1、_ SAE Technical Standards Board Rules provide that: “This report is published by SAE to advance the state of technical and engineering sciences. The use of this report is entirely voluntary, and its applicability and suitability for any particular use, including any patent infringement arising there
2、from, is the sole responsibility of the user.” SAE reviews each technical report at least every five years at which time it may be reaffirmed, revised, or cancelled. SAE invites your written comments and suggestions. Copyright 2011 SAE International All rights reserved. No part of this publication m
3、ay be reproduced, stored in a retrieval system or transmitted, in any form or by any means, electronic, mechanical, photocopying, recording, or otherwise, without the prior written permission of SAE. TO PLACE A DOCUMENT ORDER: Tel: 877-606-7323 (inside USA and Canada) Tel: +1 724-776-4970 (outside U
4、SA) Fax: 724-776-0790 Email: CustomerServicesae.org SAE WEB ADDRESS: http:/www.sae.org SAE values your input. To provide feedback on this Technical Report, please visit http:/www.sae.org/technical/standards/AMS4085D AEROSPACE MATERIAL SPECIFICATION AMS4085 REV. D Issued 1976-07 Revised 2011-05 Super
5、seding AMS4085C Aluminum Alloy Sheet 5.7Zn - 2.2Mg - 1.6Cu - 0.22Cr (7475-T761) Solution Heat Treated and Overaged (Composition similar to UNS A97475)RATIONALE AMS4085D deletes alternate testing for demonstration of fracture toughness (3.3.4, 3.3.4.1), revises acceptance and periodic test requiremen
6、ts (4.2.1, 4.2.2) as well as sampling for fracture toughness testing (4.3.1), and results from a Five Year Review and update of this specification. 1. SCOPE 1.1 Form This specification covers an aluminum alloy in the form of sheet. 1.2 Application This product has been used typically for structural
7、applications requiring sheet with high strength and resistance to exfoliation-corrosion, moderate fatigue strength, and high fracture-toughness, 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 for
8、ms 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 cancelled and no superseding document has been specified, the last published issue of that
9、 document shall apply. 2.1 SAE Publications Available from SAE International, 400 Commonwealth Drive, Warrendale, PA 15096-0001, Tel: 877-606-7323 (inside USA and Canada) or 724-776-4970 (outside USA), www.sae.org. AMS2355 Quality Assurance, Sampling and Testing, Aluminum Alloys and Magnesium Alloy
10、Wrought Products (Except Forging Stock), and Rolled, Forged, or Flash Welded Rings AMS2772 Heat Treatment of Aluminum Alloy Raw Materials AS1990 Aluminum Alloy Tempers SAE AMS4085D Page 2 of 5 2.2 ASTM Publications Available from ASTM International, 100 Barr Harbor Drive, P.O. Box C700, West Conshoh
11、ocken, PA 19428-2959, Tel: 610-832-9585, www.astm.org. ASTM B 646 Fracture Toughness Testing of Aluminum Alloy ASTM B 660 Packing of Aluminum and Magnesium Products ASTM B 666/B 666M Identification Marking of Aluminum and Magnesium Products ASTM E 561 K-R Curve Determination ASTM G 34 Exfoliation Co
12、rrosion Susceptibility in 2XXX and 7XXX Series Aluminum Alloys (EXCO Test) 2.3 ANSI Publications Available from American National Standards Institute, 25 West 43rd Street, New York, NY 10036-8002, Tel: 212-642-4900, www.ansi.org. ANSI H 35.2 Dimensional Tolerances for Aluminum Mill Products ANSI H 3
13、5.2M Dimensional Tolerances for Aluminum Mill Products (Metric) 3. TECHNICAL REQUIREMENTS 3.1 Composition Shall conform to the following percentages by weight, determined in accordance with AMS2355: TABLE 1 - COMPOSITION Element min max Silicon Iron Copper Manganese Magnesium Chromium Zinc Titanium
14、Other Elements, each Other Elements, total Aluminum - - 1.2 - 1.9 0.18 5.2 - - - remainder0.10 0.12 1.9 0.06 2.6 0.25 6.2 0.06 0.05 0.15 3.2 Condition Solution heat treated and precipitation heat treated to the T761 temper (See AS1990) in accordance with AMS2772. 3.3 Properties Sheet 0.040 inch (1.0
15、2 mm) and over in nominal thickness shall conform to the following requirements, determined in accordance with AMS2355, except fracture toughness (3.3.3) shall performed as indicated in the appropriate paragraph. Tests are to be performed on the mill produced size. SAE AMS4085D Page 3 of 5 3.3.1 Ten
16、sile Properties Shall be as shown in Table 2. TABLE 2A - MINIMUM TENSILE PROPERTIES, INCH/POUND UNITS Nominal Thickness Inches Specimen Orientation Tensile Strength ksi Yield Strength at 0.2% Offset ksi Elongation in 2 Inches % 0.040 to 0.249, incl Longitudinal 71.0 61.0 9 Long-Transverse 71.0 60.0
17、9 TABLE 2B - MINIMUM TENSILE PROPERTIES, SI UNITS Nominal Thickness Millimeters Specimen Orientation Tensile Strength MPa Yield Strength at 0.2% Offset MPa Elongation in 50.8 mm % 1.02 to 6.32, incl Longitudinal 490 421 9 Long-Transverse 490 414 9 3.3.2 Exfoliation Corrosion Resistance 3.3.2.1 Resis
18、tance to exfoliation corrosion shall be determined according to the following criteria: 3.3.2.1.1 If the electrical conductivity is 39.0% IACS (International annealed Copper Standard) (22.7 MS/m) or higher and the long-transverse yield strength does not exceed the specified minimum by 9000 psi (62 M
