ASTM B634-14
(Specification)Standard Specification for Electrodeposited Coatings of Rhodium for Engineering Use
Standard Specification for Electrodeposited Coatings of Rhodium for Engineering Use
ABSTRACT
This specification covers the requirements for electrodeposited rhodium coatings for engineering applications, usually employed for their corrosion resistance, stable electrical contact resistance, wear resistance, reflectivity, and heat resistance. Coating shall be classified based on their thickness. Specimens shall undergo preparatory preplating procedures such as surface cleaning and stress relief treatment, as well as post-plating embrittlement relief process. Coatings shall be sampled, tested, and conform accordingly to specified requirements as to purity, appearance, adhesion, hydrogen embrittlement, reflectivity, and thickness (to be measured either nondestructively by beta backscatter method or X-ray fluorescence, or destructively by microscopical cross sectioning method).
SCOPE
1.1 This specification covers requirements for electrodeposited coatings of rhodium used for engineering purposes.
1.2 Coatings of rhodium covered by this specification are usually employed for their corrosion resistance, stable electrical contact resistance, wear resistance, reflectivity, and heat resistance.
1.3 Appendix X1 covers some typical applications for electrodeposited rhodium.
1.4 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this 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.
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Designation:B634 −14
Standard Specification for
1
Electrodeposited Coatings of Rhodium for Engineering Use
This standard is issued under the fixed designation B634; 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 (´) indicates an editorial change since the last revision or reapproval.
1. Scope B322 Guide for Cleaning Metals Prior to Electroplating
B343 Practice for Preparation of Nickel for Electroplating
1.1 This specification covers requirements for electrodepos-
with Nickel
ited coatings of rhodium used for engineering purposes.
B456 Specification for Electrodeposited Coatings of Copper
1.2 Coatings of rhodium covered by this specification are
Plus Nickel Plus Chromium and Nickel Plus Chromium
usually employed for their corrosion resistance, stable electri-
B481 Practice for Preparation of Titanium and Titanium
cal contact resistance, wear resistance, reflectivity, and heat
Alloys for Electroplating
resistance.
B482 Practice for Preparation of Tungsten and Tungsten
1.3 Appendix X1 covers some typical applications for Alloys for Electroplating
B487 Test Method for Measurement of Metal and Oxide
electrodeposited rhodium.
Coating Thickness by Microscopical Examination of
1.4 The values stated in SI units are to be regarded as
Cross Section
standard. No other units of measurement are included in this
B507 Practice for Design of Articles to Be Electroplated on
standard.
Racks
1.5 This standard does not purport to address all of the
B567 Test Method for Measurement of Coating Thickness
safety concerns, if any, associated with its use. It is the
by the Beta Backscatter Method
responsibility of the user of this standard to establish appro-
B568 Test Method for Measurement of Coating Thickness
priate safety and health practices and determine the applica-
by X-Ray Spectrometry
bility of regulatory limitations prior to use.
B571 Practice for Qualitative Adhesion Testing of Metallic
Coatings
2. Referenced Documents
B602 Test Method for Attribute Sampling of Metallic and
2.1 The following documents form a part of this document
Inorganic Coatings
to the extent referenced herein.
B697 Guide for Selection of Sampling Plans for Inspection
2
of Electrodeposited Metallic and Inorganic Coatings
2.2 ASTM Standards:
B762 Test Method of Variables Sampling of Metallic and
B183 Practice for Preparation of Low-Carbon Steel for
Inorganic Coatings
Electroplating
E8 Test Methods for Tension Testing of Metallic Materials
B242 Guide for Preparation of High-Carbon Steel for Elec-
2.3 Military Standards:
troplating
3
MIL-R-46085 Rhodium Plating, Electrodeposited
B252 Guide for Preparation of Zinc Alloy Die Castings for
3
QQ-N-290 Nickel Plating, Electrodeposited
Electroplating and Conversion Coatings
B254 Practice for Preparation of and Electroplating on
3. Classification
Stainless Steel
B281 Practice for Preparation of Copper and Copper-Base
3.1 Electrodeposited coatings of rhodium on the basis of
Alloys for Electroplating and Conversion Coatings
thickness are classified as follows:
Class Minimum Thickness, µm
0.05 0.05
1 0.25 0.25
This specification is under the jurisdiction of ASTM Committee B08 on
0.5 0.5
Metallic and Inorganic Coatings and is the direct responsibility of Subcommittee
11
B08.04 on Precious Metal Coatings.
