1、Aluminum Alloy 2024, Bar, Rod, Shapes,Tube, and Wire, ExtrudedA92024RATIONALEThis document has been reaffirmed to comply with the SAE 5-year Review policy.NOTICEThis document has been taken directly from Federal Specification QQ-A-200/3F and contains only minor editorial and format changes required
2、to bring it into conformance with the publishing requirements of SAE technical standards.The original Federal Specification was adopted as an SAE standard under the provisions of the SAE Technical Standards Board (TSB) Rules and Regulations (TSB 001) pertaining to accelerated adoption of government
3、specifications and standards. TSB rules provide for (a) the publication of portions of unrevised government specifications and standards without consensus voting at the SAE Committee level, (b) the use of the existing government specification or standard format, and (c) the exclusion of any qualifie
4、d product list (QPL) sections.The complete requirements for procuring aluminum alloy 2024 bar, rod, shapes, tube, and wire extruded described herein shall consist of this document and the latest issue of AMS-QQ-A-200.AEROSPACE MATERIAL SPECIFICATIONAMS-QQ-A-200/3Issued Reaffirmed1997-072010-05SAE Te
5、chnical 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 therefrom, is
6、 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 2010 SAE International All rights reserved. No part of this publication may be re
7、produced, 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) Fax:
8、 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/AMSQQA200/3 AMS-QQ-A-200/3 SAE AMS-QQ-A-200/3- 2 -1. SCOPE AND CLASSIFICATION:1.1 Scope: This specifi
9、cation covers the specific requirements for aluminum alloy 2024 bar, rod, shapes, tube, and wire produced by extrusion.1.2 Classification: 1.2.1 Tempers: Bar, rod, shapes, tube, and wire are classified in the following tempers as specified (See 6.2): O, T3, T42, T3510, T3511, T81, T8510, or T8511. D
10、efinitions of tempers are specified in AMS-QQ-A-200.1.2.2 Tubing: Tubing shall be additionally classified as follows:2. APPLICABLE DOCUMENTS: See AMS-QQ-A-200.Type DescriptionI - Tubing extruded from hollow billets using die and mandrel (SeeAMS-QQ-A-200).II - Tubing extruded from solid billets using
11、 a porthole or spiderdie similar tooling (See AMS-QQ-A-200).AMS-QQ-A-200/3 SAE AMS-QQ-A-200/3- 3 -3. REQUIREMENTS: 3.1 Chemical Composition: The chemical composition shall conform to the requirements specified in Table I.TABLE I. Chemical Composition 1/ElementPercentMinimum MaximumCopper 3.8 4.9Magn
12、esium 1.2 1.8Manganese 0.30 0.9Iron - 0.50Silicon - 0.50Zinc - 0.25Chromium - 0.10Titanium - 0.15Other Elements, each - 0.05Other Elements, total 2/- 0.15Aluminum Remainder1/ Analysis shall routinely be made only for the elements specifically mentioned in Table I. If, however, the presence of other
13、elements is indicated or suspected in amounts greater than the specified limits, further analysis shall be made to determine that these elements are not present in excess of specified limits.2/ The sum of those “Others“ metallic elements 0.010 percent or more each, expressed to the second decimal be
14、fore determining the sum.AMS-QQ-A-200/3 SAE AMS-QQ-A-200/3- 4 -3.2 Mechanical Properties: 3.2.1 Mechanical Properties of Material as Supplied: The mechanical properties in the direction of extrusion shall conform to requirements specified in Table II.TABLE II. Mechanical PropertiesTemperThickness, (
15、bar andshapes); diameter,(rod and wire); wallthickness, (tube),InchesAreaSquareInchesTensileStrength,Minimum,ksiYield Strengthat 0.2 percentOffset or atextensionindicatedElongation in2 inches or 4times D 1/, 7/,Minimum,percentMinimum,ksiExtensionunder load,inch perinchOAlAl2/2/ 0.0038 12T3 8/ Up to
