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 reaffirmed, revised, or cancelled. SAE invites your written comments and suggestions.Copyright 2013 SAE InternationalAll rights reserved. No part of this publication may b
3、e 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 USA)Fax
4、: 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/AMS4478AEROSPACEMATERIALSPECIFICATIONAMS4478Issued 2013-07Aluminum Alloy, Sheet and Plate, Alclad4.4Cu -
5、1.5Mg - 0.60Mn (Alclad 2024, -T81 Sheet, -T851 Plate)Solution Heat Treated, Cold Worked and Artificially Aged(Composition similar to UNS A82024)RATIONALEAMS4478 is a new specification for Alclad 2024-T81/-T851 sheet and plate to facilitate stabilization of AMS-QQ-A-250/5.1. SCOPE1.1 FormThis specifi
6、cation covers an aluminum alloy in the form of Alclad sheet and plate supplied in the T81/-T851 temper.1.2 ApplicationThese products have been used typically for high strength parts requiring higher yield strength than is afforded by naturallyaged tempers of this alloy and maximum corrosion resistan
7、ce and whose fabrication does not involve welding, but usage is not limited to such applications.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 supplied herein. The supplier may work to a subseq
8、uent 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 PublicationsAvailable from SAE International, 400 Commonwealth Driv
9、e, 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, Wrought Products (Except Forging Stock), and Rolled, Forged, or Flash Welded RingsAMS2772 Heat Trea
10、tment of Aluminum Alloy Raw MaterialsAS1990 Aluminum Alloy TempersSAE AMS4478 Page 2 of 52.2 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
11、Products for Aerospace ApplicationsASTM B 660 Packaging/Packing of Aluminum and Magnesium ProductsASTM B 666/B 666M Identification of Aluminum and Magnesium Alloy Products2.3 ANSI PublicationsAvailable from American National Standards Institute, 25 West 43rd Street, New York, NY 10036, Tel: 212-642-
12、4900, www.ansi.org.ANSI H 35.2 Dimensional Tolerances for Aluminum Mill ProductsANSI H 35.2M Dimensional Tolerances for Aluminum Mill Products (Metric)3. TECHNICAL REQUIREMENTS3.1 CompositionShall conform to the percentages by weight as shown in Tables 1 and 2, determined in accordance with AMS2355.
13、TABLE 1 COMPOSITION, CORE (2024)Element min maxSilicon - 0.50Iron - 0.50Copper 3.8 4.9Manganese .30 0.9Magnesium 1.2 1.8Chromium - 0.10Zinc - 0.25Titanium - 0.15Other Elements, each - 0.05Other Elements, total - 0.15Aluminum remainderTABLE 2 COMPOSITION, CLADDING (1230)Element min maxIron + Silicon
14、- 0.70Copper - 0.10Manganese - 0.05Magnesium - 0.05Zinc - 0.10Titanium - 0.03Other Elements, each - 0.03Aluminum 99.30 -3.2 ConditionThe product shall be supplied in the following condition:SAE AMS4478 Page 3 of 53.2.1 SheetSolution heat treated, cold worked and artificially aged to the T81 temper i
15、n accordance with AMS2772. (See AS1990).3.2.2 PlateSolution heat treated, stretched to produce a nominal permanent set of 2% but not less than 1-1/2% nor more than 3%, and artificially aged to the T851 temper in accordance with AMS2772 (See AS1990).3.2.2.1 Plate shall receive no further straightenin
16、g operations after stretching.3.3 PropertiesThe product shall conform to the following requirements, determined in accordance with AMS2355 on the mill producedsize.3.3.1 Tensile PropertiesShall be as shown in Table 3 (See 8.3).TABLE 3A MINIMUM TENSILE PROPERTIES, INCH/POUND UNITSTemperNominal Thickn
17、ess,InchesTensile Strength,ksiYield Strength at 0.2% Offset, ksiElongation in 2 inches or 4D, %-T810.010 thru 0.0620.063 thru 0.24962.065.054.056.055-T8510.250 thru 0.4990.500 thru 1.00065.066.056.058.055TABLE 3B MINIMUM TENSILE PROPERTIES, SI UNITSTemperNominal Thickness,MillimetersTensile Strength
18、,MPAYield Strength at 0.2% Offset, MPAElongation in 50.8 mm or 4D, %-T810.254 thru 1.571.60 thru 6.3242744837238655-T8516.33 thru 12.6712.70 thru 25.40448455386400553.4 Cladding Thickness3.4.1 Thickness of Cladding PlatesThe aluminum alloy plates that are bonded to the two sides of the aluminum allo
19、y (2024) ingot or slab, to form a composite that is to be rolled, shall each have a thickness as specified in Table 4.SAE AMS4478 Page 4 of 5TABLE 4 CLADDING THICKNESSNominal Thickness,InchNominal Thickness,mmNominal CladdingThickness Per Side,% Of ThicknessAverage CladdingThickness Per Side,% Of Th
20、ickness;Minimum0.010 thru 0.062 0.25 thru 1.57 5 4Over 0.062 Over 1.57 2.5 23.5 QualityThe 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 Ultrasonic Inspection3.6.1 Wh
21、en specified, each plate 0.500 inch (12.70 mm) and over in nominal thickness shall be ultrasonically inspected in accordance with ASTM B 594, Class B requirements.3.7 TolerancesShall conform to all applicable requirements of ANSI H35.2/H35.2M.4. QUALITY ASSURANCE PROVISIONS4.1 Responsibility for Ins
22、pectionThe 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 product conforms to specified requirement
23、s.4.2 Classification of Tests4.2.1 Acceptance TestsComposition (3.1), tensile properties (3.3.1), and tolerances (3.8) and, when specified, ultrasonic soundness (3.5.1) are acceptance tests and except for composition, shall be performed on each lot.4.2.2 Periodic TestsCladding thickness (3.4.1) is a
24、 periodic test and shall be performed at a frequency selected by the vendor unless frequency of testing is specified by purchaser.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 confor
25、ms to the composition and tolerances, and showing numerical results of tests for the other acceptance test requirements. This report shall include the purchase order number, lot number, AMS4478, size, and quantity. The report shall also identify the producer, the product form, and the size of the mi
26、ll product.SAE AMS4478 Page 5 of 54.5 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 Packaging5.2.1 Product shall be protected from damage during storage and shipment by a method determined by
27、 the vendor unless specified by purchaser. Examples of typical protective methods include but are not limited to interleaving with paper or oiling of the surface.5.2.2 The product shall be prepared for shipment in accordance with ASTM B 660 and in compliance with applicable rules and regulations per
28、taining to the handling, packaging, and transportation of the product to ensure carrier acceptance and safe delivery.6. ACKNOWLEDGMENTA vendor shall mention this specification number in all quotations and when acknowledging purchase orders.7. REJECTIONSProduct not conforming to this specification, o
29、r to modifications authorized by purchaser, will be 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
30、 to the left of the 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 only.8.2 Terms used in AMS are clarified in ARP1917.8.3 Dimensions and properties in inch
31、/pound units and Fahrenheit temperatures are primary; dimensions and properties in SI units and Celsius temperatures are shown as the approximate equivalents of the primary units and are presented only for information.8.4 The tensile properties in Tables 3 and 5 were taken directly from QQ-A-250/5F Amendment 2 (AMS-QQ-A-250/5A) and have not been independently verified by AMS statistical procedures.8.5 Purchase documents should specify not less than the following:AMS4478Product form and size of product desiredQuantity of product desired.PREPARED BY AMS COMMITTEE “D“
