SAE AMS 4325-2003 Aluminum Alloy Extruded Wide Panel Profiles (7150-T77511) 6 4Zn - 2 4Mg - 2 2Cu - 0 12Zr Solution Heat Treated Stress-Relieved Straightened and Overaged (UNS A971.pdf

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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 there

2、from, 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 International All rights reserved. No part of this publication m

3、ay 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 (outside U

4、SA) 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:/www.sae.org/technical/standards/AMS4325 AEROSPACE MATERIAL SPECIFICATION AMS4325 Issued 2003-01 Reaffirmed 2013-05 Aluminum A

5、lloy, Extruded Wide Panel Profiles (7150-T77511) 6.4Zn - 2.4Mg - 2.2Cu - 0.12Zr Solution Heat Treated, Stress-Relieved, Straightened and Overaged (Composition similar to UNS A97150) RATIONALE AMS4325 has been reaffirmed to comply with the SAE five-year review policy. 1. SCOPE:1.1 Form: This specific

6、ation covers an aluminum alloy in the form of extruded wide panel profiles (shapes) and rod and bars produced with cross sectional area of 14 to 30 square inches (90 to 194 square cm) from circumscribing circle diameters (See 8.3) of 14 to 22 inches (356 to 559 mm).1.1.1 For product with circumscrib

7、ing circle diameters (See 8.3) 10 inches (254 mm) and under, use AMS 4345.1.2 Application: These extrusions have been used typically for structural applications requiring a combination of high tensile strength and good corrosion resistance, but usage of these extrusions is not limited to such applic

8、ations.2. APPLICABLE DOCUMENTS: The 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 ref

9、erenced document has been cancelled and no superseding document has been specified, the last published issue of that document shall apply.SAE AMS4325 Page 2 of 7 2.1 SAE Publications: Available from SAE, 400 Commonwealth Drive, Warrendale, PA 15096-0001 or www.sae.org.AMS 2355 Quality Assurance Samp

10、ling 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, Except Forging Stock, and Rolled, Forged, or Flash Welded

11、Rings, Metric (SI) UnitsAMS 2772 Heat Treatment of Aluminum Alloy Raw MaterialsAMS 4345 Aluminum Alloy Extrusions, 6.4Zn - 2.4Mg - 2.2Cu - 0.12Zr, Solution Heat Treated, Stress-Relieved, Straightened, and OveragedAS1990 Aluminum Alloy Tempers2.2 ASTM Publications: Available from ASTM, 100 Barr Harbo

12、r Drive, West Conshohocken, PA 19428-2959 or www.astm.org.ASTM B 594 Ultrasonic Inspection of Aluminum-Alloy Wrought Products for Aerospace ApplicationsASTM B 645 Plane-Strain Fracture Toughness Testing of Aluminum AlloysASTM B 660 Packaging/Packing of Aluminum and Magnesium ProductsASTM B 666/B 666

13、M Identification Marking of Aluminum and Magnesium ProductsASTM E 399 Plane-Strain Fracture Toughness of Metallic MaterialsASTM E 1004 Determining Electrical Conductivity Using the Electromagnetic (Eddy Current) MethodASTM G 34 Exfoliation Corrosion Susceptibility in 2XXX and 7XXX Series Aluminum Al

14、loys (EXCO Test)ASTM G 47 Determining Susceptibility to Stress-Corrosion Cracking of 2XXX and 7XXX Aluminum Alloy Products2.3 ANSI Publications: Available from ANSI, 25 West 43rdStreet, New York, NY 10036-8002 or www.ansi.org.ANSI H35.2 Dimensional Tolerances for Aluminum Mill ProductsANSI H35.2(M)

15、Dimensional Tolerances for Aluminum Mill Products (Metric)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.SAE AMS4325 Page 3 of 7 3.2 Condition: Solution heat treated, stress-relieved by stret

16、ching to produce a nominal permanent set of 2%, but not less than 1% or more than 3%, and overaged to the -T77511 temper (See AS1990).3.2.1 Product shall be supplied with an as-extruded surface finish; light polishing to remove minor surface imperfections is permissible provided such imperfections c