16、0.249, incl All 57.0 42.0 0.0060 12 5/T3510 9/ 0.250 to 0.749, incl All 60.0 44.0 0.0062 12 5/T3511 9/ 0.750 to 1.499, incl All 65.0 46.0 0.0063 101.500 and over Up thru 25 70.0 52.0 3/ 0.0069 101.500 and over Over 25 thru3268.0 48.0 4/ 0.0065 8T42 6/ Up to 0.749, incl All 57.0 38.0 0.0056 120.750 t
17、o 1.499, incl All 57.0 38.0 0.0056 101.500 and over Up thru 25 57.0 38.0 0.0056 101.500 and over Over 25 thru 57.0 38.0 0.0056 832T81, 0.050 to 0.249, incl All 64.0 56.0 0.0073 4T8510 9/, 0.250 to 1.499, incl All 66.0 58.0 0.0075 5T8511 9/ 1.500 and over Up thru 32 66.0 58.0 0.0075 51/ D represents
18、specimen diameter.2/ No minimum. Maximum tensile and yield strengths shall be 35.0 ksi and 19.0 ksi, respectively.3/ For tube, minimum yield strength is 48.0 ksi and extension under load is 0.0065 inch per inch.4/ For tube, minimum yield strength is 46.0 ksi and extension under load is 0.0063 inch p
19、er inch.5/ For tube, minimum elongation is 10 percent.6/ Material in the T42 temper is not available from material producers.7/ See AMS-QQ-A-200 for elongation requirement exceptions.8/ The properties specified for the T3 temper are those formerly specified for the T4 temper.9/ For stress-relieved t
20、empers, the characteristics and properties, other than those specified, may differ somewhat from the corresponding characteristics and properties of the material in the basic temper.AMS-QQ-A-200/3 SAE AMS-QQ-A-200/3- 5 -3.2.2 Mechanical Properties After Heat Treatment: In addition to conforming to r
21、equirements of 3.2.1, materials identified in the following paragraphs shall, after having been heat-treated to other tempers also identified therein, have properties in the extrusion direction conforming to those specified in Table II, as applicable.3.2.2.1 Material in the O Temper: Material in the
22、 O temper, without the subsequent imposition of cold work or forming operations, shall, after proper solution heat treatment and natural aging, develop the properties specified in Table II for the T42 temper.3.2.2.2 Material in the T3, T3510, T3511, T81, T8510, and T8511 Tempers: Material in the T3,
23、 T3510, T3511, T81, T8510, and T8511 tempers shall, without the subsequent imposition of cold work or forming operations, be capable of being re-solution heat-treated and naturally aged to the properties specified for the T42 temper. Such capability shall be demonstrated when specified (See 6.2).3.2
24、.2.3 Material in the T3, T3510, and T3511 Tempers: Material in the T3, T3510, and T3511 tempers shall be hardenable by artificial aging to the properties specified for the T81, T8510, and T8511 tempers, respectively. Such capability shall be demonstrated when specified (See 6.2).3.3 Internal Defects
25、: When specified (See 6.2), bar, rod, tube, and shapes shall be ultrasonically inspected (See AMS-QQ-A-200). Acceptance limits shall be as specified in Table III. The technique for testing tubes shall be as agreed upon by the procuring activity and the contractor (See 6.2).TABLE III. Ultrasonic Disc
26、ontinuity Acceptance Limits 1/, 3/Thickness,(bar and shapes);diameter, (rod);wall thickness, (tube)Inches 4/Maximum weightper piece,poundsMaximum widthto thicknessratioDiscontinuityclass2/0.500 and over 600 10 to 1 B1/ Discontinuities in excess of those listed in Table III may be allowed subject to
27、approval of the procuring activity, if it is established that they will be removed by machining or that they are in noncritical areas.2/ The discontinuity class limits are defined in MIL-STD-2154.3/ Requirements for ultrasonic inspection for sizes, maximum weights, and discontinuity classes differin
28、g from those shown in Table III and for rod shall be specified in the contract provided the techniques and standards are agreed to by the procuring activity and the producer (See 6.2).4/ For thickness of a shape, see definition for shape in AMS-QQ-A-200.AMS-QQ-A-200/3 SAE AMS-QQ-A-200/3- 6 -3.4 Mark
