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 revised, reaffirmed, stabilized, or cancelled. SAE invites your written comments and suggestions. Copyright 2011 SAE International All rights reserved. No part of this p
3、ublication 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: +1 724-776-497
4、0 (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:/www.sae.org/technical/standards/AMS4340E AEROSPACE MATERIAL SPECIFICATION AMS 4340 REV. E Issued 1997-01 Revised
5、2006-09 Reaffirmed 2011-11 Superseding AMS 4340D Aluminum Alloy, Extrusions 6.2Zn - 2.3Cu - 2.2Mg - 0.12Zr (7050-T76511) Solution Heat Treated, Stress Relieved, Straightened, and Overaged (Composition similar to UNS A97050) RATIONALE This document has been reaffirmed to comply with the SAE five-year
6、 review policy. 1. SCOPE 1.1 Form This specification covers an aluminum alloy in the form of extruded bars, rods, wire, profiles, and tubing. 1.2 Application These products have been used typically for structural applications requiring high tensile properties and good exfoliation corrosion resistanc
7、e, but usage is not limited to such applications. 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
8、 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 Commonwealth Drive, Warrendale, PA 15096-0001, Tel: 877-606-
9、7323 (inside USA and Canada) or 724-776-4970 (outside USA), 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 Rings AMS 2772 Heat Treatment of Aluminum Alloy Raw Materials SA
10、E AMS 4340E Page 2 of 5 2.2 ASTM Publications Available 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 594 Ultrasonic Inspection of Aluminum-Alloy Wrought Products for Aerospace Applications ASTM B 660 Packagin
11、g/Packing of Aluminum and Magnesium Products ASTM B 666/B 666M Identification Marking of Aluminum and Magnesium Products ASTM G 34 Exfoliation Corrosion Susceptibility in 2XXX and 7XXX Series Aluminum Alloys (EXCO Test) ASTM G 47 Determining Susceptibility to Stress-Corrosion Cracking of 2xxx and 7x
12、xx Aluminum Alloy Products 2.3 ANSI Publications Available from ANSI American National Standards Institute, 25 West 43rd Street, New York, NY 10036, Tel: 212-642-4900, www.ansi.org. ANSI H 35.2 Dimensional Tolerances for Aluminum Mill Products ANSI H 35.2M Dimensional Tolerances for Aluminum Mill Pr
13、oducts (Metric) 3. TECHNICAL REQUIREMENTS 3.1 Composition Shall conform to the percentages by weight shown in Table 1, determined in accordance with AMS 2355. TABLE 1 - COMPOSITION Element min max Silicon - 0.12 Iron - 0.15 Copper 2.0 2.6 Manganese - 0.10 Magnesium 1.9 2.6 Chromium - 0.04 Zinc 5.7 6
14、.7 Titanium - 0.06 Zirconium 0.08 0.15 Other Elements, each - 0.05 Other Elements, total - 0.15 Aluminum remainder 3.2 Condition Solution heat treated, stress relieved by stretching to produce a nominal permanent set of 1.5%, but not less than 1% nor more than 3%, and precipitation treated to the T7
15、6511 temper. Solution and precipitation heat treatments shall be performed in accordance with AMS 2772. 3.2.1 The product may receive minor straightening, after stretching, of an amount necessary to meet the requirements of 3.5. 3.2.2 Extrusions shall be supplied with an as-extruded surface finish;
16、light polishing to remove minor surface imperfections is permissible provided such imperfections can be removed within specified dimensional tolerances. 3.3 Properties Product shall conform to the following requirements, determined in accordance with AMS 2355: on the mill produced size. SAE AMS 4340
17、E Page 3 of 5 3.3.1 Tensile Properties Shall be as shown in Table 2A or 2B. TABLE 2A - MINIMUM LONGITUDINAL TENSILE PROPERTIES, INCH/POUND UNITS Nominal Diameter or Least Thickness (Wall Thickness of Tubing) Inches TensileStrengthksi Yield Strengthat 0.2% Offsetksi Elongation in 4D % Up to 0.499, in
18、cl 77.0 68.0 7 Over 0.499 to 5.000, incl 79.0 69.0 7 TABLE 2B - MINIMUM LONGITUDINAL TENSILE PROPERTIES, SI UNITS Nominal Diameter or Least Thickness (Wall Thickness of Tubing) Millimeters TensileStrengthMPa Yield Strengthat 0.2% OffsetMPa Elongation in 4D % Up to 12.67, incl 531 469 7 Over 12.67 to
19、 127.00, incl 545 476 7 3.3.2 Corrosion Resistance Resistance to stress-corrosion cracking and to exfoliation-corrosion shall be acceptable if extrusions conform to the requirements of 3.3.2.1 and 3.3.2.2. 3.3.2.1 Electrical Conductivity Shall be 39.0% International Annealed Copper Standard (IACS) (