17、an be removed within specified dimensional tolerances.3.2.2 Product may receive minor straightening, after stretching, of an amount necessary to meet tolerance requirements of 3.6.3.3 Solution heat treatment shall be in accordance with the requirements of AMS 2772. Overagingshall be performed at a s

18、pecific temperature, for a time, as required to meet the requirements of 3.4 (See 8.2).3.4 Properties: Extrusions shall conform to the following requirements, determined in accordance with AMS 2355 or MAM 2355 on the mill product.3.4.1 Tensile and Compressive Yield Strength: Shall be as shown in Tab

19、le 2A and 2B.TABLE 1 - CompositionElement min maxSilicon - 0.12Iron - 0.15Copper 1.9 2.5Manganese - 0.10Magnesium 2.0 2.7Chromium - 0.04Zinc 5.9 6.9Titanium - 0.06Zirconium 0.08 0.15Other Elements, Each - 0.05Other Elements, Total - 0.15Aluminum remainderSAE AMS4325 Page 4 of 7 3.4.2 Electrical Cond

20、uctivity (EC): Shall be no lower than 36% IACS (International Annealed Copper Standard) (20.88 MS/m) in accordance with ASTM E 1004, determined on the extruded surface of the test coupon prior to turning.3.4.3 Corrosion Resistance: 3.4.3.1 Exfoliation corrosion resistance shall be determined in acco

21、rdance with ASTM G 34 and material shall not exhibit exfoliation corrosion greater than that illustrated by Photo B, Figure 2. The sample plane for testing shall be as follows:0.500-0.749 inch (12.7-19.0 mm) thickness: Test at the T/10 plane0.750 inch (19.05 mm) and greater thickness: Test at the T/

22、2 and T/10 plane.3.4.3.2 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 evidence of stress corrosion cracking when stressed in the short-transverse direction to 25 ksi

23、(172 MPa) for a minimum 20 day exposure.3.4.4 Fracture Toughness: When specified, plane-strain fracture toughness (KIC) for the thickness range 0.750 to 1.000 inches (19.05 to 25.4 mm) tested in accordance with ASTM E 399, shall be as specified in Table 3.TABLE 2A - Minimum Tensile and Compressive P

24、roperties, Inch/Pound UnitsNominalThicknessInchCircumscribingCircleDiameter, inchCrossSectionalAreaInch2SpecimenOrientationTensileStrengthksiTensile Yield Strength at 0.2% OffsetksiElongationin2 inches or 4D%CompressiveYield Strengthat 0.2% Offsetksi0.500 to1.000, incl.14 - 22 14 - 30Longitudinal 86

25、.0 80.0 8 80.0Long-Transverse84.0 79.0 - -TABLE 2B - Minimum Tensile and Compressive Properties, SI UnitsNominalThicknessmmCircumscribingCircleDiameter, mmCrossSectionalAreacm2SpecimenOrientationTensileStrengthMPaTensile Yield Strength at 0.2% OffsetMPaElongationin50.8 mm or 4D%CompressiveYield Stre

26、ngthat 0.2% OffsetMPa12.7 to 25.4,incl.356 - 559 90 - 194Longitudinal 593 552 8 552Long-Transverse579 545 - -SAE AMS4325 Page 5 of 7 3.4.4.1 If an invalid KICresult is obtained from testing to ASTM E 399, it should be interpreted according to ASTM B 645. A meaningful KQvalue as defined by ASTM B 645

27、 is acceptable when KQvalue equals or exceeds the minimum KICrequirement.3.5 Quality: The product, as received by the purchaser, shall be uniform in quality and condition, sound, and free from foreign material and from imperfections detrimental to usage of the product.3.5.1 When specified, each extr

28、uded profile (shape) shall be subjected to ultrasonic inspection in accordance with ASTM B 594. Such extrusions, with nominal thickness 0.500 to 1.0 inches (12.70 to 25.4 mm), inclusive, and weighing 600 pounds (272 kg) and under and having a maximum width-to-thickness ratio of 10:1, shall meet ultr

