1、Aluminum Alloy, Rolled or Cold Finished Bars, Rods, and Wire4.4Cu - 1.5Mg - 0.60Mn (2024)Solution Heat Treated and Naturally Aged (T4)Solution Heat Treated, Cold Worked, and Naturally Aged (T351)(Composition similar to UNS A92024)RATIONALEThis document has been reaffirmed to comply with the SAE 5-ye
2、ar Review policy.1. SCOPE:1.1 Form: This specification covers two tempers of aluminum alloy in the form of bars, rods, and wire.1.2 Application: These products have been used typically for parts requiring good strength and whose fabrication does not involve welding, but usage is not limited to such
3、applications. 1.2.1 Certain design and processing procedures may cause these products 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 purchase order
4、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 published issue of t
5、hat document shall apply.AEROSPACE MATERIAL SPECIFICATIONAMS 4120RIssuedRevisedReaffirmedSuperseding AMS 4120P1941-112002-092010-05SAE 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
6、entirely voluntary, and its applicability and suitability for any particular 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 reaffirmed, revised, or cancelled. SAE i
7、nvites your written comments and suggestions. Copyright 2010 SAE 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 prio
8、r 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: 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 ht
9、tp:/www.sae.org/technical/standards/AMS4120R AMS 4120R SAE AMS 4120R- 2 -2.1 SAE Publications: Available from SAE, 400 Commonwealth Drive, Warrendale, PA 15096-0001 or www.sae.org.AMS 2355 Quality Assurance Sampling and Testing, Aluminum Alloys and Magnesium Alloys, Wrought Products, Except Forging
10、Stock, and Rolled, Forged, or Flash Welded RingsMAM 2355 Quality Assurance Sampling and Testing, Aluminum Alloys and Magnesium Alloys, Wrought Products, Except Forging Stock, and Rolled, Forged, or Flash Welded Rings, Metric (SI) UnitsAMS 2772 Heat Treatment of Aluminum Alloy Raw MaterialsARP823 Min
11、imizing Stress-Corrosion Cracking in Wrought Heat-Treatable Aluminum Alloy ProductsAS1990 Aluminum Alloy Tempers2.2 ASTM Publications: Available from ASTM, 100 Barr Harbor Drive, West Conshohocken, PA 19428-2959 or www.astm.org.ASTM B 660 Packaging/Packing of Aluminum and Magnesium ProductsASTM B 66
12、6/666M Identification Marking of Aluminum and Magnesium Products2.3 ANSI Publications: Available from ANSI, 25 West 43rdStreet, New York, NY 10036-8002.ANSI H35.2 Dimensional Tolerances for Aluminum Mill ProductsANSI H35.2M Dimensional Tolerances for Aluminum Mill Products (Metric)AMS 4120R SAE AMS
13、4120R- 3 -3. TECHNICAL REQUIREMENTS: 3.1 Composition: Shall conform to the percentages by weight shown in Table 1, determined in accordance with AMS 2355 or MAM 2355.3.2 Condition: Shall be as follows:3.2.1 -T4 Temper: Solution heat treated in accordance with AMS 2772 and naturally aged (See AS1990)
14、. 3.2.1.1 If -T4 is ordered, -T351 temper may be supplied (See AS1990).3.2.1.2 -T351 Temper: Solution heat treated in accordance with AMS 2772, stress-relieved by stretching to produce a nominal permanent set of 1.5% but not less than 1% nor more than 3%, and naturally aged to the -T351 temper.3.2.1
15、.3 Bars and rods stress-relieved by stretching shall receive no further straightening operations after stretching unless specifically authorized by purchaser.3.3 Properties: The product shall conform to the following requirements, determined on the mill produced size in accordance with AMS 2355 or M
16、AM 2355:TABLE 1 - CompositionElement min maxSiliconIronCopperManganeseMagnesiumChromiumZincTitaniumOther Elements, eachOther Elements, totalAluminum-3.80.30 1.2-remainder0.500.504.90.91.80.100.250.150.050.15AMS 4120R SAE AMS 4120R- 4 -3.3.1 Tensile Properties: Shall be as shown in Table 2.TABLE 2A -
17、 Minimum Tensile Properties, Inch/Pound UnitsTemperNominal ThicknessInchesTensile StrengthksiYieldStrengthat 0.2%OffsetksiElongationin2 Inches or4D%T4 Up to 0.499, incl 62.0 45.0 (3.3.1.1) 100.500 to 4.50011. Properties listed for this full size increment are applicable to bar and rod. Properties li
18、sted are only applicable for square, rectangular, hexagonal or octagonal bar having a maximum thickness of 4.000 inches in nominal thickness and a maximum cross-sectional area of 36 square inches.62.0 42.0 (3.3.1.1) 104.501 to 6.50022. Applicable to rod only.62.0 40.0 106.501 to 8.000, incl(2)58.0 3
19、8.0 10T351 (rod dimensions and properties in SI units are shown as the approximate equivalents of the primary units and are presented only for information.8.3 Hardness should not be lower than 100HB/10/500 or 106HB/10/1000, determined in accordance with ASTM E 10. Hardness has been used to verify th
20、at product have been properly processed, but an out-of-specification hardness number is not always indicative of product with out-of-specification tensile properties. Further analysis, including material composition verification, heat treat process parameter review, and/or tensile property measureme
21、nt on product with out-of-specification hardness, may be necessary.8.4 Terms used in AMS are clarified in ARP1917.AMS 4120R SAE AMS 4120R- 7 -8.5 Purchase documents should specify not less than the following:AMS 4120RForm and size of product desiredQuantity of product desired.8.6 Similar Specifications: AMS-QQ-A-225/6, Temper T4 and Temper T351, is listed for information only and shall not be construed as an acceptable alternate unless all requirements of this AMS are met.8.7 Key Words: AMS 4120R, Al Alloy, 2024-T4, 2024-T351PREPARED UNDER THE JURISDICTION OF AMS COMMITTEE “D“
