ASTM B644-11(2017)
(Specification)Standard Specification for Copper Alloy Addition Agents
Standard Specification for Copper Alloy Addition Agents
ABSTRACT
This specification establishes the requirements for copper nickel, ferro copper, phosphor copper, and silicon copper master alloys in ingot, shot, and waffle form to be used as addition agents for cast and wrought alloys. Any material may be used which, when melted, will form an alloy of the required composition. Any manufacturing process may be used that will yield a product uniform in composition and free of defects of a nature that would render the product unsuitable for the intended application. The product in final form shall conform to the chemical composition requirements for the specified alloy. The sample for chemical analysis shall be done as specified. Composition shall be determined as the average of results from at least two replicate determinations for each element specified. For purposes of determining compliance with the specified limits for chemical composition, an observed or calculated value shall be rounded appropriately.
SIGNIFICANCE AND USE
11.1 For purposes of determining compliance with the specified limits for chemical composition an observed or calculated value shall be rounded as indicated in accordance with the Rounding method of Practice E29.
Property
Rounded Unit for Observed or Calculated Value
Chemical Composition
Nearest unit in the last right-hand significant digit
used in expressing the limiting value
SCOPE
1.1 This specification establishes the requirements for copper nickel, ferro copper, phosphor copper, and silicon copper master alloys in ingot, shot, and waffle form to be used as addition agents for cast and wrought alloys.
1.2 Units—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 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.
General Information
Relations
Standards Content (Sample)
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.
Designation: B644 −11 (Reapproved 2017)
Standard Specification for
Copper Alloy Addition Agents
This standard is issued under the fixed designation B644; 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 U.S. Department of Defense.
1. Scope* E1371 Test Method for Gravimetric Determination of Phos-
phorus in Phosphorus-Copper Alloys or Phosphorus-
1.1 This specification establishes the requirements for cop-
Copper-Silver Alloys (Withdrawn 2006)
per nickel, ferro copper, phosphor copper, and silicon copper
2.2 ISO Standard:
master alloys in ingot, shot, and waffle form to be used as
No. 4748 Determination of Iron Content; Na2EDTA Titri-
addition agents for cast and wrought alloys.
metric Method
1.2 Units—Values stated in inch-pound units are to be
regarded as standard. The values given in parentheses are
3. Terminology
mathematical conversions to SI units that are provided for
3.1 For definitions of terms related to copper and copper
information only and are not considered standard.
alloys, refer to Terminology B846.
1.3 This international standard was developed in accor-
dance with internationally recognized principles on standard-
4. Ordering Information
ization established in the Decision on Principles for the
4.1 Include the following information when placing orders
Development of International Standards, Guides and Recom-
for product under this specification, as applicable:
mendations issued by the World Trade Organization Technical
4.1.1 ASTM designation and year of issue (for example
Barriers to Trade (TBT) Committee.
B644 – XX).
4.1.2 Alloy number and letter; generic name (Table 1),
2. Referenced Documents
4.1.3 Form; size, weight, screen distribution,
2.1 ASTM Standards:
4.1.4 Quantity or total weight; each form, size, weight,
B846 Terminology for Copper and Copper Alloys
screen distribution.
E29 Practice for Using Significant Digits in Test Data to
Determine Conformance with Specifications
5. Material and Manufacture
E255 Practice for Sampling Copper and Copper Alloys for
5.1 Material:
the Determination of Chemical Composition
5.1.1 Any material may be used which, when melted, will
E54 Test Methods for ChemicalAnalysis of Special Brasses
form an alloy of the required composition.
and Bronzes (Withdrawn 2002)
5.2 Manufacture:
E62 Test Methods for Chemical Analysis of Copper and
5.2.1 Any manufacturing process may be used that will
CopperAlloys (Photometric Methods)(Withdrawn 2010)
yield a product uniform in composition and free of defects of
E76 Test Methods for Chemical Analysis of Nickel-Copper
a nature that would render the product unsuitable for the
Alloys (Withdrawn 2003)
intended application.
E478 Test Methods for ChemicalAnalysis of CopperAlloys
6. Chemical Composition
ThisspecificationisunderthejurisdictionofASTMCommitteeB05onCopper 6.1 The product in final form shall conform to the require-
and Copper Alloys and is the direct responsibility of Subcommittee B05.05 on
ments prescribed in Table 1 for the specified alloy.
Castings and Ingots for Remelting.
6.1.1 Thesespecificationlimitsdonotprecludethepresence
Current edition approved April 1, 2017. Published April 2017. Originally
of other elements. Limits may be established and analysis
approved in 1982. Last previous edition approved in 2011 as B644-11. DOI:
10.1520/B0644-11R17.
required for unnamed elements by agreement between the
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
manufacturer and the purchaser.
