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ASTM B29-2019 pdf free download

ASTM B29-2019 pdf free download.Standard Specification for Refined Lead
1. Scope
1.1 This specification covers refined lead in pig, block, or hog form. 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 ofregulatory limitations prior to use. 1.4 This international standard was developed in accor- dance with internationally recognized principles on standard- ization established in the Decision on Principles for the Development of International Standards, Guides and Recom- mendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
2. Referenced Documents
2.1 The following documents of the issue in effect on the date ofmaterial purchase form a part ofthis specification to the extent referenced herein. 2.2 ASTM Standards: 2 E29 Practice for Using Significant Digits in Test Data to Determine Conformance with Specifications E37 Test Methods for Chemical Analysis of Pig Lead E88 Practice for Sampling Nonferrous Metals and Alloys in Cast Form for Determination of Chemical Composition
3. Ordering Information
3.1 Orders for refined lead under this specification shall include the following information: 3.1.1 ASTM designation and year of issue, 3.1.2 Quantity (weight), 3.1.3 Name of material (for example, pure lead), 3.1.4 Size and shape (see Section 6), 3.1.5 Grade (see Table 1 and accompanying notes), and 3.1.6 Certification or test report if specified (Section 13).
4. Materials and Manufacture
4.1 Lead shall be supplied in commercial standard forms or shapes requested by the purchaser in the following grades: 4.1.1 Low bismuth low silver pure lead, 4.1.2 Extra refined pure lead, 4.1.3 Refined pure lead, 4.1.4 Pure lead, and 4.1.5 Chemical copper lead. 4.2 The grades of lead listed in 4.1.1 – 4.1.5 shall be produced by any smelting and refining process from ore or recycled materials to meet the chemical requirements of this specification.
9. Sampling for Chemical Analysis
9.1 The sample for chemical analysis shall be selected by one of the following methods: 9.1.1 Test samples taken from the lot during casting, or 9.1.2 Test samples taken from the final solidified cast product. 9.2 Sampling for Lot Analysis—The supplier may obtain samples from the lot ofmolten metal during casting. All or part of these samples may be cast into shapes suitable for use in spectrographic analytical methods. This is the preferred method for determining lot chemistry. The samples should be taken in such a way that they are representative of the material cast. 9.3 Sampling ofCast Product: 9.3.1 If the lead is in the form of standard pigs (Fig. 1), the sample for chemical analysis shall be taken in accordance with,, or The method ofsampling in 9.3 does not apply to alloys that exhibit segregation of alloy agents during casting. This means the calcium aluminum alloy are not to be sampled according to this procedure. The preferred method of determining lot chemistry for calcium aluminum lots is suppler sampling of quick frozen wafers during casting. If the pigs differ in shape from those shown in Fig. 1 or the product is cast into blocks or hogs, the supplier and the purchaser shall agree mutually as to the method to be followed in sampling such shapes. 9.3.2 Sampling Pig Lead—A portion representative of the total shipment shall be selected at random for the final sample. For lots containing at least 100 000 lb (45 400 kg) of pig lead, one pig shall be taken from every 20 000 lb (9080 kg). For smaller lots, a total of five pigs shall be taken.

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