iTeh StandardsiTeh Standards
EURUSD
Your shopping cart is empty.
ASTM

ASTM B628-98(2004)

(Specification)

Standard Specification for Silver-Copper Eutectic Electrical Contact Alloy

Standard Specification for Silver-Copper Eutectic Electrical Contact Alloy

ABSTRACT
This specification covers 72% silver-28% copper (eutectic) alloy rod, wire, strip, and sheet material for electrical contacts. The material shall be finished by such operations (cold working, heat treatment, annealing, turning, grinding, or pickling) as are required to produce the prescribed properties. The alloy materials shall conform to the chemical composition and mechanical property requirements. All tests shall be conducted at room temperature.
SCOPE
1.1 This specification covers 72 % silver-28 % copper (eutectic) alloy rod, wire, strip, and sheet material for electrical contacts.
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 become familiar with all hazards including those identified in the appropriate Material Safety Data Sheet for this product/material as provided by the manufacturer, to establish appropriate safety and health practices, and determine the applicability of regulatory limitations prior to use.

General Information

Status
Historical
Publication Date
30-Apr-2004
ICS
77.120.99 - Other non-ferrous metals and their alloys
Technical Committee
B02 - Nonferrous Metals and Alloys
Drafting Committee
B02.05 - Precious Metals and Electrical Contact Materials and Test Methods
Current Stage
Ref Project

Relations

Replaces
ASTM B628-98 - Standard Specification for Silver-Copper Eutectic Electrical Contact Alloy
Effective Date
01-May-2004
Replaced By
ASTM B628-98(2010) - Standard Specification for Silver-Copper Eutectic Electrical Contact Alloy
Effective Date
01-Oct-2010

Buy Standard

ASTM B628-98(2004) - Standard Specification for Silver-Copper Eutectic Electrical Contact AlloyASTM B628-98(2004) - Standard Specification for Silver-Copper Eutectic Electrical Contact Alloy
PreviousNext
Technical specification
ASTM B628-98(2004) - Standard Specification for Silver-Copper Eutectic Electrical Contact Alloy
English language
3 pages
sale 15% off
Preview
sale 15% off
Preview

Standards Content (Sample)

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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: B628 – 98 (Reapproved 2004)
Standard Specification for
1
Silver-Copper Eutectic Electrical Contact Alloy
This standard is issued under the fixed designation B628; 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.
This standard has been approved for use by agencies of the Department of Defense.
1. Scope 5. Chemical Composition
1.1 This specification covers 72 % silver-28 % copper (eu- 5.1 Material produced under the specification shall conform
tectic) alloy rod, wire, strip, and sheet material for electrical to the requirements as to chemical composition prescribed in
contacts. Table 1.
1.2 This standard does not purport to address all of the
A
safety concerns, if any, associated with its use. It is the TABLE 1 Chemical Composition
responsibility of the user of this standard to become familiar
Element Weight %
with all hazards including those identified in the appropriate
Material Safety Data Sheet for this product/material as pro-
Silver 71.0 to 73.0
vided by the manufacturer, to establish appropriate safety and
Copper balance
health practices, and determine the applicability of regulatory
Total of all impurities 0.15
Zinc 0.06 max
limitations prior to use.
Iron 0.05 max
Cadmium 0.05 max
2. Referenced Documents
Lead 0.03 max
2
Nickel 0.01 max
2.1 ASTM Standards:
Aluminum 0.005 max
B277 Test Method for Hardness of Electrical Contact Ma-
Phosphorus 0.03 max
terials
Total others 0.06 max
A
B476 Specification for General Requirements for Wrought
Analysis is regularly made for the elements for which specific limits are listed.
Precious Metal Electrical Contact Materials If, however, the presence of “other” elements is suspected or indicated in the
course of routine analysis, further analysis shall be made to determine that the
totalofthese“other”elementsandthelistedimpuritiesarenotinexcessofthetotal
3. General Requirements
impurities limit.
3.1 SpecificationB476andTestMethodB277shallapplyto
all materials produced to this specification.
6. Mechanical Requirements
6.1 The material shall conform to the mechanical properties
4. Manufacture
prescribed in Table 2 or Table 3.
4.1 Raw materials shall be of such quality and purity that
6.2 All test specimens shall be full thickness or diameter
the finished product will have the properties and characteristics
when practical.
prescribed in this specification.
6.3 All tests are to be conducted at room temperature, about
4.2 The material shall be finished by such operations (cold
68°F (20°C).
working, heat treating, annealing, turning, grinding, or pick-
ling) as are required to produce the prescribed properties.
7. Inspection and Testing
7.1 Material furnished under this specification shall be
1
This specification is under the jurisdiction of ASTM Committee B02 on
inspected by the manufacturer as detailed in the applicable
Nonferrous Metals and Alloys and is the direct responsibility of Subcommittee
provisions of Specification B476 and as listed below.
B02.05 on Precious Metals and Electrical Contact Materials.
7.1.1 Visual inspection at 10 3.
Current edition approved May 1, 2004. Published May 2004. Originally
7.1.2 Temper test (hardness or tension, but not both). A
approved in 1977. Last previous edition approved in 1998 as B628 – 98. DOI:
10.1520/B0628-98R04.
tensiontestisrecommendedforstripbelow0.030-in.(0.8-mm)
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
thickness and for wire of any diameter. A tension test is
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
preferred when permitted by part size and quantity.
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. 7.1.3 Dimensional tests.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
1

