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/AMS4337B AEROSPACE MATERIAL SPECIFICATION AMS4337 REV. B Issued 1998-11 Reaffirmed 2011-11 Revi
5、sed 2017-10 Superseding AMS4337A Aluminum Alloy, Extruded Profiles (7055-T77511) 8.0Zn - 2.3Cu - 2.0Mg - 0.16Zr Solution Heat Treated, Stress Relieved, and Overaged (Composition similar to UNS A97055) RATIONALE AMS4337B revises Properties (3.4), Classification of Tests (4.2), Reports (4.4) and Ident
6、ification (5.1.1), and is a Five-Year Review and update of this specification. 1. SCOPE 1.1 Form This specification covers an aluminum alloy in the form of extruded profiles (shapes) 0.500 to 1.500 inch, incl (12.7 to 38.1 mm, incl) in nominal thickness, and having a maximum cross-sectional area of
7、20 in2 (129 cm2) and a maximum circle size of 10 inches (254 mm) (see 8.7). 1.2 Application This product has been used typically for structural applications requiring a combination of high mechanical properties and good resistance to exfoliation corrosion, but usage is not limited to such applicatio
8、ns. 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 document unless a specific document issue is specified. When the referen
9、ced 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 15096-0001, Tel: 877-606-7323 (inside USA and Canada) or +1 724-776-497
10、0 (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 Alloy Raw Materials SAE INTERNATIONAL AMS4337B Page 2 of 6 2.2 ASTM
11、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. ASTM B594 Ultrasonic Inspection of Aluminum-Alloy Wrought Products for Aerospace Applications ASTM B660 Packaging/Packing of Aluminum and Magnesium
12、 Products ASTM G34 Exfoliation Corrosion Susceptibility in 2xxx and 7xxx Series Aluminum Alloys (EXCO Test) ASTM B666/B666M Identification Marking of Aluminum Products 2.3 ANSI Accredited Publications Copies of these documents are available online at http:/webstore.ansi.org/. ANSI H35.1/H35.1M Stand
13、ard 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) 3. TECHNICAL REQUIREMENTS 3.1 Composition Shall conform to the percentages by weight shown in Table 1, determined i
14、n accordance with AMS2355. Table 1 - Composition Element Min Max Silicon - 0.10 Iron - 0.15 Copper 2.0 2.6 Manganese - 0.05 Magnesium 1.8 2.3 Chromium - 0.04 Zinc 7.6 8.4 Titanium - 0.06 Zirconium 0.08 0.25 Other Elements, each - 0.05 Other Elements, total - 0.15 Aluminum remainder 3.2 Condition Sol
15、ution heat treated, stress-relieved by stretching to produce a nominal permanent set of 1.5%, but not less than 1% or more than 3%, and overaged. 3.2.1 Product shall be supplied with an as-extruded surface finish; light polishing to remove minor surface imperfections is permissible provided such imp
16、erfections can be removed within the dimensional tolerances. 3.2.2 Product may receive minor straightening, after stretching, of an amount necessary to meet the requirements of 3.6. SAE INTERNATIONAL AMS4337B Page 3 of 6 3.3 Heat Treatment Shall be in accordance with AMS2772 and as follows: 3.3.1 Ov
17、eraging Heat Treatment Overaging shall be performed at a specific temperature and time, as required to meet the requirements of 3.4 (see 8.2). 3.4 Properties Product shall conform to the following requirements, determined in accordance with AMS2355 on the mill produced size. 3.4.1 Tensile Properties
18、 Longitudinal and long transverse tensile properties of extrusions, with a maximum cross-sectional area of 20 in2 (129 cm2) and a maximum circle size of 10 inches (254 mm), shall be as specified in Table 2A or 2B. Table 2 Table 2A - Minimum tensile properties, inch/pound units Nominal Thickness Inch
19、 Specimen Orientation Tensile Strength ksi Yield Strength at 0.2% Offset ksi Elongation in 2 inches or 4D % 0.500 to 1.500, incl Longitudinal Long-Transverse 94.0 88.0 90.0 84.0 9 5 Table 2B - Minimum tensile properties, SI units Nominal Thickness Millimeters Specimen Orientation Tensile Strength MP
20、a Yield Strength at 0.2% Offset MPa Elongation in 50.8 mm or 4D % 12.7 to 38.1, incl Longitudinal Long-Transverse 648 607 621 579 9 5 3.4.2 Compressive Yield Strength Longitudinal compressive yield strength, when specified, shall be 92.0 Ksi (634 MPa), minimum. 3.4.3 Mechanical property requirements
21、 for product outside of the range covered by 1.1 shall be agreed upon between purchaser and producer. 3.4.4 Electrical Conductivity Shall be not lower than 35.5% IACS (International Annealed Copper Standard) (20.6 MS/m), determined on the surface of the test coupon prior to turning. 3.4.5 Exfoliatio
22、n Corrosion Resistance Specimens cut from extrusions and tested per ASTM G34 shall not exhibit exfoliation corrosion at a T/10 plane greater than that illustrated by Photograph B, Figure 2, of ASTM G34. 3.4.6 Residual Strength The net area residual strength of the product (with sufficient size to ac
23、commodate the test specimen), when tested in ambient air, shall be not lower than 45 ksi (310 MPa). SAE INTERNATIONAL AMS4337B Page 4 of 6 3.4.6.1 Test Specimen Shall be a 4 inch (102 mm) wide by 0.25 inch (6.4-mm) thick center cracked panel machined from the mid-thickness of the extruded leg. The l
24、ength of the specimen shall be such that the central 11.0 inches (279 mm) are exposed between test machine grips. The center notch shall consist of a 0.1875 inch (4.8 mm) drilled central hole, a 0.75 inch (19.0 mm) long center cut 0.062 inch (1.6 mm) wide, and extension cuts on both ends of approxim
