This specification covers three modern alloy types, made from tin, antimony, and copper, used in the fabrication of pewter articles by casting, spinning, drawing, or forming. These alloy types include: castings (Type I), sheets (Type 2), and special-purpose alloys (Type 3). The metal may be supplied in the form of bar, ingot, rolled sheet, and circle, all of which shall be available in the specified nominal dimensions (thickness, width, length, and/or diameter) and mass. Pewter alloy shall be defined as having a composition within the prescribed range for tin, antimony, and copper, and shall conform to the specified impurity limits for lead, arsenic, iron, and zinc.
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1.1 This specification covers three alloy types, made from tin, antimony, and copper, used in the fabrication of pewter articles by casting, spinning, drawing, or forming. The metal may be supplied in the form of bars, ingots, rolled sheet, and circles.
1.2 Pewter alloy shall be defined as having a composition within the range from 90 to 98 % tin, 1 to 8 % antimony, and 0.25 to 3 % copper. Compositions are given in Table 1.
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.
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
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
bar; ingot; pewter; rolled sheet; tin–antimony–copper alloys; UNS L13912 (modern pewter sheet alloy); UNS L13963 (modern pewter); Ingots; Pewter alloys (tin-antimony-copper); Rolled sheet; Tin-antimony-copper alloys; UNS L13911 (modern pewter casting alloys);
ICS Number Code 77.120.60 (Lead, zinc, tin and their alloys)
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