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: +1 724-776-497
4、0 (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/AMS4296C AEROSPACE MATERIAL SPECIFICATION AMS4296 REV. C Issued 1997-09 Reaffirmed 2012-02 Revi
5、sed 2017-10 Superseding AMS4296B Aluminum Alloy, Alclad Sheet and Plate 4.3Cu - 1.4Mg - 0.60Mn (Alclad 2524-T3) Solution Heat Treated and Cold Worked (Composition similar to UNS A82524) RATIONALE AMS4296C revises Condition (3.2), Properties (3.3), Reports (4.4) and Identification (5.1.1), and is a F
6、ive-Year Review and update of this specification. 1. SCOPE 1.1 Form This specification covers an aluminum alloy in the form of sheet and plate 0.032 to 0.310 inch, incl (0.81 to 7.87 mm, incl) in thickness, clad on both sides (see 8.4). 1.2 Application These products have been used typically for for
7、med structural aircraft parts requiring improved resistance to fatigue crack growth and high toughness with strength similar to Alclad 2024-T3, 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-corro
8、sion 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 forms a part of this specification to the extent specified herein. The supplier may work to a subsequent revision of a docu
9、ment 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 that document shall apply. 2.1 SAE Publications Available from SAE International, 400 Commonwealth Drive, Warrendale, PA 150
10、96-0001, Tel: 877-606-7323 (inside USA and Canada) or +1 724-776-4970 (outside USA), www.sae.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
11、Alloy Raw Materials SAE INTERNATIONAL AMS4296C Page 2 of 6 ARP823 Minimizing Stress-Corrosion Cracking in Wrought Heat-Treatable Aluminum Alloy Products ARP1917 Clarification of Terms Used in Aerospace Metals Specifications 2.2 ANSI Accredited Publications Copies of these documents are available onl
12、ine at http:/webstore.ansi.org/. ANSI H35.1/ H35.1M Standard Alloy and Temper Designation System For Aluminum 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, 1
13、00 Barr Harbor Drive, P.O. Box C700, West Conshohocken, PA 19428-2959, Tel: 610-832-9585, www.astm.org. ASTM B660 Packaging/Packing of Aluminum and Magnesium Products ASTM B666/B666M Identification Marking of Aluminum and Magnesium Products ASTM E647 Measurement of Fatigue Crack Growth Rates 3. TECH
14、NICAL REQUIREMENTS 3.1 Composition Shall conform to the percentages by weight shown in Tables 1 and 2, determined in accordance with AMS2355. Table 1 - Composition, core (2524) Element Min Max Silicon - 0.06 Iron - 0.12 Copper 4.0 4.5 Manganese 0.45 0.7 Magnesium 1.2 1.6 Chromium - 0.05 Zinc - 0.15
15、Titanium - 0.10 Other Elements, each - 0.05 Other Elements, total - 0.15 Aluminum remainder Table 2 - Composition, cladding (1230) Element Min Max Silicon + Iron - 0.7 Copper - 0.10 Manganese - 0.05 Magnesium - 0.05 Zinc - 0.10 Titanium - 0.03 Vanadium - 0.05 Other Elements, each - 0.03 Aluminum, by
16、 difference 99.30 - SAE INTERNATIONAL AMS4296C Page 3 of 6 3.2 Condition Solution heat treated in accordance with AMS2772 and cold worked to T3 temper (see ANSI H35.1/H35.1M). 3.3 Properties Product shall conform to the following requirements, determined in accordance with AMS2355 on the mill produc
17、t: 3.3.1 Long-Transverse Tensile Properties Shall be as shown in Table 3. Table 3 Table 3A - Minimum tensile properties, inch/pound units Nominal Thickness Inches Tensile Strength ksi Yield Strength at 0.2% Offset ksi Elongation in 2 inches or 4D % 0.032 to 0.062 59.0 39.0 15 0.063 to 0.128 61.0 40.
