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 2013 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:/www.sae.org/technical/standards/AMS4414 AEROSPACE MATERIAL SPECIFICATION AMS4414 Issued 2008-01 Reaffirmed 2013-1
5、2 Aluminum Alloy, Hand Forgings 7.5Zn - 1.6Cu - 1.5Mg - 0.12Zr (7085-T7452) Solution Heat Treated, Compression Stress-Relieved, and Overaged (Composition similar to UNS A97085) RATIONALE AMS4414 has been reaffirmed to comply with the SAE five-year review policy. 1. SCOPE 1.1 Form This specification
6、covers an aluminum alloy in the form of hand forgings 12 inches (305 mm) and under in nominal thickness and of forging stock. 1.2 Application These forgings have been used typically for machined structural parts and requiring high strength and resistance to stress-corrosion cracking, but usage is no
7、t limited to such application. 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
8、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 15096-0001, Tel: 877-606-7323 (inside USA an
9、d Canada) or 724-776-4970 (outside USA), www.sae.org. AMS 2355 Quality Assurance Sampling and Testing, Aluminum Alloys and Magnesium Alloys, Wrought Products, Except Forging Stock, and Rolled, Forged, or Flash Welded Rings AMS 2808 Identification, Forgings AMS 2772 Heat Treatment of Aluminum Alloy R
10、aw Materials AS 1990 Aluminum Alloy Tempers SAE INTERNATIONAL AMS4414 Page 2 of 7 2.2 ASTM 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 B 594 Ultrasonic Inspection of Aluminum-Alloy Wroug
11、ht Products for Aerospace Applications ASTM B 645 Plane Strain Fracture Toughness Testing of Aluminum Alloys ASTM B 660 Packaging/Packing of Aluminum and Magnesium Products ASTM E 399 Plane-Strain Fracture Toughness of Metallic Materials ASTM G 47 Determining Susceptibility to Stress-Corrosion Crack
12、ing of 2xxx and 7xxx Aluminum Alloys 2.3 ANSI Publications Available from American National Standards Institute, 25 West 43rd Street, New York, NY 10036, Tel: 212-642-4900, www.ansi.org. ANSI H35.2 Dimensional Tolerances for Aluminum Mill Products ANSI H35.2M Dimensional Tolerances for Aluminum Mill
13、 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 maxSilicon - 0.06Iron - 0.08Copper 1.3 2.0 Manganese - 0.04Magnesium 1.2 1.8 Chromium - 0.04Zinc 7.0 8.0
14、 Titanium - 0.06Zirconium 0.08 0.15Other Elements, each - 0.05Other Elements, total - 0.15Aluminum remainder 3.2 Condition 3.2.1 Hand Forgings Solution heat treated in accordance with AMS 2772, stress-relieved by compressing to produce a 1 to 5% permanent set, and overaged to the T7452 temper (See A
15、S1990). Solution heat-treatment and artificial age practices are proprietary. 3.2.2 Forging Stock As ordered by the forging manufacturer and shall comply with the composition requirements of Table 1. Material shall be free of conditions that are detrimental to the finished product. 3.3 Properties Th
16、e product shall conform to the following requirements, determined in accordance with AMS 2355 on the mill produced size. SAE INTERNATIONAL AMS4414 Page 3 of 7 3.3.1 Tensile Properties Specimens machined from forgings having essentially a rectangular or square cross section, heat treated in the indic
17、ated thickness, shall have the properties shown in Tables 2-4 provided that the as-forged thickness does not exceed 12.0 inches (305mm). The long transverse direction for square forgings shall be identified by the vendor. 3.3.1.1 With Grain Flow (Longitudinal) Specimens, machined from forgings or fr
