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1、 AEROSPACE MATERIAL SPECIFICATION Aluminum Alloy, Plate (2098-O) 3.5Cu - 1.1Li - 0.50Mg - 0.40Ag - 0.11Zr Annealed (Composition similar to UNS A92098) SAE Technical Standards Board Rules provide that: “This report is published by SAE to advance the state of technical and engineering sciences. The us
2、e of this report is entirely voluntary, and its applicability and suitability for any particular use, including any patent infringement arising therefrom, 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,
3、 or cancelled. SAE invites your written comments and suggestions. Copyright 2003 SAE International All rights reserved. No part of this publication may be reproduced, stored in a retrieval system or transmitted, in any form or by any means, electronic, mechanical, photocopying, recording, or otherwi
4、se, without the prior written permission of SAE. TO PLACE A DOCUMENT ORDER: Tel: 877-606-7323 (inside USA and Canada) Tel: 724-776-4970 (outside USA) Fax: 724-776-0790 Email: custsvcsae.org SAE WEB ADDRESS: http:/www.sae.org AMS 4327 x Issued DEC 2003 1. SCOPE: 1.1 Form: This specification covers an
5、 aluminum alloy in the form of plate. 1.2 Application: This product has typically been used in aerospace applications where low density is needed in combination with high strength, high toughness, high damage tolerance, and improved stiffness, but usage is not limited to such applications. 2. APPLIC
6、ABLE 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 referenced document
7、 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, 400 Commonwealth Drive, Warrendale, PA 16096-0001 or www.sae.org. AMS 2355 Quality Assurance Sampling and Testing, Aluminum Alloys and
8、Magnesium Alloys, Wrought Products, Except Forging Stock, and Rolled, Forged, or Flash Welded Rings AMS 2772 Heat Treatment of Aluminum Alloy Raw Materials AS1990 Aluminum Alloy Tempers AMS 4327 SAE AMS 4327 - 2 - 2.2 ASTM Publications Available from ASTM, 100 Barr Harbor Drive, West Conshohocken, P
9、A 19428-2959 or www.astm.org. ASTM B 594 Ultrasonic Inspection of Aluminum-Alloy Wrought Products for Aerospace Applications ASTM B 646 Fracture Toughness Testing of Aluminum Alloys ASTM B 660 Packaging/Packing of Aluminum and Magnesium Products ASTM B 666 / B 66M Identification Marking of Aluminum
10、Products ASTM E 561 R-Curve Determination ASTM G 47 Determining Susceptibility to Stress-Corrosion Cracking of High- Strength Aluminum Alloy Products 2.3 ANSI Publications: Available from ANSI, 25 West 43rd Street, New York, NY 10036 or www.ansi.org. ANSI H35.2 Dimensional Tolerances for Aluminum Mi
11、ll Products ANSI H35.2M Dimensional Tolerances for Aluminum Mill Products (Metric) 3. TECHNICAL REQUIREMENTS: 3.1 Composition: Shall conform to the percentages by weight shown in Table 1, determined in accordance with AMS 2355. Table 1 Composition Element min max Silicon - 0.12 Iron - 0.15 Copper 3.
12、2 3.8 Manganese - 0.35 Magnesium 0.25 0.8 Zinc - 0.35 Titanium - 0.1 Silver 0.25 0.6 Lithium 0.8 1.3 Zirconium 0.04 0.18 Other Elements, each - 0.05 Other Elements, total - 0.15 Aluminum remainder AMS 4327 SAE AMS 4327 - 3 - 3.2 Condition: 3.2.1 -0 Condition (See AS1990): Annealed by heating, holdin
13、g at heat for a time commensurate with section thickness and slow cooling (see paragraph 8.2). May receive minor stretching to improve flatness. 3.2.2 T82P Temper: Solution heat treated in accordance with AMS 2772, stretched to produce a permanent set of at least 1.5% but not more than 4.0%, and pre
14、cipitation heat treated to T82P temper in accordance with AMS 2772. 3.3 Properties: Plate shall conform to the following requirements, determined on the mill produced size, in accordance with AMS 2355 and as specified herein. 3.3.1 As Received (O Temper): The material shall meet the O temper require
15、ments shown in Table 2 in the as-supplied condition. 3.3.2 Response to Heat Treat (T82P). The material shall also be capable of meeting the T82 property requirements shown in Tables 2 and 3 after proper solution heat treatment, stretching, and artificial aging per 3.2.2. 3.3.2.1 Tensile Properties:
16、Shall be as specified in Table 2. Table 2A Minimum Tensile Properties, Inch/Pound Units Temper Thickness, Inclusive (Inches) Grain Direction Ultimate Tensile Strength (ksi) Yield Strength 0.2% Offset (ksi) % Elongation in 2 Inches O 0.250 - 0.300 LT 35 max 25 max 11 T82P 0.250 - 0.300 L 73.0 68.0 6
17、LT 73.0 68.0 6 Table 2B Minimum Tensile Properties, SI Units Temper Thickness, Inclusive (mm) Grain Direction Ultimate Tensile Strength (MPa) Yield Strength 0.2% Offset (MPa) % Elongation in 50.8 mm O 6.35 - 7.62 LT 241 max 172 max 11 T82P 6.35 - 7.62 L 503 476 6 LT 503 476 6 AMS 4327 SAE AMS 4327 -
18、 4 - 3.3.2.2 Stress-Corrosion Resistance: Demonstration of capability on mill produced plate in the - T82P temper (see 4.3.1), tested in accordance with ASTM G 47, shall show no evidence of stress corrosion failure when stressed in the long-transverse direction at 35.0 ksi (241 MPa) and exposed for
