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 2016 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/AMS4458AAEROSPACEMATERIAL SPECIFICATIONAMS4458 REV. AIssued 2010-05Revised 2016-02Superseding
5、 AMS4458Aluminum Alloy, Plate (2.7 Cu - 1.8 Li - 0.7 Zn) 2099-T86Solution Heat Treated, Cold Worked and Artificially Aged(Composition similar to UNS A92099)RATIONALEAMS4458A revises Properties (3.3.2, 3.3.5) and Reports (4.4.1), and is a Five Year Review and update of this specification.1. SCOPE 1.1
6、 Form This specification covers an aluminum alloy in the form of plate 0.500 to 2.000 inch, incl (12.70 to 50.80 mm, incl) in thickness (see 8.5).1.2 ApplicationThis plate has been used typically for parts requiring strength similar to that of 7050-T7451, good resistance to stress-corrosion cracking
7、, and having 7.1% lower nominal density than that alloy, 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 specified herein. The supplier may work to a
8、 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 Publications Available from SAE International, 400 Commonwea
9、lth Drive, Warrendale, PA 15096-0001, Tel: 877-606-7323 (inside USA and Canada) or +1 724-776-4970 (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 RingsAMS277
10、2 Heat Treatment of Aluminum Alloy Raw MaterialsARP1917 Clarification of Terms Used in Aerospace Metals SpecificationsAS1990 Aluminum Alloy TempersSAE INTERNATIONAL AMS4458A Page 2 of 62.2 ASTM PublicationsAvailable from ASTM International, 100 Barr Harbor Drive, P.O. Box C700, West Conshohocken, PA
11、 19428-2959, Tel: 610-832-9585, www.astm.org.ASTM B645 Linear-Elastic Plane-Strain Fracture Toughness Testing of Aluminum AlloysASTM B594 Ultrasonic Inspection of Aluminum-Alloy Products for Aerospace ApplicationsASTM B660 Packing/Packaging of Aluminum and Magnesium ProductsASTM B666/B666M Identific
12、ation Marking of Aluminum and Magnesium ProductsASTM E399 Linear-Elastic Plane-Strain Fracture Toughness KIC of Metallic MaterialsASTM G34 Exfoliation Corrosion Susceptibility in 2XXX and 7XXX Series Aluminum Alloys (EXCO Test)ASTM G47 Determining Susceptibility to Stress-Corrosion Cracking of 2XXX
13、and 7XXX Aluminum Alloy ProductsASTM G85 Modified Salt Spray (Fog) Testing2.3 ANSI Accredited PublicationsCopies of these documents are available online at http:/webstore.ansi.org/.ANSI H35.2 Dimensional Tolerances for Aluminum Mill ProductsANSI H35.2M Dimensional Tolerances for Aluminum Mill Produc
14、ts (Metric)3. TECHNICAL REQUIREMENTS3.1 CompositionShall conform to the percentages by weight shown in Table 1, determined in accordance with AMS2355.Table 1 - CompositionElement Min MaxSilicon 0.05Iron 0.07Copper 2.4 3.0Manganese 0.10 0.50Magnesium 0.10 0.50Zinc 0.40 1.0Titanium 0.10Beryllium 0.000
15、1Lithium 1.6 2.0Zirconium 0.05 0.12Other elements each 0.05Other elements total 0.15Aluminum remainderSAE INTERNATIONAL AMS4458A Page 3 of 63.2 ConditionHeat treatment shall be in accordance with AMS2772 to the T86 temper (see AS1990) and as follows: Solution heat treated, stretched to produce a nom
16、inal permanent set of 6% and precipitation heat treated to the T86 temper (see AS1990). Solution heat treatment and artificial age practices are proprietary.3.2.1 Plate shall receive no further straightening operations after stretching.3.3 PropertiesProduct shall conform to the following requirement
17、s, determined in accordance with AMS2355.3.3.1 Tensile PropertiesShall be as specified in Table 2.Table 2A - Minimum tensile properties - inch/pound unitsNominal Thickness (Inches)SpecimenOrientationTensileStrength(ksi)YieldStrength(ksi)Elongationin 2 inchesor 4D (%)0.500 to 2.000, incl Longitudinal
18、Long Transverse71.072.063.062.065Table 2B - Minimum tensile properties, SI unitsNominal Thickness (millimeters)SpecimenOrientationTensileStrength(MPa)YieldStrength(MPa)Elongationin 50.8 mmor 4D (%)12.70 to 50.80, incl LongitudinalLong Transverse490496434427653.3.2 Exfoliation Corrosion ResistanceSpe
19、cimens shall not exhibit exfoliation corrosion at a T/10 plane greater than EB as illustrated by Figure 2 of ASTM G34,when specimens are exposed for 2 weeks according to the procedures in ASTM G85 Annex A2, using the dry-bottom MASTMAASIS Test Method. 3.3.3 Stress-Corrosion TestWhen specified, speci
20、mens from plate 0.750 inch (19.05 mm) and over in nominal thickness shall be tested in accordance with ASTM G47 shall show no evidence of stress-corrosion cracking when stressed in the short transverse direction at 50.0 ksi (345 MPa) and in the long transverse direction at 55.0 ksi (379 MPa) (see 8.
21、4).3.3.4 Fracture ToughnessWhen specified, plane strain fracture toughness shall be tested in accordance with ASTM E399 and ASTM B645. The required test orientations shall be specified by the purchaser. The test specimens shall meet the following requirements:SAE INTERNATIONAL AMS4458A Page 4 of 63.
