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ASTM B700-97(2002)

(Specification)

Standard Specification for Electrodeposited Coatings of Silver for Engineering Use

Standard Specification for Electrodeposited Coatings of Silver for Engineering Use

SCOPE
1.1 This specification covers requirements for electrodeposited coatings of silver used for engineering purposes that may be mat, bright, or semibright and are not less than 98% silver purity.  
1.2 Coatings of silver covered by this specification are usually employed for solderable surfaces, electrical contact characteristics, high electrical and thermal conductivity, thermocompression bonding, wear resistance of load-bearing surfaces, and special reflectivity.  
1.3 In the Appendixes important characteristics of electrodeposited silver coatings are briefly described which must be considered when used in engineering applications, namely electrical conductivity (see Appendix X1), silver migration (see Appendix X2), thickness (see Appendix X3), hardness (see Appendix X4), and atmospheric tarnish (see Appendix X5).  
1.4 The following hazards caveat pertains only to the test methods section of this specification: 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-May-1997
ICS
25.220.40 - Metallic coatings
Technical Committee
B08 - Metallic and Inorganic Coatings
Drafting Committee
B08.04 - Precious Metal Coatings
Current Stage
Ref Project

Relations

Replaces
ASTM B700-97 - Standard Test Method for Electrodeposited Coatings of Silver for Engineering Use
Effective Date
10-May-1997
Replaced By
ASTM B700-08 - Standard Specification for Electrodeposited Coatings of Silver for Engineering Use
Effective Date
01-Aug-2008

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ASTM B700-97(2002) - Standard Specification for Electrodeposited Coatings of Silver for Engineering UseASTM B700-97(2002) - Standard Specification for Electrodeposited Coatings of Silver for Engineering Use
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ASTM B700-97(2002) - Standard Specification for Electrodeposited Coatings of Silver for Engineering Use
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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
Designation: B 700 – 97 (Reapproved 2002)
Standard Specification for
1
Electrodeposited Coatings of Silver for Engineering Use
This standard is issued under the fixed designation B 700; 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.
1. Scope B 343 Practice for Preparation of Nickel for Electroplating
2
with Nickel
1.1 This specification covers requirements for electrodepos-
2
B 374 Terminology Relating to Electroplating
ited coatings of silver used for engineering purposes that may
B 481 Practice for Preparation of Titanium and Titanium
be mat, bright, or semibright and are not less than 98 % silver
2
Alloys for Electroplating
purity.
B 482 Practice for Preparation of Tungsten and Tungsten
1.2 Coatings of silver covered by this specification are
2
Alloys for Electroplating
usually employed for solderable surfaces, electrical contact
B 487 Test Method for Measurement of Metal and Oxide
characteristics, high electrical and thermal conductivity, ther-
Coating Thicknesses by Microscopical Examination of a
mocompression bonding, wear resistance of load-bearing sur-
2
Cross Section
faces, and spectral reflectivity.
B 499 Test Method for Measurement of Coating Thick-
1.3 In the Appendixes important characteristics of elec-
nessesbytheMagneticMethod:NonmagneticCoatingson
trodeposited silver coatings are briefly described which must
2
Magnetic Basis Metals
be considered when used in engineering applications, namely
B 504 Test Method for Measurement of Thickness of Me-
electrical conductivity (see Appendix X1), silver migration
2
tallic Coatings by the Coulometric Method
(seeAppendixX2),thickness(seeAppendixX3),hardness(see
B 507 Practice for Design ofArticles to be Electroplated on
Appendix X4), and atmospheric tarnish (see Appendix X5).
2
Racks
1.4 The following hazards caveat pertains only to the test
B 542 Terminology Relating to Electrical Contacts and
methods section of this specification: This standard does not
3
Their Use
purport to address the safety concerns, if any, associated with
B 567 Test Method for Measurement of Coating Thickness
its use. It is the responsibility of the user of this standard to
2
by the Beta Backscatter Method
establish appropriate safety and health practices and deter-
B 568 Test Method for Measurement of Coating Thickness
mine the applicability of regulatory limitations prior to use.
2
by X-Ray Spectrometry
2
2. Referenced Documents B 571 Test Methods for Adhesion of Metallic Coatings
B 578 Test Method for Microhardness of Electroplated
2.1 ASTM Standards:
2
Coatings
B 183 Practice for Preparation of Low-Carbon Steel for
2
B 579 Specification for Electrodeposited Coatings of Tin-
Electroplating
2
Lead Alloy (Solder Plate)
B 242 Practice for Preparation of High-Carbon Steel for
2
B 602 Test Method for Attribute Sampling of Metallic and
Electroplating
2
Inorganic Coatings
B 252 Guide for Preparation of ZincAlloy Die Castings for
2
B 678 Test Method for Solderability of Metallic-Coated
Electroplating Conversion Coatings
2
Products
B 253 Guide for Preparation of Aluminum Alloys for Elec-
2
B 697 Guide for Selection of Sampling Plans for Inspection
troplating
2
of Electrodeposited Metallic and Inorganic Coatings
B 254 Practice for Preparation of and Electroplating on
2
B 762 Method of Variables Sampling of Metallic and Inor-
Stainless Steel
2
ganic Coatings
B 281 Practice for Preparation of Copper and Copper-Base
2
B 849 Specification for Pre-treatments of Iron or Steel for
Alloys for Electroplating and Conversion Coatings
2
2
Reducing the Risk of Hydrogen Embrittlement
B 322 Practice for Cleaning Metals Prior to Electroplating
B 850 Guide for Post-Coating Treatments of Steel for Re-
2
ducing the Risk of Hydrogen Embrittlement
1
This specification is under the jurisdiction of ASTM Committee B08 on 4
D 3951 Practice for Commercial Packaging
Metallic and Inorganic Coatings and is the direct responsibility of Subcommittee
B08.08.02 on Precious Metal Coatings.
Current edition approved May 10, 1997. Published February 1998. Originally
3
published as B 700 – 81. Last previous edition B 700 – 90. Annual Book of ASTM Standards, Vol 02.04.
2 4
Annual Book of ASTM Standards, Vol 02.05. Annual Book of ASTM Standards, Vol 15.09.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
1

---------------------- Page: 1 ----------------------
B 700 – 97 (2002)
stated function of the coating and are acceptable to the purchaser (see
E 1004 Practice for Determining Electrical Conductivity
5
Appendix X1).
Using the Electromagnetic (Eddy-Curr
...

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Platinum  
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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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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.  
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1.2.1 Hardness, strength, and ductility,  
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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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