1、AEROSPACE MATERIAL SPECIFICATIONAMS4351Issued 2014-09Aluminum Alloy, Plate (7065-T7651)7.7Zn - 2.1Cu - 1.65Mg - 0.10ZrSolution Heat Treated, Stress-Relieved, and OveragedRATIONALEAMS4351 is a new specification for 7065-T7651 aluminum plate.1. SCOPE1.1 FormThis specification covers an aluminum alloy
2、in the form of plate.1.1.1 This specification covers plate from 1.000 to 6.000 inches (25.40 to152.40 mm) in thickness (See 8.4).1.2 ApplicationThis product may be used in aerospace applications requiring high strength and good fracture toughness, good resistance to stress-corrosion cracking and to
3、exfoliation corrosion, but usage is not limited to such applications.2. APPLICABLE DOCUMENTSThe 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
4、 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 PublicationsAvailable from SAE International, 400 Commonwealth Drive, Warrendale, PA 15096-000
5、1, 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 Magnesium Alloys, Wrought Products (Except Forging Stock) and Rolled, Forged, or Flash Welded RingsAMS2772 Heat Treatment of Aluminum Alloy Raw
6、MaterialAS1990 Aluminum Alloy Tempers_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 a
7、ny 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 revised, reaffirmed, stabilized, or cancelled. SAE invites your written comments and suggestions.Copyright 2014 SAE InternationalAll r
8、ights 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 otherwise, without the prior written permission of SAE.TO PLACE A DOCUMENT ORDER: Tel: 877-606-7323 (inside USA
9、 and Canada)Tel: +1 724-776-4970 (outside USA)Fax: 724-776-0790Email: CustomerServicesae.orgSAE WEB ADDRESS: http:/www.sae.orgSAE values your input. To provide feedbackon this Technical Report, please visithttp:/www.sae.org/technical/standards/AMS4351SAE INTERNATIONAL AMS4351 Page 2 of 82.2 ASTM Pub
10、licationsAvailable from ASTM 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 ProductsASTM B 645 Linear-Elastic Plane-Strain Fracture Toughness Testing of Aluminum AlloysA
11、STM B 660 Packaging/Packing of Aluminum and Magnesium ProductsASTM B 666/B 666M Identification Marking of Aluminum and Magnesium ProductsASTM E 399 Linear-Elastic Plane-Strain Fracture Toughness KIC of Metallic MaterialsASTM E 466 Conducting Force Controlled Constant Amplitude Axial Fatigue Tests of
12、 Metallic MaterialsASTM G 34 Exfoliation Corrosion Susceptibility in 2xxx and 7xxx Series Aluminum Alloys (EXCO Test)ASTM G 47 Determining Susceptibility to Stress-Corrosion Cracking of 2XXX and 7XXX Aluminum Alloy Products2.3 ANSI PublicationsAvailable from American National Standards Institute, 25
13、 West 43rd Street, New York, NY 10036, Tel: 212-642-4900, www.ansi.org.ANSI H35.2 Dimensional Tolerances for Aluminum Mill ProductsANSI H35.2M Dimensional Tolerances for Aluminum Mill Products (Metric)3. TECHNICAL REQUIREMENTS3.1 CompositionShall conform to the percentages by weight shown in Table 1
14、, determined in accordance with AMS2355.In case there is a discrepancy in the values listed in Table 1 with those listed in the “International Alloy Designations andChemical Composition Limits for Wrought Aluminum and Wrought Aluminum Alloys”(known as the “Teal Sheets”), the composition limits regis
15、tered with the Aluminum Association and published in the “Teal Sheets” shall be the controlling composition.TABLE 1 - COMPOSITIONElement min maxSilicon - 0.06Iron - 0.08Copper 1.9 2.3Manganese - 0.04Magnesium 1.5 1.8Chromium - 0.04Zinc 7.1 8.3Titanium - 0.06Zirconium 0.05 0.15Other Elements, each -
16、0.05Other Elements, total - 0.15Aluminum remainderSAE INTERNATIONAL AMS4351 Page 3 of 83.2 ConditionSolution heat treated, stretched to produce a permanent set of not less than 1% nor more than 3%, and precipitation heat treated to the -T7651 temper (See AS1990). Solution and precipitation heat trea
17、tment shall be performed in accordance with AMS2772 as applicable to 7XXX alloys. The actual practices are considered proprietary.Plate shall receive no further straightening operations after stretching.3.3 PropertiesProduct shall conform to the following requirements, determined in accordance with
18、AMS2355 on the mill produced size.Mechanical property requirements for product outside of the range covered by Tables 2 and 3 shall be agreed upon between purchaser and producer.3.3.1 Tensile Properties shall be as shown in Table 2A and 2B.TABLE 2A - MINIMUM TENSILE PROPERTIES, INCH/POUND UNITSNomin
19、al ThicknessInch Grain DirectionTensileStrengthksiYield Strengthat 0.2% OffsetksiElongation in2 Inches or 4D%1.000 1.500, inclL 80.0 76.0 10LT 80.0 73.0 91.501 2.000, inclL 79.0 75.0 10LT 80.0 73.0 9ST 78.0 68.0 62.001 3.000, inclL 78.0 74.0 9LT 79.0 72.0 8ST 77.0 68.0 43.001 4.000, inclL 78.0 74.0
20、9LT 78.0 71.0 6ST 77.0 67.0 34.001 5.000, inclL 77.0 74.0 8LT 78.0 71.0 5ST 76.0 67.0 35.001 6.000, inclL 76.0 74.0 7LT 77.0 71.0 5ST 75.0 67.0 3SAE INTERNATIONAL AMS4351 Page 4 of 8TABLE 2B - MINIMUM TENSILE PROPERTIES, SI UNITSNominal ThicknessMillimeters Grain DirectionTensileStrengthMPaYield Str