29、ing: In addition to marking required by AMS-QQ-A-200, material in the T81, T8510, T8511, T3, T3510, and T3511 tempers shall also be identified by inspection lot number marked in at least one location on each piece.4. QUALITY ASSURANCE PROVISIONS: See AMS-QQ-A-200 and the following:4.1 Heat Treatment
30、: 4.1.1 Aging Treatment Before Testing: Specimens selected for treatment to T3, T3510, T3511, and T42 tempers may be tested within 4 days after completion of the solution heat treatment. If these tests fail, the manufacturer may elect to test additional specimens from the same sample lot after the e
31、xpiration of at least 4 days after the date of solution heat treatment. These specimens shall be taken from the same location in the lot as the prior specimens.4.2 Mechanical Test After Heat Treatment: 4.2.1 Number of Tests After Heat Treatment: From material in the O temper, additional sets of spec
32、imens equal in the number to those required by AMS-QQ-A-200 shall be taken and tested after solution heat treatment to determine compliance with 3.2.2.1. When specified (See 6.2), from material in a temper other than the O temper, an additional number of specimens equal to those specified by AMS-QQ-
33、A-200 shall be taken and tested after re-solution treatment, where specified, and the appropriate aging treatment to determine compliance with 3.2.2.2 or 3.2.2.3, as applicable.5. PREPARATION FOR DELIVERY: See AMS-QQ-A-200.6. NOTES:6.1 Intended Use: This alloy is intended for use where high strength
34、 is required and no welding is involved. Tempers T3, T42, T3510, and T3511 should not be used where optimum corrosion resistance is required. Tempers T81, T8510, and T8511 should be specified when optimum resistance to stress corrosion is required. The T3510 and T8510 tempers are intended primarily
35、to provide material with low residual stresses and consequent minimum distortion during machining. The T3511 and T8511 tempers are straightened T3510 and T8510 material, respectively, and may have unknown residual stresses and may or may not distort during machining.AMS-QQ-A-200/3 SAE AMS-QQ-A-200/3
36、- 7 -6.2 Ordering Data: Purchasers should select the preferred options permitted herein and include the following information in procurement documents:Title, number, and date of this specification.Form, quantity, and temper required (See 1.2.1).Dimensions required.Requirements for sizes not specific
37、ally covered (See AMS-QQ-A-200).Demonstrations of heat treatability of alloy in tempers other than the O temper.Whether ultrasonic inspection of bar, rod, and shapes is required (See 3.3).Special end use requirements.Selection of applicable levels of preservation and packing, whether Level A, Level
38、B, or commercial (See AMS-QQ-A-200).Whether Type II tubing may be applied (See 1.2.2).6.3 Properties After Heat Treatment: Mechanical properties and corrosion properties, where applicable, are certified for the temper of material supplied. The producers capability demonstration is not evidence that
39、user-treated material conforms to property requirements of a given temper. Frequently, user-heat-treated material may develop a lower level of properties, especially if any cold, warm, or hot work is introduced, prior to solution heat treatment. The user should be held responsible for demonstrating
40、that his processing will yield properties meeting requirements.6.4 Product produced and marked to the requirements of AMS-QQ-A-200/3 also meets the requirements of QQ-A-200/3F. Product produced and marked to the requirements of QQ-A-200/3F also meets the requirements of AMS-QQ-A-200/3.6.5 The properties listed in 3.2.1 are exactly the same as QQ-A-200/3, Revision F. These properties have not been substantiated in accordance with the Manual for Preparation of Aerospace Specifications.PREPARED UNDER THE JURISDICTION OF AMS COMMITTEE “D“
