SAE AMS 4078F:2000 pdf download

SAE AMS 4078F:2000 pdf download Aluminum Alloy Plate (7075-T7351 ) Solution Heat Treated, Stress Relieved, and Overaged
1 . SCOPE:
1 .1 Form:
This specification covers an aluminum alloy in the form of plate.
1 .2 Application:
This plate has been used typically for machined parts subject to excessive warpage during machining due to residual stresses and for parts requiring high strength and resistance to stress- corrosion cracking, but usage is not limited to such applications.
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 2355 Quality Assurance Sampling and Testing, Aluminum Alloys and Magnesium Alloys,Wrought Products, Except Forging Stock, and Rolled, Forged, or Flash Welded Rings
MAM 2355 Quality Assurance Sampling and Testing, Aluminum Alloys and Magnesium Alloys, Wrought Products, Except Forging Stock and Rolled, Forged, or Flash Welded Rings, Metric (SI) Units
2.2 ASTM Publications:
Available from ASTM, 1 00 Barr Harbor Drive, West Conshohocken, PA 1 9428-2959.
ASTM B 666/B 666M Identification Marking of Aluminum Products
2.3 U.S. Government Publications:
Available from DODSSP, Subscription Services Desk, Building 4D, 700 Robbins Avenue,
Philadelphia, PA 1 9111 -5094.
MIL-H-6088 Heat Treatment of Aluminum Alloys
2.4 ANSI Publications:
Available from ANSI, 11 West 42nd Street, New York, NY 1 0036-8002.
ANSI H35.2 Dimensional Tolerances for Aluminum Mill Products
ANSI H35.2M Dimensional Tolerances for Aluminum Mill Products (Metric)
3. TECHNICAL REQUIREMENTS:
3.1 Composition:
Shall conform to the percentages by weight shown in Table 1 , determined in accordance with AMS 2355 or MAM 2355.
3.2 Condition:
Solution heat treated, stretched to produce a nominal permanent set of 2%, but not less than 1 -1 /2% nor more than 3%, and precipitation heat treated; heat treatment shall be performed in accordance with MIL-H-6088.
3.2.1 Plate shall receive no straightening operations after stretching.
3.3 Properties:
Plate shall conform to the following requirements, determined in accordance with AMS 2355 or
MAM 2355 on the mill produced size.
3.3.1 Tensile Properties: Shall be as specified in Table 2.
3.3.2 Corrosion Resistance: Resistance to stress corrosion cracking and to exfoliation-corrosion shall be acceptable if the plate conforms to 3.3.2.1 or 3.3.2.2.
3.3.2.1 If electrical conductivity is not lower than 38.0% IACS (International Annealed Copper Standard) (22.0 MS/m), determined on the surface of specimens used for tensile testing.
3.3.2.2 If electrical conductivity is 38.0 to 39.9% (22.0 to 23.1 MS/m) inclusive, and yield strength does not exceed the specified minimum by more than 11 .9 ksi (82 MPa).
3.3.2.3 If the requirements of 3.3.2.1 or 3.3.2.2 are not met, the plate may be given additional precipitation heat treatment or re-heat treated. If, after such treatment, all specified properties are met, the plate is acceptable. 3.3.2.4 If the conductivity is below 38.0% IACS (22.0 MS/m), the product is not acceptable and must be reprocessed regardless of tensile property load.
3.3.3 Stress-Corrosion Resistance: Specimens cut from plate 0.750 inches (1 9.05 mm) and over in nominal thickness shall show no evidence of stress-corrosion cracking when stressed in the short- transverse direction to 75% of the applicable minimum yield strength specified in 3.3.1 .