1、AEROSPACEMATERIAL SPECIFICATIONAMS4479Issued 2015-01Aluminum Alloy, Extruded Profiles (2824-T3511)4.0Cu - 1.35Mg - 0.7MnSolution Heat Treated and Stress Relieved by Stretching(Composition similar to UNS A92824)RATIONALEAMS4479 is a new specification for aluminum alloy 2824 extruded profiles, solutio
2、n heat treated and stress relieved by stretching.1. SCOPE1.1 FormThis specification covers an aluminum alloy in the form of extruded profiles with a maximum cross-sectional area of 25 in2(160.29 cm2) and nominal thicknesses from 0.250 to 2.500 inch, inclusive (6.3 to 63.50 mm, inclusive).1.2 Applica
3、tionThese extrusions have been used typically for machined parts requiring dimensional stability during machining processes, high strength and damage tolerance, but usage is not limited to such applications.1.2.1 Certain processing procedures may cause this product to become susceptible to stress-co
4、rrosion cracking; ARP823 recommends practices to minimize such conditions.2. APPLICABLE DOCUMENTSThe 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 supplier may work to a subsequent revision of a doc
5、ument 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 PublicationsAvailable from SAE International, 400 Commonwealth Drive, Warrendale, PA 1509
6、6-0001, 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, Wrought Products(Except Forging Stock), and Rolled, Forged, or Flash Welded RingsAMS2772 Heat Treatment of Aluminum Alloy
7、 Raw Materials_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
8、arising therefrom, 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 InternationalAll rights reserved. No part
9、 of this publication 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
10、-776-4970 (outside USA)Fax: 724-776-0790Email: CustomerServicesae.orgSAE WEB ADDRESS: http:/www.sae.orgSAE values your input. To provide feedbackon this Technical Report, please visithttp:/www.sae.org/technical/standards/AMS4479 SAE INTERNATIONAL AMS4479 Page 2 of 5AS1990 Aluminum Alloy TempersARP82
11、3 Minimizing Stress-Corrosion Cracking in Wrought Heat-Treatable Aluminum Alloy Products2.2 ANSI PublicationsAvailable 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 Produc
12、tsANSI H 35.2M Dimensional Tolerances for Aluminum Mill Products (Metric)2.3 ASTM PublicationsAvailable from ASTM International, 100 Barr Harbor Drive, P.O. Box C700, West Conshohocken, PA 19428-2959, Tel: 610-832-9585, www.astm.org.ASTM B 594 Ultrasonic Inspection of Aluminum Alloy Wrought Products
13、 for Aerospace Applications ASTM B 660 Packaging of Aluminum and Magnesium ProductsASTM B 666/B 666M Identification Marking of Aluminum and Magnesium Products3. TECHNICAL REQUIREMENTS3.1 CompositionShall conform to the percentages by weight shown in Table 1, determined in accordance with AMS2355.TAB
14、LE 1 - CompositionElement min maxSilicon - 0.08Iron - 0.11Copper 3.7 4.3Manganese 0.50 0.9Magnesium 1.1 1.6Chromium - 0.05Zinc - 0.25Titanium - 0.15Other Elements, each - 0.05Other Elements, total - 0.15Aluminum remainder3.2 ConditionExtruded, solution heat treated and stress relieved by stretching
15、to produce a nominal permanent set of 2%, but not less than 1% nor more than 3%, to the -T3511 temper (See AS1990). 3.2.1 Product shall be supplied with an as-extruded surface finish; light polishing to remove minor surface conditions is permissible provided such conditions can be removed within spe
16、cified dimensional tolerances.3.2.2 Product may receive minor straightening, after stretching, of an amount necessary to meet the requirements of 3.6.SAE INTERNATIONAL AMS4479 Page 3 of 53.3 Heat TreatmentSolution heat treatment shall be in accordance with AMS2772, with the solution heat treating te
17、mpature range between 910 and 930 F.3.4 PropertiesProduct shall conform to the following requirements, determined on the mill produced size in accordance with AMS2355:3.4.1 Longitudinal and long transverse tensile properties, when specified (See 8.5), of extrusions with a maximum cross-sectional are
18、a of 25 square inches (160.29 cm), shall be as specified in Table 2. TABLE 2A - Minimum Tensile Properties, Inch/Pound UnitsNominal ThicknessInchesSpecimenOrientationTensileStrengthksiYield StrengthAt 0.2% OffsetksiElongationin 2 inches or 4D%0.250 to 0.499, inclLongitudinalLong-Transverse71.068.054
