SAE AMS 4324A-2016 Aluminum Alloy Extruded Rod Bar and Profiles (7055-T74511) 8 0Zn - 2 3Cu - 2 0Mg - 0 16Zr Solution Heat Treated Stress-Relieved and Overaged (UNS A97055).pdf

1、 6$(7HFKQLFDO6WDQGDUGV%RDUG5XOHVSURYLGHWKDW7KLVUHSRUWLVSX EOLVKHG 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 therefrom, is th

2、e sole responsibility RIWKHXVHU 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 International All rights reserved. No part of this publication may

3、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 USA)

4、 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/AMS4324A AEROSPACE MATERIAL SPECIFICATION AMS4324 REV. A Issued 2002-08 Reaffirmed 2010-05 Revis

5、ed 2016-02 Superseding AMS4324 Aluminum Alloy, Extruded Rod, Bar and Profiles (7055-T74511) 8.0Zn - 2.3Cu - 2.0Mg - 0.16Zr Solution Heat Treated, Stress-Relieved, and Overaged (Composition similar to UNS A97055) RATIONALE AMS4324A revises Properties (3.4.3, 3.4.5, 3.4.6) and Reports (4.4.1), and is

6、a Five Year Review and update of this specification. 1. SCOPE 1.1 Form This specification covers an aluminum alloy in the form of extruded bars, rods, and profiles (shapes) produced with a cross sectional area of 24 in2 (155 cm2) maximum and a circumscribing circle (see 8.3) diameter (circle size) o

7、f 10.5 inches (267 mm) maximum (see 8.6). 1.2 Application These extrusions have been used typically for machined parts requiring a combination of high mechanical properties and good resistance to exfoliation corrosion, but usage is not limited to such applications. 2. APPLICABLE DOCUMENTS The issue

8、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 referenced document has been cancelled and no

9、 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: 877-606-7323 (inside USA and Canada) or +1 724-776-4970 (outside USA), www.sae.org. AMS2355

10、Quality Assurance, Sampling and Testing, Aluminum Alloys and Magnesium Alloy, Wrought Products, (Except Forging Stock) and Rolled, Forged, or Flash Welded Rings SAE INTERNATIONAL $06$ Page 2 of 6 AMS2772 Heat Treatment of Aluminum Alloy Raw Material AS1990 Aluminum Alloy Tempers 2.2 ASTM Publication

11、s 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 B594 Ultrasonic Inspection of Aluminum-Alloy Wrought Products for Aerospace Applications ASTM B660 Packaging/Packing of Aluminum and Magnesium Products A

12、STM B666/B666M Identification Marking of Aluminum and Magnesium Products ASTM E1004 Determining Electrical Conductivity using the Electromagnetic (Eddy Current) Method ASTM G34 Exfoliation Corrosion Susceptibility in 2xxx and 7xxx Series Aluminum Alloys (EXCO Test) ASTM G47 Determining Susceptibilit

13、y to Stress-Corrosion Cracking of High-Strength Aluminum Alloy Products 2.3 ANSI Accredited Publications Copies of these documents are available online at http:/webstore.ansi.org/. ANSI H35.2 Dimensional Tolerances for Aluminum Mill Products ANSI H35.2M Dimensional Tolerances for Aluminum Mill Produ

14、cts (Metric) 3. TECHNICAL REQUIREMENTS 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 - 0.10 Iron - 0.15 Copper 2.0 2.6 Manganese - 0.05 Magnesium 1.8 2.3 Chromium - 0.04 Zinc 7.6 8.4 T

15、itanium - 0.06 Zirconium 0.08 0.25 Other Elements, each - 0.05 Other Elements, total - 0.15 Aluminum remainder SAE INTERNATIONAL $06$ Page 3 of 6 3.2 Condition Extruded, solution heat-treated and stress-relieved by stretching to produce a nominal permanent set of 1.5%, but not less than 1% nor more

16、than 3%, and overaged to the T74511 temper (see AS1990). 3.2.1 Product shall be supplied with an as-extruded surface finish; light polishing to remove minor surface conditions is permissible provided such conditions can be removed within specified dimensional tolerances. 3.2.2 Product may receive mi

17、nor straightening, after stretching, of an amount necessary to meet the requirements of 3.6. 3.3 Heat Treatment Extrusions shall conform to the following requirements, determined on the mill produced size, in accordance with AMS2355 and as specified herein: 3.3.1 Solution Heat Treatment shall be in

18、accordance with the requirements of AMS2772. 3.3.2 Overaging Heat Treatment Heat to 250 F 10 F (121 C 6 C), hold at heat for a time of 4 to 6 hours, then heat to 320 F 10 F (160 C 6 C), hold at heat for a time of 11 to 12 hours, and air cool. Alternate temperatures and times may be used provided the

19、 aged materials meet the specified requirements of 3.4. 3.4 Properties Product shall conform to the following requirements, determined in accordance with AMS2355 on the mill produced size. 3.4.1 Longitudinal Tensile Properties shall be as shown in Table 2A and 2B. Table 2A - Minimum longitudinal ten

20、sile properties, inch/pound units Nominal Thickness Inches Tensile Strength ksi Yield Strength at 0.2% Offset ksi Elongation in 2 Inches or 4D % Up to 0.249, incl 83.0 76.0 8 Over 0.249 to 0.499, incl 84.0 77.0 8 Over 0.499 to 3.000, incl 85.0 78.0 8 Table 2B - Minimum longitudinal tensile propertie

