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SAE ARP1947

Revision B, August 1, 2007

Complete Document

Dendrite Arm Spacing of Structural Aircraft Quality D357 Aluminum Alloy Castings, Determination and Acceptance of



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Product Details:

  • Revision: Revision B, August 1, 2007
  • Published Date: August 2007
  • Status: Active, Most Current
  • Document Language: English
  • Published By: SAE International (SAE)
  • Page Count: 8
  • ANSI Approved: No
  • DoD Adopted: Yes

Description / Abstract:

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.

Safety-Hazardous Materials

While the materials, methods, applications, and processes described or referenced in this specification may involve the use of hazardous materials, this specification does not address the hazards which may be involved in such use. It is the sole responsibility of the user to ensure familiarity with the safe and proper use of any hazardous materials and to take necessary precautionary measures to ensure the health and safety of all personnel involved.

AIA/NAS Aerospace Standards