ASTM B644-11(2017) - 1.4.2017
 
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

 
1. 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.

 
2. Referenced Documents

B846-24

Standard Terminology for Copper and Copper Alloys

E29-22

Standard Practice for Using Significant Digits in Test Data to Determine Conformance with Specifications

E255-23

Standard Practice for Sampling Copper and Copper Alloys for the Determination of Chemical Composition

E54-80(1996)

Standard Test Methods for Chemical Analysis of Special Brasses and Bronzes (Withdrawn 2002)

No. 4748

Determination of Iron Content; Na2EDTA Titrimetric Method Available from American National Standards Institute (ANSI), 25 W. 43rd St., 4th Floor, New York, NY 10036.

E76-88(1998)

Standard Test Methods for Chemical Analysis of Nickel-Copper Alloys (Withdrawn 2003)

E478-24

Standard Test Methods for Chemical Analysis of Copper Alloys

E1371-05

Standard Test Method for Gravimetric Determination of Phosphorus in Phosphorus-Copper Alloys or Phosphorus-Copper-Silver Alloys (Withdrawn 2006)

E62-89(1996)

Standard Test Methods for Chemical Analysis of Copper and Copper Alloys (Photometric Methods)