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 reaffirmed, revised, or cancelled. SAE invites your written comments and suggestions. Copyright 2012 SAE International All rights reserved. No part of this publication m
3、ay 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 U
4、SA) 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/AMS4124E AEROSPACE MATERIAL SPECIFICATION AMS4124 REV. E Issued 1967-04 Revised 2012-09 Super
5、seding AMS4124D Aluminum Alloy, Rolled or Cold Finished Bars, Rods, and Wire 5.6Zn - 2.5Mg - 1.6Cu - 0.23Cr (7075-T73, T7351) Solution Heat Treated, Stress Relieved by Stretching, and Overaged (Composition similar to UNS A97075) RATIONALE AMS4124E adds coverage for T73 temper (Title, 3.2.1, 3.2.2) t
6、o facilitate cancellation of AMS-QQ-A-225/9. 1. SCOPE 1.1 Form This specification covers an aluminum alloy in the form of rolled or cold finished bars, rods, and wire. 1.2 Application These products have been used typically for machined parts subject to excessive warpage during machining due to resi
7、dual stresses and for parts requiring high strength and resistance to stress-corrosion cracking and whose fabrication does not involve forming or welding, but usage is not limited to such applications. 2. APPLICABLE DOCUMENTS The issue of the following documents in effect on the date of the purchase
8、 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 superseding document has been specified, the last published iss
9、ue 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 724-776-4970 (outside USA), www.sae.org. AMS2355 Quality Assurance, Sampling and Testing, Aluminum Alloys and Magnes
10、ium Alloy Wrought Products (Except Forging Stock), and Rolled, Forged, or Flash Welded Rings AMS2772 Heat Treatment of Aluminum Alloy Raw Materials AS1990 Aluminum Alloy Tempers SAE AMS4124E Page 2 of 6 2.2 ASTM Publications Available from ASTM International, 100 Barr Harbor Drive, P.O. Box C700, We
11、st Conshohocken, PA 19428-2959, Tel: 610-832-9585, www.astm.org. ASTM B 594 Ultrasonic Inspection of Aluminum-Alloy Wrought Products for Aerospace Applications ASTM B 660 Packaging/Packing of Aluminum and Magnesium Products ASTM B 666/B 666M Identification of Aluminum and Magnesium Alloy Products 2.
12、3 ANSI Publications Available from American National Standards Institute, 25 West 43rdStreet, New York, NY 10036-8002, Tel: 212-642-4900, www.ansi.org. ANSI H35.2 Dimensional Tolerances for Aluminum Mill Products ANSI H35.2M Dimensional Tolerances for Aluminum Mill Products (Metric) 3. TECHNICAL REQ
13、UIREMENTS 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 - 0.40 Iron - 0.50 Copper 1.2 2.0 Manganese - 0.30 Magnesium 2.1 2.9 Chromium 0.18 0.28 Zinc 5.1 6.1 Titanium - 0.20 Titanium +
14、Zirconium - 0.25 Other Elements, each - 0.05 Other Elements, total - 0.15 Aluminum remainder 3.2 Condition 3.2.1 Bar and Rod Rolled or cold finished, followed by solution heat treating and subsequent processing as in 3.2.1.1 or 3.2.1.2. 3.2.1.1 T73: Precipitation hardened to the T73 temper (See AS19
15、90). 3.2.1.2 T7351: Stress-relieved by stretching to produce a nominal permanent set of 1-1/2%, but not less than 1% nor more than 3%, then precipitation hardened to the T7351 temper (See AS1990). 3.2.1.3 When T73 product is specified, T7351 product may be supplied unless specifically prohibited by
16、the purchaser. 3.2.1.4 All heat treatments shall be performed in accordance with AMS2772. SAE AMS4124E Page 3 of 6 3.2.1.5 Product shall receive no further straightening operations after stretching, unless specifically authorized. 3.2.2 Wire Rolled or cold finished, as ordered, and solution and prec
17、ipitation heat treated to the T73 temper in accordance with AMS2772 (See AS1990). 3.3 Properties The product shall conform to the following requirements, determined on the mill produced size in accordance with AMS2355: 3.3.1 Tensile Properties Shall be as shown in Table 2 for product 4.000 inches (1
18、01.60 mm) and under in nominal diameter, and squares, hexagons, octagons, and rectangles 4.000 inches (101.60 mm) and under in least nominal dimension. TABLE 2 - MINIMUM TENSILE PROPERTIES Property Value Tensile Strength 68.0 ksi (469 MPa) Yield Strength at 0.2% Offset 56.0 ksi (386 MPa) Elongation
19、in 2 Inches (50.8 mm) or 4D 10% 3.3.1.1 Shall be as shown in Table 3 for product over 4.000 to 5.000 inches (over 101.60 to 127.00 mm) in nominal diameter and squares, hexagons, octagons, and rectangles over 4.000 to 5.000 inches (101.60 to 127.00 mm) in least nominal dimension. TABLE 3 - MINIMUM TE
20、NSILE PROPERTIES Property Value Tensile Strength 66.0 ksi (455 MPa) Yield Strength at 0.2% Offset 55.0 ksi (379 MPa) Elongation in 2 Inches (50.8 mm) or 4D 8% 3.3.1.2 Shall be as shown in Table 4 for product rounds 5.000 to 6.000 inches (127.00 to 152.40 mm) in least nominal dimension. TABLE 4 - MIN
