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ASTM B644-11

Historical Revision

Standard Specification for Copper Alloy Addition Agents

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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 UnitsValues 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.


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.


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.

PropertyRounded Unit for Observed or Calculated Value
Chemical CompositionNearest unit in the last right-hand significant digit
used in expressing the limiting value

SDO ASTM: ASTM International
Document Number B644
Publication Date April 1, 2011
Language en - English
Page Count 4
Revision Level 11
Supercedes
Committee B05.05
Publish Date Document Id Type View
July 1, 2024 B0644-24 Revision
April 1, 2011 B0644-11 Revision
Oct. 1, 2005 B0644-05 Revision
Jan. 1, 1995 B0644-95 Revision
April 1, 2017 B0644-11R17 Reaffirmation
April 10, 2003 B0644-95R03 Reaffirmation