25、ately 0.125 inch (3.2 mm) length and maximum width of 0.012 inch (0.3 mm). The total length of the fabricated center notch should be approximately 1.0 inch (25 mm). 3.4.6.2 Test Procedure Measure panel width, thickness and total crack length to the nearest 0.001 inch (0.025 mm); fatigue precrack fro
26、m a 1.0 to 1.1 inch (25 to 28 mm) long center notch to a total crack length of 1.25 inches (31.8 mm), using constant amplitude cycling (f=5 Hz, R=+0.06) and a maximum gross area stress of 15.3 ksi (106 MPa); ramp load to fracture at a rate of 1.0 gross ksi per second (6.9 MPa/s); determine the total
27、 non-precracked cross-sectional area after fracture; calculate the peak net area stress at fracture (Residual Strength) and record to 0.1 ksi (0.7 MPa). 3.5 Quality Products, as received by purchaser, shall be uniform in quality and condition, sound, and free from foreign materials and from imperfec
28、tions detrimental to usage of the extrusions. 3.5.1 When specified, each extruded profile (shape) shall be subjected to ultrasonic inspection in accordance with ASTM B594 and shall meet the following requirements: 3.5.1.1 Each extruded profile (shape) weighing 600 pounds (272 kg) and under and havin
29、g a maximum width-to-thickness ratio of 10:1 shall meet ultrasonic class B requirements, as described in ASTM B594. 3.5.1.2 The ultrasonic class for all tubing and for other extruded profiles weighing over 600 pounds (272 kg), or in excess of 10:1 maximum width-to-thickness ratio shall be as agreed
30、upon by purchaser and vendor. 3.6 Tolerances Shall conform to all applicable requirements of ANSI H35.2 or ANSI H35.2(M). 4. QUALITY ASSURANCE PROVISIONS 4.1 Responsibility for Inspection The vendor of the products shall supply all samples for vendors tests and shall be responsible for the performan
31、ce 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 the specified requirements. 4.2 Classification of Tests 4.2.1 Acceptance Tests Composition (3.1), tensile properties (3.4.1), electrical co
32、nductivity (3.4.4), tolerances (3.6), and when specified, compressive yield strength (3.4.2) and ultrasonic soundness (3.5.1) are acceptance tests and, except for composition, shall be performed on each lot. 4.2.2 Periodic Tests Tests for exfoliation-corrosion resistance (3.4.5) and residual strengt
33、h (3.4.6) are periodic tests and shall be performed at a frequency selected by the vendor unless frequency of testing is specified by purchaser. SAE INTERNATIONAL AMS4337B Page 5 of 6 4.3 Sampling and Testing Shall be in accordance with AMS2355. 4.4 Reports The vendor of product shall furnish with e
34、ach shipment a report stating that the product conforms to the composition, tolerances and ultrasonic inspection (when required); 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 when perfor
35、med. This report shall include the purchase order number, inspection lot number(s), AMS4337B, size and quantity. The report shall also identify the producer, the mill product form, and the mill produced size. 4.4.1 When the product size is outside the range covered by 1.1, the report shall contain a
36、 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 exceptions 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 AMS4337B(
37、EXC) because of the following exceptions.” and the specific exceptions shall be listed. 4.5 Resampling and Retesting Shall be in accordance with AMS2355. 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),
38、 the material shall be marked with AMS4337(EXC). 5.2 Packaging Products shall be prepared for shipment in accordance with ASTM B660. 6. ACKNOWLEDGMENT A vendor shall mention this specification number and its revision letter in all quotations and when acknowledging purchase orders. 7. REJECTIONS Prod
39、ucts 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 revisions, not editorial changes, hav
40、e 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 editorial changes only. 8.2 Actua
41、l overaging heat treatments are proprietary. 8.3 Extrusions should be visually inspected for the presence of intergranular attack (IGA). If detected, surface machining or milling is recommended to remove surface IGA which may occur during fabricating. SAE INTERNATIONAL AMS4337B Page 6 of 6 8.4 Alloy
42、-temper definitions for aluminum products are presented in ANSI H35.1/H351M. Designation systems are presented in ANSI H35.1 and ANSI H35.1(M). 8.5 Terms used in AMS are clarified in ARP1917. 8.6 Dimensions and properties in inch/pound units and the Fahrenheit temperatures are primary; dimensions an
43、d properties in SI units and the Celsius temperatures are shown as the approximate equivalents of the primary units and are presented only for information. 8.7 Purchase documents should specify not less than the following: AMS4337B Form and size or section identification number of extrusions desired
44、 Quantity of extrusions desired Property and acceptance requirements from the cognizant engineering organization applicable to sizes outside the range listed in 1.1 Ultrasonic inspection of extruded profiles (shapes) (if required) (see 3.5.1) Compression yield strength (if required) (4.2.1) PREPARED BY AMS COMMITTEE “D”
