and
Zinc-Coated, for Light Coating Mass Applications
4
3
Inorganic Coatings
B 117 Practice for Operating Salt Spray (Fog) Apparatus
D 2092 Guide for Treatment of Zinc-Coated (Galvanized)
B 183 Practice for Preparation of Low-Carbon Steel for
5
4
Steel Surfaces for Painting
Electroplating
F 1470 GuideforFastenerSamplingforSpecifiedMechani-
B 201 Practice for Testing Chromate Coatings on Zinc and
6
4
cal Properties and Performance Inspection
Cadmium Surfaces
2.2 Military Standard:
B 242 Practice for Preparation of High-Carbon Steel for
7
4
MIL-STD-1312 Fastener Tests, Methods (Test 12)
Electroplating
B 254 Practice for Preparation of and Electroplating on
3. Terminology
4
Stainless Steel
3.1 Definitions—Definitions of the terms used in this speci-
B 320 Practice for Preparation of Iron Castings for Electro-
4
fication are in accordance with Terminology B 374.
plating
4
B 322 Practice for Cleaning Metals Prior to Electroplating
4. Classification
4.1 Thickness—The coating shall be provided in the four
1
This specification is under the jurisdiction of ASTM Committee B08 on thickness classes defined in Table 1.
Metallic and Inorganic Coatings and is the direct responsibility of Subcommittee
B08.08.04 on Light Metals.
Current edition approved Nov. 10, 1998. Published March 1999. Originally
5
published as B 633 – 78. Last previous edition B 633 – 85 (1994). Annual Book of ASTM Standards, Vol 06.02.
2 6
Annual Book of ASTM Standards, Vol 01.06. Annual Book of ASTM Standards, Vol 01.08.
3 7
Annual Book of ASTM Standards, Vol 03.02. AvailablefromStandardizationDocumentsOrderDesk,Bldg.4SectionD,700
4
Annual Book of ASTM Standards, Vol 02.05. Robbins Ave., Philadelphia, PA 19111-5094, Attn: NPODS.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
1

---------------------- Page: 1 ----------------------
B 633
TABLE 1 Thickness Classes for Coatings
appropriate recommended practices be used: B 183, B 242,
A
Classification Number B 254, B 320, and B 322.
Thickness, min
B,C
and Conversion Service Condition
6.4 High-Tensile Strength Metals—Unless otherwise speci-
µm
Coating Suffix
fied, high strength steels having a tensile strength greater than
Fe/Zn 25 SC 4 (very severe) 25
1700 MPa shall not be electroplated.
Fe/Zn 12 SC 3 (severe) 12
6.5 Stress Relief—All steel parts having an ultimate tensile
Fe/Zn 8 SC 2 (moderate) 8
Fe/Zn 5 SC 1 (mild) 5
strengthof1000MPaandabove,andthathavebeenmachi
...

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Gold  
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Palladium  
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Platinum  
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Palladium-Nickel  
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Rhodium  
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Ruthenium  
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1.1 This guide covers the use of the dropping test to measure the thickness of electrodeposited zinc, cadmium, copper, and tin coatings.  
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This specification covers the requirements for electroplated nickel coatings applied to metal products for engineering applications (for example, for use as a buildup for mismachined or worn parts), for electronics applications (including as underplates in contacts or interconnections), and in certain joining applications. Coatings shall be available in any one of the following types: Type 1, coatings electroplated from solutions not containing hardeners, brighteners, or stress control additives; Type 2, electrodeposits used at moderate temperatures, and contain sulfur or other codeposited elements or compounds that are present to increase the hardness, refine grain structure, or control internal stress; and Type 3, electroplates containing dispersed submicron particles such as silicon carbide, tungsten carbide, and aluminum oxide that are present to increase hardness and wear resistance at specified temperatures. Metal parts shall undergo pre- and post-coating treatments to reduce the risk of hydrogen embrittlement, and peening. Coatings shall be sampled, tested, and conform accordingly to specified requirements as to appearance, thickness (measured either destructively by microscopical or coulometric method, or nondestructively by magnetic or X-ray method), adhesion (examined either by bend, file, heat and quench, or push test), porosity (assessed either by hot water, ferroxyl, or flowers of sulfur test), workmanship, and hydrogen embrittlement relief.
SCOPE
1.1 This specification covers the requirements for electroplated nickel coatings applied to metal products for engineering applications, for example, for use as a buildup for mismachined or worn parts, for electronic applications, including as underplates in contacts or interconnections, and in certain joining applications.  
1.2 Electroplating of nickel for engineering applications (Note 1) requires technical considerations significantly different from decorative applications because the following functional properties are important:  
1.2.1 Hardness, strength, and ductility,  
1.2.2 Wear resistance,  
1.2.3 Load bearing characteristics,  
1.2.4 Corrosion resistance,  
1.2.5 Heat scaling resistance,  
1.2.6 Fretting resistance, and  
1.2.7 Fatigue resistance.  
Note 1: Functional electroplated nickel coatings usually contain about 99 % nickel, and are most frequently electrodeposited from a Watts nickel bath or a nickel sulfamate bath. Typical mechanical properties of nickel electroplated from these baths, and the combined effect of bath operation and solution composition variables on the mechanical properties of the electrodeposit are given in Guide B832. When electroplated nickel is required to have higher hardnesses, greater wear resistance, certain residual stress values and certain leveling characteristics, sulfur and other substances are incorporated in the nickel deposit through the use of certain addition agents in the electroplating solution. For the effect of such additives, see Section 4 and Annex A3. Cobalt salts are sometimes added to the plating solution to produce harder nickel alloy deposits.  
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1.3 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.  
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