18、om prolongations on such forgings, with axis of specimen in area of gage length varying not more than 15 degrees from parallel to the forging flow lines, shall have the properties shown in Table 2. TABLE 2A - MINIMUM TENSILE PROPERTIES, INCH/POUND UNITS Nominal Thickness At Time Of Heat Treatment In
19、ches Tensile Strength ksi Yield Strength at 0.2% Offset ksi Elongation in 4D % 2.001 to 4.000, incl 74.0 67.0 10 4.001 to 6.000, incl 72.0 65.0 10 6.001 to 8.000, incl 71.0 64.0 10 8.001 to 10.000, incl 69.0 62.0 10 10.001 to 12.000, incl 68.0 61.0 9 TABLE 2B - MINIMUM TENSILE PROPERTIES, SI UNITS N
20、ominal Thickness at Time of Heat Treatment Millimeters Tensile Strength MPa Yield Strength at 0.2% Offset MPa Elongation in 5D % Over 51 to 102, incl 510 462 9 Over 102 to 152, incl 496 448 9 Over 152 to 203, incl 490 441 9 Over 203 to 254, incl 476 427 9 Over 254 to 305, incl 469 421 8 3.3.1.2 Acro
21、ss Grain Flow (Long Transverse) Specimens, machined from forgings or from prolongations on such forgings, with axis of specimen in area of gage length varying not more than 15 degrees from perpendicular to the forging flow lines, shall have properties shown in Table 3. TABLE 3A - MINIMUM TENSILE PRO
22、PERTIES, INCH/POUND UNITS Nominal Thickness at Time of Heat Treatment Inches Tensile Strength ksi Yield Strength at 0.2% Offset ksi Elongation in 4D % 2.001 to 4.000, incl 73.0 66.0 6 4.001 to 6.000, incl 72.0 65.0 6 6.001 to 8.000, Incl 70.0 63.0 6 8.001 to 10.000, incl 69.0 61.0 6 10.001 to 12.000
23、, incl 67.0 59.0 5 SAE INTERNATIONAL AMS4414 Page 4 of 7 TABLE 3B - MINIMUM TENSILE PROPERTIES, SI UNITS Nominal Thickness at Time of Heat Treatment Millimeters Tensile Strength MPa Yield Strength at 0.2% Offset MPa Elongation in 5D % Over 51 to 102, incl 503 455 5 Over 102 to 152, incl 496 448 5 Ov
24、er 152 to 203, incl 483 434 5 Over 203 to 254, incl 476 421 5 Over 254 to 305, incl 462 407 4 3.3.1.3 Across Grain Flow (Short Transverse) Specimens, machined from forgings or from prolongations on such forgings, with axis of specimen in area of gage length varying not more than 15 degrees from perp
25、endicular to the forging flow lines, shall have properties shown in Table 4. TABLE 4A - MINIMUM TENSILE PROPERTIES, INCH/POUND UNITS Nominal Thickness at Time of Heat Treatment Inches Tensile Strength ksi Yield Strength at 0.2% Offset ksi Elongation in 4D % 2.001 to 4.000, incl 71.0 62.0 3 4.001 to
26、6.000, incl 70.0 60.0 3 6.001 to 8.000, incl 69.0 59.0 3 8.001 to 10.000, incl 68.0 57.0 3 10.001 to 12.000, incl 67.0 56.0 2 TABLE4B - MINIMUM TENSILE PROPERTIES, SI UNITS Nominal Thickness at Time of Heat Treatment Millimeters Tensile Strength MPa Yield Strength at 0.2% Offset MPa Elongation in 5D
27、 % 51 to 102, incl 490 427 3 Over 102 to 152, incl 483 414 3 Over 152 to 203, incl 476 407 3 Over 203 to 254, incl 469 393 3 Over 254 to 305, incl 462 386 2 3.3.2 Corrosion Resistance Resistance to stress-corrosion cracking of the forging heat lot is acceptable if the conditions of 3.3.2.1 are met.
28、3.3.2.1 Electrical Conductivity Shall be not lower than 38.0% IACS (International Annealed Copper Standard) (22.0 MS/m). Forgings with electrical conductivity measured to be 38.0 - 39.9% IACS on tensile bar blanks at T/2 shall have SCC testing performed per 3.3.2.3 in order to verify acceptable SCC
29、resistance. This provision is being added into this governing specification until enough data is acquired to assure that electrical conductivities within the range of 38.0 - 39.9%IACS can satisfy the requirements of 3.3.2.3. SAE INTERNATIONAL AMS4414 Page 5 of 7 3.3.2.2 Forgings not conforming to 3.
