SAE AMS 4803D:2000 pdf download

SAE AMS 4803D:2000 pdf download Zinc Alloy Castings, Die 4.0Al – 0.04Mg (AG40A) As Cast
1 . SCOPE:
1 .1 Form:
This specification covers a zinc alloy in the form of die castings.
1 .2 Application:
These castings have been used typically for components requiring moderate strength at room temperature.
2. APPLICABLE DOCUMENTS:
The issue of the following documents in effect on the date of the purchase order form a part of this specification to the extent specified herein. The supplier may work to a subsequent revision of a document unless a specific document issue is specified. When the referenced document has been canceled and no superseding document has been specified, the last published issue of that document shall apply.
2.1 SAE Publications:
Available from SAE, 400 Commonwealth Drive, Warrendale, PA 1 5096-0001 .
AMS 2694 Repair Welding of Aerospace Castings
AMS 2804 Identification, Castings
2.2 ASTM Publications:
Available from ASTM, 1 00 Barr Harbor Drive, West Conshohocken, PA 1 9428-2959.
ASTM E 47 Chemical Analysis of Zinc Die-Casting Alloys
ASTM E 1 220 Visible Penetrant Examination Using the Solvent-Removable Process
ASTM E 1 41 7 Liquid Penetrant Inspection
3. TECHNICAL REQUIREMENTS:
3.1 Composition:
Shall conform to the percentages by weight shown in Table 1 , determined by wet chemical methods in accordance with ASTM E 47 or by spectrochemical or other analytical methods acceptable to purchaser.
3.2 Condition:
As cast.
3.3 Casting:
Castings shall be produced in lots from metal conforming to 3.1 . Metal remelted from previously analyzed ingot may be poured directly into castings. Furnace or ladle additions of grain-refining elements or alloys are permissible. Molten metal taken from alloying furnaces, with or without additions of foundry operating scrap (gates, sprues, risers, and rejected castings), shall not be poured into castings unless first converted to ingot, analyzed, and remelted or unless the composition of a sample taken after the last addition to the melt conforms to 3.1 .
3.3.1 A melt shall be the metal withdrawn from a batch-furnace charge of 2000 pounds (907 kg) or less as melted for pouring castings or, when permitted by purchaser, a melt shall be 4000 pounds (1 81 4 kg) or less of metal withdrawn from one continuous furnace in not more than eight consecutive hours.
3.3.2 A lot shall be all castings poured from a single melt in not more than eight consecutive hours.
3.4 Chemical Analysis Specimens: Shall be cast from each melt and shall be of any suitable size and shape appropriate to the test method.
3.5 Quality:
3.5.1 Castings, as received by purchaser, shall be uniform in quality and condition, sound, and free from foreign materials and from imperfections detrimental to usage of the castings.
3.5.1 .1 Castings shall have smooth surfaces and shall be cleaned sufficiently to permit nondestructive inspection.
3.5.2 When specified, castings shall be produced under radiographic control. This control shall consist of 1 00% radiographic inspection of castings until process control factors (4.4.2) have been established to ensure production of acceptable castings. Unless otherwise specified by purchaser, continued radiographic inspection of production castings shall be performed at a frequency determined by the vendor to ensure continued maintenance of internal quality.