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 2012 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/AMS4470AAEROSPACEMATERIALSPECIFICATIONAMS4470 REV. AIssued 2009-10Revised 2012-12Superseding AMS4470Alumi
5、num Alloy, Plate (7085-T7451)7.5Zn - 1.6Cu - 1.5Mg - 0.12ZrSolution Heat Treated, Stress-Relieved, and Overaged(Composition similar to UNS A97085)RATIONALEAMS4470A adds 3.000-4.000 thickness 7085-T7451 aluminum plate to this document, modifies tensile (Table 2) and fracture toughness properties (Tab
6、le 3) for expanded gage ranges, and revises fracture toughness specimen criteria (3.3.5).1. SCOPE1.1 FormThis specification covers an aluminum alloy in the form of plate.1.2 ApplicationThis product may be used in aerospace applications requiring a high level of mechanical properties and fracture tou
7、ghness, good resistance to stress-corrosion cracking and resistance to exfoliation corrosion, 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 specifi
8、ed 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 specified, the last published issue of that document shall apply.2.1 SAE PublicationsAvailable f
9、rom SAE International, 400 Commonwealth Drive, 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 Alloys, Wrought Products, Except Forging Stock and Rolled, Forg
10、ed, or Flash Welded RingsAMS2772 Heat Treatment of Aluminum Alloy Raw MaterialAS1990 Aluminum Alloy TempersSAE AMS4470A Page 2 of 62.2 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 59
11、4 Ultrasonic Inspection of Aluminum-Alloy Wrought Products for Aerospace ApplicationsASTM B 645 Linear-Elastic Plane-Strain Fracture Toughness Testing of Aluminum AlloysASTM B 660 Packaging/Packing of Aluminum and Magnesium ProductsASTM B 666/B 666M Identification Marking of Aluminum and Magnesium P
12、roductsASTM E 399 Linear-Elastic Plane-Strain Fracture Toughness KICof Metallic MaterialsASTM 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 ANS
13、I PublicationsAvailable from American National Standards Institute, 25 West 43rd Street, New York, NY 10036, 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
14、CompositionShall conform to the percentages by weight shown in Table 1, determined in accordance with AMS2355.TABLE 1 - COMPOSITIONElement min maxSilicon - 0.06Iron - 0.08Copper 1.3 2.0Manganese - 0.04Magnesium 1.2 1.8Chromium - 0.04Zinc 7.0 8.0Titanium - 0.06Zirconium 0.08 0.15Other Elements, each
15、- 0.05Other Elements, total - 0.15Aluminum remainder3.2 ConditionHeat treatment shall be in accordance with AMS2772 to the -T7451 temper (see AS1990) and as follows: Solution heat-treatment and artificial age practices are proprietary. Material shall be stretched not less than 1-1/2% nor more than 3
16、% prior to artificial aging.SAE AMS4470A Page 3 of 63.3 PropertiesProduct shall conform to the following requirements, determined in accordance with AMS2355.3.3.1 Tensile Properties shall be as shown in Table 2A and 2B.TABLE 2A - MINIMUM TENSILE PROPERTIES, INCH/POUND UNITSNominal ThicknessInch Grai
17、n DirectionTensileStrengthksiYield Strengthat 0.2% OffsetksiElongation in2 Inches or 4D%3.000 - 4.000LLTST73.073.072.068.066.061.011844.001 - 5.000L 73.0 68.0 10LT 73.0 66.0 7ST 71.0 61.0 45.001 - 6.000L 72.0 68.0 9LT 73.0 65.0 6ST 70.0 61.0 46.001 - 7.000L 72.0 67.0 8LT 72.0 64.0 5ST 69.0 60.0 4TAB
18、LE 2B - MINIMUM TENSILE PROPERTIES, SI UNITSNominal ThicknessMillimeters Grain DirectionTensileStrengthMPaYield Strengthat 0.2% OffsetMPaElongation in50.8 mm or 4D%76.20 - 101.60LLTST5035034964694554211184101.62 - 127.00L 503 469 10LT 503 455 7ST 490 421 4127.02 - 152.40L 496 469 9LT 503 448 6ST 483
19、 421 4152.42 - 177.80L 496 462 8LT 496 441 5ST 476 414 43.3.2 Electrical ConductivityShall be not lower than 40.0% IACS (International Annealed Copper Standard) (23.2 MS/m), determined on the plate surface.3.3.3 Exfoliation Corrosion Resistance Specimens cut from plate shall not exhibit exfoliation
20、corrosion at the T/2 plane greater than that illustrated by Photograph B, Figure 2, of ASTM G 34.3.3.4 Stress Corrosion CrackingWhen specified, specimens from plate shall be tested in accordance with ASTM G 47 and shall show no evidence of stress corrosion cracking when stressed in the short transve
21、rse direction to 35 ksi (241 MPa).SAE AMS4470A Page 4 of 63.3.5 Fracture ToughnessWhen specified, plane strain fracture toughness shall be tested in accordance with ASTM E 399 and ASTM B 645. The required test orientations shall be specified by the purchaser. The test specimens shall meet the follow
22、ing requirements:3.3.5.1 For L-T and T-L test orientations of plate 3.000 to 7.000 inches (76.20 to 177.80 mm) in nominal thickness, use specimens having a width (W) of 5.0 inches (127 mm) and a thickness (B) of 2.5 inches (63.5 mm).3.3.5.2 For plate 3.000 to 5.000 inches (76.20 to 127.00 mm) in nom
