1、Aluminum Alloy, Extruded Rod, Bar and Profiles (7055-T74511)8.0Zn - 2.3Cu - 2.0Mg - 0.16ZrSolution Heat Treated, Stress-Relieved, and Overaged(Composition similar to UNS A97055)RATIONALEThis document has been reaffirmed to comply with the SAE 5-year Review policy.1. SCOPE:1.1 Form: This specificatio
2、n covers an aluminum alloy in the form of extruded bars, rods, and profiles (shapes) produced with a cross sectional area of 24 square inches (155 cm2) maximum and a circumscribing circle diameter (circle size) of 10.5 inches (267 mm) maximum. See 8.3 for a definition of circumscribing circle diamet
3、er.1.2 Application: These extrusions have been used typically for machined parts requiring a combination of high mechanical properties and good resistance to exfoliation corrosion, but usage is not limited to such applications.2. APPLICABLE DOCUMENTS: The issue of the following documents in effect o
4、n 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 specific document issue is specified. When the referenced document has been cancelled and no superseding document has been specifi
5、ed, the last published issue of that document shall apply.AEROSPACE MATERIAL SPECIFICATIONAMS 4324IssuedReaffirmed2002-082010-05SAE 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 ent
6、irely voluntary, and its applicability and suitability for any particular use, including any patent infringement 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 reaffirmed, revised, or cancelled. SAE invi
7、tes your written comments and suggestions. Copyright 2010 SAE International All rights reserved. No part 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 w
8、ritten permission of SAE. TO PLACE A DOCUMENT ORDER: Tel: 877-606-7323 (inside USA and Canada) Tel: +1 724-776-4970 (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:
9、/www.sae.org/technical/standards/AMS4324 Copyright SAE International Provided by IHS under license with SAENot for ResaleNo reproduction or networking permitted without license from IHS-,-,-AMS 4324 SAE AMS 4324- 2 -2.1 SAE Publications: Available from SAE, 400 Commonwealth Drive, Warrendale, PA 150
10、96-0001, or 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 Welded RingsMAM 2355 Quality Assurance Sampling and Testing, Aluminum Alloys and Magnesium Alloys, Wrought Products, Exce
11、pt Forging Stock, and Rolled, Forged, or Flash Welded Rings, Metric (SI) UnitsAMS 2772 Heat Treatment of Aluminum Alloy Raw MaterialAS1990 Aluminum Alloy Tempers2.2 ASTM Publications: Available from ASTM, 100 Barr Harbor Drive, West Conshohocken, PA 19428-2959, or www.astm.org.ASTM B 594 Ultrasonic
12、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 ProductsASTM E 1004 Determine Electrical Conductivity using the Electromagnetic (Eddy Current) Met
13、hodASTM G 34 Exfoliation Corrosion Susceptibility in 2xxx and 7xxx Series Aluminum Alloys (EXCO Test)ASTM G 47 Determining Susceptibility to Stress-Corrosion Cracking of High-Strength Aluminum Alloy Products2.3 ANSI Publications: Available from ANSI, 25 West 43rdStreet, 4thFloor, New York, NY 10036-
14、7406.ANSI H35.2 Dimensional Tolerances for Aluminum Mill ProductsANSI H35.2M Dimensional Tolerances for Aluminum Mill Products (Metric)Copyright SAE International Provided by IHS under license with SAENot for ResaleNo reproduction or networking permitted without license from IHS-,-,-AMS 4324 SAE AMS
15、 4324- 3 -3. TECHNICAL REQUIREMENTS: 3.1 Composition: Shall conform to the percentages by weight shown in Table 1, determined in accordance with AMS 2355 or MAM 2355.3.2 Condition: Extruded, solution heat-treated and stress-relieved by stretching to produce a nominal permanent set of 1.5%, but not l
16、ess than 1% nor more than 3%, and overaged to the T74511 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 specified dimensional tolerances3.2.2 Prod
