SAE AMS 4111E-2014 Aluminum Alloy Forgings 7 7Zn - 2 5Mg - 1 5Cu - 0 16Cr (7049-T73) Solution and Precipitation Heat Treated (UNS A97049).pdf

1、AEROSPACE MATERIAL SPECIFICATION AMS4111 REV. E Issued 1970-11 Reaffirmed 2012-09 Revised 2014-12 Superseding AMS4111D Aluminum Alloy Forgings 7.7Zn - 2.5Mg - 1.5Cu - 0.16Cr (7049-T73) Solution and Precipitation Heat Treated (Composition similar to UNS A97049) RATIONALE AMS4111E corrects errors in r

2、eferenced paragraphs (3.3.1.3.3, 3.3.1,3.4, 4.2.1, 4.2.2), revises Properties (3.3.1.2) and Reports (4.4), and clarifies test specimens taken from prolongations, forging stock or separately forged coupons (3.3.1.1.1). 1. SCOPE 1.1 Form This specification covers an aluminum alloy in the form of die f

3、orgings or hand forgings up to 5 inches (125 mm) in thickness, and forging stock of any size (See 8.5). 1.2 Application These products have been used typically for parts requiring high strength and resistance to stress-corrosion cracking, but usage is not limited to such applications. 2. APPLICABLE

4、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 referenced document has b

5、een canceled 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 724-776-4970 (outside USA), www.s

6、ae.org. AMS2355 Quality Assurance Sampling and Testing, Aluminum Alloys and Magnesium Alloys, Wrought Products, Except Forging Stock, and Rolled, Forged, or Flash Welded Rings AMS2772 Heat Treatment of Aluminum Alloy Raw Materials AMS2808 Identification, Forgings _ SAE Technical Standards Board Rule

7、s 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 therefrom, is the sole responsibility of

8、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 International All rights reserved. No part of this publication may be reproduced, stored

9、 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 (outside USA) Fax: 724-776-0790 Em

10、ail: 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/AMS4111E SAE INTERNATIONAL AMS4111E Page 2 of 9 2.2 ASTM Publications Available from ASTM International, 100 Barr Har

11、bor 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 Products for Aerospace Applications ASTM E 10 Brinell Hardness of Metallic Materials ASTM E 1004 Electrical Conductivity Using the Electromagnetic (Eddy Curr

12、ent) Method ASTM G 47 Determining Susceptibility to Stress-Corrosion Cracking of High Strength Aluminum Alloy Products 2.3 ANSI Publications Available from American National Standards Institute, 25 West 43rd Street, 4thFloor, New York, NY 10036, Tel: 212-642-4900, www.ansi.org. ANSI H35.2 Dimensiona

13、l 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 in accordance with AMS2355. TABLE 1 Composition Element min max Silicon - 0

14、.25 Iron - 0.35 Copper 1.2 1.9 Manganese - 0.20 Magnesium 2.0 2.9 Chromium 0.10 0.22 Zinc 7.2 8.2 Titanium - 0.10 Other Elements, each - 0.05 Other Elements, total - 0.15 Aluminum remainder 3.2 Condition The product shall be supplied in the following condition: 3.2.1 Die and Hand Forgings Solution a

15、nd precipitation heat treated in accordance with AMS2772 to the T73 temper. 3.2.2 Forging Stock As ordered by the forging manufacturer. 3.3 Properties The product shall conform to the following requirements determined in accordance with AMS2355: SAE INTERNATIONAL AMS4111E Page 3 of 9 3.3.1 Forgings

16、3.3.1.1 Tensile Properties Shall be as follows: 3.3.1.1.1 Test Specimens In the absence of a prolongation, test specimens machined from separately forged coupons or from forging stock, two inches thick or less, representing the forgings and, in either case, heat treated with the forgings represented

17、 shall have the properties shown in Table 2. Test specimens machined from prolongations of die forgings shall have the properties shown in Tables 3 and 4; prolongations of hand forgings shall have the properties shown in Table 5. TABLE 2 - Minimum Tensile Properties Property Value Tensile Strength 7

18、2 ksi (495 MPa) Yield Strength at 0.2% Offset 62 ksi (425 MPa) Elongation in 4D 7% 3.3.1.1.2 Die Forgings 3.3.1.1.2.1 With Grain Flow Specimens, machined from forgings with the axis of the specimen in the area of gage length varying not more than 15 degrees from parallel to the forging flow lines, s

19、hall have the properties shown in Table 3 provided the as-forged thickness is not more than twice the heat treated thickness. 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 i