21、s, SI units Nominal Thickness Millimeters Tensile Strength MPa Yield Strength at 0.2% Offset MPa Elongation in 50.8 mm or 4D % Up to 6.34, incl 572 524 8 Over 6.34 to 12.68, incl 579 531 8 Over 12.68 to 76.20, incl 586 538 8 3.4.2 Longitudinal compressive yield strength, when specified, shall be as

22、shown in Table 3A and 3B. Table 3A - Minimum longitudinal compressive yield strength, inch/pound units Nominal Thickness Inches Compressive Yield Strength ksi Over 0.499 to 3.00, incl 79.0 SAE INTERNATIONAL $06$ Page 4 of 6 Table 3B - Minimum longitudinal compressive yield strength, SI units Nominal

23、 Thickness Millimeters Compressive Yield Strength MPa Over 12.68 to 76.20, incl 545 3.4.3 Mechanical property requirements for product outside the range covered by 1.1 shall be agreed upon between purchaser and producer. 3.4.4 Electrical Conductivity Shall be not lower than 37.5% IACS (International

24、 Annealed Copper Standard) (20.9 MS/m), determined on the surface of the test coupon prior to turning. 3.4.5 Exfoliation Corrosion Resistance Specimens cut from extrusions shall not exhibit exfoliation corrosion at a T/10 plane greater than EB as illustrated by Figure 2, of ASTM G34. 3.4.6 Stress Co

25、rrosion Cracking Specimens from extrusions with section thickness 0.750 inches (19.05 mm) and greater tested in accordance with ASTM G47, shall show no evidence of stress corrosion cracking when stressed in the short transverse direction (perpendicular to grain flow) to 35 ksi (241 MPa). 3.5 Quality

26、 Products, as received by purchaser, shall be uniform in quality and condition, sound and free from foreign materials and from conditions detrimental to usage of the extrusions. 3.5.1 When specified, each extrusion shall be subjected to ultrasonic inspection in accordance with ASTM B594. Extrusions,

27、 0.500 inch (12.7 mm) and over in nominal diameter or least distance between parallel sides, weighing 600 pounds (272 kg) and under, shall meet ultrasonic Class B requirements, as described in ASTM B594. 3.6 Tolerances Shall conform to all applicable requirements of ANSI H35.2 or ANSI H35.2M. 4. QUA

28、LITY ASSURANCE PROVISIONS 4.1 Responsibility for Inspection The producer of the products shall supply all samples for producerVWHVWVDQGVKDOOEHUHVSRQVLEOHIRUWKHSHUIRUPDQFHRIall required tests. Purchaser reserves the right to sample and to perform any confirmatory testing deemed necessary to ensure th

29、at the products conform to specified requirements 4.2 Classification of Tests 4.2.1 Acceptance Tests Composition (3.1), tensile properties (3.4.1), electrical conductivity (3.4.4), tolerances (3.6), compressive yield properties, when specified, (3.4.2), and ultrasonic inspection, when specified, (3.

30、5.1 ) are acceptance tests and, except for composition, shall be performed on each inspection lot. 4.2.2 Periodic Tests Exfoliation corrosion resistance (3.4.5) and stress corrosion cracking (3.4.6) are periodic tests and shall be performed at a frequency selected by the producer unless frequency of

31、 testing is specified by purchaser. SAE INTERNATIONAL $06$ Page 5 of 6 4.3 Sampling and Testing Shall be in accordance with AMS2355. 4.4 Reports The producer of product shall furnish with each shipment a report stating that the product conforms to the chemical composition, ultrasonic inspection when

32、 required, and tolerances and showing the numerical results of tests on each inspection lot to determine conformance to the other acceptance test requirements and stating that the final product conforms to the other technical requirements. This report shall include the purchase order number, inspect

33、ion lot number, AMS4324A, section identification number, mill product form and size, quantity and the identity of the producer. 4.4.1 When the product size is outside the range covered by 1.1, the report shall contain a statement to that effect. 4.5 Resampling and Retesting Shall be in accordance wi

34、th AMS2355. 5. PREPARATION FOR DELIVERY 5.1 Identification Shall be in accordance with ASTM B666/B666M. 5.2 Packaging and Preservation Products shall be prepared for shipment in accordance with ASTM B660 and in compliance with applicable rules and regulations pertaining to the handling, packaging, a

35、nd transportation of the product to ensure carrier acceptance and safe delivery. 6. ACKNOWLEDGMENT A producer shall mention this specification number in all quotations and when acknowledging purchase orders. 7. REJECTIONS Products not conforming to this specification, or to modifications authorized

36、by purchaser, will be subject to rejection. 8. NOTES 8.1 Revision Indicator 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 document. An (R) symbol to the l

37、eft 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 Extrusions should be visually inspected for the presence of intergranular attac

38、k (IGA). If detected, surface machining or milling is recommended to remove surface IGA which may occur during fabricating. 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 Terms used in AMS are

39、 clarified in ARP1917. SAE INTERNATIONAL $06$ Page 6 of 6 8.5 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

40、only for information. 8.6 Purchase documents should specify not less than the following: AMS4324A Form and size or section identification of extrusions desired Specify if compressive yield strength or ultrasonic testing is required Quantity of extrusions desired. Property and acceptance requirements from the cognizant engineering organization applicable to sizes outside the range shown in 1.1. PREPARED BY $06&200,77(