ASTM B32-20 - 1.10.2020
 
1. Scope

1.1 This specification covers solder metal alloys (commonly known as soft solders) used in non-electronic applications, including but not limited to, tin-lead, tin-antimony, tin-antimony-copper-silver, tin-antimony-copper-silver-nickel, tin-silver, tin-copper-silver, and lead-tin-silver, used for the purpose of joining together two or more metals at temperatures below their melting points. Electronic grade solder alloys and fluxed and non-fluxed solid solders for electronic soldering applications are not covered by this specification as they are under the auspices of IPC – Association Connecting Electronic Industries.

1.1.1 These solders include those alloys having a liquidus temperature not exceeding 800°F (430°C).

1.1.2 This specification includes solders in the form of solid bars, ingots, powder and special forms, and in the form of solid and flux-core ribbon, wire, and solder paste.

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.

 
2. Referenced Documents

E51-67 (1978)

Method for Spetrographic Analysis of Tin Alloys by the Powder Technique (Withdrawn 1984)

E55-23

Standard Practice for Sampling Wrought Nonferrous Metals and Alloys for Determination of Chemical Composition

E87-58 (1978)

Methods for Chemical Analysis of Lead, Tin, Antimony and Their Alloys (Photometric Method) (Withdrawn 1984)

E88-11(2017)

Standard Practice for Sampling Nonferrous Metals and Alloys in Cast Form for Determination of Chemical Composition

Fed. Std. No. 123

Marking for Shipment (Civil Agencies)

MIL-STD-129

Marking for Shipment and Storage

E46-83 (1987)

Test Methods for Chemical Analysis of Lead- and Tin-Base Solder (Withdrawn 1994)

D269-97(2020)

Standard Test Method for Insoluble Matter in Rosin and Rosin Derivatives

D464-15(2020)

Standard Test Methods for Saponification Number of Pine Chemical Products Including Tall Oil and Other Related Products

D465-15(2020)

Standard Test Methods for Acid Number of Pine Chemical Products Including Tall Oil and Other Related Products

D509-20

Standard Test Methods of Sampling and Grading Rosin

E28-18(2022)

Standard Test Methods for Softening Point of Resins Derived from Pine Chemicals and Hydrocarbons, by Ring-and-Ball Apparatus

E29-22

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