20、n 4D % Up to 2, incl 72 62 7 Over 2 to 4, incl 71 61 7 Over 4 to 5, incl 70 60 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 4D % Up to 50, incl 495 425 7 Over 50 to 100,

21、incl 490 420 7 Over 100 to 125, incl 485 415 7 3.3.1.1.2.2 Across Grain Flow Specimens, machined from forgings with the axis of the specimen in the area of gage length varying not more than 15 degrees from perpendicular to the forging flow lines, shall have the properties shown in Table 4 provided t

22、he as-forged thickness is not more than twice the heat treated thickness. SAE INTERNATIONAL AMS4111E Page 4 of 9 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 % Up to

23、1, incl 71 61 3 Over 1 to 3, incl 70 60 3 Over 3 to 4, incl 70 60 2 Over 4 to 5, incl 68 58 2 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 % Up to 1, incl 490 420 3 Over

24、 1 to 3, incl 485 415 3 Over 3 to 4, incl 485 415 2 Over 4 to 5, incl 470 400 2 3.3.1.1.2.2.1 Elongation requirements shall not apply to test specimens having a gage-length diameter less than 0.250 inch (6.25 mm) or located in immediate proximity to an abrupt change in section thickness, or located

25、so that any part of the specimen gage length is located within 1/8 inch (3 mm) of the trimmed flash line. 3.3.1.1.3 Hand Forgings Specimens, machined from forgings having an essentially square or rectangular cross-section, shall have the properties shown in Table 5 provided that the as-forged sectio

26、n thickness does not exceed 5 inches (125 mm). TABLE 5A - Minimum Tensile Properties, Inch/Pound Units Nominal Thickness at Time of Heat Treatment Inches Specimen Orientation Tensile Strength ksi Yield Strength at 0.2% Offset ksi Elongation in 4D % Over 2 to 3, incl Longitudinal 71 61 9 Long Trans.

27、71 59 4 Short Trans. 69 58 3 Over 3 to 4, incl Longitudinal 69 59 8 Long Trans. 69 57 3 Short Trans. 67 56 2 Over 4 to 5, incl Longitudinal 67 56 7 Long Trans. 67 56 3 Short Trans. 66 55 2 SAE INTERNATIONAL AMS4111E Page 5 of 9 TABLE 5B - Minimum Tensile Properties, SI Units Nominal Thickness at Tim

28、e of Heat Treatment Millimeters Specimen Orientation Tensile Strength MPa Yield Strength at 0.2% Offset MPa Elongation in 4D % 50 to 75, incl Longitudinal 490 420 9 Long Trans. 490 405 4 Short Trans. 475 400 3 Over 75 to 100, incl Longitudinal 475 405 8 Long Trans. 475 395 3 Short Trans. 460 385 2 O

29、ver 100 to 125, incl Longitudinal 460 385 7 Long Trans. 460 385 3 Short Trans. 455 380 2 3.3.1.2 Mechanical properties outside the range covered by Tables 2, 3, 4 and 5 shall be agreed upon between purchaser and producer. 3.3.1.3 Conductivity Shall be as follows, determined in accordance with ASTM E

30、 1004 on the surface of sample: 3.3.1.3.1 If the conductivity is 40.0% IACS (International Annealed Copper Standard) or higher and tensile properties meet specified requirements, the forgings are acceptable. 3.3.1.3.2 If the conductivity is 38.0 - 39.9% IACS, incl, if the tensile properties meet spe

31、cified requirements, and if the longitudinal yield strength does not exceed the specified minimum value by more than 9.9 ksi (68 MPa), the forgings are acceptable. 3.3.1.3.3 If the conductivity is 38.0 - 39.9% IACS and the longitudinal yield strength exceeds the specified minimum by more than 9.9 ks

32、i (68 MPa), specimens excised from the forgings shall meet the requirements of 3.3.1.3 or the forgings shall be given additional artificial aging to reduce the yield strength to a point less than 9.9 ksi (68 MPa) higher than the specified minimum. 3.3.1.3.4 If the conductivity is below 38% IACS, the

33、 forgings are not acceptable. Forgings may be additionally aged in accordance with AMS2772 and the conductivity (3.3.1.3) and tensile properties (3.3.1.1) retested; if the requirements are met the product is acceptable. 3.3.1.4 Stress-Corrosion Resistance Specimens as in 4.3.4 from forgings 0.750 in

