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/AMS4477A AEROSPACE MATERIAL SPECIFICATION AMS4477 REV. A Issued 2014-05 Revised 2017-11 Supers
5、eding AMS4477 Aluminum Alloy, Coiled Sheet 4.4Cu - 1.5Mg - 0.60Mn (2024-T4) Solution Treated (Composition similar to UNS A82024) RATIONALE AMS4477A revises Properties (3.3), Classification of Tests (4.2), Reports (4.4), and Identification (5.1.1), and is a Five-Year Review and update of this specifi
6、cation. 1. SCOPE 1.1 Form This specification covers an aluminum alloy in the form of coiled sheet 0.010 to 0.249 inch, incl (0.25 to 6.32 mm, incl) in thickness, supplied in the T4 temper (see 8.5). 1.2 Application These products have been used typically for medium strength parts requiring formabili
7、ty and whose fabrication does not involve welding, 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. 2. APPLICABLE DOCUMEN
8、TS 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 referenced document has been can
9、celled 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 +1 724-776-4970 (outside USA), www.sae.
10、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 SAE INTERNATIONAL AMS4477A Page 2 of 6 ARP823 Minimizing Stress-Corrosion
11、 Cracking in Wrought Heat-Treatable Aluminum Alloy Products ARP1917 Clarification of Terms Used in Aerospace Metals Specifications 2.2 ANSI Publications Copies of these documents are available online at http:/webstore.ansi.org/. ANSI H35.1/ H35.1M Standard Alloy and Temper Designation System For Alu
12、minum ANSI H35.2 Dimensional Tolerances for Aluminum Mill Products ANSI H35.2M Dimensional Tolerances for Aluminum Mill Products (Metric) 2.3 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.
13、ASTM B660 Packaging/Packing of Aluminum and Magnesium Products ASTM B666/B666M Identification of Aluminum and Magnesium Alloy Products 3. TECHNICAL REQUIREMENTS 3.1 Composition Shall conform to the percentages by weight as shown in Table 1, determined in accordance with AMS2355. Table 1 - Compositio
14、n Element Min Max Silicon - 0.50 Iron - 0.50 Copper 3.8 4.9 Manganese 0.30 0.9 Magnesium 1.2 1.8 Chromium - 0.10 Zinc - 0.25 Titanium - 0.15 Other Elements, each - 0.05 Other Elements, total - 0.15 Aluminum remainder 3.2 Condition The product shall be supplied in the following condition: 3.2.1 Coile
15、d sheet Solution heat treated and naturally aged to the T4 temper in accordance with AMS2772 (see ANSI H35.1/H35.1MS1990). 3.3 Properties The product shall conform to the following requirements, determined in accordance with AMS2355 on the mill produced size. SAE INTERNATIONAL AMS4477A Page 3 of 6 3
16、.3.1 Tensile Properties (T4 Temper) Shall be as shown in Table 2 (see 8.4). Table 2 Table 2A - Tensile properties, inch/pound units Temper Nominal Thickness, inches Tensile Strength ksi Minimum Yield Strength at 0.2% Offset ksi Minimum Elongation in 2 Inches or 4D % -T4 0.010 thru 0.020 0.021 thru 0
17、.249 62.0 62.0 40.0 40.0 12 15 Table 2B - Tensile properties, SI units Temper Nominal Thickness, mm Tensile Strength MPa Minimum Yield Strength at 0.2% Offset MPa Minimum Elongation in 2 Inches or 4D % -T4 0.25 thru 0.51 0.53 thru 6.32 427 427 276 276 12 15 3.3.2 Response to Temper Conversion (-T62)
18、 When specified, product in the T4 temper, after precipitation heat treatment to the T62 temper (see ANSI H35.1/H35.1M) in accordance with AMS2772, shall have the properties shown in Table 3 (see 8.4). Table 3A - Tensile properties, inch/pound units Temper Nominal Thickness, inches Tensile Strength
19、ksi Minimum Yield Strength at 0.2% Offset ksi Minimum Elongation in 2 Inches or 4D % -T62 0.010 thru 0.249 64.0 50.0 5 Table 3B - Tensile properties, SI units Temper Nominal Thickness, mm Tensile Strength MPa Minimum Yield Strength at 0.2% Offset MPa Minimum Elongation in 2 Inches or 4D % -T62 0.25
20、thru 6.32 441 345 5 SAE INTERNATIONAL AMS4477A Page 4 of 6 3.3.4 Response to Temper Conversion (-T72) When specified, product in the T4 temper, after precipitation heat treatment to the T72 temper (see ANSI H35.1/H35.1M) in accordance with AMS2772, shall have the properties shown in Table 4 (see 8.4
21、). Table 4 Table 4A - Tensile properties, inch/pound units Temper Nominal Thickness, inches Tensile Strength ksi Minimum Yield Strength at 0.2% Offset ksi Minimum Elongation in 2 Inches or 4D % -T72 0.010 thru 0.249 60.0 46.0 5 Table 4B - Tensile properties, SI units Temper Nominal Thickness, mm Ten
