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 2017 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:/standards.sae.org/AMS4279B AEROSPACE MATERIAL SPECIFICATION AMS4279 REV. B Issued 1998-03 Revised 2006-06 Reaffir
5、med 2017-07 Superseding AMS4279A Aluminum Alloy, Alclad Sheet 4.4Cu - 1.5Mg - 0.60Mn (2024-T4 Flat Sheet) Solution Heat Treated, High Formability (Composition similar to UNS A82024) RATIONALE AMS4279B has been reaffirmed to comply with the SAE Five-Year Review policy. 1. SCOPE 1.1 Form This specific
6、ation covers an aluminum alloy in the form of sheet, clad on both sides with a different alloy. 1.2 Application This sheet has been used typically for formed structural parts of good strength, but usage is not limited to such applications. 1.2.1 Certain design and processing procedures may cause thi
7、s sheet to become susceptible to stress-corrosion cracking; ARP823 recommends practices to minimize such conditions. 2. APPLICABLE DOCUMENTS The issue of the following documents in effect on the date of the purchase order forms a part of this specification to the extent specified herein. The supplie
8、r 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 document shall apply. 2.1 SAE Publications Available from SAE Internationa
9、l, 400 Commonwealth Drive, Warrendale, PA 15096-0001, Tel: 877-606-7323 (inside USA and Canada) or 724-776-4970 (outside USA), www.sae.org. AMS 2355 Quality Assurance Sampling and Testing, Aluminum Alloys and Magnesium Alloys, Wrought Products, Except Forging Stock, and Rolled, Forged or Flash Welde
10、d Rings AMS 2772 Heat Treatment of Aluminum Alloy Raw Materials ARP823 Minimizing Stress-Corrosion Cracking in Wrought Heat-Treatable Aluminum Alloy Products SAE INTERNATIONAL AMS4279B Page 2 of 5 2.2 ASTM Publications Available from ASTM International, 100 Barr Harbor Drive, P.O. Box C700, West Con
11、shohocken, 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 Products ASTM E 290 Standard Test Methods for Bend Testing of Material for Ductility 2.3 ANSI Publications Available from Am
12、erican National Standards Institute, 25 West 43rd Street, New York, NY 10036, Tel: 212-642-4900, www.ansi.org. ANSI H 35.2 Dimensional Tolerances for Aluminum Mill Products ANSI H 35.2M Dimensional Tolerances for Aluminum Mill Products (Metric) 3. TECHNICAL REQUIREMENTS 3.1 Composition Shall conform
13、 to the percentages by weight shown in Table 1 and Table 2, determined in accordance with AMS 2355. TABLE 1 - COMPOSITION, CORE (2024) Element min maxSilicon - 0.50Iron - 0.50Copper 3.8 4.9 Manganese 0.30 0.9 Magnesium 1 .2 1.8 Chromium - 0.10Zinc - 0.25Titanium - 0.15Other Elements, each - 0.05Othe
14、r Elements, total - 0.15Aluminum remainder TABLE 2 - COMPOSITION, CLADDING (1230) Element min maxIron + Silicon - 0.7 Copper - 0.10Manganese - 0.05Magnesium - 0.05Zinc - 0.10Titanium - 0.03Vanadium - 0.05Other Elements, each - 0.03Aluminum by difference 99.3 - 3.2 Condition Solution heat treated in
15、accordance with AMS 2772. SAE INTERNATIONAL AMS4279B Page 3 of 5 3.3 Properties This sheet shall conform to the following requirements determined in accordance with AMS 2355: 3.3.1 Tensile Properties Shall be as shown in Table 3. TABLE 3A - MINIMUM TENSILE PROPERTIES, INCH/POUND UNITS Nominal Thickn
16、ess Inch TensileStrengthksi Yield Strengthat 0.2% Offsetksi Elongation in 2 Inches or 4D % Over 0.020 to 0.062, incl 58 36 15 Over 0.062 to 0.128, incl 61 38 15 TABLE 3B - MINIMUM TENSILE PROPERTIES, SI UNITS Nominal Thickness Millimeters TensileStrengthMPa Yield Strengthat 0.2% OffsetMPa Elongation
17、 in 50.8 mm or 4D % Over 0.51 to 1.57, incl 400 248 15 Over 1.57 to 3.25, incl 421 262 15 3.3.2 Bending Specimens nominally 0.750 inch (19.06 mm) in width, shall withstand without cracking when examined using at least 10X magnification, bending in accordance with ASTM E290 through a minimum angle of
18、 180 degrees around a diameter equal to the bend factor shown in Table 4 times the nominal thickness of the product, with axis of bend parallel to the direction of rolling. TABLE 4 - BENDING PARAMETERS Nominal Thickness Inch Nominal Thickness Millimeters Bend Factor Over 0.020 to 0.051, incl Over 0.