---------------------- Page: 1 ----------------------
B628 – 98 (2004)
TABLE 2 Mechanical Properties of Sheet and Strip
Reduction inB&S Percent Ultimate Tensile Strength, psi (MPa) Minimum
Hardness,
Temper Numbers Reduction Elongation
Rockwell 30 T
Minimum Maximum
(Reference) (Reference) in2in.,%
A 0 0 45 000 55 000 15 56–64
(310) (380)
1/4H 1 11 56 000 66 000 7 61–69
(390) (460)
1/2H 2 21 60 000 70 000 3 64–72
(410) (480)
3/4H 3 29 66 000 76 000 2 65–73
(460) (520)
Hard 4 37 69 000 79 000 2 66–74
(480) (550)
Extra hard 6 50 75 000 85 000 1 67–75
(520) (590)
Spring 8 60 83 000 93 000 1 68–76
(570) (640)
TABLE 3 Mechanical Properties of Wire and Rod
Reduction inB&S Percent Ultimate Tensile Strength, psi (MPa) Minimum
Temper Numbers Reduction Elongation
Minimum Ma
...

Questions, Comments and Discussion

Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.

This May Also Interest You

ASTM
ASTM B561-23(Specification)
Standard Specification for Refined  Platinum

ABSTRACT
This specification covers refined platinum as sponge, cast bar, and wrought forms in two grades as follows: Grade 99.95 and Grade 99.99. The refined platinum shall conform to the required chemical composition for platinum, rhodium, palladium, ruthenium, iridium, gold, silver, lead, tin, zinc, iron, manganese, copper, silicon, calcium, magnesium, aluminum, nickel, chromium, antimony, arsenic, bismuth, tellurium, cadmium, and molybdenum. The metal may be produced by refining process that yields a product capable of meeting the chemical requirements of this specification.
SCOPE
1.1 This specification covers refined platinum as sponge, cast bar, and wrought forms (Note 1) in two grades as follows:  
1.1.1 Grade 99.95 (UNS PO4995)—Platinum having a purity of 99.95 %, min, and  
1.1.2 Grade 99.99—Platinum having a purity of 99.99 % min.  
Note 1: Other forms of unfabricated platinum of commerce are not to be excluded under this specification.
Note 2: For the purposes of determining conformance with this specification, an observed value obtained from analysis shall be rounded to the nearest unit in the last right hand place of figures used in expressing the limiting value, in accordance with the rounding off method of Practice E29.  
1.2 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.  
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 become familiar with all hazards including those identified in the appropriate Safety Data Sheet (SDS) for this product/material as provided by the manufacturer, to establish appropriate safety, health, and environmental practices, and determine the applicability of regulatory limitations prior to use.  
1.4 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