23、inal thickness, the L-T and T-L specimens shall be centered at T/2.3.3.5.3 For plate 5.001 to 7.000 inches (127.02 to 177.80 mm) in nominal thickness, the L-T and T-L specimens shall be centered at T/4.3.3.5.4 For the S-L test orientation of plate 3.000 to 3.199 inches (76.20 to 81.25 mm) in nominal
24、 thickness, use specimens having a width (W) of 2.0 inches (50.8 mm) and a thickness (B) of 1.0 inches (25.4 mm).3.3.5.5 For the S-L test orientation of plate 3.200 to 3.799 inches (81.28 to 96.49 mm) in nominal thickness, use specimens having a width (W) or 2.5 inches (63.5 mm) and a thickness (B)
25、of 1.25 inches (31.7 mm).3.3.5.6 For the S-L test orientation of plate 3.800 to 5.000 inches (96.52 to 127.00 mm) in nominal thickness, use specimens having a width (W) of 3.0 inches (76.2 mm) and a thickness (B) of 1.5 inches (38.1 mm).3.3.5.7 For the S-L test orientation of plate 5.001 to 7.000 in
26、ches (127.02 to 177.80 mm) in nominal thickness, use specimens having a width (W) of 4.0 inches (101.6 mm) and a thickness (B) of 2.0 inches (50.8 mm).3.3.5.8 For plate 3.000 to 7.000 inches (76.20 to 177.80 mm) in nominal thickness, the S-L specimens shall be centered at T/2.3.3.5.9 A valid K1Cmeet
27、ing the requirements of ASTM E399, or a KQ“usable for lot release” in accordance with ASTM B 645 shall meet or exceed the values shown in Table 3A and 3B.TABLE 3A MINIMUM FRACTURE TOUGHNESS INCH/POUND UNITSThickness inch L-T direction ksig151inch T-L direction ksig151inch S-L direction ksig151inch3.
28、000 - 4.000 36 27 274.001 - 5.000 32 25 265.001 - 6.000 29 23 246.001 - 7.000 29 22 23TABLE 3B MINIMUM FRACTURE TOUGHNESS SI UNITSThickness mm L-T direction MPag151m T-L direction MPag151m S-L direction MPag151m76.20 - 101.60 40 30 30101.62 - 127.00 35 27 29127.02 - 152.40 32 25 26152.42 - 177.80 32
29、 24 253.4 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 plate. Any detrimental conditions found during the customers manufacturing process are subject to rejection.3.4.1 Each
30、 plate shall be subjected to ultrasonic inspection in accordance with ASTM B 594 and shall meet ultrasonicClass A requirements, as described in ASTM B 594.SAE AMS4470A Page 5 of 63.5 TolerancesShall conform to all applicable requirements of ANSI H35.2 or ANSI H35.2M.4. QUALITY ASSURANCE PROVISIONS4.
31、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 deemed necessary to ensure that the products conform
32、 to specified requirements.4.2 Classification of Tests4.2.1 Acceptance TestsComposition (3.1), tensile properties (3.3.1), electrical conductivity (3.3.2), tolerances (3.5), ultrasonic inspection (3.4.1), stress corrosion cracking (when specified) (3.3.4), and fracture toughness (when specified) (3.
33、3.5), are acceptance tests and, except for composition, shall be performed on each inspection lot.4.2.2 Periodic TestsExfoliation corrosion resistance (3.3.3) is a periodic test and shall be performed at a frequency selected by the vendor, unless frequency of testing is specified by purchaser.4.3 Sa
34、mpling and TestingShall be in accordance with AMS2355.4.4 ReportsThe vendor of product shall furnish with each shipment a report stating that the product conforms to the composition, tensile properties, ultrasonic inspection, tolerances, electrical conductivity, stress corrosion cracking testing (wh
35、en specified), fracture toughness (when specified), 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 product conforms to the other technical requirements. This report shall include the purc
36、hase order number, inspection lot number, AMS4470A, section identification number, mill product form, size and quantity.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 Packaging and Preserv
37、ationProducts 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 acceptance and safe delivery.SAE AMS4470A Page 6 of 66. ACKNOWLEDGMENTA vendor
38、 shall mention this specification number and its revision letter in all quotations and when acknowledging purchase orders.7. REJECTIONSProduct not conforming to this specification, or to modifications authorized by purchaser, will be subject to rejection.8. NOTES8.1 A change bar (|) located in the l
39、eft 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 complete revision of the document, including technical revision. Change
40、 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/pound units and the Fahrenheit temperatures are primary; dimensions and properties in SI units and the Celsiu
41、s 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:AMS4470ASize of plate desiredQuantity of plate desiredSpecify if stress corrosion cracking testing is requiredSpecify if fracture toughness testing is required and test orientation(s).PREPARED BY AMS COMMITTEE “D”