17、uct may receive minor straightening, after stretching, of an amount necessary to meet the requirements of 3.6.3.3 Heat Treatment: Extrusions shall conform to the following requirements, determined on the mill produced size, in accordance with AMS 2355 or MAM 2355 and as specified herein:3.3.1 Soluti
18、on Heat Treatment shall be in accordance with the requirements of AMS 2772.TABLE 1 - CompositionElement min maxSilicon - 0.10Iron - 0.15Copper 2.0 2.6Manganese - 0.05Magnesium 1.8 2.3Chromium - 0.04Zinc 7.6 8.4Titanium - 0.06Zirconium 0.08 0.25Other Elements, each - 0.05Other Elements, total - 0.15A
19、luminum remainderCopyright SAE International Provided by IHS under license with SAENot for ResaleNo reproduction or networking permitted without license from IHS-,-,-AMS 4324 SAE AMS 4324- 4 -3.3.2 Overaging Heat Treatment: Heat to 250 F 10 F (121 C 6 C), hold at heat for a time of 4 to 6 hours, the
20、n heat to 320 F 10 F (160 C 6 C), hold at heat for a time of 11 to 12 hours, and air cool. Alternate temperatures and times may be used provided the aged materials meet the specified requirements of 3.4.3.4 Properties: Product shall conform to the following requirements, determined in accordance wit
21、h AMS 2355 or MAM 2355 on the mill produced size.3.4.1 Longitudinal Tensile Properties shall be as shown in Table 2A and 2B.3.4.2 Longitudinal compressive yield strength, when specified, shall be as shown in Table 3A and 3B.TABLE 2A - Minimum Longitudinal Tensile Properties, Inch/Pound UnitsNominal
22、ThicknessInchesTensileStrengthksiYield Strengthat 0.2% OffsetksiElongation in2 Inches or 4D%Up to 0.249, incl 83.0 76.0 8Over 0.249 to 0.499, incl 84.0 77.0 8Over 0.499 to 3.000, incl 85.0 78.0 8TABLE 2B - Minimum Longitudinal Tensile Properties, SI UnitsNominal ThicknessMillimetersTensileStrengthMP
23、aYield Strengthat 0.2% OffsetMPaElongation in50.8 mm or 4D%Up to 6.34, incl 572 524 8Over 6.34 to 12.68, incl 579 531 8Over 12.68 to 76.20, incl 586 538 8TABLE 3A - Minimum Longitudinal Compressive Yield Strength, Inch/Pound UnitsNominal ThicknessInchesCompressiveYield StrengthksiOver 0.499 to 3.00,
24、 incl 79.0TABLE 3B - Minimum Longitudinal Compressive Yield Strength, SI UnitsNominal ThicknessMillimetersCompressiveYield StrengthMPaOver 12.68 to 76.20, incl 545Copyright SAE International Provided by IHS under license with SAENot for ResaleNo reproduction or networking permitted without license f
25、rom IHS-,-,-AMS 4324 SAE AMS 4324- 5 -3.4.3 Electrical Conductivity: Shall be not lower than 37.5% IACS (International Annealed Copper Standard) (20.9 MS/m), determined on the surface of the test coupon prior to turning.3.4.4 Exfoliation Corrosion Resistance: Specimens cut from extrusions shall not
26、exhibit exfoliation corrosion at a T/10 plane greater than that illustrated by Photograph B, Figure 2, of ASTM G 34.3.4.5 Stress Corrosion Cracking: When specified, specimens from extrusions with section thickness 0.750 inches (19.05 mm) and greater tested in accordance with ASTM G 47, shall show no
27、 evidence of stress corrosion cracking when stressed in the short transverse direction (perpendicular to grain flow) to 35 ksi (241 MPa).3.5 Quality: Products, as received by purchaser, shall be uniform in quality and condition, sound and free from foreign materials and from conditions detrimental t
28、o usage of the extrusions. Any detrimental conditions found during the customers manufacturing process are subject to rejection.3.5.1 When specified, each extrusion shall be subjected to ultrasonic inspection in accordance with ASTM B 594. Extrusions, 0.500 inch (12.7 mm) and over in nominal diamete
29、r or least distance between parallel sides, weighing 600 pounds (272 kg) and under, shall meet ultrasonic Class B requirements, as described in ASTM B 594.3.6 Tolerances: Shall conform to all applicable requirements of ANSI H35.2 or ANSI H35.2M.4. QUALITY ASSURANCE PROVISIONS: 4.1 Responsibility for