  • Technical specification
    2 pages
    English language
    sale 15% off
  • Technical specification
    2 pages
    English language
    sale 15% off
ASTM
ASTM B664-18(2023)(Specification)
Standard Specification for 80 % Silver-20 % Graphite Sliding Contact Material

ABSTRACT
This specification defines the criteria for composition and other requirements for sliding contact materials or brushes with a nominal composition by weight of 20% silver and 80% graphite. Materials shall adhere to specified requirements for chemical composition, density, shear strength, and microstructure. They shall also conform to typical values of Rockwell superficial hardness and specific resistance.
SCOPE
1.1 This specification defines the criteria for composition and other requirements for brushes with a nominal silver content of 80 %, by weight, with the balance being substantially graphite.  
1.2 The values stated in inch-pound units are to be regarded as standard. No other units of measurement are included in this standard.  
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 become familiar will all hazards including those identified in the appropriate Safety Data Sheet (SDS) for this product/material as provided by the manufacturer, to establish appropriate safety, health, and environmental practices, and determine the applicability of regulatory limitations prior to use.  
1.4 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

  • Technical specification
    2 pages
    English language
    sale 15% off
ASTM
ASTM B616-23(Specification)
Standard Specification for Refined Rhodium

ABSTRACT
This specification covers refined rhodium as sponge and powder in three grades, namely: Grade 99.80, Grade 99.90, and Grade 99.95. The material may be produced by any refining process that will yield a product capable of meeting the chemical composition requirements specified for rhodium, platinum, iridium, palladium, ruthenium, lead, tin, zinc, arsenic, bismuth, cadmium, iron, silicon, silver, gold, copper, nickel, tellurium, magnesium, calcium, aluminum, chromium, manganese, antimony, cobalt, and boron determined by chemical analysis. Sampling requirements for the metal sponge and powder are detailed.
SCOPE
1.1 This specification covers refined rhodium as sponge and powder in three grades as follows:  
1.1.1 Grade 99.80—Rhodium having a purity of 99.80 %,  
1.1.2 Grade 99.90—Rhodium having a purity of 99.90 %, and  
1.1.3 Grade 99.95—Rhodium having a purity of 99.95 %.  
1.1.4 For the purposes of determining conformance with this specification, an observed value obtained from analysis shall be rounded to the nearest unit in the last right-hand place of figures used in expressing the limiting value, in accordance with the rounding method of Practice E29.  
1.2 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.  
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 become familiar with all hazards including those identified in the appropriate Safety Data Sheet (SDS) for this product/material as provided by the manufacturer, to establish appropriate safety, health, and environmental practices, and determine the applicability of regulatory limitations prior to use.  
1.4 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

  • Technical specification
    2 pages
    English language
    sale 15% off
  • Technical specification
    2 pages
    English language
    sale 15% off
ASTM
ASTM B717-23(Specification)
Standard Specification for Refined Ruthenium

ABSTRACT
This specification covers refined ruthenium as sponge and powder in one grade as follows: Grade 99.80 and Grade 99.90. The material may be produced by any refining process that yields a product capable of meeting the chemical requirements of this specification. The material should conform to the requirements for chemical composition as prescribed.
SCOPE
1.1 This specification covers refined ruthenium as sponge and powder in one grade as follows:  
1.1.1 Grade 99.80—Ruthenium having a purity of 99.80 %.  
1.1.2 Grade 99.90—Ruthenium having a purity of 99.90 %.  
Note 1: For the purposes of determining conformance with this specification, an observed value obtained from analysis shall be rounded to the nearest unit in the last right-hand place of figures used in expressing the limiting value in accordance with the rounding method of Practice E29.  
1.2 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.  
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 become familiar with all hazards including those identified in the appropriate Safety Data Sheet (SDS) for this product/material as provided by the manufacturer, to establish appropriate safety, health, and environmental practices, and determine the applicability of regulatory limitations prior to use.  
1.4 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

