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: +1 724-776-4970
4、 (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/AMS4305 AEROSPACEMATERIAL SPECIFICATIONAMS4305 Issued 2005-08 Reaffirmed 2017-09 Aluminum Alloy,
5、Extruded Profiles (7449-T79511) 8.1Zn - 1.8Cu - 2.2Mg - 0.16Zr Solution Heat Treated, Stress Relieved, and Overaged (Composition similar to UNS A97449) RATIONALE AMS4305 has been reaffirmed to comply with the SAE Five-Year Review policy. 1. SCOPE:1.1 Form: This specification covers an aluminum alloy
6、 in the form of extruded profiles. 1.2 Application: These extrusions have been used typically for machined parts requiring dimensional stability during machining processes and high strength and toughness in service, but usage is not limited to such applications. 2. APPLICABLE DOCUMENTS:The issue of
7、the following documents in effect on the date of the purchase order forms a part ofthis specification to the extent specified herein. The supplier may work to a subsequent revision ofa document unless a specific document issue is specified. When the referenced document hasbeen cancelled and no super
8、seding document has been specified, the last published issue of thatdocument shall apply.2.1 SAE Publications: Available from SAE, 400 Commonwealth Drive, Warrendale, PA 15096-0001 or www.sae.org. AMS 2355 Quality Assurance Sampling and Testing, Aluminum Alloys and Magnesium Alloys, Wrought Products
9、, Except Forging Stock, and Rolled, Forged, or Flash Welded Rings AMS 2772 Heat Treatment of Aluminum Alloy Raw Materials AS1990 Aluminum Alloy Tempers 2.2 ASTM Publications: Available from ASTM, 100 Barr Harbor Drive, P.O. Box C700, West Conshohocken, PA 19428-2959 or www.astm.org. ASTM B 557 Tensi
10、on Testing of Wrought and Cast Aluminum and Magnesium Alloy Products ASTM B 594 Ultrasonic Inspection of Aluminum-Alloy Wrought Products for Aerospace Applications ASTM B 645 Plane strain Fracture Toughness Testing of Aluminum Alloys ASTM E 399 Plane Strain Fracture Toughness Testing of Metallic Mat
11、erials ASTM B 660 Packaging Of Aluminum and Magnesium Products ASTM B 666/B 666M Identification Marking of Aluminum Products ASTM E 9 Compressive testing of Metallic Materials at Room Temperature ASTM G 47 Determining susceptibility to Stress Corrosion cracking of high strength Aluminum Alloy Produc
12、ts 2.3 ANSI Publications: Available from ANSI, 25 West 43rd Street, 4th Floor, New York, NY 10036 or www.ansi.org. ANSI H35.2 Dimensional Tolerances for Aluminum Mill Products ANSI H35.2(M) Dimensional Tolerances for Aluminum Mill Products (Metric) 3. TECHNICAL REQUIREMENTS: 3.1 Composition: Shall c
13、onform to the percentages by weight shown in Table 1, determined in accordance with AMS 2355. TABLE 1 - Composition Element min max Silicon Iron Copper Magnanese Magnesium Zinc Zirconium+Titanium Other Elements, each Other Elements, total - - 1.4 - 1.8 7.5 - - - 0.12 0.15 2.1 0.20 2.7 8.7 0.25 0.05
14、0.15 Aluminum remainder SAE INTERNATIONAL AMS4305 Page 2 of 6_ 3.2 Condition: Solution 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 over-aged to the T79511 temper. (See AS1990). 3.2.1 Product shall be supplied with
15、an as-extruded surface finish; light polishing to remove minor surface imperfections is permissible provided such imperfections 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. 3
16、.3 Heat Treatment: Shall be in accordance with AMS 2772 and as follows: 3.3.1 Solution Heat Treatment: Heat to 870 to 890 F (466 C to 477 C), hold at heat for a time commensurate with section thickness but not less than 15 minutes and quench in water. 3.3.2 Over-aging Heat Treatment: It is recommend
17、ed that extrusions be over-aged by heating to 250 F +/-7F (121 C +/-4 C), holding at heat for 6 to 26 hours, then increase temperature to 302 F+/-5F (150 C +/-3 C), holding for 15 to 19 hours and air cool. Alternate treatment may be used, provided the aged materials meet the specified requirements o
18、f 3.4. 3.4 Properties: Extrusions shall conform to the following requirements, determined in accordance with AMS 2355 on the mill product. 3.4.1 Longitudinal and long transverse tensile properties of extrusions, with a maximum cross-sectional area of 20 square inches (129 cm) and a maximum circle si
19、ze of 10 inches (254 mm), shall be as specified in Table 2. TABLE 2A Minimum Tensile Properties, Inch/Pound Units Normal Thickness Inch Specimen Orientation Tensile Strength ksi Yield Strength at 0.2% Offset ksi Elongation in 2 inches or 4D % 0.500 to 1.750, incl Longitudinal Long-Transverse 91.0 86
20、.0 87.0 82.0 9 6 TABLE 2B Minimum Tensile Properties, SI Units Normal Thickness Millimeters Specimen Orientation Tensile Strength MPa Yield Strength at 0.2% Offset MPa Elongation in 5.65A or 5D % 12.7 to 44.5, incl Longitudinal Long-Transverse 627 593 600 565 8 5 SAE INTERNATIONAL AMS4305 Page 3 of
21、6_ 3.4.2 Longitudinal compressive yield strength, when specified, shall be 90.0 ksi (620 MPa), minimum. 3.4.3 Electrical Conductivity: Shall be not lower than 35.5% IACS (International Annealed Copper Standard) (20.0 MS/m), determined on the surface of the test coupon prior to turning. 3.4.4 Stress
22、Corrosion Cracking: Specimens cut from extrusions 0.750 inch (19.05 mm) and over in nominal thickness, shall show no evidence of stress corrosion cracking when stressed in long transverse direction to 45 ksi (310 MPa)in accordance with ASTM G 47and exposed for 20 days. 3.4.5 Fracture toughness: Plai
