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/AMS4232CAEROSPACEMATERIALSPECIFICATIONAMS4232 REV. CIssued 1990-01Revised 2012-10Superseding AMS4232BAlum
5、inum Alloy Extrusions2.7Cu - 2.2Li - 0.12Zr (2090-T86)Solution Heat Treated, Cold Worked, and Precipitation Heat Treated(Composition similar to UNS A92090)RATIONALEAMS4232C restores this document to active status at user request.1. SCOPE1.1 FormThis specification covers an aluminum alloy in the form
6、 of extruded bars, rods, and profiles.1.2 ApplicationThese extrusions have been used typically for parts in structural applications requiring strength similar to 7050-T6 alloy with good exfoliation resistance and with a lower density of approximately 7.8%, but usage is not limited to such applicatio
7、ns.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 specific document issue is specified. When the reference
8、d document has been canceled 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 Drive, Warrendale, PA 15096-0001, Tel: 877-606-7323 (inside USA and Canada) or 724-776-4970 (outsi
9、de USA), www.sae.org.AMS2355 Quality Assurance Sampling and Testing, Aluminum Alloys and Magnesium Alloys, Wrought Products, Except Forging Stock, and Rolled, Forged, or Flash Welded RingsAMS2750 PyrometrySAE AMS4232C Page 2 of 52.2 ASTM PublicationsAvailable from ASTM International, 100 Barr Harbor
10、 Drive, P.O. Boc C700, West Conshohocken, PA 19428-2959,Tel: 610-832-9585, 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 an
11、d Magnesium ProductsASTM G 34-72 Exfoliation Corrosion Susceptibility in 2XXX and 7XXX Series Aluminum Alloys (EXCO Test)ASTM G 38 Making and Using C-Ring Stress Corrosion Test SpecimensASTM G 44 Exposure of Metals and Alloys by Alternate Immersion in Neutral 3.5% Sodium Chloride SolutionASTM G 85 M
12、odified Salt Spray (Fog) Testing2.3 ANSI PublicationsAvailable from American National Standards 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 Pro
13、ducts (Metric)3. TECHNICAL REQUIREMENTS3.1 CompositionShall conform to the percentages by weight shown in Table 1, determined in accordance with AMS2355 or by other analytical methods acceptable to purchaser.TABLE 1 - COMPOSITIONElement min maxSilicon - 0.10Iron - 0.12Copper 2.4 3.0Manganese - 0.05M
14、agnesium - 0.25Chromium - 0.05Zinc - 0.10Titanium - 0.15Lithium 1.9 2.6Zirconium 0.08 0.15Other Elements, each - 0.05Other Elements, total - 0.15Aluminum remainderSAE AMS4232C Page 3 of 53.2 ConditionSolution heat treated, cold worked, and precipitation heat treated to the -T86 temper (See 8.2).3.2.
15、1 Product shall be furnished with an as-extruded surface finish. Light polishing to remove minor surface imperfections is permissible provided such imperfections can be removed within the dimensional tolerances.3.3 Heat TreatmentPyrometry shall be in accordance with AMS2750 (See 8.2).3.4 PropertiesE
16、xtrusions, 0.499 inch (12.67 mm) and under in nominal diameter or least thickness and under 10 square inches (65 cm2)in cross-sectional area, shall conform to the following requirements, determined on the mill product in accordance with AMS2355 and as specified in 3.4.1, 3.4.2, and 3.4.3.3.4.1 Tensi
17、le PropertiesShall be as specified in Table 2. TABLE 2A - MINIMUM TENSILE PROPERTIES, INCH/POUND UNITSNominal Diameteror Least ThicknessInchSpecimenOrientationTensileStrengthksiYield Strengthat 0.2% OffsetksiElongation in2 Inches or 4D%Up to 0.124, incl Longitudinal 77 71 4Over 0.124 to 0.249, incl
18、Longitudinal 77 72 4Over 0.249 to 0.499, incl LongitudinalLong-Trans.7875727053TABLE 2B - MINIMUM TENSILE PROPERTIES, SI UNITSNominal Diameteror Least ThicknessMillimetersSpecimenOrientationTensileStrengthMPaYield Strengthat 0.2% OffsetMPaElongation in50.8 mm or 4D%Up to 3.15, incl Longitudinal 531
