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 theref
2、rom, 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 2013 SAE InternationalAll rights reserved. No part of this publi
3、cation 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: +1 724-776-4970 (out
4、side 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/AMS4476AEROSPACE MATERIAL SPECIFICATIONAMS4476Issued 2013-11Aluminum Alloy, Extrusions5.6Zn -
5、 2.5Mg - 1.6Cu - 0.23Cr (7075-O)Annealed(Composition similar to UNS A97075)RATIONALEAMS4476 is a new document for 7075-O extrusions to allow for the eventual stabilization of AMS-QQ-A-200/11.1. SCOPE1.1 FormThis specification covers an aluminum alloy in the form of extruded bars, rods, wire, profile
6、s, and tubing.1.1.1 Tubing shall be additionally classified as follows:Type DescriptionI Tubing extruded from hollow billets using die and mandrelII Tubing extruded from solid billets using porthole or spider die or similar toolingWhen no Type is specified, Type I shall apply.1.2 ApplicationThese pr
7、oducts have been used typically for parts requiring high strength and whose fabrication does not involve welding or forming, but usage is not limited to such applications. 1.2.1 Certain design and processing procedures may cause these extrusions to become susceptible to stress-corrosion cracking; AR
8、P823 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 document unless a speci
9、fic 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.SAE INTERNATIONAL AMS4476 Page 2 of 52.1 SAE PublicationsAvailable from SAE International, 400 Commonwealth Drive, Wa
10、rrendale, 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, Wrought Products(Except Forging Stock), and Rolled, Forged, or Flash Welded RingsAMS2772 Heat Treatment
11、of Aluminum Alloy Raw MaterialsARP823 Minimizing Stress-Corrosion Cracking in Wrought Heat-Treatable Aluminum Alloy ProductsAS1990 Aluminum Alloy Tempers2.2 ASTM PublicationsAvailable from ASTM International, 100 Barr Harbor Drive, P.O. Box C700, West Conshohocken, PA 19428-2959, Tel: 610-832-9585,
12、www.astm.org.ASTM B 594 Ultrasonic Inspection of Aluminum-Alloy Wrought Products for Aerospace ApplicationsASTM B 660 Packaging/Packing of Aluminum and Magnesium ProductsASTM B 666/B 666M Identification Marking of Aluminum and Magnesium Products2.3 ANSI PublicationsAvailable from American National S
13、tandards Institute, 25 West 43rd Street, New York, NY 10036-8002, Tel: 212-642-4900,www.ansi.org.ANSI H35.2 Dimensional Tolerances for Aluminum Mill ProductsANSI H35.2M Dimensional Tolerances for Aluminum Mill Products (Metric)3. TECHNICAL REQUIREMENTS3.1 CompositionShall conform to the percentages
14、by weight shown in Table 1, determined in accordance with AMS2355.TABLE 1 - COMPOSITIONElement min maxSilicon - 0.40Iron - 0.50Copper 1.2 2.0Manganese - 0.30Magnesium 2.1 2.9Chromium 0.18 0.28Zinc 5.1 6.1Titanium - 0.20Other Elements, each - 0.05Other Elements, total - 0.15Aluminum remainder3.2 Cond
15、itionExtruded and annealed in accordance with AMS2772 to the O temper (See AS1990).SAE INTERNATIONAL AMS4476 Page 3 of 53.2.1 Extrusions shall be supplied with the as-extruded surface finish; light polishing to remove minor surface imperfections is permissible provided such imperfections can be remo
16、ved within specified dimensional tolerances.3.3 PropertiesExtrusions shall conform to the following requirements, determined on the mill produced size in accordance with AMS2355.3.3.1 As Annealed3.3.1.1 Tensile Properties: Shall be as shown in Table 2.TABLE 2 -TENSILE PROPERTIESProperty ValueTensile
17、 Strength, max 40.0 ksi (276 MPa)Yield Strength at 0.2% Offset, max 24.0 ksi (165 MPa)Elongation in 2 Inches (50.8 mm) or 4D, min 10%Note: Properties shown were taken directly from AMS-QQ-A-200/11 and have not been substantiated using SAE AMS statistical procedures.3.3.2 Response to Heat Treatment3.