21、IMUM TENSILE PROPERTIES Property Value Tensile Strength 64.0 ksi (441 MPa) Yield Strength at 0.2% Offset 52.0 ksi (359 MPa) Elongation in 2 Inches (50.8 mm) or 4D 8% 3.3.2 Conductivity Shall be as follows: 3.3.2.1 If the conductivity is 40% IACS (International Annealed Copper Standard) (23.2 MS/m) o
22、r higher and tensile properties meet specified requirements, the product is acceptable. SAE AMS4124E Page 4 of 6 3.3.2.2 If the conductivity is 38.0 to 39.9% IACS (22.0 to 23.1 MS/m), if the tensile properties meet specified requirements, and if the yield strength does not exceed the specified minim
23、um by more than 11.9 ksi (82 MPa), the product is acceptable. 3.3.2.3 If the conductivity is between 38.0 to 39.9% IACS (22.0 to 23.1 MS/m) and the yield strength exceeds the specified minimum value by more than 11.9 ksi (82 MPa), the product shall be given additional overaging heat treatment as in
24、3.2. If, after such treatment, the product meets the requirements of 3.3.1 and 3.3.2.1 or 3.3.2.2, the product is acceptable. 3.3.2.4 If the conductivity is below 38% IACS, (22.0 MS/m) the product is not acceptable and must be reprocessed regardless of tensile property level. 3.3.3 Stress-Corrosion
25、Cracking Resistance Specimens, cut from product 0.750 inch (19.05 mm) and over in nominal thickness, shall show no evidence of stress-corrosion cracking when stressed in the short-transverse (perpendicular to grain flow) direction to 75% of the specified minimum longitudinal (parallel to grain flow)
26、 yield strength. 3.4 Quality The product, as received by purchaser, shall be uniform in quality and condition, sound, and free from foreign materials and from imperfections detrimental to usage of the product. 3.4.1 When specified, the product shall be subjected to ultrasonic inspection in accordanc
27、e with ASTM B 594 and shall meet Class A, unless otherwise specified. 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 samples for vendors tests and s
28、hall be responsible for the performance of all required tests. Purchaser reserves the right 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 Composition (3.1), tensile properties (3.
29、3.1), conductivity (3.3.2), ultrasonic inspection (3.4.1) when specified, and tolerances (3.5) are acceptance tests and, except for composition, shall be performed on each lot. 4.2.2 Periodic Tests Stress-corrosion cracking resistance (3.3.3) is a periodic test and shall be performed at a frequency
30、selected by the vendor unless frequency of testing is specified by purchaser. 4.3 Sampling and Testing Shall be in accordance with AMS2355. SAE AMS4124E Page 5 of 6 4.4 Reports The vendor of product shall furnish with each shipment a report stating that the product conforms to the composition, ultra
31、sonic inspection when specified, 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, inspection lot number, AMS4124E, size and quantity. The report sh
32、all also identify the producer, the product form, and the mill produced size. 4.5 Resampling and Retesting Shall be in accordance with AMS2355. 5. PREPARATION FOR DELIVERY 5.1 Identification Shall be in accordance with ASTM B 666/B 666M. 5.2 Packaging The product shall be prepared for shipment in ac
33、cordance with ASTM B 660 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 A vendor shall mention this specification number and its revision letter in all
34、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 A change bar (l) located in the left margin is for the convenience of the user in locating areas wher
35、e 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 publications nor in document
36、s that contain editorial changes only. 8.2 Hardness should be not lower than 125 HB/10/500 or 130 HB/10/1000, determined in accordance with ASTM E 10. Hardness has been used to verify that product is properly processed, but an out-of-range hardness number is not always indicative of product with out
37、-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-range hardness may be necessary. 8.3 Terms used in AMS are clarified in ARP1917. 8.4 Dimensions and prop
38、erties in inch/pound units are primary; dimensions and properties in SI units are shown as the approximate equivalents of the primary units and are presented only for information. SAE AMS4124E Page 6 of 6 8.5 Purchase documents should specify not less than the following: AMS4124E Product form and size of product desired Quantity of product desired. 8.6 Similar Specifications AMS-QQ-A-225/9, Temper T7351, is listed for information only and shall not be construed as an acceptable alternate unless all requirements of this AMS are met. PREPARED BY AMS COMMITTEE “D”
