標準號：SAE ARP 1947B-2007
中文標準名稱：航空器結構質量D357型鋁合金鑄件枝狀晶體分支間距的測定和驗收
英文標準名稱：Dendrite Arm Spacing of Structural Aircraft Quality D357 Aluminum Alloy Castings, Determination and Acceptance of
標準類型：V11
發布日期：2007/8/1 12:00:00
實施日期：1999/12/31 12:00:00
中國標準分類號：V11
國際標準分類號：49.025.20
引用標準：ASTM B 557-2006;ASTM B 557M-2006;ASTM B 557M-2007
適用范圍：This document covers the recommended practice for determining the acceptability of the dendrite arm spacing (DAS) of D357-T6 aluminum alloy castings required to have tensile strength not lower than 50,000 psi (345 MPa). To apply this method, at least two coupons used for DAS measurement and tensile testing, shall be attached to the casting in locations as defined by the cognizant engineering organization. Areas of the casting which require DAS control must be accessible for surface DAS measurements.