18、0 15 0.129 to 0.310 62.0 40.0 15 Table 3B - Minimum tensile properties, SI units Nominal Thickness Millimeters Tensile Strength ksi Yield Strength at 0.2% Offset ksi Elongation in 2 inches or 4D % 0.81 to 1.57 407 269 15 1.60 to 3.25 421 276 15 3.28 to 7.87 427 276 15 3.3.2 Fatigue Crack Growth Rate
19、 (FCGR) Shall be not higher than the rate (da/dN) shown in Table 4, determined in the T-L orientation in accordance with ASTM E647, and using the center-cracked tension M(T) specimen, a K of 30 ksiinch (33 MPam ), a K gradient of zero, a stress ratio (R) of plus 0.1, and a testing frequency between
20、2 to 10 Hz. Table 4 - Maximum fatigue crack growth rate Nominal Thickness Inch Nominal Thickness Millimeters da/dN inch/cycle da/dN mm/cycle 0.032 to 0.310, incl 0.81 to 7.87, incl 1.2 x 10-43.05 x 10-3SAE INTERNATIONAL AMS4296C Page 4 of 6 3.3.3 Mechanical property requirements for product outside
21、of the range covered by 1.1 shall be agreed upon between purchaser and producer. 3.3.4 Bending Product shall withstand, without cracking, bending at room temperature through an angle of 180 around a diameter equal to the bend factor shown in Table 5 times the nominal thickness of the product with ax
22、is of bend parallel to the direction of rolling. Table 5 - Bending parameters Nominal Thickness Inch Nominal Thickness Millimeters Bend Factor 0.032 to 0.040 0.81 to 1.02 4 0.041 to 0.128 1.04 to 3.25 5 0.129 to 0.249 3.28 to 6.32 8 0.250 to 0.310 6.35 to 7.87 10 3.3.5 Minimum Average Cladding Thick
23、ness Shall be as shown in Table 6. Table 6 - Minimum average cladding thickness Nominal Thickness Inch Nominal Thickness Millimeters Average Cladding Thickness per Side, % of Total Thickness, Minimum 0.032 to 0.062 0.81 to 1.57 4.0 0.063 to 0.310 1.60 to 7.87 2.0 3.4 Quality Product, as received by
24、purchaser, shall be uniform in quality and condition, sound, 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 In
25、spection The producer of the product shall supply all samples for producers 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 requi
26、rements. 4.2 Classification of Tests 4.2.1 Acceptance Tests Composition (3.1), tensile properties (3.3.1), fatigue-crack growth rate (3.3.2), and tolerances (3.5) are acceptance tests and, except for composition, shall be performed on each inspection lot. SAE INTERNATIONAL AMS4296C Page 5 of 6 4.2.2
27、 Periodic Tests Bending (3.3.4) and cladding thickness (3.3.5) are periodic tests and shall be performed at a frequency selected by the producer unless frequency of testing is specified by purchaser. 4.3 Sampling and Testing Shall be in accordance with AMS2355. One chemical composition analysis shal
28、l be determined for each ingot casting drop and one fatigue crack growth test shall be performed on each inspection lot. 4.4 Reports The producer of the product shall furnish with each shipment a report stating that the product conforms to the composition and tolerances and showing the numerical res
29、ults of tests for tensile properties and fatigue crack growth of each inspection lot and stating that the product conforms to the other technical requirements. This report shall include the purchase order number, inspection lot number, AMS4296C, size, and quantity. The report shall also identify the
30、 producer, the product form, and the size of the mill product. 4.4.1 When the product size is outside the range covered by 1.1, the report shall contain a statement to that effect. 4.4.2 When material produced to this specification is beyond the sizes allowed in the scope of tables, or other excepti
31、ons are taken to the technical requirements listed in Section 3 (see 5.1.1), the report shall contain a statement “This material is certified as AMS4296C(EXC) because of the following exceptions.” and the specific exceptions shall be listed. 4.5 Resampling and Retesting Shall be in accordance with A
32、MS2355. 5. PREPARATION FOR DELIVERY 5.1 Identification Shall be in accordance with ASTM B666/B666M. 5.1.1 When technical exceptions are taken (see 4.4.2), the material shall be marked with AMS4296(EXC). 5.2 Packaging 5.2.1 Product shall be protected from damage during storage and shipment by a metho
33、d determined by producer unless specified by purchaser. Examples of typical protective methods include but are not limited to interleaving with paper or oiling of the surface. 5.2.2 Product shall be prepared for shipment in accordance with ASTM B660 and in compliance with applicable rules and regula
34、tions pertaining to the handling, packaging, and transportation of the product to ensure carrier acceptance and safe delivery. 6. ACKNOWLEDGMENT A producer shall mention this specification number and its revision letter in all quotations and when acknowledging purchase orders. SAE INTERNATIONAL AMS4
35、296C Page 6 of 6 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 (I) located in the left margin is for the convenience of the user in locating areas where technical rev
36、isions, 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 documents that contain
37、 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 SI units and the Celsius temperatures are shown as the approximate equivalents of the primary units and
38、 are presented only for information. 8.4 Purchase documents should specify not less than the following: AMS4296C Size of sheet or plate desired Property and acceptance requirements from the cognizant engineering organization applicable to sizes outside the range listed in 1.1 Quantity of sheet or plate desired. PREPARED BY AMS COMMITTEE “D”
