This 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 shall be 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 these methods. 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 shall be 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.
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.
Significance and Use
For the purpose of determining compliance with the specified limits for requirements of the properties listed in Table 1, an observed value or a calculated value shall be rounded as indicated in accordance with the rounding method of Practice E29.
1.1 This 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 by the grade letter shown in Table 1.
1.2 The percent values of tin contained are to be regarded as the standard.
1.3 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.
1.4 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 Material Safety Data Sheet (MSDS) for this product/material as provided by the manufacturer, to establish appropriate safety and health practices, and determine the applicability of regulatory limitations prior to use.
TABLE 1 Chemical Composition and Impurity Contents
|Element||Composition, - wt%|
|Grade “A”||Grade “B”||Grade “A” for the Manufacture of Tinplate|| Ultra Pure|
|Antimony, max||0.04||0.015|| 0.04|| 0.005|
|Arsenic, max||0.05||0.05|| 0.05|| 0.005|
|Bismuth, max|| 0.030||0.030|| 0.030|| 0.015|
|Cadmium, max|| 0.001||0.001|| 0.001|| 0.001|
|Copper, max||0.04||0.04|| 0.04|| 0.005|
|Iron, max|| 0.010||0.010|| 0.010|| 0.010|
|Lead, max||0.05||0.5|| 0.010|| 0.001|
|Ni + Co, max||0.01||0.01|| 0.01|| 0.010|
|Sulfur, max||0.01||0.01|| 0.01|| 0.010|
|Zinc, max|| 0.005||0.005|| 0.005|| 0.005|
|Silver, max||0.01||0.01|| 0.01|| 0.010|
|Other impuritiesA|| 0.010|| 0.010|
A Maximum per impurity not listed above.
2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.
E29 Practice for Using Significant Digits in Test Data to Determine Conformance with Specifications
E46 Test Methods for Chemical Analysis of Lead- and Tin-Base Solder
E51 Method for Spectrographic Analysis of Tin Alloys by the Powder Technique
E57 Methods for Chemical Analysis of White Metal Bearing Alloys
E88 Practice for Sampling Nonferrous Metals and Alloys in Cast Form for Determination of Chemical Composition
chemical composition; lot; metal; pig; refined; sampling; tin ;
ICS Number Code 77.120.60 (Lead, zinc, tin and their alloys)
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