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: +1 724-776-4970
4、 (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/AMS4401A AEROSPACEMATERIAL SPECIFICATIONAMS4401 REV. A Issued 2006-08 Revised 2011-11 Reaffirmed
5、2017-09 Superseding AMS4401 Aluminum Alloy Plate (7140-T7451) 6.6Zn - 1.8Cu - 2.0Mg - 0.10Zr Solution Heat Treated, Stress Relieved and Overaged (Composition similar to UNS A97140) RATIONALE AMS4401A has been reaffirmed to comply with the SAE Five-Year Review policy. 1. SCOPE1.1 Form This specificat
6、ion covers an aluminum alloy in the form of plate. 1.2 Application This product has been used typically for parts requiring a high level of mechanical properties and fracture toughness with good resistance to stress-corrosion cracking, but usage is not limited to such applications. 2. APPLICABLE DOC
7、UMENTSThe 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 referenced document has been
8、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 724-776-4970 (outside USA), www.sae.
9、org. AMS2355 Quality 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 AS1990 Aluminum Alloy Tempers 2.2 ASTM Publications Available from ASTM
10、 International, 100 Barr Harbor Drive, P.O. Box C700, West 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 645 Linear-Elastic Plane Strain Fracture Toughness Testing of Aluminum Alloys
11、 ASTM B 660 Packaging of Aluminum and Magnesium Products ASTM B 666/B 666M Identification Marking of Aluminum and Magnesium Products ASTM G 34 Exfoliation Corrosion Susceptibility in 2XXX and 7XXX Series Aluminum Alloys (EXCO Test) ASTM G 47 Determining Susceptibility to Stress-Corrosion Cracking of
12、 2XXX and 7XXX Aluminum Alloys Products 2.3 ANSI Publications Available from American National Standards Institute, 25 West 43rd Street, 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 Alumi
13、num Mill Products (Metric) 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 max Silicon - 0.10 Iron - 0.13 Copper 1.3 2.3 Manganese - 0.04 Magnesium 1.5 2.4 Chromium - 0.04
14、Zinc 6.2 7.0 Titanium - 0.06 Zirconium 0.05 0.12 Other Elements, each - 0.05 Other Elements, total - 0.15 Aluminum remainder SAE INTERNATIONAL AMS4401A Page 2 of 7_ 3.2 Condition Solution heat treated, stress relieved by stretching to produce a nominal permanent set of 1-1/2 to 3% and overaged to T7
15、451 (See AS1990). 3.2.1 Heat Treatment Heat treatment shall be in accordance with the requirements of AMS2772 and the following: - Solution heat treat at 890 F 10 (477 C 6), - Recommended aging practice: 250 F 10 (121 C 6) for 6 to 12 hours followed by 310 F 10 (154 C 6) for 20 to 30 hours to the T7
16、451 temper. 3.2.2 Plate shall receive no further straightening operations after stretching. 3.3 Properties 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 specified in Table 2. TABLE 2A - MINIM
17、UM TENSILE PROPERTIES, INCH/POUND UNITS Nominal Thickness Inches Specimen OrientationTensile Strength, ksi Yield Strength At 0.2% Offset ksi Elongation in 2 inches or 4D % 4.000 to 5.000, incl Longitudinal 71.0 66.0 9 Long-Transverse 73.0 65.0 5 Short-Transverse 69.0 60.0 3 5.001 to 6.000, incl Long
18、itudinal 71.0 66.0 8 Long-Transverse 72.0 65.0 4 Short Transverse 69.0 60.0 3 6.001 to 7.000, incl Longitudinal 71.0 65.0 7 Long-Transverse 72.0 64.0 4 Short Transverse 68.0 59.0 3 7.001 to 8.000, incl Longitudinal 70.0 65.0 6 Long-Transverse 71.0 63.0 4 Short Transverse 68.0 58.0 3 8.001 to 9.000,
19、incl Longitudinal 70.0 65.0 6 Long-Transverse 71.0 63.0 3 Short Transverse 67.0 58.0 9.001 to 10.000, incl Longitudinal 70.0 65.0 5 Long-Transverse 70.0 63.0 2 Short Transverse 67.0 58.0 SAE INTERNATIONAL AMS4401A Page 3 of 7_ TABLE 2B - MINIMUM TENSILE PROPERTIES, SI UNITS Nominal Thickness Millime
20、ters Specimen Orientation Tensile Strength MPa Yield Strength at 0.2% Offset MPa Elongation in 50.4 mm or 4D % 101.60 to 127.00, incl Longitudinal 490 455 9 Long-Transverse 503 448 5 Short Transverse 476 414 3 Over 127.00 to 152.40, incl Longitudinal 490 455 8 Long-Transverse 496 448 4 Short Transve
21、rse 476 414 3 Over 152.40 to 177.80, incl Longitudinal 490 448 7 Long-Transverse 496 441 4 Short Transverse 469 407 3 Over 177.80 to 203.20, incl Longitudinal 483 448 6 Long-Transverse 490 434 4 Short Transverse 469 400 3 Over 203.20 to 228.60, incl Longitudinal 483 448 6 Long-Transverse 490 434 Sho
22、rt Transverse 462 400 3 Over 228.60 to 254.00, incl Short Transverse 483 448 5 Long-Transverse 434 2 Short Transverse 462 400 3.3.2 Corrosion Resistance Resistance to stress-corrosion cracking and exfoliation corrosion shall be considered acceptable if the plate conforms to the requirements of 3.3.2