23、n strain fracture toughness (KIC) for the L-T and T-L specimen orientations and configurations conforming to ASTM E 399 and ASTM B 645 shall be not lower than the values specified in Table 3 for products with a nominal thickness of 0.750 to 1.750 inch (19.05 to 44.5 mm). TABLE 3 Minimum Fracture Tou
24、ghness Properties Normal Thickness Inches Nominal ThicknessMillimeters Specimen Orientation KICksi inch KICMPa m 0.750 to 1.750, incl 19.05 ro 44.5, incl L-T T-L 23 16 25 18 3.5 Quality: Product, as received by purchaser, shall be uniform in quality and condition, sound, and free from foreign materi
25、als and from imperfections detrimental to usage of the extrusions. 3.5.1 When specified, each extruded profile shall be subjected to ultrasonic inspection in accordance with ASTM B 594 and shall meet the following requirements: 3.5.1.1 Each extrusion having a maximum width-to-thickness ratio of 10:1
26、 shall meet ultrasonic class B requirements, as described in ASTM B 594. 3.5.1.2 The ultrasonic class for other extruded profiles in excess of 10:1 maximum width-to-thickness ratio shall be as agreed upon by cogniscent engineering personnel. 3.5.2 Intergranular Attack (IGA): No IGA is permitted on s
27、ections up to 0.750 inch (19.05 mm) thick. IGA, if found during this inspection, shall be removed by suitable means (machining, sanding, chem. milling, etc) (see 8.12). 3.6 Tolerances: Shall conform to all applicable requirements of ANSI H35.2 or ANSI H35.2M. SAE INTERNATIONAL AMS4305 Page 4 of 6_ 4
28、. QUALITY ASSURANCE PROVISIONS: 4.1 Responsibility for Inspection: The vendor of the extrusions 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 necessa
29、ry to ensure that the products conform to specified requirements. 4.2 Classification of Tests: 4.2.1 Acceptance Tests: Composition (3.1), tensile properties (3.4.1), electrical conductivity (3.4.3), tolerances (3.6), and when specified, ultrasonic soundness (3.5.1) are acceptance tests and, except f
30、or composition, shall be performed on each lot. 4.2.2 Periodic Tests: Compressive Yield strength (3.4.2), Stress Corrosion Resistance (3.4.4) and Fracture Toughness (3.4.5) are periodic tests and shall be performed at a frequency selected by the vendor unless, frequency of testing is specified by pu
31、rchaser. 4.3 Sampling and Testing: Shall be in accordance with AMS 2355. 4.4 Reports: The vendor of extrusions shall furnish with each shipment a report stating that the product conforms to the composition, tolerances and ultrasonic inspection (when required); and showing the numerical results of te
32、sts on each inspection lot to determine conformance to the other acceptance test requirements and to the periodic tests when performed. This report shall include the purchase order number, inspection lot number(s), AMS 4305, size and quantity. The report shall also identify the producer, the product
33、 form and the size of the mill product. 4.5 Resampling and Retesting: Shall be in accordance with AMS 2355. 5. PREPARATION FOR DELIVERY: 5.1 Identification: Shall be in accordance with ASTM B 666/B666M. 5.2 Packaging: Products shall be prepared for shipment in accordance with ASTM B 660 and in compl
34、iance with applicable rules and regulations pertaining to the handling, packaging, and transportation of the extrusions to ensure carrier acceptance and safe delivery. SAE INTERNATIONAL AMS4305 Page 5 of 6_ 6. ACKNOWLEDGEMENT: A vendor shall mention this specification number in all quotations and wh
35、en acknowledging purchase orders. 7. REJECTIONS: Products not conforming to this specification, or to modifications authorized by purchaser, will be subject to rejection. 8. NOTES: 8.1 A change bar (I) located in the left margin is for the convenience of the user in locating areas where technical re
36、visions, not editorial changes, have been made to the previous issue of a specification. An (R) symbol to the left of the document title indicates a complete revision of the specification. Change bars and (R) are not used in original publications, nor in specifications that contain editorial changes
37、 only. 8.2 For profiles 0.750 inch (19.05 mm) thick and over, surface machining or chemical milling is recommended to remove surface condition which may occur on -w product during fabrication. 8.2.1 Extrusions produced to this specification exhibit a thin re-crystallized surface layer similar to oth
38、er high strength 7XXX alloys. Limits on the thickness of the re-crystallized surface layer can be guaranteed for specific profiles if requested by purchaser. 8.3 Terms used in AMS are clarified in ARP1917. 8.4 Dimensions and properties in inch/pound units and the Fahrenheit temperatures are primary;
39、 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. 8.5 Purchase documents should specify not less than the following: AMS 4305 Form and size or section identification number of extr
40、usions desired Quantity of extrusions desired Whether ultrasonic inspection of extruded profiles (shapes) is required (See 3.5.1). 8.6 Key words: Machining dimensional stability Service toughness Aluminum alloy Extrusions UNS A97449 Solution heat treated, stress relieved, overaged PREPARED UNDER THE JURISDICTION OF AMS COMMITTEE “D” SAE INTERNATIONAL AMS4305 Page 6 of 6_
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