There’s a new 2012 Revision for the widely-used ASTM A339, “Standard Specification for Pig Tin,” and it’s available now from Document Center Inc. This 4-page specification covers refined tin in pig form recovered and cast from primary and secondary tin-bearing materials.
One grade of tin metal is specified and is designated as Grade A. The refined tin is produced from primary, secondary, or a combination of tin-bearing materials to obtain the requirements of this specification, and may be manufactured by fire refining, vacuum refining, electrolytic or electrowinning refining methods, or a combination of the above.
The metal shall conform to the chemical composition requirements prescribed for tin, antimony, arsenic, bismuth, cadmium, copper, iron, lead, nickel, sulfur, zinc, silver, and other impurities. All tin of Grade A produced and cast at one time shall constitute a lot for chemical analysis.
Sampling for chemical analysis are specified as one of the following methods: (1) sampling from the lot during casting, and (2) sampling from the solidified cast pig product by sawing, drilling, or melting. The methods of sampling cast pig product are illustrated.
If product analysis is desired, it may be made by methods including, but not limited to, wet chemical or spectrographic techniques.
ASTM B339-12, as well as all current and many obsolete revisions of ASTM standards, may be purchased on our website, www.document-center.com. Or contact us by phone (650-591-7600), fax (650-591-7617) or email (info@document-center.com). Many ASTM documents have red-line editions available as well, which provide you with a second copy that includes markup for all changes from the previous edition. Our website will show you when a red-line edition is available for a particular standard, and our staff can assist you too.