  • Technical specification
    2 pages
    English language
    sale 15% off
  • Technical specification
    2 pages
    English language
    sale 15% off
ASTM
ASTM B692-18(2023)(Specification)
Standard Specification for 75 % Silver-25 % Graphite Sliding Contact Material

ABSTRACT
This specification defines the criteria for the chemical composition and other requirements (including physical properties, microstructure, superficial hardness, and specific resistance ) for silver-graphite brushes for sliding electrical contacts. The percentage of silver, graphite, ash in graphite, and total metal impurities are prescribed. The minimum acceptable values for the physical properties such as density, determined by measurement and weight method, and shear strength are given. Typical Rockwell hardness and specific resistance for the material are also specified.
SCOPE
1.1 This specification defines the criteria for composition and other requirements for brushes with a nominal silver content of 75 weight % with the balance being substantially graphite.  
1.2 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.  
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 become familiar with all hazards including those identified in the appropriate Safety Data Sheet (SDS) for this product/material as provided by the manufacturer, to establish appropriate safety, health, and environmental practices, and determine the applicability of regulatory limitations prior to use.  
1.4 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

  • Technical specification
    2 pages
    English language
    sale 15% off
ASTM
ASTM B563-01(2022)(Specification)
Standard Specification for Palladium-Silver-Copper Electrical Contact Alloy

ABSTRACT
This specification covers an alloy containing palladium, silver, copper, platinum, and nickel in the form of wire, rod, and strip for electrical contacts. The materials shall be processed by cold working, heat treating, annealing, turning, grinding, and pickling. The material shall conform to the required chemical composition of palladium, silver, copper, platinum, and nickel. The alloys shall conform to the required mechanical properties such as tensile strength, elongation, Knoop hardness, and Vickers hardness.
SCOPE
1.1 This specification covers an alloy containing palladium, silver, copper, platinum, and nickel in the form of wire, rod, and strip for electrical contacts.  
1.2 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.  
1.3 The following precautionary statement pertains to the test method portion only, Section 7, 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 become familiar with all hazards including those identified in the appropriate Safety Data Sheet (SDS) for this product/material as provided by the manufacturer, to establish appropriate safety, health, and environmental practices, and determine the applicability of regulatory limitations prior to use.  
1.4 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

  • Technical specification
    3 pages
    English language
    sale 15% off
ASTM
ASTM B684/B684M-22(Specification)
Standard Specification for Platinum-Iridium Electrical Contact Materials

ABSTRACT
This specification covers two platinum-iridium alloys in the form of rod, wire, strip, and sheet material for electrical contacts. Raw materials shall be of such quality and purity that the finished product (produced by cold working, annealing, turning, grinding, or pickling as required) will have the properties and characteristics prescribed in this specification. The alloys shall meet the requirements of chemical composition specified for platinum, iridium, total impurities, total platinum group (palladium, rhodium, osmium, ruthenium, and gold), total other impurities (including lead, antimony, bismuth, tin, arsenic, cadmium, zinc, and iron) and other elements. Ultimate tensile strength, elongation, microhardness (Knoop or Vickers), hardness (Rockwell or Rockwell Superficial), or a combination of these mechanical properties may be specified as criterion for temper designation. Annealed and work hardened wire and strip shall conform to the mechanical requirements prescribed for ultimate tensile strength, elongation, and microhardness. Knoop hardness test, tension test, and chemical analysis using spectrochemical or wet analysis method shall be performed.
SCOPE
1.1 This specification covers an 80 % platinum—20 % iridium alloy, an 85 % platinum—15 % iridium alloy, and a 90 % platinum—10 % iridium alloy, in the form of rod, wire, strip, and sheet material for electrical contacts.  
1.2 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system are not necessarily exact equivalents; therefore, to ensure conformance with the standard, each system shall be used independently of the other, and values from the two systems shall not be combined.  
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 become familiar with all hazards including those identified in the appropriate Safety Data Sheet (SDS) for this product/material as provided by the manufacturer, to establish appropriate safety, health, and environmental practices, and determine the applicability of regulatory limitations prior to use.  
1.4 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

