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 ther
2、efrom, 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
3、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: 877-606-7323 (inside USA and Canada) Tel: +1 724-776-49
4、70 (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/AMS4121J AEROSPACE MATERIAL SPECIFICATION AMS4121 REV. JIssued 1946-11 Reaffirmed 2007-11 Revi
5、sed 2017-01Superseding AMS4121H Aluminum Alloy Bars, Rods, and Wire, Rolled, Drawn, or Cold Finished 4.5Cu - 0.85Si - 0.80Mn - 0.50Mg (2014-T6, -T651) Solution and Precipitation Heat Treated (Composition similar to UNS A92014) RATIONALE AMS4121J revises, Condition (3.2), Properties (3.3), Acceptance
6、 Tests (4.2.1), Reports (4.4.1), Packaging (5.2), and is an update which allows AMS QQ-A-225/4 to be stabilized. 1. SCOPE 1.1 Form This specification covers an aluminum alloy in the form of bars, rods, and wire. 1.1.1 This specification covers rounds 8 inches (203 mm) and under in specified diameter
7、; square, hexagonal, and octagonal bars 4 inches (102 mm) and under across flats; and rectangular bar with a nominal thickness of 4 inches (102 mm) and under and a maximum cross-sectional area of 36 in2(232 cm2). 1.2 Application These products have been used typically for parts requiring high streng
8、th where limited formability is acceptable but usage is not limited to such 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. SAE INTERNATIONAL AMS4121J Pa
9、ge 2 of 5 2. APPLICABLE DOCUMENTS The issue 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 r
10、eferenced document has been cancelled and no 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 +1 724-7
11、76-4970 (outside USA), www.sae.org. AMS2355 Quality Assurance, Sampling and Testing, Aluminum Alloys and Magnesium Alloys, Wrought Products, (Except Forging Stock), and Rolled, Forged, or Flash Welded Rings AMS2772 Heat Treatment of Aluminum Alloy Raw Materials ARP823 Minimizing Stress-Corrosion Cra
12、cking in Wrought Heat-Treatable Aluminum Alloy Products ARP1917 Clarification of Terms Used in Aerospace Metals Specifications 2.2 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 B660 P
13、ackaging/Packing of Aluminum and Magnesium Products ASTM B666/B666M Identification Marking of Aluminum and Magnesium Products 2.3 ANSI Accredited Publications Copies of these documents are available online at http:/webstore.ansi.org/. ANSI H35.1/H35.1M Alloy and Temper Designation Systems for Alumin
14、um ANSI H35.2/H35.2M Dimensional Tolerances for Aluminum Mill Products 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 MaxSilicon 0.50 1.2 Iron - 0.7Copper 3.9 5.0Manganese
15、 0.40 1.2Magnesium 0.20 0.8Chromium - 0.10Zinc - 0.25Titanium - 0.15Other Elements, each - 0.05 Other Elements, total Aluminum - remainder 0.15 SAE INTERNATIONAL AMS4121J Page 3 of 5 3.2 Condition Rolled, drawn, or cold finished, as ordered, and solution and precipitation heat treated to the T6 or T
16、651 Temper (see ANSI H35.1/H351M) in accordance with AMS2772. When T6 temper is ordered, -T651 temper may be supplied. 3.3 Properties Rods 8 inches (203 mm) and under in nominal diameter; squares, hexagons, and octagons 4 inches (102 mm) and under across flats; and rectangles with a nominal thicknes
17、s of 4 inches (102 mm) and under and a maximum cross-sectional area of 36 in2(232 cm2), shall, except as specified in 3.3.1.1 conform to the requirements, shown in Table 2, determined in accordance with AMS2355. 3.3.1 T6 and T651 Temper Tensile Properties Shall be as shown in Table 2, except as spec
18、ified in 3.3.1.1. Table 2 T6 and T651 temper, minimum tensile properties (see 8.4) Property Value Tensile Strength 65.0 ksi (448 MPa) Yield Strength at 0.2% Offset 55.0 ksi (379 MPa) Elongation in 4D 8% 3.3.1.1 Yield strength and elongation requirements do not apply to product under 0.125 inch (3.18
19、 mm) in nominal diameter or distance between parallel sides. 3.3.2 Mechanical property requirements for product outside of the range covered by 1.1.1 shall be agreed upon between purchaser and producer. 3.4 Quality The product, as received by purchaser, shall be uniform in quality and condition, sou
20、nd, and free from foreign materials and from imperfections detrimental to usage of the product. 3.5 Tolerances Shall conform to all applicable requirements of ANSI H35.2 or ANSI H35.2M. 4. QUALITY ASSURANCE PROVISIONS 4.1 Responsibility for Inspection The vendor of the product shall supply all sampl
21、es 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 product conforms to specified requirements. 4.2 Classification of Tests 4.2.1 Acceptance Tests C
22、omposition (3.1), tensile properties (3.3.1), and tolerances (3.5) are acceptance tests and except for composition, shall be performed on each lot. 4.3 Sampling and Testing Shall be in accordance with AMS2355. SAE INTERNATIONAL AMS4121J Page 4 of 5 4.4 Reports The vendor of product shall furnish wit
23、h each shipment a report stating that the product conforms to the composition and tolerances, and showing the numerical results of tests on each inspection lot to determine conformance to the other acceptance test requirements. This report shall include the purchase order number, lot number, AMS4121
24、J, form and size or part number, and quantity. The report shall also identify the producer, the product form, and the size of the mill product. 4.4.1 When the product size is outside the range covered by 3.3, the report shall contain a statement to that effect. 4.5 Resampling and Retesting Shall be
25、in accordance with AMS2355. 5. PREPARATION FOR DELIVERY 5.1 Identification Shall be in accordance with ASTM B666/B666M. 5.2 Packaging 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,
26、 and transportation of the product to ensure carrier acceptance and safe delivery. 5.2.1 Protective Treatment When specified, the product shall be oiled, prior to shipment, with a light corrosion-inhibiting oil. 6. ACKNOWLEDGMENT A vendor shall mention this specification number and its revision lett
27、er 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. 8. NOTES 8.1 Revision Indicator A change bar (l) located in the left margin is for the convenience of th
28、e 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 the document, including technical revisions. Change bars and (R) are not used in original
29、 publications, nor in documents that contain editorial changes only. 8.2 Hardness of the T6 or T651 product should not be lower than 125 HBS/10/500 or 130 HBS/10/1000, determined in accordance with ASTM E10. Hardness has been used to verify that product is properly processed, but an “out-of-specific
30、ation hardness number” is not always indicative of product with “out-of-specification tensile strength”. Further analysis including material composition verification, heat treat process parameter review, and/or tensile property measurement on product with out-of-specification hardness may be necessa
31、ry. SAE INTERNATIONAL AMS4121J Page 5 of 5 8.3 Terms used in AMS are clarified in ARP1917. 8.4 Tensile properties for the T651 temper, shown in Table 3, have been taken directly from AMS QQ-A-225/4 and have not been statistically substantiated in accordance with the SAE Aerospace Materials Systems G
32、roup policy. 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 only for information. 8.6 Purchase documents should specify not less than the following: AMS4121J Form and size of product required Quantity of product required Property and acceptance requirements from the cognizant engineering organization applicable to sizes outside of the range listed in 3.3. PREPARED BY AMS COMMITTEE “D”
