SAE AMS 4415A-2008 Aluminum Alloy Extrusions 8 9Zn - 2 2Cu - 2 2Mg - 0 15Zr (7136-T76511 -T76510) Solution Heat Treated Stress-Relieved Straightened and Overaged《8 9Zn 2 2Cu 2 2Mg .pdf

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1、AEROSPACE MATERIAL SPECIFICATION AMS4415 REV. A Issued 2008-07 Revised 2008-11 Reaffirmed 2015-05 Superseding AMS4415 Aluminum Alloy Extrusions 8.9Zn - 2.2Cu - 2.2Mg - 0.15Zr (7136-T76511, -T76510) Solution Heat Treated, Stress-Relieved, Straightened, and Overaged RATIONALE AMS4415A has been reaffir

2、med to comply with the SAE five-year review policy. _ 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

3、use, including any patent infringement arising therefrom, 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 2015 SAE

4、International All rights reserved. No part of this publication 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-

5、606-7323 (inside USA and Canada) Tel: +1 724-776-4970 (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/AMS4415A 1. SCOPE 1.1 Form Th

6、is specification covers an aluminum alloy in the form of extruded bars, rods, wire, profiles (shapes) and tubing. 1.2 Application These extrusions have been used typically for structural applications requiring a combination of high tensile and compressive strength and good corrosion resistance, but

7、usage is not limited to such applications. 1.3 Certain processing procedures may cause this product to become susceptible to stress-corrosion cracking; ARP823 recommends practices to minimize such conditions. 2. APPLICABLE DOCUMENTS The issue of the following documents in effect on the date of the p

8、urchase 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 referenced document has been cancelled and no superseding document has been specified, the last publis

9、hed issue of that document shall apply. 2.1 SAE Publications Available from 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

10、 Magnesium Alloy, Wrought Products, Except Forging Stock, and Rolled, Forged, or Flash Welded Rings AMS2772 Heat Treatment of Aluminum Alloy Raw Materials ARP823 Minimizing Stress-Corrosion Cracking in Wrought Heat-Treatable Aluminum Alloy Products AS1990 Aluminum Alloy Tempers 2.2 ASTM Publications

11、 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 Packaging/Packing of Aluminum and Magnesium Products

12、ASTM B 666/B 666M Identification Marking of Aluminum and Magnesium Products ASTM E 1004 Determining Electrical Conductivity Using the Electromagnetic (Eddy Current) Method ASTM G 34 Exfoliation Corrosion Susceptibility in 2XXX and 7XXX Series Aluminum Alloys (EXCO Test) ASTM G 47 Determining Suscept

13、ibility to Stress-Corrosion Cracking of 2XXX and 7XXX /Aluminum Alloy Products 2.3 ANSI Publications Available 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 Products ANSI

14、H35.2M Dimensional Tolerances for Aluminum Mill Products (Metric) 3. TECHNICAL REQUIRMENTS 3.1 Composition Shall conform to the percentages by weight shown in Table 1, determined in accordance with AMS2355. TABLE 1 - COMPOSITION Element min max Silicon - 0.12 Iron - 0.15 Copper 1.9 2.5 Manganese - 0

15、.05 Magnesium 1.8 2.5 Chromium - 0.05 Zinc 8.4 9.4 Titanium Zirconium - 0.10 0.10 0.20 Other Elements, each - 0.05 Other Elements, total - 0.15 Aluminum remainder 3.2 Condition Extrusions shall be solution heat-treated, stress relieved by stretching after solution treatment to produce a nominal perm

16、anent set of 1.5 percent, but not less than 1 percent or more than 3 percent, and overaged to the -T76511, -T76510 temper (See AS1990). 3.2.1 Extrusions in the T76511 temper may receive minor straightening, after stretching, of an amount necessary to meet tolerance requirements of 3.6. 3.2.2 Extrusi

17、ons shall be supplied with an as-extruded surface finish. Repair to remove minor surface imperfections is permissible provided such imperfections can be removed within specified dimensional tolerances. SAE INTERNATIONAL AMS4415A Page 2 of 6_ 3.3 Heat Treatment Shall be performed in accordance with t

18、he requirements of AMS2772, except as follows: 3.3.1 Solution Heat Treatment Heat to 870 to 890 F (466 to 477 C), hold at heat for a time commensurate with product thickness and rapidly cool in a suitable quenching medium. 3.3.2 Overaging Heat Treatment Overaging shall be performed at the specific t

19、imes and temperatures necessary to meet the requirements of 3.4 (See 8.2). 3.4 Properties Extrusions shall conform to the following requirements, determined on the mill product in accordance with AMS2355: 3.4.1 Longitudinal tensile properties shall conform to the requirements specified in Table 2A a

20、nd 2B. TABLE 2A - MINIMUM TENSILE PROPERTIES, INCH/POUND UNITS Nominal Diameter or Least Thickness (bars, rods, wire, profiles) or Nominal Wall Thickness (tubing) Inches Tensile Strength ksi Yield Strength At 0.2% Offset ksi Elongation in 2 Inches or 4D % 0.040 - 0.249 90.0 86.0 0.250 - 0.499 91.0 8