19、30 days. 3.3.2.3 Fracture Toughness: Demonstration of capability on mill produced plate in the -T82P temper (see 4.3.1), tested in accordance with ASTM E 561 and ASTM B 646, shall meet the requirements for Kc specified in Table 3. The specimen type shall be M(T) and have a width of 16 inches. The sp
20、ecimen shall be fatigue pre-cracked in accordance with ASTM E 561. The initial crack length (i.e., machine notch plus fatigue pre-crack) shall have a total initial crack length (2ao) of 4 inches. Table 3 A Minimum Fracture Toughness, Inch/Pound Units Temper Thickness, Inclusive (Inches) Specimen Ori
21、entation Required Minimum Plane Strain Fracture Toughness, Kc (ksi-in 1/2) T82P 0.250 to 0.300 L-T 120 T-L 80 Table 3 B Minimum Fracture Toughness, SI Units Temper Thickness, Inclusive (mm) Specimen Orientation Required Minimum Plane Strain Fracture Toughness, Kc (MPa-m 1/2) T82P 6.35 to 7.62 L-T 13
22、2 T-L 88 3.4 Quality: Plate, as received by the purchaser, shall be uniform in quality and condition, sound, and free from foreign materials and from imperfections detrimental to usage of the plate. Light scratches and discoloration or streaking shall not be reason for rejection. Product with a detr
23、imental condition found during the customers manufacturing process is subject to rejection. 3.4.1 Plate shall be ultrasonically inspected at an intermediate gauge of at least 2 inches in accordance with ASTM B 594 and shall meet the requirements of Class B. 3.5 Tolerances: Shall conform to all appli
24、cable requirements of ANSI H35.2 or H35.2M. AMS 4327 SAE AMS 4327 - 5 - 4. QUALITY ASSURANCE PROVISIONS: 4.1 Responsibility for Inspection: The vendor of plate shall supply all samples for vendors tests and shall be responsible for the performance of all required tests. Purchaser reserves the right
25、to sample and to perform any confirmatory testing deemed necessary to ensure that the plate conforms to specified requirements. 4.2 Classification of Tests: 4.2.1 Acceptance Tests: Composition (3.1) shall be performed in accordance with AMS 2355. Tensile properties (3.3.2.1), fracture toughness (3.3
26、.2.3), and ultrasonic inspection (3.4.1) shall be performed on each lot. 4.2.2 Periodic Tests: Stress-corrosion resistance (3.3.2.2) is a periodic test and shall be performed on the first three lots and thereafter at a frequency selected by the vendor unless frequency of testing is specified by purc
27、haser. 4.3 Sampling and Testing: 4.3.1 One plate from each lot shall be processed to T82P temper and sampled by removing material for one set of two tensile specimens from the center width location on one end. The set of two tensile specimens shall consist of one longitudinal and one long transverse
28、. Specimen thickness location shall be as specified in AMS 2355. 4.3.2 Fracture toughness specimens shall be taken from each parent plate at the center width location on the end from which the set of two tensile specimens is removed. 4.3.3 Ultrasonic inspection shall be performed on the entirety of
29、each parent (intermediate thickness) plate (3.4.1). 4.4 Reports: The vendor shall furnish with each shipment a report stating that the plate conforms to the chemical composition and tolerances, ultrasonic inspection requirements, and all other technical requirements. The report shall show the numeri
30、cal results of tests on each inspection lot to prove conformance to acceptance test requirements. The report shall include the producer, purchase order number, product form, inspection lot number, AMS 4327, size, and quantity. 4.5 Resampling and Retesting: Shall be in accordance with AMS 2355. AMS 4
31、327 SAE AMS 4327 - 6 - 5. PREPARATION FOR DELIVERY: 5.1 Identification: Shall be in accordance with ASTM B 666/B 666M. 5.2 Packaging: Plate 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
32、transportation of the plate to ensure carrier acceptance and safe delivery. 6. ACKNOWLEDGMENT: A vendor shall mention this specification number in all quotations and when acknowledging purchase orders. 7. REJECTIONS: Plate not conforming to this specification, or to modifications authorized by purch
33、aser, will be subject to rejections. 8. NOTES: 8.1 Annealing treatment is proprietary. 8.2 Dimensions and properties in inch/pound units and Fahrenheit temperatures are primary; dimensions and properties in SI units and Celsius temperatures are shown as the approximate equivalents of the primary uni
34、ts and are presented only for information. 8.3 Terms used in AMS are clarified in ARP1917 and defined as follows: 8.3.1 Lot: Material of the same mill form, alloy, temper, section and size traceable to one melt and one annealing furnace load. 8.3.2 Parent Plate: A plate that has been processed to fi
35、nal temper as a single unit. The parent plate may subsequently be cut into two or more smaller plates to provide the required width and length. 8.4 Purchase documents should specify not less than the following: AMS 4327 Size of plate desired Quantity of plate desired. 8.5 Key Words: Aluminum alloy, plate, solution heat treated, aging, 2098-T82P. PREPARED UNDER JURISDICTION OF AMS COMMITTEE “D“