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/AMS4403A AEROSPACE MATERIAL SPECIFICATION AMS4403 REV. A Issued 2006-08 Revised 2017-11 Superse
5、ding AMS4403 Aluminum Alloy, Die 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 AMS4403A revises Condition (3.2), Properties (3.3.1.4), Reports (4.4) and Identification (5.1.1), and i
6、s a Five-Year Review and update of this specification. 1. SCOPE 1.1 Form This specification covers an aluminum alloy in the form of die forgings 1.000 to 12.000 inches inclusive (25 to 305 mm) in nominal thickness at the time of heat treatment and of forging stock (see 8.4). 1.2 Application These fo
7、rgings have been used typically for machined structural parts subject to warpage during machining and requiring high strength and resistance to stress-corrosion cracking, but usage is not limited to such application. 2. APPLICABLE DOCUMENTS The issue of the following documents in effect on the date
8、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 has been cancelled and no superseding document has been specified, the las
9、t 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 +1 724-776-4970 (outside USA), www.sae.org. AMS2355 Quality Assurance Sampling and Testing, Aluminum
10、Alloys and Magnesium Alloys, Wrought Products, Except Forging Stock, and Rolled, Forged, or Flash Welded Rings AMS2808 Identification, Forgings AMS2772 Heat Treatment of Aluminum Alloy Raw Materials ARP1917 Clarification of Terms Used in Aerospace Metals Specifications SAE INTERNATIONAL AMS4403A Pag
11、e 2 of 8 2.2 ANSI Accredited Publications Copies of these documents are available online at http:/webstore.ansi.org/. ANSI H35.1/ H35.1M Standard Alloy and Temper Designation System For Aluminum ANSI H35.2 Dimensional Tolerances for Aluminum Mill Products ANSI H35.2M Dimensional Tolerances for Alumi
12、num Mill Products (Metric) 2.3 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 B594 Ultrasonic Inspection of Aluminum-Alloy Wrought Products ASTM B645 Linear Elastic Plane Strain Fractu
13、re Toughness Testing of Aluminum Alloys ASTM B660 Packaging/Packing of Aluminum and Magnesium Products ASTM E399 Linear Elastic Plane-Strain Fracture Toughness KIc of Metallic Materials ASTM E1417/E1417M Liquid Penetrant Testing ASTM G47 Determining Susceptibility to Stress-Corrosion cracking of 2xx
14、x and 7xxx Aluminum Alloys 3. TECHNICAL REQUIREMENTS 3.1 Composition Shall conform to the percentages by weight shown in Table 1, determined in accordance with AMS2355. Table 1 - Composition Element Min Max Silicon - 0.06 Iron - 0.08 Copper 1.3 2.0 Manganese - 0.04 Magnesium 1.2 1.8 Chromium - 0.04
15、Zinc 7.0 8.0 Titanium - 0.06 Zirconium 0.08 0.15 Other Elements, each - 0.05 Other Elements, total - 0.15 Aluminum remainder 3.2 Condition 3.2.1 Die Forgings Solution heat treated in accordance with AMS2772, stress-relieved by compressing to produce a 1 to 5% permanent set, and overaged to the T7452
16、 temper (see ANSI H35.1/H35/1M). Solution heat-treat and artificial age practices are proprietary. SAE INTERNATIONAL AMS4403A Page 3 of 8 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 tha
17、t are detrimental to the finished product. 3.3 Properties The product shall conform to the following requirements, determined in accordance with AMS2355 on the mill produced size. 3.3.1 Die Forgings 3.3.1.1 Tensile Properties Shall be as follows: 3.3.1.1.1 With Grain Flow (Longitudinal) Specimens, m
18、achined from forgings or from 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 2 Table 2A - Minimum tensile properties, inch/pound units Nominal Thi
19、ckness At Time Of Heat Treatment Inches Tensile Strength ksi Yield Strength at 0.2% Offset ksi Elongation in 4D % 1.000 to 2.000, incl 72.0 65.0 10 2.001 to 4.000, incl 72.0 65.0 9 4.001 to 6.000, incl 72.0 65.0 9 6.001 to 8.000, incl 72.0 65.0 8 8.001 to 10.000, incl 72.0 65.0 7 10.001 to 12.000, i