  • Technical specification
    3 pages
    English language
    sale 15% off
  • Technical specification
    3 pages
    English language
    sale 15% off
ASTM
ASTM B1011/B1011M-22(Specification)
Standard Specification for Cobalt Alloy Spring Wire

SCOPE
1.1 This specification covers cold-drawn cobalt alloy spring wire intended especially for the manufacture of springs.  
1.1.1 This specification requires capability properties after age hardening test samples of the cold worked spring wire to ensure final mechanical properties are satisfied. The spring is typically age hardened after fabrication to increase its strength. However, mechanical properties cannot be obtained from finished springs.  
1.2 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in non-conformance with the standard.  
1.3 Unless the order specifies an “M” designation, the material shall be furnished to inch-pound units.  
1.4 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

  • Technical specification
    4 pages
    English language
    sale 15% off
  • Technical specification
    4 pages
    English language
    sale 15% off
ASTM
ASTM B693-17(2022)(Specification)
Standard Specification for Silver-Nickel Electrical Contact Materials

ABSTRACT
This specification covers electrical contact components made from silver-nickel by powder metallurgical procedures. This covers compositions within the silver-nickel system normally specified by users of electrical contacts. Chemical analysis shall be performed to evaluate material conformance to specified composition requirements. A representative sample of chips may be obtained by milling, drilling, or crushing with dry tools, (without lubrication). In order to obtain free chips, the parts selected for testing shall have the oil extracted, if necessary. Physical tests including microstructure shall be performed on a representative number of specimens.
SIGNIFICANCE AND USE
9.1 Proprietary methods for manufacture of these materials vary significantly among suppliers and these methods influence such properties as arc erosion, contact resistance, and the tendency to weld in service. Since the performance of contacts in a device depends on numerous factors outside the contact itself (opening speed, closing speed, contact pressure, contact bounce, environmental variations, assembly technique and variations, etc.), this specification cannot ensure performance control in the application. As part of the qualification on initial samples, it is recommended that the user functionally test the materials electrically for all devices applicable to the material's use. This specification provides a means for the contact manufacturer and contact user to reach agreement on the details of material to be supplied for a specific use and reasonable assurance that future lots will be similar in properties and microstructure to the initial test or sample contact supplied.
SCOPE
1.1 This specification covers electrical contact components made from silver nickel by powder metallurgical procedures.  
1.2 This specification covers compositions within the silver-nickel system normally specified by users of electrical contacts.  
1.3 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.  
1.4 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 become familiar with all hazards including those identified in the appropriate Safety Data Sheet (SDS) for this product/material as provided by the manufacturer, to establish appropriate safety, health, and environmental practices, and determine the applicability of regulatory limitations prior to use.  
1.5 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

  • Technical specification
    3 pages
    English language
    sale 15% off
ASTM
ASTM B522-01(2021)(Specification)
Standard Specification for Gold-Silver-Platinum Electrical Contact Alloy

ABSTRACT
This specification covers 69% gold, 25% silver, 6% platinum alloy tubing, rod, wire, and sheet material for sliding electrical contacts. The material shall be finished by such operations (cold working, annealing, turning, grinding, pickling) as are required to produce the prescribed properties. The material shall be tested and conform to chemical composition, and mechanical and electrical property requirements. The mechanical requirements of the material are ultimate tensile strength, elongation, microhardness, hardness, or a combination of these mechanical properties as temper criterion. All tests shall be conducted at room temperature.
SCOPE
1.1 This specification covers 69 % gold, 25 % silver, 6 % platinum alloy tubing, rod, wire, and sheet material for sliding electrical contacts.  
1.2 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.  
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 become familiar with all hazards including those identified in the appropriate Safety Data Sheet (SDS) for this product/material as provided by the manufacturer, to establish appropriate safety, health, and environmental practices, and determine the applicability of regulatory limitations prior to use.  
1.4 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

  • Technical specification
    3 pages
    English language
    sale 15% off