23、.1 and 3.3.2.2 3.3.2.1 Electrical Conductivity Shall be not lower than 38.0 % IACS (International Annealed Copper Standard) (22.0 MS/m), determined on the surface of the tensile coupon. 3.3.2.2 Plate not meeting the requirements of 3.3.2.1 shall be given additional precipitation heat treatment or re
24、heat treated. After such treatment, if all specified property requirements are met, the plate is acceptable. 3.3.3 Exfoliation Corrosion Test As a part of periodic or surveillance testing, specimens shall not exhibit exfoliation corrosion greater than that illustrated by Photo B, Figure 2 of ASTM G
25、34. 3.3.4 Stress-Corrosion Cracking Test When specified (See 8.4), specimens tested in accordance with ASTM G 47, shall show no evidence of stress corrosion cracking when stressed in the short-transverse direction at 35 ksi (241 MPa). 3.3.5 Fracture Toughness When specified (See 8.4), specimens test
26、ed in accordance with ASTM B 645, shall meet the requirements for KIcspecified in Table 3. For plate 4.001 and greater L-T and T-L shall be centered at T/4 plane. For S-L test direction, the test specimen shall be centered at T/2. Test specimen(s) orientation requirements shall be specified by purch
27、aser. SAE INTERNATIONAL AMS4401A Page 4 of 7_ TABLE 3 - MINIMUM FRACTURE TOUGHNESS PARAMETERS Nominal Thickness Inches Nominal Thickness Millimeters Specimen Orientation KIcksi inch KIcMPa m 4.001 - 5.000 101.60 to 127.00, incl L-T 29 32 T-L 24 26 S-L 23 25 5.001 - 6.000 Over 127.00 to 152.40, incl
28、L-T 26 29 T-L 23 25 S-L 22 24 6.001 - 7.000 Over 152.40 to 177.80, incl L-T 24 26 T-L 21 23 S-L 22 24 7.001 - 8.000 Over 177.80 to 203.20, incl L-T 22 24 T-L 19 21 S-L 22 24 8.001 - 9.000 Over 203.20 to 228.60, incl L-T 22 24 T-L 19 21 S-L 20 22 9.001 - 10.000 Over 228.60 to 254.00, incl L-T 22 24 T
29、-L 19 21 S-L 20 22 3.4 Quality Plate, 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 Each plate shall be ultrasonically inspected in accordance with ASTM B 594 and shall mee
30、t the requirements of 3.4.1.1 or 3.4.1.2 as applicable. 3.4.1.1 Plates weighing 2000 pounds (907 kg) and under shall meet the requirements for ultrasonic class A for plate 4.001 to 10.000 inches (101.60 to 203.20 mm) in nominal thickness. 3.4.1.2 The ultrasonic class for plates weighing over 2000 po
31、unds (907 kg) or over 8.000 inches (203.20 mm) in nominal thickness shall be agreed upon by purchaser and vendor. 3.5 Tolerances Shall conform to all 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 al
32、l samples 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. SAE INTERNATIONAL AMS4401A Page 5 of 7_ 4.2 C
33、lassification of Tests 4.2.1 Acceptance Tests Composition (3.1), short transverse, long-transverse and longitudinal tensile properties (3.3.1), corrosion resistance (3.3.2), ultrasonic inspection (3.4.1), dimensional tolerances (3.5) and when specified, stress corrosion cracking (3.3.4) and fracture
34、 toughness (3.3.5) are acceptance tests and, except for composition, shall be conducted on each lot. 4.2.2 Periodic Tests Exfoliation corrosion testing (3.3.3) is a periodic test and shall be performed at a frequency selected by the vendor, unless, frequency of testing is specified by purchaser. 4.3
35、 Sampling and Testing Shall be in accordance with AMS2355 and the following. 4.3.1 Tensile specimens shall be taken with axis of specimens parallel to each applicable grain flow direction specified in Table 2. 4.4 Reports The vendor of the product shall furnish with each shipment a report stating th
36、at the product conforms to the composition, tolerances and ultrasonic inspection; and showing the numerical results of tests on each inspection lot to determine conformance to the other acceptance test requirements and to the periodic tests, if performed. This report shall include the purchase order
37、 number, inspection lot number(s), AMS4401A, size and quantity. The report shall also identify the producer, 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 6
38、66/B 666M. 5.2 Packaging The product shall be prepared for shipment in accordance 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 vendo
39、r 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 AMS4401A Page 6 of 7_ 8. NOTES 8.1 A change bar
40、 (l) 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 the document, including techn
41、ical 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. Dimensions and properties in
42、 SI units and the Celsius temperatures are shown as approximate equivalents of the primary units and are presented only for information. 8.4 Purchase documents should specify not less than the following: AMS4401A Size of plate desired Quantity of plate desired Whether stress corrosion testing or fracture toughness testing is required. PREPARED BY AMS COMMITTEE “D” SAE INTERNATIONAL AMS4401A Page 7 of 7_