21、engthat 0.2% OffsetMPaElongation in50.8 mm or 4D%25.40 38.10, inclL 552 524 10LT 552 503 938.12 50.80, inclL 545 517 10LT 552 503 9ST 538 469 650.82 76.20, inclL 538 510 9LT 545 496 8ST 531 469 476.22 101.60, inclL 538 510 9LT 538 490 6ST 531 462 3101.62 127.00, inclL 531 510 8LT 538 490 5ST 524 462
22、 3127.02- 152.40, inclL 524 510 7LT 531 490 5ST 517 462 33.3.2 Electrical ConductivityShall be not lower than 39.0 % IACS (International Annealed Copper Standard) (22.6 MS/m).3.3.3 Exfoliation Corrosion Resistance Specimens cut from plate shall not exhibit exfoliation corrosion at the T/2 plane grea
23、ter than that illustrated by Photograph B, Figure 2, of ASTM G 34.3.3.4 Stress Corrosion CrackingWhen specified, specimens from plate shall be tested in accordance with ASTM G 47 and shall show no evidence of stress corrosion cracking when stressed in the short transverse direction to 25 ksi (172 MP
24、a).3.3.5 Fracture Toughness:Plane strain fracture toughness shall be tested in accordance with ASTM E 399 and ASTM B 645. A valid KIC meeting the requirements of ASTM E399, or a KQ “usable for lot release” in accordance with ASTM B 645 shall meet or exceed the values shown in Table 3A and 3B.TABLE 3
25、A MINIMUM KIC AND KQ “USABLE FOR LOT RELEASE” FRACTURE TOUGHNESS INCH/POUND UNITSNominal Thickness inch L-T orientation ksiinch T-L orientation ksiinch S-L orientation ksiinch1.000 1.500, incl 35 27 -1.501 2.000, incl 32 27 -2.001 3.000, incl 29 25 233.001 4.000, incl 25 23 224.001 5.000, incl 24 21
26、 215.001 6.000, incl 23 20 20SAE INTERNATIONAL AMS4351 Page 5 of 8TABLE 3B MINIMUM KIC AND KQ “USABLE FOR LOT RELEASE” FRACTURE TOUGHNESS SI UNITSNominal Thickness mm L-T orientation MPam T-L orientation MPam S-L orientation MPam25.40 38.10, incl 38 30 -38.12 50.80, incl 35 30 -50.82 76.20, incl 32
27、27 2576.22 101.60, incl 27 25 24101.62 - 127.00, incl 26 23 23127.02 - 152.40, incl 25 22 223.3.6 Fatigue ResistanceWhen specified, 3.000 to 6.000-inch (76.20 to 152.40-mm) thick plate shall be tested in accordance with ASTM E466.When tested at a stress ratio of R=0.1 at a maximum stress of 35.0 ksi
28、 (241 MPa), the fatigue life shall meet the requirements of Table 4. TABLE 4 - FATIGUE LIFE REQUIREMENTSMinimum cycles per test 90 000 cyclesLot Log Average of 4 tests, min 120 000 cyclesRunout 200 000 cycles3.4 QualityProducts, as received by purchaser, shall be uniform in quality and condition, so
29、und and free from foreign materials and from conditions detrimental to usage of the plate. Any detrimental conditions found during the customers manufacturing process are subject to rejection.3.4.1 Each plate shall be subjected to ultrasonic inspection in accordance with ASTM B 594 and shall meet ul
30、trasonic Class A requirements, as described in ASTM B 594.3.5 TolerancesShall conform to all applicable requirements of ANSI H35.2 or ANSI H35.2M.4. QUALITY ASSURANCE PROVISIONS4.1 Responsibility for InspectionThe vendor of the products shall supply all samples for vendors tests and shall be respons
31、ible 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 products conform to specified requirements.4.2 Classification of Tests4.2.1 Acceptance TestsComposition (3.1), tensile properties (3.3.1)
32、, electrical conductivity (3.3.2), tolerances (3.5), ultrasonic inspection (3.4.1), fracture toughness (3.3.5), stress corrosion cracking (when specified) (3.3.4), and fatigue (when specified) (3.3.6), are acceptance tests and, except for composition, shall be performed on each inspection lot.4.2.2
33、Periodic TestsExfoliation corrosion resistance (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.SAE INTERNATIONAL AMS4351 Page 6 of 84.3 Sampling and TestingShall be in accordance with AMS2355 and the follo
34、wing.4.3.1 Specimens for tensile testing shall be taken and tested in both the longitudinal and long-transverse directions.Specimens for tensile testing shall also be taken and tested in the short-transverse direction for plate 1.501 inches (38.12 mm) and thicker.4.3.2 Electrical conductivity shall
35、be determined on the mill finished surface of the tensile sample from which the tensile test specimen is taken.4.3.3 Specimens for fracture toughness testing shall be taken and tested in both the L-T and T-L orientations. Specimens for fracture toughness testing shall also be taken and tested in the
36、 S-L orientation for plate 2.001 inches (50.82 mm) and thicker. The test specimens shall meet the following requirements:4.3.3.1 For L-T and T-L test orientations of plate 1.000 to 2.000 inches (25.40 to 50.80 mm) in nominal thickness, use specimens having a width (W) of 4.0 inches (102 mm) and a th
37、ickness (B) of the full plate thickness.4.3.3.2 For L-T and T-L test orientations of plate 2.001 to 6.000 inches (50.82 to 152.40 mm) in nominal thickness, use specimens having a width (W) of 4.0 inches (102 mm) and a thickness (B) of 2.0 inches (50.8 mm).4.3.3.3 For plate 2.001 to 4.000 inches (50.
