SAE AMS 4268A-2017 Aluminum Alloy Sheet and Plate 4 4Cu - 1 5Mg - 0 60Mn (2024-T81 Sheet -T851 Plate) Solution Heat Treated Cold Worked and Artificially Aged (UNS A92024).pdf

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 2017 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:/standards.sae.org/AMS4268A AEROSPACE MATERIAL SPECIFICATION AMS4268 REV. A Issued 2011-12 Revised 2017-11 Superse

5、ding AMS4268 Aluminum Alloy, Sheet and Plate 4.4Cu - 1.5Mg - 0.60Mn; (2024-T81 Sheet, -T851 Plate) Solution Heat Treated, Cold Worked and Artificially Aged (Composition similar to UNS A92024) RATIONALE AMS4268A revises Condition (3.2), Properties (3.3), Classification of Testing (4.2), Reports (4.4)

6、, and Identification (5.1.1), and is a Five-Year Review and udpate of this specification. 1. SCOPE 1.1 Form This specification covers an aluminum alloy in the form of sheet and plate 0.010 to 1.500 inch (0.254 to 38.07 mm), inclusive, in thickness, supplied in the -T81/-T851 temper (see 8.5). 1.2 Ap

7、plication These products have been used typically for high strength parts requiring higher yield strength than is afforded by naturally aged tempers of this alloy and whose fabrication does not involve welding, but usage is not limited to such applications. 2. APPLICABLE DOCUMENTS The issue of the f

8、ollowing 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 superse

9、ding 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 Quality

10、Assurance, Sampling and Testing, Aluminum Alloys and Magnesium Alloy, Wrought Products (Except Forging Stock), and Rolled, Forged, or Flash Welded Rings AMS2772 Heat Treatment of Aluminum Alloy Raw Materials ARP1917 Clarification of Terms Used in Aerospace Metals Specifications SAE INTERNATIONAL AMS

11、4268A Page 2 of 5 2.2 ANSI Publications Copies of these documents are available online at http:/webstore.ansi.org/. ANSI H35.1/H35.1M Standard Alloy and Temper Designation System For Aluminum ANSI H35.2 Dimensional Tolerances for Aluminum Mill Products ANSI H35.2M Dimensional Tolerances for Aluminum

12、 Mill Products (Metric) 2.3 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 B594 Ultrasonic Inspection of Aluminum-Alloy Products for Aerospace Applications ASTM B660 Packaging/Packing

13、of Aluminum and Magnesium Products ASTM B666/B666M Identification Marking of Aluminum and Magnesium Alloy Products 3. TECHNICAL REQUIREMENTS 3.1 Composition Shall conform to the percentages by weight as shown in Table 1, determined in accordance with AMS2355. Table 1 Element Min Max Silicon - 0.50 I

14、ron - 0.50 Copper 3.8 4.9 Manganese 0.30 0.9 Magnesium 1.2 1.8 Chromium - 0.10 Zinc - 0.25 Titanium - 0.15 Other Elements, each - 0.05 Other Elements, total - 0.15 Aluminum remainder 3.2 Condition The product shall be supplied in the following condition: 3.2.1 Sheet Solution heat treated, cold worke

15、d and artificially aged to the T81 temper (see ANSI H35.1/H35.1M). Solution and preciptation heat treatment shall be in accordance with AMS2772. The recommended precipitation heat treatment is 365 to 385 F (185 to 196 C) for 12 hours. 3.2.2 Plate Solution heat treated, stretched to produce a nominal

16、 permanent set of 2% but not less than 1-1/2% nor more than 3%, and artificially aged to the T851 temper (see ANSI H35.1/H35.1M). Solution and precipation heat treatment shall be in accordance with AMS2772. The recommended precipitation heat treatment is 365 to 385 F (185 to 196 C) for 12 hours. 3.2

17、.2.1 Plate shall receive no further straightening operations after stretching. SAE INTERNATIONAL AMS4268A Page 3 of 5 3.3 Properties The product shall conform to the following requirements, determined in accordance with AMS2355 on the mill produced size. 3.3.1 Tensile Properties Shall be as shown in

18、 Table 2 (see 8.4). Table 2 Table 2A - Minimum tensile properties, inch/pound units Temper Nominal Thickness, Inches Tensile Strength, ksi Yield Strength at 0.2% Offset, ksi Elongation in 2 inches or 4D, % -T81 0.010 to 0.249, incl 67.0 58.0 5 -T851 Over 0.249 to 0.499, incl Over 0.499 to 1.000, inc