20、ncl 72.0 65.0 7 Table 2B - 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 4D % 25 to 51, incl 496 448 10 Over 51 to 102, incl 496 448 9 Over 102 to 152, incl 496 448 9 Over 152 to 203,
21、incl 496 448 8 Over 203 to 254, incl 496 448 7 Over 254 to 305, incl 496 448 7 SAE INTERNATIONAL AMS4403A Page 4 of 8 3.3.1.1.2 Across 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
22、than 15 from perpendicular to the forging flow lines, shall have properties shown in Table 3. Table 3 Table 3A - 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 % 1.000 to 2.000, i
23、ncl 70.0 62.0 8 2.001 to 4.000, incl 70.0 62.0 7 4.001 to 6.000, incl 70.0 62.0 7 6.001 to 8.000, Incl 70.0 62.0 6 8.001 to 10.000, incl 70.0 62.0 5 10.001 to 12.000, incl 70.0 62.0 4 Table 3B - Minimum tensile properties, SI units Nominal Thickness at Time of Heat Treatment Millimeters Tensile Stre
24、ngth MPa Yield Strength at 0.2% Offset MPa Elongation in 4D % 25 to 51, incl 483 427 8 Over 51 to 102, incl 483 427 7 Over 102 to 152, incl 483 427 7 Over 152 to 203, incl 483 427 6 Over 203 to 254, incl 483 427 5 Over 254 to 305, incl 483 427 4 3.3.1.1.3 Across Grain Flow (Short Transverse) Specime
25、ns, machined from forgings or from prolongations on such forgings, with axis of specimen in area of gage length varying not more than 15 from perpendicular to the forging flow lines, shall have properties shown in Table 4. Table 4 Table 4A - Minimum tensile properties, inch/pound units Nominal Thick
26、ness 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 70.0 59.0 5 4.001 to 6.000, incl 70.0 59.0 4 6.001 to 8.000, incl 70.0 59.0 4 8.001 to 10.000, incl 70.0 59.0 3 10.001 to 12.000, incl 70.0 59.0 3 SAE INTERNATIONAL AM
27、S4403A Page 5 of 8 Table 4B - 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 4D % 51 to 102, incl 483 407 5 Over 102 to 152, incl 483 407 4 Over 152 to 203, incl 483 407 4 Over 203 to 2
28、54, incl 483 407 3 Over 254 to 305, incl 483 407 3 3.3.1.2 Corrosion Resistance Resistance to stress-corrosion cracking of the forging heat lot is acceptable if the conditions of 3.3.1.2.1 are met. 3.3.1.2.1 Electrical Conductivity Shall be not lower than 38.0% IACS (International Annealed Copper St
29、andard) (22.0 MS/m). 3.3.1.2.2 Forgings not conforming to 3.3.1.2.1 may be given additional overaging and retested to determine conformance to 3.3.1.1 and 3.3.1.2.1 3.3.1.3 Stress-Corrosion Resistance Specimens, not less than 0.750 inch (19.05 mm) in thickness cut from forgings tested in accordance
30、with ASTM G47, shall show no evidence of stress-corrosion cracking when stressed in the short-transverse direction at 35.0 ksi (241 MPa). 3.3.1.4 Fracture Toughness When specified, plane strain fracture toughness shall be tested in accordance with ASTM E399 and ASTM B645 for forgings 1.000 to 8.000
31、inches (25 to 203 mm) inclusive in nominal thickness. A valid KIc meeting the requirements of ASTM E399 or a KQ “useable for lot release” in accordance with ASTM B645 shall meet or exceed the values specified in Table 5. Table 5 - Kic minimum values Nominal Thickness Inches Nominal Thickness Millime
32、ters Specimen Orientation Minimum KIC or KQ “useable for lot release” ksi inch Minimum KIC or KQ “useable for lot release” MPa m 1.000 to 2.000, incl 2.001 to 4.000, incl 4.001 to 6.000, incl 6.001 to 8.000, incl 25 to 51, incl Over 51 to 102, incl Over 102 to 152, incl Over 152 to 203, incl L-T T-L
33、 L-T T-L S-L L-T T-L S-L L-T T-L S-L 31 26 29 24 23 27 22 22 25 20 20 34 29 32 26 25 30 24 24 27 22 22 3.3.2 Mechanical property requirements for product outside of the range covered by 1.1 shall be agreed upon between purchaser and producer. SAE INTERNATIONAL AMS4403A Page 6 of 8 3.4 Quality The pr