30、 Inspection: The 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 deemed necessary to ensure that the products conform to specified requ
31、irements4.2 Classification of Tests: 4.2.1 Acceptance Tests: Composition (3.1), tensile properties (3.4.1), electrical conductivity (3.4.3), tolerances (3.6), compressive yield properties, when specified, (3.4.2), and ultrasonic inspection, when specified, (3.5.1) are acceptance tests and, except fo
32、r composition, shall be performed on each inspection lot.4.2.2 Periodic Tests: Exfoliation corrosion resistance (3.4.4) and stress corrosion cracking (3.4.5) are periodic tests and shall be performed at a frequency selected by the vendor unless frequency of testing is specified by purchaser.Copyrigh
33、t SAE International Provided by IHS under license with SAENot for ResaleNo reproduction or networking permitted without license from IHS-,-,-AMS 4324 SAE AMS 4324- 6 -4.3 Sampling and Testing: Shall be in accordance with AMS 2355 or MAM 2355.4.4 Reports: The vendor of product shall furnish with each
34、 shipment a report stating that the product conforms to the chemical composition, ultrasonic inspection when required, and tolerances and showing the numerical results of tests on each inspection lot to determine conformance to the other acceptance test requirements and stating that the final produc
35、t conforms to the other technical requirements. This report shall include the purchase order number, inspection lot number, AMS 4324, section identification number, mill product form and size, quantity and the identity of the producer.4.5 Resampling and Retesting: Shall be in accordance with AMS 235
36、5 or MAM 2355.5. PREPARATION FOR DELIVERY: 5.1 Identification: Shall be in accordance with ASTM B 666/B 666M.5.2 Packaging and Preservation: Products shall be prepared for shipment in accordance with ASTM B 660 and in compliance with applicable rules and regulations pertaining to the handling, packa
37、ging, and transportation of the product to ensure carrier acceptance and safe delivery.6. ACKNOWLEDGMENT: A vendor shall mention this specification number in all quotations and when acknowledging purchase orders.7. REJECTIONS: Products not conforming to this specification, or to modifications author
38、ized by purchaser, will be subject to rejection.8. NOTES: 8.1 A change bar ( l ) 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 specification. An (R) symbol to the left of
39、the document title indicates a complete revision of the specification, including technical revisions. Change bars and (R) are not used in original publications, nor in specifications that contain editorial changes only.Copyright SAE International Provided by IHS under license with SAENot for ResaleN
40、o reproduction or networking permitted without license from IHS-,-,-AMS 4324 SAE AMS 4324- 7 -8.2 Extrusions should be visually inspected for the presence of intergranular attack (IGA). If detected, surface machining or milling is recommended to remove surface IGA which may occur during fabricating.
41、8.3 The circumscribing circle diameter is the diameter of the smallest circle, which completely encloses the cross section of the as-extruded product.8.4 Terms used in AMS are clarified in ARP1917.8.5 Dimensions and properties in inch/pound units and Fahrenheit temperatures are primary; dimensions a
42、nd properties in SI units and Celsius temperatures are shown as the approximate equivalents of the primary units and are presented only for information.8.6 Purchase documents should specify not less than the following:AMS 4324Form and size or section identification of extrusions desired.Specify if c
43、ompressive yield strength, ultrasonic, or stress corrosion cracking testing is required.Quantity of extrusions desired.8.7 Key Words: Bars, rods, profilesPREPARED UNDER THE JURISDICTION OF AMS COMMITTEE “D”Copyright SAE International Provided by IHS under license with SAENot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