19、490 4Over 3.15 to 6.32, incl Longitudinal 531 496 4Over 6.32 to 12.67, incl LongitudinalLong-Trans.538517496483533.4.2 Longitudinal Compressive Yield StrengthShall be as shown in Table 3.TABLE 3 - MINIMUM TENSILE PROPERTIESNominal Diameteror Least ThicknessInchNominal Diameteror Least ThicknessMilli
20、metersLongitudinal CompressiveYield Strength0.200 to 0.249, incl 5.08 to 6.32, incl 70.0 ksi (483 MPa)Over 0.249 to 0.499, incl Over 6.32 to 12.67, incl 73.0 ksi (503 MPa)SAE AMS4232C Page 4 of 53.4.3 Exfoliation ResistanceProduct shall exhibit exfoliation corrosion not greater than Level B, Photo 2
21、 of ASTM G 34-72 when exposed for two weeks in accordance with ASTM G 85, Annex A2. Exposure shall be on the T/10 plane for thicknesses under 0.100 inch (2.54 mm) and T/2 for thicknesses 0.100 inch (2.54 mm) and over.3.5 QualityExtrusions, as received by purchaser, shall be uniform in quality and co
22、ndition, sound, and free from foreign materials and from imperfections detrimental to usage of the extrusions.3.6 TolerancesShall conform to all applicable requirements of ANSI H35.2 or ANSI H35.2M.4. QUALITY ASSURANCE PROVISIONS4.1 Responsibility for InspectionThe vendor of extrusions shall supply
23、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 the specified requirements.4.2 Classification of TestsAll technic
24、al requirements, except heat treatment, are acceptance tests and, except for composition, shall be performed on each lot.4.3 Sampling and TestingShall be in accordance with AMS2355 and the following:4.3.1 For Tensile PropertiesFrom extrusions having a nominal weight under 1 pound per linear foot (1.
25、5 kg/m), one tensile specimen shall be selected from each lot weighing 1,000 pounds (454 kg) or less; from lots weighing more than 1,000 pounds (454 kg) one additional specimen shall be taken from each 1,000 pounds (454 kg) or each fraction thereof in excess of the first 1,000 pounds (454 kg). From
26、extrusions having a nominal weight of 1 pound per linear foot (1.5 kg/m) or over, one tensile specimen shall be taken from each lot consisting of 1,000 feet (305 m) or less; from lots consisting of more than 1,000 feet (305 m), one additional specimen shall be taken for each 1,000 feet (305 m) or fr
27、action thereof in excess of the first 1,000 feet (305 m). Only one specimen shall be taken from any one piece when only one piece is available.4.4 ReportsThe vendor of extrusions shall furnish with each shipment a report stating that the extrusions conform to the chemical composition, tolerances and
28、 the 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(s), AMS4232C,size, and quantity. The report shall also identify the producer, the product form, and th
29、e size of the mill product.4.5 Resampling and RetestingShall be in accordance with AMS2355.SAE AMS4232C Page 5 of 55. PREPARATION FOR DELIVERY5.1 IdentificationShall be in accordance with ASTM B 666/B 666M except that green marking ink shall be used.5.2 PackagingExtrusions shall be prepared for ship
30、ment in accordance with 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 and its revision let
31、ter in all quotations and when acknowledging 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 (|) located in the left margin is for the convenience of the user in locating
32、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 revisions. Change bars and (R) are not used in original publications, nor
33、in documents that contain editorial changes only.8.2 The heat treatment of this alloy is proprietary.8.3 Dimensions and properties in inch/pound units are primary; dimensions and properties in SI units are shown as the approximate equivalents of the primary units and are presented only for information.8.4 Terms used in AMS are clarified in ARP1917.8.5 Purchase documents should specify not less than the following:AMS4232CForm and size or section identification number of extrusions desiredQuantity of extrusions desired.PREPARED BY AMS COMMITTEE “D”
