ASTM B85/B85M-2018 铝合金压铸件规格 Standard Specification for Aluminum-Alloy Die Castings

1.1 This specification covers aluminum-alloy die castings designated as shown in Table 1. (A) When single units are shown, they indicate the maximum amounts permitted.(B) Analysis shall be made for the elements for which limits are shown in this table.(C) The following applies to all specified limits in this table: For purposes of determining conformance to these limits, an observed value or a calculated value obtained from analysis shall be rounded to the nearest unit in the last right-hand place of figures used in expressing the specified limit in accordance with the rounding-off method of Practice E29.(D) In case of discrepancy between the values listed in Table 1 and those listed in the “Designations and Composition Limits for Aluminum Alloys in the Form of Castings and Ingot (known as the “œPink Sheets”), the composition limits registered with the Aluminum Association and published in the “œPink Sheets”€ shall be considered the controlling composition.(E) “Others” includes listed elements for which no specific limit is shown as well as unlisted metallic elements. The producer may analyze samples for trace elements not specified in the registration or specification. However, such analysis is not required and may not cover all metallic “Others” elements. Should any analysis by the producer or the purchaser establish that an “Others” element exceeds the limit of “Each” or that the aggregate of several “Others” elements exceeds the limit of “Total”, the material shall be considered nonconforming.(F) The sum of those “Others” metallic elements 0.010 % or more each, expressed to the second decimal before determining the sum(G) Alloys 360.0, 380.0, 413.0, C443.0 and 518.0 are suitable for the production of die casting by either the