34、oduct, 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 die forging shall be subjected to ultrasonic inspection in accordance with ASTM B594 and shall meet C
35、lass B acceptance criteria. 3.4.2 When specified, each die forging shall be subjected to fluorescent penetrant inspection in accordance with ASTM E1417. Forgings shall be free from surface defects such as seams, laps, bursts, and quench cracks. 3.4.3 Grain flow of die forgings, except in areas which
36、 contain end grain, shall follow the general contour of the forgings showing no evidence of reentrant grain flow. 3.5 Tolerances Forging stock shall conform to all applicable requirements of ANSI H35.2 or ANSI H35.2M. 4. QUALITY ASSURANCE PROVISIONS 4.1 Responsibility for Inspection The producer of
37、forgings shall supply all samples for producers 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 necessary to ensure that the product conforms to specified requirements 4.2 Classification o
38、f Tests 4.2.1 Acceptance Tests Composition (3.1), tensile properties (3.3.1.1), electrical conductivity (3.3.1.2.1), tolerances (3.5), and when specified, ultrasonic inspection (3.4.1), fracture toughness (3.3.1.4) and fluorescent penetrant inspection (3.4.2) are acceptance tests and, except for com
39、position, shall be performed on each lot. 4.2.2 Periodic Tests Stress corrosion cracking (3.3.1.3), is a periodic test and shall be performed at a frequency selected by the producer unless frequency of testing is specified by purchaser. 4.3 Sampling and testing Shall be in accordance with AMS2355 4.
40、3.1 Tensile specimens machined from forgings shall be excised from the area specified on the engineering drawing. 4.4 Reports The producer of the forging shall furnish with each shipment a report stating that the product conforms to the composition, tensile properties, electrical conductivity, toler
41、ances and when specified, ultrasonic inspection, fluorescent penetrant inspection, fracture toughness 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 technica
42、l requirements. This report shall include the forging producer, purchase order number, inspection lot number, AMS4403A and the section identification number. SAE INTERNATIONAL AMS4403A Page 7 of 8 4.4.1 When the product size is outside the range covered by 1.1, the report shall contain a statement t
43、o that effect. 4.4.2 When material produced to this specification, is beyond the sizes allowed in the scope or 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 AMS4403A(EXC) because
44、 of the following exceptions.” and the specific exceptions shall be listed. 4.4.3 The producer 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, inspec
45、tion lot number, AMS4403A, size, and quantity. 5. PREPARATION FOR DELIVERY 5.1 Identification Shall be as follows: 5.1.1 Forgings In accordance with AMS2808. 5.1.2 Forging Stock As agreed upon by purchaser and producer. 5.1.3 When technical exceptions are taken (see 4.4.2), the material shall be mar
46、ked with AMS4403(EXC). 5.2 Packaging The product shall be prepared for shipment in accordance with ASTM B660 and in compliance with applicable rules and regulations pertaining to the handling, packaging, and transportation of the product to ensure carrier acceptance and safe delivery. 6. ACKNOWLEDGM
47、ENT A producer shall mention this specification number in all quotations and when acknowledging purchase orders. 7. REJECTIONS Product 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) loc
48、ated in the left margin is for the convenience of the user in locating areas where technical revisions, not editorial changes, have 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 rev
49、isions. Change bars and (R) are not used in original publications, nor in documents that contain editorial changes only. SAE INTERNATIONAL AMS4403A Page 8 of 8 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 primar
