1. Scope
1.1 This practice describes procedures for sampling finished or semi-finished wrought or cast aluminum product to obtain the most representative sample for determining chemical composition. 1.2 Chemical compositions determined from such samples may differ from the bulk composition determined using samples taken when ingots or castings are poured as a result of elemental segregation upon solidification and procedures that remove enriched material (for example, ingot scalping) or procedures that remove depleted areas (for example, removal of the riser from a casting). Analysis of samples obtained from fabricated and cast aluminum product can be used to determine if the piece(s) sampled meet(s) the aluminum association specifications for the alloy. Analysis of samples obtained from fabricated and cast aluminum product shall not be used for determining compliance with composition requirements for an entire cast lot. NOTE 1-Pieces may include ingots, forgings, coils, sheets, extrusions, castings, and so forth. NOTE 2-Certification of entire cast lots should be determined using samples taken during pouring of castings or ingots in accordance with E716 and analyzed in accordance with E607, E1251, E34, or EN 14242. 1.3 Units-The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in nonconformance with the 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 establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
This practice is intended to replace E55 and E88 which are not applicable to aluminum. Standard will likely be used for quality control and verification.
Keywords
chemical composition; chemical analysis; ingot; castings; extrusions; plate; sheet; forgings; wire; rod; bar
The title and scope are in draft form and are under development within this ASTM Committee.
Citing ASTM Standards
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