22、3.4.1 For L-T and T-L test orientations use a test specimen having a width (W) of 3.0 inches (76 mm). For plate 1.000 to 1.500 inches (25.40 to 38.10 mm) in nominal thickness, the test specimen thickness (B) is full plate thickness. For plate 1.501 to 2.000 inches (38.13 to 50.80 mm) in nominal thic
23、kness, the test specimen thickness (B) shall be 1.5 inches (38 mm) and the specimen is centered at the mid-thickness (T/2).3.3.4.2 A valid KIC meeting the requirements of ASTM E399 or a KQ “usable for lot release” in accordance with ASTM B645 shall meet or exceed the values shown in Table 3A and 3B.
24、Table 3A - Minimum KIC or KQ “useable for lot release“ fracture toughness, inch/pound unitsNominal Thickness (Inches)L-TksiinchT-Lksiinch1.000 - 2.000 30 25Table 3B - Minimum KIC or KQ “useable for lot release“ fracture toughness, SI unitsNominal Thickness (millimeters)L-TMPamT-LMPam25.40 - 50.80 33
25、 273.3.5 Mechanical property requirements for product outside the range covered by Tables 2 and 3 shall be agreed upon between purchaser and producer.3.4 QualityPlate, as received by purchaser, shall be uniform in quality and condition, sound, and free from foreign materials and from imperfections d
26、etrimental to usage of the plate.3.4.1 When specified, each plate 0.500 inch to 2.000 inches (12.70 mm to 50.80 mm) in nominal thickness shall be ultrasonically inspected in accordance with ASTM B594 and shall meet the requirements of 3.4.1.1.3.4.1.1 Plates shall meet the requirements for ultrasonic
27、 class A for plate 0.500 to 2.000 inches (12.70 to 50.80 mm) in nominal thickness.3.5 TolerancesShall conform to all applicable requirements of ANSI H35.2 or H35.2M.4. QUALITY ASSURANCE PROVISIONS4.1 Responsibility for InspectionThe vendor of plate shall supply all samples for vendors tests and shal
28、l 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 plate conforms to the specified requirements.4.2 Classification of Tests4.2.1 Acceptance TestsComposition (3.1), tensile prop
29、erties (3.3.1), tolerances (3.5), and, when specified, fracture toughness (3.3.4), and ultrasonic soundness (3.4.1) are acceptance tests and except for composition, shall be performed on each lot.4.2.2 Periodic TestsExfoliation corrosion resistance (3.3.2) and stress-corrosion resistance (3.3.3) are
30、 periodic tests and shall be performed at a frequency selected by the vendor unless frequency of testing is specified by purchaser.SAE INTERNATIONAL AMS4458A Page 5 of 64.3 Sampling and TestingShall be in accordance with AMS2355 and the following:4.3.1 Tensile specimens shall be taken with axis of s
31、pecimens parallel to each applicable grain flow direction specified in Table 2.4.3.2 When fracture toughness testing is specified, specimens shall be taken from the center width of at least one plate in each lot for each specimen orientation specified by purchaser.4.4 ReportsThe vendor of plate shal
32、l furnish with each shipment a report stating that the plate conforms to the composition, tolerances and, when specified, ultrasonic inspection and showing the numerical results of tests on each inspection lot to determine conformance to the other acceptance test requirements. This report shall incl
33、ude the purchase order number, inspection lot number(s), AMS4458A, size, and quantity. The 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 1.1, the report shall contain a statement to that effect.
34、4.5 Resampling and RetestingShall be in accordance with AMS2355.5. PREPARATION FOR DELIVERY5.1 IdentificationShall be in accordance with ASTM B666/B666M.5.2 Protective TreatmentProduct shall be protected from damage during storage and shipment by a method determined by vendor unless specified by pur
35、chaser. Examples of typical protective methods include but are not limited to interleaving with paper or oiling of the surfaces.5.3 PackagingPlate shall be prepared for shipment in accordance with ASTM B660 and in compliance with applicable rules and regulations pertaining to the handling, packaging
36、, and transportation of the plate to ensure carrier acceptance and safe delivery.6. ACKNOWLEDGMENTA vendor shall mention this specification number in all quotations and when acknowledging orders.7. REJECTIONSPlate not conforming to this specification, or to modifications authorized by purchaser, wil
37、l be subject to rejection.8. NOTES8.1 Revision IndicatorA 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 document. An (R) symbol to the left of the document
38、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.SAE INTERNATIONAL AMS4458A Page 6 of 68.2 Terms used in AMS are clarified in ARP1917.8.3 Dimensions and
39、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 for information.8.4 This product can exhibit elongated pitting when stre
40、ssed in the ST direction during SCC testing. Although the pitting appearance could be mistaken for cracking in SCC test specimens, metallographic analyses, as provided in ASTM G47, may be used to verify the absence of SCC cracking in SCC specimens. The pitting behavior has been determined to be inde
41、pendent of applied stress.8.5 Purchase documents should specify not less than the following:AMS4458ASize of plate desiredQuantity of plate desiredFracture toughness testing (if required) and specimen orientation (see 3.3.4)Ultrasonic inspection (if required) (see 3.4.1).Property and acceptance requirements from the cognizant engineering organization applicable to sizes outside the ranges shown in Tables 2 and 3.PREPARED BY AMS COMMITTEE “D”
