ASTM A922-05(R2020) pdf free download

ASTM A922-05(R2020) pdf free download.Standard Specification for Silicon Metal
1. Scope
1.1 This specification covers several grades ofsilicon metal. 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. The SI equivalents of inch- pound units given may be approximate. 1.3 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.
3. General Conditions for Delivery
3.1 Materials furnished to this specification shall conform to the requirements of Specification A1025/A1025M, including any supplementary requirements that are indicated in the purchase order. Failure to comply with the general require- ments of Specification A1025/A1025M constitutes nonconfor- mance with this specification. In case of conflict between the requirements of this specification and Specification A1025/ A1025M, this specification shall prevail.
4. Chemical Composition
4.1 The grades shall conform to the requirements as to the chemical composition specified in Table 1. 4.2 The manufacturer shall furnish an analysis of each shipment showing the percentage of each element specified. 4.3 Upon request of the purchaser, the manufacturer shall furnish an analysis of any trace elements on a schedule mutually agreed upon between the supplier and the purchaser.
5. Size
5.1 The various grades are available in sizes listed in Table 2. 5.2 The sizes listed in Table 2 are typical as shipped from the manufacturer’s plant. The various grades can exhibit different degrees of friability; therefore, some attrition may be expected in transit, storage, and handling. A quantitative test is not available for rating relative friability of silicon metal. A code system has been developed, therefore, for this purpose, and a number rating for each product type is shown in Table 3. Definitions applicable to these code numbers are given in Specification A1025/A1025M.
6. Chemical Analysis
6.1 The chemical analysis of the material shall be made in accordance with the procedure for silicon metal as described in Test Methods E360 or alternative methods that will yield equivalent results. 6.2 If alternative methods of analysis are used, in case of discrepancy, Test Methods E360 shall be used for referee. 6.3 Where a method is not given in Test Methods E360 for the analysis for a particular element, the analysis shall be made in accordance with a procedure agreed upon between the manufacturer and the purchaser. N OTE 1—For further information, see Practices E50 and E60.