34、ch (19.0 mm) or greater in least dimension, stressed in the short-transverse direction (perpendicular, within 15 degrees to the longitudinal grain flow and perpendicular, within 15 degrees, to the parting plane) to 75% of the specified minimum longitudinal yield strength, shall meet the requirements

35、 of ASTM G 47. 3.3.1.5 Grain Flow Shall be as specified on the drawing or as agreed upon by purchaser and vendor. 3.3.2 Forging Stock When a sample of stock is forged to a test coupon and heat treated in the same manner as forgings, specimens taken from the heat treated coupon shall conform to the r

36、equirements of 3.3.1.1.1 and 3.3.1.3. If specimens taken from the stock after heat treatment in the same manner as forgings conform to the requirements of 3.3.1.1.1 and 3.3.1.3, the tests shall be accepted as equivalent to tests of a forged coupon. The forging stock supplier, however, shall not be r

37、equired to conduct such tests. SAE INTERNATIONAL AMS4111E Page 6 of 9 3.4 Quality Forgings, as received by purchaser, shall be uniform in quality and condition, sound, and free from foreign materials and from imperfections detrimental to usage of the forgings. 3.4.1 When specified, each forging (See

38、 8.2) shall be subjected to ultrasonic inspection in accordance with ASTM B 594 and, unless otherwise specified, shall meet the following requirements of that specification. 3.4.1.1 Die forgings 0.500 to 4 inches (12.50 to 100 mm), incl, in nominal section thickness and weighing not over 300 pounds

39、(135 kg) shall meet Class B. 3.4.1.2 Hand forgings 1 to 5 inches (25 to 125 mm) in nominal section thickness and weighing not more than 600 pounds (270 kg) shall meet Class A. 3.5 Tolerances Tolerances for forging stock shall conform to all applicable requirements of ANSI H35.2 or ANSI H35.2M. 4. QU

40、ALITY ASSURANCE PROVISIONS 4.1 Responsibility for Inspection The vendor of the product 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 necessary to ens

41、ure that the product conforms to specified requirements. 4.2 Classification of Tests 4.2.1 Acceptance Tests Composition (3.1), tensile properties (3.3.1.1), conductivity (3.3.1.3), and ultrasonic inspection (3.4.1) when specified and for tolerances (3.5) of forging stock are classified as acceptance

42、 tests and shall be performed on each lot. 4.2.2 Periodic Tests Stress-corrosion resistance (3.3.1.4) and grain flow (3.3.1.5) and tests of forging stock to determine ability to develop required properties (3.3.2) are classified as periodic tests and shall be performed at a frequency selected by the

43、 vendor unless frequency of testing is specified by purchaser. 4.3 Sampling and Testing Shall be as follows; a lot shall be all forgings of the same part number, size, or nominal cross-section and configuration heat treated in the same batch furnace load or in a continuous furnace consecutively duri

44、ng an 8-hour period. 4.3.1 Composition At least one sample shall be taken by the producer from each group of ingots cast simultaneously from the same source of molten metal. Complete ingot analysis records shall be available to the purchaser at the producers facility. 4.3.1.1 Unless compliance with

45、4.3.1 is established, an analysis shall be made for each 6000-pound (2700-kg) or less of material comprising the lot except that not more than one analysis shall be required per piece. 4.3.2 Tensile Properties 4.3.2.1 Die Forgings One or more forgings or forging prolongations heat treated with each

46、lot of forgings. SAE INTERNATIONAL AMS4111E Page 7 of 9 4.3.2.1.1 In lieu of a prolongation or separately-forged coupon, one or more tensile specimens with the grain flow and one or more tensile specimens across the grain flow shall be cut from the locations designated on the drawing from a forging

47、representing each lot. 4.3.2.2 Hand Forgings At least two tensile specimens shall be taken from a forging or forging prolongation representing the lot. One specimen shall be taken in the long-transverse direction and the other in the short-transverse direction. Specimens need not be taken in the lon

48、gitudinal direction unless specifically required by purchaser. 4.3.3 Conductivity Specimens shall be the samples from which the tensile specimens are taken. 4.3.4 Stress-Corrosion Resistance Samples shall be taken from a forging or forging prolongation. Specimens shall be not less than 0.750 inch (1

49、9 mm) cube. 4.4 Reports 4.4.1 The vendor of forgings shall furnish with each shipment a report stating that the chemical composition conforms to the requirements of this specification and, showing the numerical results of tests on each lot to determine conformance to the other acceptance test requirements, and stating that the forgings conform to the other technical requirements of this specification. This report shall include the p