2.5 2.5
Current edition approved Sept. 1, 2014. Published September 2014. Originally
6.25 6.25
approved in 1978. Last previous edition approved in 2009 as B634 – 88 (2009).
DOI: 10.1520/B0634-14.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
3
Standards volume information, refer to the standard’s Document Summary page on AvailablefromStandardizationDocumentsOrderDesk,Bldg.4SectionD,700
the ASTM website. 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 ----------------------
B634−14
4. Ordering Information 6.3 Significant Surfaces—Significant surfaces are defined as
thosenormallyvisible(directlyorbyreflection)orareessential
4.1 To make application of this standard complete, the
to the serviceability or function of the article or which can be
purchaser needs to supply the following information to the
the source of corrosion products or tarnish films that interfere
seller in the purchase order or other governing document:
with the function or desirable appearance of the article. When
4.1.1 Name, designation, and year of issue of this standard,
necessary, the significant surfaces shall be indicated on the
4.1.2 Class including a maximum
...
This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
Designation: B634 − 88 (Reapproved 2009) B634 − 14
Standard Specification for
1
Electrodeposited Coatings of Rhodium for Engineering Use
This standard is issued under the fixed designation B634; 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 (´) indicates an editorial change since the last revision or reapproval.
1. Scope
1.1 This specification covers requirements for electrodeposited coatings of rhodium used for engineering purposes.
1.2 Coatings of rhodium covered by this specification are usually employed for their corrosion resistance, stable electrical
contact resistance, wear resistance, reflectivity, and heat resistance.
1.3 Appendix X1 covers some typical applications for electrodeposited rhodium.
1.4 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this 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.
2. Referenced Documents
2.1 The following documents form a part of this document to the extent referenced herein.
2
2.2 ASTM Standards:
B183 Practice for Preparation of Low-Carbon Steel for Electroplating
B242 Guide for Preparation of High-Carbon Steel for Electroplating
B252 Guide for Preparation of Zinc Alloy Die Castings for Electroplating and Conversion Coatings
B254 Practice for Preparation of and Electroplating on Stainless Steel
B281 Practice for Preparation of Copper and Copper-Base Alloys for Electroplating and Conversion Coatings
B322 Guide for Cleaning Metals Prior to Electroplating
B343 Practice for Preparation of Nickel for Electroplating with Nickel
B456 Specification for Electrodeposited Coatings of Copper Plus Nickel Plus Chromium and Nickel Plus Chromium
B481 Practice for Preparation of Titanium and Titanium Alloys for Electroplating
B482 Practice for Preparation of Tungsten and Tungsten Alloys for Electroplating
B487 Test Method for Measurement of Metal and Oxide Coating Thickness by Microscopical Examination of Cross Section
B507 Practice for Design of Articles to Be Electroplated on Racks
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
E8 Test Methods for Tension Testing of Metallic Materials
2.3 Military Standards:
3
MIL-R-46085 Rhodium Plating, Electrodeposited
3
QQ-N-290 Nickel Plating, Electrodeposited
1
This specification is under the jurisdiction of ASTM Committee B08 on Metallic and Inorganic Coatings and is the direct responsibility of Subcommittee B08.04 on
Precious Metal Coatings.
Current edition approved Sept. 1, 2009Sept. 1, 2014. Published November 2009September 2014. Originally approved in 1978. Last previous edition approved in 20042009
ε1
as B634 – 88 (2004)(2009). . DOI: 10.1520/B0634-88R09.10.1520/B0634-14.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM Standards
volume information, refer to the standard’s Document Summary page on the ASTM website.
3
Available from Standardization Documents Order Desk, Bldg. 4 Section D, 700 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 ----------------------
B634 − 14
3. Classification
3.1 Electrodeposited coatings of rhodium on the basis of thickness are classified as follows:
Class Minimum Thickness, μm
0.05 0.05
0.25 0.25
0.5 0.5
1 1
2.5 2.5
6.2 6.25
6.25 6.25
4. Ordering Information
4.1 To make application of this standard complete, the purchaser needs to supply the following information to the seller in the
purchase order or other governing document:
4.1.1 Name, designation, and year of issue of this standard,
4.1.2 Class includi
...
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