22、sile Strength MPa Minimum Yield Strength at 0.2% Offset MPa Minimum Elongation in 2 Inches or 4D % -T72 0.25 thru 6.32 414 317 5 3.3.5 Mechanical property requirements for product outside the range covered by 1.1 shall be agreed upon between purchaser and producer. 3.4 Bending Product as received by
23、 purchaser shall withstand, without cracking, bending at room temperature through an angle of 180 degrees around a diameter equal to the bend factor shown in Table 4 times the nominal thickness of the product with axis of bend parallel to the direction of rolling. Table 4 Bending parameters Nominal
24、Thickness, Inch Nominal Thickness, Millimeters Bend Factor 0.010 to 0.020, incl 0.25 to 0.51, incl 4 Over 0.020 to 0.051, incl Over 0.51 to 1.30, incl 5 Over 0.051 to 0.128, incl Over 1.30 to 3.25, incl 6 Over 0.128 to 0.249, incl Over 3.25 to 6.32, incl 8 3.5 Quality The product, as received by pur
25、chaser, shall be uniform in quality and condition, sound, and free from foreign materials and from imperfections detrimental to usage of the product. 3.6 Tolerances Shall conform to the applicable requirements of ANSI H35.2/H35.2M. 4. QUALITY ASSURANCE PROVISIONS 4.1 Responsibility for Inspection Th
26、e vendor shall supply all 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 AMS
27、4477A Page 5 of 6 4.2 Classification of Tests 4.2.1 Acceptance Tests Composition (3.1), tensile properties (3.3.1), tolerances (3.6), and when specified, the tensile properties after temper conversion to T62 (3.3.2) and T72 (3.3.3) are acceptance tests and, except for composition, shall be performed
28、 on each lot. 4.2.2 Periodic Tests Bending (3.4) 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 Sampling and Testing Shall be in accordance with AMS2355. 4.4 Reports The vendor of the product shall furnish wi
29、th each shipment a report stating that the product conforms to the composition and tolerances, and showing numerical results of tests for the acceptance test requirements. This report shall include the purchase order number, lot number, AMS4477A, size, and quantity. The report shall also identify th
30、e producer, the product form and the size of the mill product. 4.4.1 When material produced to this specification, is beyond the sizes allowed in the scope or tables or other exceptions are taken to the technical requirements listed in Section 3 (see 5.1.1), the report shall contain a statement “Thi
31、s material is certified as AMS4477A(EXC) because of the following exceptions.” and the specific exceptions shall be listed. 4.5 Resampling and Retesting Shall be in accordance with ASTM B666/B666M. 5. PREPARATION FOR DELIVERY 5.1 Identification Shall be in accordance with ASTM B666/B666M. 5.1.1 When
32、 technical exceptions are taken (see 4.4.2), the material shall be marked with AMS4477(EXC). 5.2 Packaging 5.2.1 Product shall be protected from damage during storage and shipment by a method determined by vendor unless specified by purchaser. Examples of typical protective methods include, but are
33、not limited to interleaving with paper or oiling of the surface. 5.2.2 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, and transportation of the product to ensure carrier acceptance
34、 and safe delivery. 6. ACKNOWLEDGMENT The vendor shall mention this specification number in all quotations and when acknowledging purchase orders. 7. REJECTIONS Production not conforming to this specification, or to modifications authorized by purchaser, will be subject to rejection. SAE INTERNATION
35、AL AMS4477A Page 6 of 6 8. NOTES 8.1 Revision Indicator A change bar (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
36、title indicates a complete revision of the document, including technical 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 ARP 1917, 8.3 Dimensions and properties in inch/pound units and
37、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. 8.4 The tensile properties in Tables 2, 3, and 4 were taken directly from QQ-A-250/4E Amen
38、dment 2 (AMS QQ-A-250/4A) and have not been independently verified by AMS statistical procedures. 8.5 Purchase documents should specify not less than the following: AMS4477A Product form and size of product desired Property and acceptance requirements from the cognizant engineering organization applicable to sizes outside the range listed in 1.1 Response to temper conversion for T62 temper (if required (see 3.3.2) Response to temper conversion for T72 temper (if required) (see 3.3.3) Quantity of product desired PREPARED BY AMS COMMITTEE “D”