30、3.2.1 may be given additional overaging and retested to determine conformance to 3.3.1 and 3.3.2.1 3.3.2.3 Stress-Corrosion Resistance Specimens, not less than 0.750 inch (19.05 mm) in thickness cut from forgings tested in accordance with ASTM G 47, shall show no evidence of stress-corrosion crackin
31、g when stressed in the short-transverse direction at 35.0 ksi (241 MPa). 3.3.3 Fracture Toughness When specified, forgings shall meet the values of KICshown in Table 5, determined in accordance with ASTM B 645. TABLE 5 - KICMINIMUM VALUES Nominal Thickness Inches Nominal Thickness Millimeters Specim
32、en Orientation Minimum KICksi inch Minimum KICMPa m Over 2.000 to 4.000, incl Over 51 to 102, incl L-T T-L S-L 30 19 19 33 21 21 Over 4.000 to 6.000, incl Over 102 to 152, incl L-T T-L S-L 28 19 17 31 21 19 Over 6.000 to 8.000, incl Over 152 to 203, incl L-T T-L S-L 26 17 16 29 19 18 Over 8.000 to 1
33、0.000, incl Over 203 to 254, incl L-T T-L S-L 24 15 15 26 16 16 Over 10.000 to 12.000, incl Over 254 to 305, incl L-T T-L S-L 22 14 13 24 15 14 3.3.3.1 KQvalues shall meet all requirements of ASTM E 399 for KICexcept that invalid KQvalues which are meaningful as defined by ASTM B 645 and which equal
34、 or exceed the KIClimit (3.3.3) shall be evidence of acceptable fracture toughness. 3.4 Quality The product, as received by purchaser, shall be uniform in quality and condition, sound, and free from foreign materials and from conditions detrimental to usage of the product. 3.4.1 When specified, each
35、 hand forging shall be subjected to ultrasonic inspection in accordance with ASTM B 594 and shall meet Class B acceptance criteria. 3.4.2 Forging surfaces shall be free of any form of surface discontinuities which would lead to rejections within final machined product. 3.5 Tolerances Forging stock s
36、hall conform to all applicable requirements of ANSI H35.2 or ANSI H35.2M. SAE INTERNATIONAL AMS4414 Page 6 of 7 4. QUALITY ASSURANCE PROVISIONS 4.1 Responsibility for Inspection The vendor of forgings shall supply all samples for vendors tests and shall be responsible for the performance of all requ
37、ired tests. Purchaser reserves the right to sample and to perform any confirmatory testing deemed necessary to ensure that the product conforms to specified requirements 4.2 Classification of Tests 4.2.1 Acceptance Tests Composition (3.1), tensile properties (3.3.1), electrical conductivity (3.3.2.)
38、, tolerances of forging stock (3.5), and when specified, ultrasonic inspection (3.4.1), and fracture toughness (3.3.3) are acceptance tests and, except for composition, shall be performed on each lot. 4.2.2 Periodic Tests Stress corrosion cracking (3.3.2.3), is a periodic test and shall be performed
39、 at a frequency selected by the vendor unless frequency of testing is specified by purchaser. 4.3 Sampling and testing Shall be in accordance with AMS 2355 and the following: 4.3.1 A lot shall not be more than 6000 pounds (2721 kg) of forgings of the same configuration or part number heat treated in
40、 the same batch furnace load or charged into a continuous furnace consecutively during an eight hour period 4.3.2 Tensile specimens machined from forgings shall be excised from the area specified on the engineering drawing. 4.3.3 For ultrasonic inspection, when required: Each forging shall be inspec
41、ted. 4.4 Reports The vendor of the forging shall furnish with each shipment a report stating that the product conforms to the composition, tensile properties, electrical conductivity, tolerances and when specified, ultrasonic inspection, fracture toughness and showing the numerical results of tests
42、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 forging producer, purchase order number, inspection lot number, AMS 4414 and the section identifica
43、tion number. 4.4.1 The vendor of forging stock shall furnish with each shipment a report stating that the chemical composition of the stock conforms to specified requirements. This report shall include the purchase order number, inspection lot number, AMS 4414, size, and quantity. 5. PREPARATION FOR
44、 DELIVERY 5.1 Identification Shall be as follows: 5.1.1 Forgings In accordance with AMS 2808. SAE INTERNATIONAL AMS4414 Page 7 of 7 5.1.2 Forging Stock As agreed upon by purchaser and vendor. 5.2 Packaging The product shall be prepared for shipment in accordance with ASTM B 660 and in compliance wit
45、h applicable rules and regulations pertaining to the handling, packaging, and transportation of the product to ensure carrier acceptance and safe delivery. 6. ACKNOWLEDGMENT A vendor shall include this specification number and its revision letter in all quotations and when acknowledging purchase ord
46、ers. 7. REJECTIONS Product not conforming to this specification, or to modifications authorized by purchaser, will be subject to rejection. 8. NOTES 8.1 A change bar (|) located in the left margin is for the convenience of the user in locating areas where technical revisions, not editorial changes,
47、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, including technical revision. Change bars and (R) are not used in original publications, nor in specifications that contain editorial changes o
48、nly. 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 are presented only for information. 8.4 Purchase documents should specify not less than the following: AMS 4414 Form and size or part number of product desired Quantity of product desired If ultrasonic inspection is required If fracture toughness testing is required. PREPARED BY AMS COMMITTEE “D”