19、l Over 1.000 to 1.500 67.0 66.0 66.0 58.0 58.0 57.0 5 5 5 Table 2B - Minimum tensile properties, SI units Temper Nominal Thickness, Millimeters Tensile Strength, MPa Yield Strength at 0.2% Offset, MPa Elongation in 50.8 mm or 4D, % -T81 0.254 to 6.32, incl 462 400 5 -T851 Over 6.32 to 12.67, incl Ov

20、er 12.67 to 38.10, incl Over 25.40 to 38.07 462 455 455 400 400 393 5 5 5 3.3.2 Mechanical property requirements for product outside of the range covered by 1.1 shall be agreed upon between purchaser and producer. 3.4 Quality The product, as received by purchaser, shall be uniform in quality and con

21、dition, sound, and free from foreign materials and from imperfections detrimental to usage of the product. 3.5 Ultrasonic Inspection 3.5.1 When specified, each plate 0.500 inch (12.70 mm) and over in nominal thickness shall be ultrasonically inspected in accordance with ASTM B594, Class B requiremen

22、ts. 3.6 Tolerances Shall conform to all applicable requirements of ANSI H35.2/H35.2M. 4. QUALITY ASSURANCE PROVISIONS 4.1 Responsibility for Inspection The producer of the product shall supply all samples for producers tests and shall be responsible for the performance of all required tests. Purchas

23、er reserves the right to sample and to perform any confirmatory testing deemed necessary to ensure that the product conforms to specified requirements. SAE INTERNATIONAL AMS4268A Page 4 of 5 4.2 Classification of Tests 4.2.1 Acceptance Tests Composition (3.1), tensile properties (3.3.1), and toleran

24、ces (3.6) and, when specified, ultrasonic soundness (3.5.1) are acceptance tests and except for composition, shall be performed on each lot. 4.3 Sampling and Testing Shall be in accordance with AMS2355. 4.4 Reports The producer of the product shall furnish with each shipment a report stating that th

25、e product conforms to the composition and tolerances, and showing numerical results of tests for the other acceptance test requirements. This report shall include the purchase order number, lot number, AMS4268A, size, and quantity. The report shall also identify the producer, the product form, and t

26、he size of the mill product. 4.4.1 When material produced to this specification is beyond the sizes allowed in the scope of tables, or other exceptions are taken to the technical requirements listed in Section 3 (see 5.1.1), the report shall contain a statement “This material is certified as AMS4268

27、A(EXC) because of the following exceptions.” and the specific exceptions shall be listed. 4.5 Resampling and Retesting Shall be in accordance with AMS2355. 5. PREPARATION FOR DELIVERY 5.1 Identification Shall be in accordance with ASTM B666/B666M. 5.1.1 When technical exceptions are taken (see 4.4.2

28、), the material shall be marked with AMS4268(EXC). 5.2 Packaging 5.2.1 Product shall be protected from damage during storage and shipment by a method determined by the producer unless specified by purchaser. Examples of typical protective methods include but are not limited to interleaving with pape

29、r or oiling of the surface. 5.2.2 The product shall be prepared for shipment in accordance with ASTM B660 and in compliance with applicable rules and regulations pertaining to the handling, packaging, and transportation of the product to ensure carrier acceptance and safe delivery. 6. ACKNOWLEDGMENT

30、 A producer shall mention this specification number in all quotations and when acknowledging purchase orders. 7. REJECTIONS Product not conforming to this specification, or to modifications authorized by purchaser, will be subject to rejection. SAE INTERNATIONAL AMS4268A Page 5 of 5 8. NOTES 8.1 Rev

31、ision Indicator A change bar (I) 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 left of the document title indicates a complete revision of t

32、he document, including technical revisions. Change bars and (R) are not used in original publications, nor in documents 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;

33、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 The tensile properties in Table 2 were taken directly from QQ-A-250/4E Amendment 2 (AMS-QQ-A-250/4A) and have not been independ

34、ently verified by AMS statistical procedures. 8.5 Purchase documents should specify not less than the following: AMS4268A Product form and size of product desired Ultrasonic Inspection (if required) (see 3.5) Property and acceptance requirements from the cognizant engineering organization applicable to sizes outside the range listed in 1.1 Quantity of product desired PREPARED BY AMS COMMITTEE “D“