21、7.0 0.500 - 1.999 92.0 88.0 7 7 7 2.000 - 3.000 91.0 88.0 3.001 - 4.000 90.0 86.0 8 8 TABLE 2B - MINIMUM TENSILE PROPERTIES, SI UNITS Nominal Diameter or Least Thickness (bars, rods, wire, profiles) or Nominal Wall Thickness (tubing) Millimeters Tensile Strength MPa Yield Strength At 0.2% Offset MPa

22、 Elongation in 50 mm % Elongation in 5D or 5.65A 1.00 - 6.30 621 593 7 - 6.30 - 12.50 627 600 7 - 12.50 - 50.00 634 607 - 6 50.00 - 80.00 627 607 - 7 80.00 - 100.00 621 593 - 7 3.4.2 Corrosion Resistance 3.4.2.1 Exfoliation-Corrosion Resistance Specimens, cut from extrusions, shall not exhibit exfol

23、iation corrosion greater than that exhibited by Photo EB of ASTM G 34 at a T/10 plane. SAE INTERNATIONAL AMS4415A Page 3 of 6_ 3.4.2.2 Stress-Corrosion Cracking When specified, specimens cut from extrusions 0.750 inches (19.04 mm) and over in diameter or thickness shall show no evidence of stress co

24、rrosion cracking when stressed in the short-transverse direction (perpendicular to grain flow) to 25.0 ksi (172 MPa) for a minimum 20 day exposure, as determined in accordance with ASTM G 47. 3.4.3 Electrical Conductivity (EC) Electrical conductivity shall be equal to or greater than 36.0% IACS (Int

25、ernational Annealed Copper Standard) when performed in accordance with ASTM E 1004. 3.4.3.1 For material less than 0.750 inch thick, any heat treat lot with a conductivity reading below 36 percent IACS is acceptable provided that lot is tested for, and meets the exfoliation corrosion resistance requ

26、irements of 3.4.2.1 3.4.3.2 Extrusions with electrical conductivities less than 36% IACS may receive additional precipitation heat treatment. If, upon completion of such treatment, they meet the property requirements as specified in 3.4, they shall be acceptable. 3.5 Quality Product, as received by

27、the purchaser, shall be uniform in quality and condition, sound, and free from foreign material and from imperfections detrimental to the usage of the product. 3.5.1 When specified, bars, rods, and profiles (shapes) over 0.500 inches (12.70 mm) in thickness or diameter shall be subjected to ultrason

28、ic 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, 1.500 inches (38.10 mm) and ov

29、er in nominal thickness, not exceeding 600 pounds in weight (272 kg) per piece, or a 10 to 1 width-to-thickness ratio, shall meet ultrasonic Class A. 3.6 Tolerances Shall conform to all applicable requirements of ANSI H35.2 or ANSI H35.2M. 4. QUALITY ASSURANCE PROVISIONS 4.1 Responsibility for Inspe

30、ction 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 specified requirement

31、s. 4.2 Classification of Tests 4.2.1 Acceptance Tests Composition (3.1), tensile testing (3.4.1), electrical conductivity (3.4.3), tolerances (3.6) and ultrasonic inspection (3.5.1) (when specified) are acceptance tests and, except for composition, shall be performed on each lot. 4.2.2 Periodic Test

32、s Exfoliation-corrosion resistance (3.4.2.1) and stress-corrosion cracking resistance (3.4.2.2) are periodic tests and shall be performed at a frequency selected by the vendor unless the purchaser specifies frequency of testing. SAE INTERNATIONAL AMS4415A Page 4 of 6_ 4.3 Sampling and Testing Shall

33、be in accordance with AMS2355. 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 numerical results of tests on each inspection lot to d

34、etermine conformance to the other acceptance test requirements, including periodic testing results when performed. This report shall include the purchase order number, mill producer, inspection lot number, AMS4415A, size or profile identification number, and quantity. 4.5 Resampling and Retesting Sh

35、all be in accordance with AMS2355. 5. PREPARATION FOR DELIVERY 5.1 Identification Shall be in accordance with ASTM B 666/B 666M 5.2 Packaging and Preservation Extrusions shall be prepared for shipment in accordance with ASTM B 660 and in compliance with applicable rules and regulations pertaining to

36、 the handling, packaging, and transportation of the product to ensure carrier acceptance and safe delivery. 6. ACKNOWLEDGMENT A vendor shall include this specification and its revision letter number in all quotations and when acknowledging purchase orders. 7. REJECTIONS Extrusions not conforming to

37、this specification, or to modifications authorized by purchaser, will be subject to rejection. 8. NOTES 8.1 A 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

38、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 in documents that contain editorial changes only. 8.2 Actual overaging treatments may be considered p

39、roprietary. 8.3 Terms used in AMS are clarified in ARP1917. 8.4 Dimensions and properties in inch/pound units and Fahrenheit temperatures are primary; dimensions and properties in SI units and Celsius temperatures are shown as the approximate equivalents of the primary units and are presented only f

40、or information. SAE INTERNATIONAL AMS4415A Page 5 of 6_ 8.5 Purchase documents should specify not less than the following: AMS4415A Form and size or profile identification number of extrusions desired Quantity of extrusions desired. PREPARED BY AMS COMMITTEE “D“ SAE INTERNATIONAL AMS4415A Page 6 of 6_