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Description of ASTM-B32 2008
ASTM B32 - 08
Standard Specification for Solder Metal
Active Standard ASTM B32 | Developed by Subcommittee: B02.02
Book of Standards Volume: 02.04
This specification covers solder metal alloys (also 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. Included here are solders in the form of solid bars, ingots, powder and special forms, and in the form of solid and flux-core ribbons, wires, and solder pastes. Electronic grade solder alloys and fluxed and non-fluxed solid solders for electronic soldering applications are not taken into account here. Solder alloys shall adhere to chemical composition requirements specified for the following flux types: Types R, RMA, and RA, which are composed of Grade WW or WG gum rosin; Type OA, which is composed of water-soluble organic materials; Type OS, which is composed of water-insoluble organic materials; and Type IS, which is composed of inorganic saltsor acids. Solders shall also meet physical property requirements such as paste texture, powder mesh size, viscosity, solder pool, and dryness, and pass performance requirements such as chlorides and bromides test, copper mirror test, and visual inspection. Other properties to which the alloys should conform to are dimensions and unit weights, spread factor, and resistivity of water extract.
This abstract is a brief summary of the referenced standard. It is informational only and not an official part of the standard; the full text of the standard itself must be referred to for its use and application. ASTM does not give any warranty express or implied or make any representation that the contents of this abstract are accurate, complete or up to date.
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
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