19、51 to 1.30, incl 2 Over 0.051 to 0.128, incl Over 1.30 to 3.25, incl 3 3.3.3 Cladding Thickness After rolling, the average cladding thickness shall be as shown in Table 5. TABLE 5 - AVERAGE CLADDING THICKNESS Nominal Thickness Inch Nominal Thickness Millimeters Average Cladding Thickness Per Side %
20、of Thickness minimum Over 0.020 to 0.062, incl Over 0.51 to 1.57, incl 4.0 Over 0.062 to 0.128, incl Over 1.57 to 3.25, incl 2.0 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
21、of the product. 3.5 Tolerances Shall conform to all applicable requirements of ANSI H35.2 or ANSI H35.2M. SAE INTERNATIONAL AMS4279B Page 4 of 5 4. QUALITY ASSURANCE PROVISIONS 4.1 Responsibility for Inspection The vendor of the sheet shall supply all samples for vendors tests and shall be responsib
22、le 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 sheet conforms to specified requirements. 4.2 Classification of Tests 4.2.1 Acceptance Tests Composition (3.1), tensile properties (3.3.1),
23、 bending parameters (3.3.2), and tolerances (3.5) are acceptance tests and, except for composition, shall be performed on each inspection lot. 4.2.2 Periodic Tests Cladding thickness (3.3.3) is a periodic test and shall be performed at a frequency selected by the vendor unless frequency of testing i
24、s specified by purchaser. 4.3 Sampling and Testing Shall be in accordance with AMS 2355. 4.4 Reports The vendor of sheet shall furnish with each shipment a report stating that the sheet conforms to the composition and tolerances and showing the numerical results of tests on each inspection lot to de
25、termine conformance to the other acceptance test requirements. This report shall include the purchase order number, inspection lot number, AMS 4279B, size, and quantity. The report shall also include the producer, the product form, and the size of the mill product. 4.5 Resampling and Retesting Shall
26、 be in accordance with AMS 2355. 5. PREPARATION FOR DELIVERY 5.1 Identification Shall be in accordance with ASTM B 666/B 666M. 5.2 Packaging 5.2.1 Sheet shall be protected, during shipment and storage, by interleaving with paper sheets. 5.2.2 Sheet shall be prepared for shipment in accordance with A
27、STM B 660 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 wh
28、en acknowledging purchase orders. 7. REJECTIONS Sheet not conforming to this specification, or to modifications authorized by purchaser, will be subject to rejection. SAE INTERNATIONAL AMS4279B Page 5 of 5 8. NOTES 8.1 A change bar (|) located in the left margin is for the convenience of the user in
29、 locating areas where technical revisions, not editorial changes, have been made to the previous issue of a specification. An (R) symbol to the left of the document title indicates a complete revision of the specification, including technical revision. Change bars and (R) are not used in original pu
30、blications, nor in specifications that contain editorial changes 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: AMS 4279B Size of sheet desired Quantity of sheet desired. PREPARED BY AMS COMMITTEE “D”
