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 revised, reaffirmed, stabilized, or cancelled. SAE invites your written comments and suggestions. Copyright 2014 SAE International All rights reserved. No part of this p
3、ublication may 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: +1 724-776-497
4、0 (outside USA) 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/AMS4457 AEROSPACE MATERIAL SPECIFICATION AMS4457 Issued 2008-08 Reaffirmed 2014-0
5、4 Aluminum Alloy, Sheet 3.5Cu - 1.1Li - 0.50Mg - 0.40Ag - 0.12Zr (2098-T8) Solution Heat Treated, Cold Worked, and Artificially Aged (Composition similar to UNS A92098) RATIONALE AMS4457 has been reaffirmed to comply with the SAE five-year review policy. 1. SCOPE 1.1 Form This specification covers a
6、n aluminum alloy in the form of sheet. 1.2 Application This product has been used for aircraft applications where if offers a combination of high strength and low density, but usage is not limited to such applications. 2. APPLICABLE DOCUMENTS The issue of the following documents in effect on the dat
7、e of the purchase order forms 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 l
8、ast published issue of that 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 A
9、lloys and Magnesium Alloy, Wrought Products, Except Forging Stock, and Rolled, Forged, or Flash Welded Rings AMS2772 Heat Treatment of Aluminum Alloy Raw Materials AS1990 Aluminum Alloy Tempers 2.2 ASTM Publications Available from ASTM International, 100 Barr Harbor Drive, P.O. Box C700, West Consho
10、hocken, PA 19428-2959, Tel: 610-832-9585, www.astm.org. ASTM B 660 Packaging/Packing of Aluminum and Magnesium Products ASTM B 666/B 666M Identification Marking of Aluminum and Magnesium Products SAE INTERNATIONAL AMS4457 Page 2 of 4 2.3 ANSI Publications Available from American National Standards I
11、nstitute, 25 West 43rd Street, New York, NY 10036, Tel: 212-642-4900, www.ansi.org. 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
12、 shown in Table 1, determined in accordance with AMS2355. TABLE 1 - COMPOSITION Element min maxSilicon - 0.12Iron - 0.15Copper 3.2 3.8 Manganese - 0.35Magnesium 0.25 0.80Zinc - 0.35Titanium - 0.10Silver 0.25 0.60Lithium 0.8 1.3 Zirconium 0.04 0.18Other Elements, each - 0.05Other Elements, total - 0.
13、15Aluminum remainder 3.2 Condition Product shall be supplied in the following condition: 3.2.1 Solution heat treated, cold worked and artificially aged to T8 temper (See AS1990). 3.3 Heat Treatment Shall be performed in accordance with AMS2772 and as follows: 3.3.1 Solution Heat Treatment Temperatur
14、e 960 to 980 F (516 to 527 C) 3.3.2 Aging Heat Treatment Aging shall be performed at a specific temperature and time as required to meet requirements of 3.4. (See 8.2) . 3.4 Properties The product shall conform to the following requirements determined in accordance with AMS2355 on the mill produced
15、size . 3.4.1 Tensile Properties Shall be as shown in Table 2. SAE INTERNATIONAL AMS4457 Page 3 of 4 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 or 4D% 0.125 to 0.24
16、9, incl Longitudinal 77.0 71.0 6 Long-Trans. 74.0 69.0 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 % 3.2 to 6.3, incl Longitudinal 531 490 6 Long-Trans. 510 476 3.5 Qua
17、lity The product, 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 product. 3.6 Tolerances Shall conform to all applicable requirements of ANSI H35.2 or ANSI H35.2M. 4. QUALITY ASSURANCE PRO
18、VISIONS 4.1 Responsibility for Inspection The vendor of the product 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 testing deemed necessary to ensure that the produc
19、t conforms to specified requirements. 4.2 Classification of Tests 4.2.1 Acceptance Tests Composition (3.1), tensile properties (3.4.1), and tolerances (3.6) are acceptance tests, and except for composition, shall be performed on each inspection lot. 4.3 Sampling and Testing Shall be in accordance wi
20、th AMS2355. 4.4 Reports The vendor of the product shall furnish with each shipment a report stating that the product conforms to the composition requirements and tolerances and showing the numerical results of tests to determine conformance to the other acceptance test requirements. This report shal
21、l include the purchase order number, inspection lot number(s), AMS4XXX, size, and quantity. The report shall also identify the producer, the product form, and the mill produced size. 4.5 Resampling and Retesting Shall be in accordance with AMS2355. SAE INTERNATIONAL AMS4457 Page 4 of 4 5. PREPARATIO
22、N 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 storage and shipment by a method determined by vendor, unless specified by purchaser. Examples of typical protective methods include but not limited to a
23、re interleaving with paper or oiling of the surface. 5.2.2 Sheet shall be prepared for shipment in accordance with ASTM B 660 and in compliance with applicable rules and regulations pertaining to the handling, packaging, and transportation of the product to ensure carrier acceptance and safe deliver
24、y. 6. ACKNOWLEDGMENT A vendor shall include this specification number and its revision letter in all quotations and when acknowledging purchase orders. 7. REJECTIONS Product not conforming to this specification, or to modifications authorized by purchaser, will be subject to rejection. 8. NOTES 8.1
25、A change bar (|) located in the left margin is for the convenience of the user in locating areas where technical revisions, not 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, inc
26、luding technical revisions. Change bars and (R) are not used in original publications, nor in documents that contain editorial changes only. 8.2 Actual aging temperature and time are proprietary. 8.3 Terms used in AMS are clarified in ARP1917. 8.4 Dimensions and properties in inch/pound units and th
27、e 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. 8.5 Purchase documents should specify not less than the following: AMS4457 Form and size of product required Quantity of products required. PREPARED BY AMS COMMITTEE “D”