18、3.2.1 After Heat Treatment to the T62 TemperExtrusions, as received by purchaser in the Annealed (O) or As Fabricated (F) condition, shall have the properties of Table 3, after solution heat treatment and artificial aging to the T62 temper (see AS1990) in accordance with AMS2772.3.3.2.2 Tensile Prop
19、ertiesShall be as shown in Table 3.TABLE 3A - MINIMUM LONGITUDINAL TENSILE PROPERTIES, INCH/POUND UNITSNominal Diameter orLeast Thickness(bars, rods, wire, profiles) orNominal Wall Thickness(tubing)InchesNominal Cross-Sectional AreaSquare InchesTensileStrengthksiYield Strengthat 0.2% OffsetksiElonga
20、tion in2 Inches or 4D%Up to 0.249, incl All 78.0 70.0 7Over 0.249 to 0.499, incl All 81.0 73.0 7Over 0.499 to 2.999, incl All 81.0 72.0 7Over 2.999 to 4.499, incl Up to 20, incl 81.0 71.0 7Over 2.999 to 4.499, incl Over 20 to 32, incl 78.0 70.0 6Over 4.499 to 5.000, incl Up to 32, incl 78.0 68.0 6No
21、te: Properties shown were taken directly from AMS-QQ-A-200/11 and have not been substantiatedusing SAE AMS statistical procedures.SAE INTERNATIONAL AMS4476 Page 4 of 5TABLE 3B - MINIMUM LONGITUDINAL TENSILE PROPERTIES, SI UNITSNominal Diameter orLeast Thickness(bars, rods, wire, profiles) orNominal
22、Wall Thickness(tubing)MillimetersNominal Cross-Sectional AreaSquare CentimetersTensileStrengthMPaYield Strengthat 0.2% OffsetMPaElongation in50.8 mm or 4D%Up to 6.32, incl All 538 483 7Over 6.32 to 12.67, incl All 558 503 7Over 12.67 to 76.17, incl All 558 496 7Over 76.17 to 114.27, incl Up to 129,
23、incl 558 490 7Over 76.17 to 114.27, incl Over 129 to 206, incl 538 483 6Over 114.27 to 127.00, incl Up to 206, incl 538 469 6Note: Properties shown were taken directly from AMS-QQ-A-200/11 and have not been substantiated using SAE AMS statistical procedures.3.4 QualityExtrusions, as received by purc
24、haser, shall be uniform in quality and condition, sound, and free from foreign materials and from imperfections detrimental to usage of the extrusions. Discoloration due to thermal treatment shall not be cause for rejection.3.4.1 When specified, extrusions shall be subjected to ultrasonic inspection
25、 in accordance with ASTM B 594 and shall meet the following requirements.3.4.1.1 Extrusions, with nominal thickness of 0.500 to 1.499 inches (12.70 to 38.07 mm), not exceeding 600 pounds (272 kg) per piece, or a 10 to 1 width-to-thickness ratio, shall meet ultrasonic Class B.3.4.1.2 Extrusions, with
26、 nominal thickness 1.500 inches (38.07 mm) and over, not exceeding 600 pounds (272 kg) perpiece, or a 10 to 1 width-to-thickness ratio, shall meet ultrasonic Class A.3.5 TolerancesShall conform to all applicable requirements of ANSI H35.2 or ANSI H35.2M.4. QUALITY ASSURANCE PROVISIONS4.1 Responsibil
27、ity for InspectionThe vendor of extrusions 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 extrusions conform to specified
28、 requirements.4.2 Classification of Tests4.2.1 Acceptance TestsComposition (3.1), tensile properties as annealed (3.3.1.1), tensile properties after solution and precipitation heat treatment (3.3.2.1), ultrasonic inspection when specified (3.4.1), and tolerances (3.5) are acceptance tests and, excep
29、t for composition, shall be performed on each inspection lot.4.3 Sampling and TestingShall be in accordance with AMS2355.SAE INTERNATIONAL AMS4476 Page 5 of 54.4 ReportsThe vendor of product shall furnish with each shipment a report stating that the product conforms to the composition and tolerances
30、 and showing 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, AMS4476, size or section identification number, extrusion type, and quantity. The report shal
31、l also identify the producer, the product form, and the mill produced size.4.5 Resampling and RetestingShall be in accordance with AMS2355.5. PREPARATION FOR DELIVERY5.1 IdentificationShall be in accordance with ASTM B 666/B 666M.5.2 PackagingExtrusions shall be prepared for shipment in accordance w
32、ith ASTM B 660 and in compliance with applicable rules and regulations pertaining to the handling, packaging, and transportation of the extrusions to ensure carrier acceptance and safe delivery.6. ACKNOWLEDGMENTA vendor shall mention this specification number in all quotations and when acknowledging
33、 purchase orders.7. REJECTIONSExtrusions not conforming to this specification, or to modifications authorized by purchaser, will be subject to rejection.8. NOTES8.1 A change bar (l) located in the left margin is for the convenience of the user in locating areas where technical revisions, not editori
34、al 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 changes
35、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 f
36、or information.8.4 Purchase documents should specify not less than the following:AMS4476Product form and size or section identification number of extrusions desiredQuantity of extrusions desired.8.5 Similar SpecificationsAMS QQ-A-200/11, Temper O, is listed for information only and shall not be construed as an acceptable alternate unless all requirements of this AMS are met.PREPARED BY AMS COMMITTEE “D“