38、82 to 101.60 mm) in nominal thickness, the L-T and T-L specimens shall be centered at T/2.4.3.3.4 For plate 4.001 to 6.000 inches (101.62 to 152.40 mm) in nominal thickness, the L-T and T-L specimens shall be centered at T/4.4.3.3.5 For the S-L test orientation of plate 2.001 to 2.599 inches (50.80
39、to 66.01 mm) in nominal thickness, use specimens having a width (W) of 1.5 inches (38.1 mm) and a thickness (B) of 0.75 inches (19.0 mm).4.3.3.6 For the S-L test orientation of plate 2.600 to 3.199 inches (66.04 to 81.25 mm) in nominal thickness, use specimens having a width (W) of 2.0 inches (50.8
40、mm) and a thickness (B) of 1.0 inches (25.4 mm).4.3.3.7 For the S-L test orientation of plate 3.200 to 3.799 inches (81.28 to 96.49 mm) in nominal thickness, use specimens having a width (W) of 2.5 inches (63.5 mm) and a thickness (B) of 1.25 inches (31.7 mm).4.3.3.8 For the S-L test orientation of
41、plate 3.800 to 5.000 inches (96.52 to 127.00 mm) in nominal thickness, use specimens having a width (W) of 3.0 inches (76.2 mm) and a thickness (B) of 1.5 inches (38.1 mm).4.3.3.9 For the S-L test orientation of plate 5.001 to 6.000 inches (127.02 to 152.40 mm) in nominal thickness, use specimens ha
42、ving a width (W) of 4.0 inches (101.6 mm) and a thickness (B) of 2.0 inches (50.8 mm). 4.3.3.10 For plate 2.001 to 6.000 inches (50.82 to 152.40 mm) in nominal thickness, the S-L specimens shall be centered at T/2.4.3.4 Two specimens for fatigue testing shall be taken from each end of the parent pla
43、te in the long transverse grain direction. These specimens are to be removed from the T/2, W/2 location. Fatigue testing shall be conducted in air at 70 F + 5 (21 C + 3) with a relative humidity of 30 to 50% using a frequency of 10 to 50 Hz. The test specimens shall meet the following requirements:4
44、.3.4.1 Fatigue samples shall be machined to ASTM E 466, Figure 1. The specimen shall have a 0.500 inch (12.70 mm) gage diameter, a 2.00-inch (50.80 mm) gage section, and 3.0-inch (76.20 mm) fillet radius. The grip section may be varied to fit different grip configurations, but should have no less th
45、an a 1.0-inch (25.4 mm) diameter.SAE INTERNATIONAL AMS4351 Page 7 of 84.3.4.2 Fatigue samples shall be longitudinally sanded to produce a fine satin finish of 16 Ra microinch (0.4 micrometer) or better. A medium grit emery paper shall be used to remove transverse machining marks, followed by progres
46、sively finer emery papers. Light oil may be used as a lubricant. The use of an automated polishing system is highly recommended. An equivalent procedure can be used provided it can be demonstrated that it gives equivalent results to those obtained using the above method. Specimens shall be degreased
47、 and cleaned prior to testing.4.4 ReportsThe vendor of product shall furnish with each shipment a report stating that the product conforms to the composition, tensile properties, ultrasonic inspection, tolerances, electrical conductivity, fracture toughness, stress corrosion cracking testing (when s
48、pecified), fatigue (when specified), and showing the numerical results of tests on each inspection lot to determine conformance to the other acceptance test requirements and stating that the final product conforms to the other technical requirements. This report shall include the purchase order numb
49、er, inspection lot number, AMS4351, section identification number, mill product form, size and quantity.4.4.1 When the product size is outside the range covered by Tables 2 and 3, the report shall contain a statement to that effect.4.5 Resampling and RetestingShall be in accordance with AMS2355.5. PREPARATION FOR DELIVERY5.1 IdentificationShall be in accordance wi