19、Pa) or more, the sheet is acceptable. 3.3.2.1.2 If the conductivity is 39.0% IACS (22.7 MS/m) or higher and the long-transverse yield strength exceeds the specified minimum by 9000 psi (62 MPa) or more, the sheet is unacceptable. 3.3.2.1.3 If the conductivity is less than 39.0% IACS (22.7 MS/m), the
20、 sheet is unacceptable. 3.3.2.2 Sheet found to be unacceptable may be given additional overaging heat treatment or be entirely reheat treated and if, after completion of either treatment, it meets the criteria of 3.3.1 and 3.3.2, it is acceptable. 3.3.2.3 Sheet under 0.100 inch (2.54 mm) in nominal
21、thickness examined on the surface and sheet 0.100 inch (2.54 mm) and over in nominal thickness (T) examined at T/10 plane, shall show exfoliation corrosion not greater than that pictured in Photo B, Figure 2 of ASTM G 34. 3.3.3 Fracture Toughness Plane stress fracture toughness (KC) shall be as show
22、n in Table 3, determined in accordance with ASTM B 646 and ASTM E 561. TABLE 3 - FRACTURE TOUGHNESS CRITERIA Nominal Thickness Inch Nominal Thickness Millimeters Kc minimumT-L Direction ksi inch1/2Kc minimumT-L Direction MPa m1/20.040 to 0.125, incl 1.02 to 3.18, incl 87 96 Over 0.125 to 0.249, incl
23、 Over 3.18 to 6.32, incl 80 88 3.4 Quality Sheet, 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 sheet. SAE AMS4085D Page 4 of 5 3.5 Tolerances Shall conform to all applicable requirements
24、 of ANSI H35.2 or ANSI H35.2M. 4. QUALITY ASSURANCE PROVISIONS 4.1 Responsibility for Inspection The vendor of sheet shall supply all samples for vendors tests and shall be responsible for the performance of all required tests. Purchaser reserves the right to sample and to perform any confirmatory t
25、esting deemed necessary to ensure that the sheet conforms to specified requirements. 4.2 Classification of Tests 4.2.1 Acceptance Tests Composition (3.1), tensile properties (3.3.1), exfoliation corrosion resistance (3.3.2), fracture toughness (3.3.3), and dimensional tolerances (3.5) are acceptance
26、 tests and except for composition, shall be performed on each inspection lot. 4.2.2 Periodic Tests Exfoliation corrosion resistance determined in accordance with 3.3.2.3 is a periodic test and shall be performed at a frequency selected by the vendor unless frequency of testing is specified by purcha
27、ser. 4.3 Sampling and Testing Shall be in accordance with AMS2355 and the following: 4.3.1 Sampling for fracture toughness testing (3.3.3) shall be as acceptable to purchaser. 4.3.2 Specimens for conductivity testing shall be the tensile samples. 4.4 Reports The vendor of sheet shall furnish with ea
28、ch shipment a report stating that the sheet conforms to the composition and tolerances, and showing numerical results of the other technical requirements of this specification. This report shall include the purchase order number, inspection lot number, AMS4085D, size, and quantity. The report shall
29、also identify the producer, the product form, and the mill produced size. 4.5 Resampling and Retesting Shall be in accordance with AMS2355. 5. PREPARATION FOR DELIVERY 5.1 Identification Shall be in accordance with ASTM B 666/B 666M. 5.2 Packaging 5.2.1 Product shall be protected from damage during
30、storage and shipment by a method determined by vendor unless specified by purchaser. Examples of typical protective methods include but are not limited to interleaving with paper or oiling of the surface. SAE AMS4085D Page 5 of 5 5.2.2 Sheet shall be prepared for shipment in accordance with ASTM B 6
31、60 and in compliance with applicable rules and regulations pertaining to the handling, packaging and transportation of the sheet to ensure carrier acceptance and safe delivery. 6. ACKNOWLEDGMENT A vendor shall mention this specification number and its revision letter in all quotations and when ackno
32、wledging purchase orders. 7. REJECTIONS Sheet not conforming to this specification, or to modifications authorized by purchaser, will be subject to rejection. 8. NOTES 8.1 A change bar (l) located in the left margin is for the convenience of the user in locating areas where technical revisions, not
33、editorial changes, have been made to the previous issue of this document. An (R) symbol to the left of the document title indicates a complete revision of the document, including technical revisions. Change bars and (R) are not used in original publications, nor in documents that contain editorial c
34、hanges only. 8.2 Terms used in AMS are clarified in ARP1917. 8.3 Dimensions and properties in inch/pound units and the Fahrenheit temperatures are primary; dimensions and properties in SI units and the Celsius temperatures are shown as the approximate equivalents of the primary units and are presented only for information. 8.4 Purchase documents should specify not less than the following: AMS4085D Size of sheet desired Quantity of sheet desired. PREPARED BY AMS COMMITTEE “D”