29、asonic Class B requirements, as described in ASTM B 594.3.6 Tolerances: Shall conform to applicable requirements of ANSI H35.2 or ANSI H35.2M.4. QUALITY ASSURANCE PROVISIONS: 4.1 Responsibility for Inspection: The vendor of extrusions shall supply all samples for vendors tests and shall be responsib

30、le 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 specified requirements.TABLE 3A - Fracture Toughness, Inch/Pound UnitsNominalThicknessInchCircle Size,InchArea,Inch2T

31、estOrientationKIC(ksig151in)0.750 to1.000, incl.14.0 - 22 14.0 - 30L-T 24T-L 20TABLE 3B - Fracture Toughness, SI UnitsNominalThickness(mm)Circle Size,(mm)Area,(cm2)TestOrientationKIC(MPag151m)19.1 to25.4, incl.356 - 559 90 - 194L-T 26T-L 22SAE AMS4325 Page 6 of 7 4.2 Classification of Tests: 4.2.1 A

32、cceptance Tests: Composition (3.1), longitudinal and long-transverse tensile testing (3.4.1), electrical conductivity (3.4.2), exfoliation-corrosion resistance (3.4.3.1), stress-corrosion cracking (when specified) (3.4.3.2), fracture toughness (when specified) (3.4.4), ultrasonic inspection (when sp

33、ecified) (3.5.1), and tolerances (3.6) are acceptance tests and, except for composition, shall be performed on each lot.4.2.2 Periodic Tests: Compressive yield (3.4.1), is a periodic test and shall be performed at a frequency selected by the vendor unless frequency of testing is specified by the pur

34、chaser.4.3 Sampling and Testing: Shall be in accordance with AMS 2355 or MAM 2355.4.4 Reports: The vendor of extrusions shall furnish with each shipment a report stating that the extrusions conform to the chemical composition, ultrasonic inspection (when specified), and tolerances and showing the nu

35、merical results of tests on each inspection lot to determine conformance to the other acceptance test requirements. This certified report shall include the purchase order number, inspection lot number, AMS 4325, size or section identification number, and quantity. The report shall include identity o

36、f the producer and the size of the mill product.4.5 Resampling and Retesting: Shall be in accordance with AMS 2355 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: 5.2.1 Product shall be protected from damage d

37、uring storage and shipment by a method determined by vendor unless specified by purchaser. Examples of typical protective methods are, but are not limited to, interleaving with paper or oiling of the surface.5.2.2 Extrusions shall be prepared for shipment in accordance with ASTM B 660 and in complia

38、nce with applicable rules and regulations pertaining to the handling, packaging, and transportation of the product to ensure carrier acceptance and safety.SAE AMS4325 Page 7 of 7 6. ACKNOWLEDGMENT: A vendor shall mention this specification number in all quotations and when acknowledging purchase ord

39、ers.7. REJECTIONS: Extrusions not conforming to this specification, or to modifications authorized by purchaser, will be subject to rejection.8. NOTES: 8.1 A change bar (|) located in the left margin is for the convenience of the user in locating areas where technical revisions, not editorial change

40、s, have been made to the previous issue of a specification. An (R) symbol to the left of the document title indicates a complete revision of the specification, including technical revision. Change bars and (R) are not used in original publications, nor in specifications that contain editorial change

41、s only.8.2 Actual overaging heat treatments are proprietary.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 Extrusion should be visually inspected for the presence of intergranular attack (IGA).

42、If detected, surface machining or milling is recommended to remove surface IGA which may occur during fabricating.8.5 Terms used in AMS are clarified in ARP 1917.8.6 Dimensions and properties in inch/pound units are primary; dimensions and properties in SI units are shown as the approximate equivale

43、nts of the primary units and are presented only for information.8.7 Purchase documents should specify not less than the following:AMS 4325Form and size or section identification number of extrusions desiredQuantity of extrusions desiredSpecify if stress corrosion cracking testing is requiredSpecify if fracture toughness testing is requiredSpecify if ultrasonic inspection is required.8.8 Key Words: Extrusions, wide panel profiles, (7150-T77511)PREPARED UNDER THE JURISDICTION OF AMS COMMITTEE “D”