Purpose

This specification covers the engineering requirements for heat treatment of aluminum alloy castings and for parts machined from castings.

Application

This specification is applicable to castings of the following aluminum alloys and modifications (See 8.2.8):

201.0

203.0

206.0

222.0

242.0

243.0

295.0

296.0

319.0

328.0

333.0

336.0

354.0

355.0

356.0

357.0

358.0

359.0

520.0

705.0

707.0

712.0

713.0

850.0

851.0

852.0

When AMS2771 is specified and specific heat treat processing instructions are included in the material specification, the equipment and control requirements of AMS2771 shall apply. For alloys not specifically covered, the provisions of this specification shall be applicable, but temperatures, times, and quenching procedures shall be as specified by the purchaser.