19、.048.012-0.500 to 0.749, inclLongitudinalLong-Transverse73.068.055.047.01180.750 to 0.999, inclLongitudinalLong-Transverse73.067.055.047.01181.000 to 1.499, inclLongitudinalLong-Transverse74.066.056.047.01181.500 to 1.999, inclLongitudinalLong-Transverse74.065.056.046.01182.000 to 2.500, inclLongitu
20、dinalLong-Transverse74.064.056.046.0108TABLE 2B - Minimum Tensile Properties, SI UnitsNominal ThicknessMillimetersSpecimenOrientationTensileStrengthMPaYield StrengthAt 0.2% OffsetMPaElongationin 50.8 mm or 4D%Over 6.3 to 12.67, inclLongitudinalLong-Transverse49046937233112-Over 12.67 to 19.02, inclL
21、ongitudinalLong-Transverse503469379324118Over 19.02 to 25.37, inclLongitudinalLong-Transverse503462379324118Over 25.37 to 38.07, inclLongitudinalLong-Transverse510455386324118Over 38.07 to 50.77, inclLongitudinalLong-Transverse510448386317118Over 50.77 to 63.50, inclLongitudinalLong-Transverse510441
22、3863171083.4.2 Mechanical properties outside the range covered by 3.4.1 shall be agreed upon between purchaser and producer.3.5 QualityProducts, as received by purchaser, shall be uniform in quality and condition, sound, and free from foreign materials and from conditions detrimental to usage of the
23、 extrusions.SAE INTERNATIONAL AMS4479 Page 4 of 53.5.1 When specified, each extruded profile having a maximum width-to-thickness ratio of 10:1 shall meet ultrasonic class B requirements, as described in ASTM B 594 (See 8.5).3.6 TolerancesShall conform to all applicable requirements of ANSI H 35.2 or
24、 ANSI H 35.2M. 4. QUALITY ASSURANCE PROVISIONS4.1 Responsibility for InspectionThe vendor of the products 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 deem
25、ed necessary to ensure that the products conform to specified requirements.4.2 Classification of Tests4.2.1 Acceptance TestsComposition (3.1), longitudinal and long transverse (when specified) tensile properties (3.4.1), ultrasonic inspection when specified (3.5.1), and tolerances (3.6) are acceptan
26、ce tests and, except for composition, shall be performed on each inspection lot.4.3 Sampling and TestingShall be in accordance with AMS2355.4.4 ReportsThe vendor of the product shall furnish with each shipment a report stating that the product conforms to the composition, ultrasonic inspection when
27、specified, and tolerances and showing the numerical results of tests on each inspection lot to determine conformance to the other acceptance test requirements. This report shall include the purchase order number, inspection lot number, AMS4479, size or section identification number, and quantity. Th
28、is report shall also identify the producer, the product form, and the size of the mill product.4.4.1 When the product size is outside the range covered by 3.4.1, the report shall contain a statement to that effect.4.5 Resampling and RetestingShall be in accordance with AMS2355.5. PREPARATION FOR DEL
29、IVERY5.1 IdentificationShall be in accordance with ASTM B 666/B 666M.5.2 PackagingProducts 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 a
30、cceptance and safe delivery.6. ACKNOWLEDGEMENTA vendor shall mention this specification number in all quotations and when acknowledging purchase orders.SAE INTERNATIONAL AMS4479 Page 5 of 57. REJECTIONSProducts not conforming to this specification, or to modifications authorized by purchaser, will b
31、e subject to rejection.8. NOTES8.1 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 com
32、plete revision of the document, including technical revisions. Change bars and (R) are not used in original publications, nor in documents that contain editorial changes only.8.2 Extrusions produced to this specification exhibit a thin recrystallized surface layer similar to other high strength 2xxx
33、 alloys. Limits on the thickness of the recrystallized surface layer can be guaranteed for specific profiles if requested by purchaser.8.3 Terms used in AMS are clarified in ARP1917.8.4 Dimensions and properties in inch/pound units and the Fahrenheit temperatures are primary; dimensions and properti
34、es 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:AMS4479Product form and size or section identification of extrusions desiredQuantity of e
35、xtrusions desiredWhether long-transverse tensile properties are required (See 3.4.1)Ultrasonic inspection standards of extrusions when specified (See 3.5.1)Property and acceptance requirements from the cognizant engineering organization applicable to sizes outside the rangelisted in 1.1PREPARED BY AMS COMMITTEE “D”