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 4
The last approved version of this historical standard is referenced on Available fromAmerican National Standards Institute (ANSI), 25 W. 43rd St.,
www.astm.org. 4th Floor, New York, NY 10036, http://www.ansi.org.
*A Summary of Changes section appears at the end of this standard
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
B644 − 11 (2017)
TABLE 1 Chemical Requirements
Composition, max, % (unless shown as a range or minimum)
Copper-
Element Ferro Copper Phosphor Copper Silicon Copper
Nickel
Alloy 1A Alloy 2A Alloy 2B Alloy 3A Alloy 3B Alloy 4A Alloy 4B Alloy 4C Alloy 4D
Copper, min 46.5 88.7 48.2
Nickel (incl. cobalt) 48.0–51.0 0.10 0.10
Silicon 0.05 9.0–11.0 13.5–16.5 18.5–21.5 28.5–31.5
Copper + silicon + iron 99.4 min 99.4 min 99.4 min 99.4 min
Phosphorus 14.0 min 8.0–8.8
Phosphorus + copper 99.75 min 99.75 min
Iron 1.20 9.0–11.0 48.5–51.5 0.15 0.15 0.50 0.50 0.50 0.50
Aluminum 0.25 0.25 0.25 0.25
Tin 0.10 0.25 0.25 0.25 0.25
Calcium 0.15 0.15 0.15 0.15
Carbon 0.05 0.05 0.05
Sulfur 0.02
Lead 0.05
Zinc 0.10 0.10 0.10 0.10 0.10
Manganese 0.7 0.10 0.10
7. Sampling 8.2.1.2 The retest shall be as directed in 8.1 except the
numberofreplicatedeterminationsshallbetwicethatnormally
7.1 The inspection lot size, portion size, and selection of
required by this specification.All determinations shall conform
portion pieces shall be as follows:
to specification requirements. Failure to comply shall be cause
7.1.1 LotSize—An inspection lot shall consist of all product
for lot rejection.
from a single heat.
7.1.2 Portion Size:
9. Specimen Preparation
7.1.2.1 Ingot and Shot—The portion size shall be not less
9.1 Chemical Composition—Preparation of the analytical
than 1 ingot.
7.1.2.2 ShotandWaffle—Theportionsizeforproductinshot specimen shall be the responsibility of the reporting laboratory.
or waffle form shall be not less than 1 lb (0.453 kg) and shall
beselectedtoconsistofanaverageofallsizesofproductinthe 10. Test Methods
lot.
10.1 Test methods used for quality control or production
7.1.3 Selection of Portion Pieces—The individual pieces
control, or both, for the determination of conformance to
shall be randomly selected.
chemical compositional requirements are discretionary.
7.2 Chemical Analysis: 10.1.1 Test methods used for obtaining data for the prepa-
ration of certification or test report shall be made available to
7.2.1 The sample for chemical analysis shall be taken from
the pieces selected in 7.1.2 in accordance with Practice E255. the purchaser on request.
The minimum weight of the composite sample shall be 150 g.
10.2 Chemical Composition:
7.2.2 Instead of sampling in accordance with Practice E255,
10.2.1 In case of disagreement, the test method to be
the manufacturer shall have the option of sampling during the
followed for a specific element and concentration shall be as
pouring of the product.At least two samples shall be taken for
indicated in the following table:
each lot poured from the same source of molten metal.
Element Range or Max % Method
7.2.2.1 When the manufacturer determines chemical com-
Aluminum 0.25 E478
position during the course of manufacture, sampling of the Carbon 0.05 E76
Copper 99.75 E478
finished product is not required.
Iron 1.25 E478
9.0–11.0 ISO 4748; Titrimetric
8. Number of Tests and Retests 48.5–51.5 ISO 4748; Titrimetric
Lead 0.05 E478; Atomic Absorption
8.1 Tests:
Manganese 0.10–0.7 E62
Nickel 0.10 E478; Photometric
8.1.1 Chemical Analysis—Composition shall be determined
incl Cobalt 48–51 E76
as the average of results from at least two replicate determi-
Phosphorus 0.01–1.0 E62
nations for each element specified in Table 1 for the specified
8.0–14.0 E1371
Silicon 0.05–32 E54; Perchloric Acid Dehydration
alloy.
Sulfur 0.05–0.08 E76; Direct Combustion
8.2 Retests: Tin 0.01–1 E478 Photometric
Zinc 0.
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