20、22.6 MS/m) or greater. 3.3.2.2 Stress-Corrosion Susceptibility Factor (SCF) If electrical conductivity is 37.0 to 38.9% IACS (21.5 to 22.6 MS/m), the SCF shall be not greater than 39.0 (270), determined by subtracting the electrical conductivity (AA.A IACS 12 times BB.B MS/m) from the longitudinal y
21、ield strength (XX.X ksi YYY MPa). Examples: Inch/Pound Units: 78.0 ksi - 37.5% IACS = 40.5, Unacceptable 74.0 ksi - 38.5% IACS = 35.5, Acceptable SI Units: 538 MPa - (12 21.8 MS/m) = 276, Unacceptable 510 MPa - (12 22.3 MS/m) = 242, Acceptable 3.3.2.3 Extrusions not conforming to 3.3.2.1 or 3.3.2.2
22、may be given additional precipitation heat treatment and retested to determine conformance to 3.3.1 and 3.3.2.1 or 3.3.2.2. 3.3.3 Exfoliation-Corrosion Resistance Specimens, cut from extrusions and tested per ASTM G 34 , shall not exhibit exfoliation corrosion, at a T/10 plane, greater than that ill
23、ustrated by photograph B, Figure 2, of ASTM G 34. 3.3.4 Stress-Corrosion Resistance Specimens, cut from extrusions 0.750 inch (19.05 mm) and over in nominal diameter or least thickness, shall show no evidence of stress-corrosion cracking when stressed in the short-transverse direction at 17.0 ksi (1
24、17 MPa) per ASTM G 47. SAE AMS 4340E Page 4 of 5 3.4 Quality Extrusions, as received by purchaser, shall be uniform in quality and condition, sound, and free from foreign materials and from imperfections detrimental to usage of the extrusions. 3.4.1 When specified, bars, rods, and profiles shall be
25、subjected to ultrasonic inspection in accordance with ASTM B 594. Extrusions, 0.500 to 1.499 inches (12.70 to 38.07 mm), inclusive, in nominal thickness, not exceeding 600 pounds (272 kg) in weight per piece, or a 10 to 1 width-to-thickness ratio, shall meet ultrasonic class B. Extrusions, over 1.49
26、9 inches (38.07 mm) in nominal thickness not exceeding 600 pounds (272 kg) in weight per piece, or a 10 to 1 width-to-thickness ratio, shall meet ultrasonic class A. 3.5 Tolerances Shall conform to all applicable requirements of ANSI H35.2 or ANSI H35.2M. 4. QUALITY ASSURANCE PROVISIONS 4.1 Responsi
27、bility for Inspection The vendor of extrusions 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 extrusions conform to speci
28、fied requirements. 4.2 Classification of Tests 4.2.1 Acceptance Tests Composition (3.1), tensile properties (3.3.1), corrosion resistance (3.3.2), ultrasonic inspection when specified (3.4.1), and tolerances (3.5) are acceptance tests and, except for composition, shall be performed on each lot. 4.2.
29、2 Periodic Tests Exfoliation-corrosion resistance (3.3.3) and stress-corrosion resistance (3.3.4) are periodic tests and shall be performed at a frequency selected by the vendor unless frequency of testing is specified by purchaser. 4.3 Sampling and Testing Shall be in accordance with AMS 2355. 4.4
30、Reports The vendor of extrusions shall furnish with each shipment a report stating that the extrusions conform to the composition, ultrasonic inspection when specified, and tolerances and showing the numerical results of tests on each inspection lot to determine conformance to the other acceptance t
31、est requirements. This report shall include the purchase order number, inspection lot number, AMS 4340E, size or section identification number, and quantity. The report shall also identify the producer, the mill product form, and the mill produced size. 4.5 Resampling and Retesting Shall be in accor
32、dance with AMS 2355. 5. PREPARATION FOR DELIVERY 5.1 Identification Shall be in accordance with ASTM B 666/B 666M. SAE AMS 4340E Page 5 of 5 5.2 Packaging Extrusions shall be prepared for shipment in accordance with ASTM B 660 6. ACKNOWLEDGMENT A vendor shall mention this specification number and it
33、s revision letter in all quotations and when acknowledging purchase orders. 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
34、 user in locating areas where technical revisions, not editorial changes, 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 ori
35、ginal publications, nor in specifications 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 Celsius 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: AMS 4340E Form and size or section identification number of extrusions desired Quantity of extrusions desired. PREPARED BY AMS COMMITTEE “D”
