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 2015 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/AMS4229G AEROSPACE MATERIAL SPECIFICATION AMS4229 REV. G Issued 1969-11 Reaffirme
5、d 2006-04 Revised 2015-09 Superseding AMS4229F Aluminum Alloy Castings, High Strength 4.5Cu - 0.70Ag - 0.30Mn - 0.25Mg - 0.25Ti (A201.0-T7) Solution Heat Treated and Overaged (Composition similar to UNS A02010) RATIONALE AMS4229G revises heat treatment requirements (Section 3.5) as a result of a Lim
6、ited Scope Ballot. 1. SCOPE 1.1 Form This specification covers an aluminum alloy in the form of sand, permanent mold, and composite mold castings. 1.2 Application These castings have been used typically for components requiring a combination of high strength and moderate ductility at both room and e
7、levated temperatures, but usage is not limited to such applications. 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 documen
8、t unless a specific document issue is 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-
9、0001, Tel: 877-606-7323 (inside USA and Canada) or +1 724-776-4970 (outside USA), www.sae.org. AMS2175 Castings, Classification and Inspection of AMS2360 Room Temperature Tensile Properties of Castings AMS2694 In-Process Welding of Castings SAE INTERNATIONAL AMS4229G Page 2 of 8 AMS2771 Heat Treatme
10、nt of Aluminum Alloy Castings AMS2804 Identification Castings 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 B557 Tension Testing Wrought and Cast Aluminum- and Magnesium- Alloy Pr
11、oducts ASTM B557M Tension Testing Wrought and Cast Aluminum- and Magnesium- Alloy Products (Metric) ASTM E29 Using Significant Digits in Test Data to Determine Conformance with Specifications ASTM E34 Chemical Analysis of Aluminum and Aluminum-Base Alloys ASTM E607 Atomic Emission Spectrometric Anal
12、ysis Aluminum Alloys by the Point-to-Plane Technique, Nitrogen Atmosphere ASTM E716 Sampling and Sample Preparation of Aluminum and Aluminum Alloys for Determination of Chemical Composition by Spectrochemical Analysis ASTM E1251 Analysis of Aluminum and Aluminum Alloys by Atomic Emission Spectrometr
13、y ASTM E1417/E1417M Liquid Penetrant Testing ASTM E1742/E1742M Radiographic Examination ASTM G47 Determining Susceptibility to Stress Corrosion Cracking of 2XXX and 7XXX Alloy Products 3. TECHNICAL REQUIREMENTS 3.1 Composition Shall conform to the percentages by weight as shown in Table 1, determine
14、d by wet chemical methods in accordance with ASTM E34, by spectrochemical methods in accordance with ASTM E607, ASTM E1251, or by other analytical methods acceptable to purchaser (see 3.4.1). Table 1 - Composition Element min max Silicon - 0.05 Iron - 0.10 Copper 4.0 5.0 Manganese 0.20 0.40 Magnesiu
15、m 0.15 0.35 Titanium 0.15 0.35 Silver 0.40 1.0 Other Elements, each - 0.03 Other Elements, total - 0.10 Aluminum remainder 3.1.1 Test results may be rounded by the “rounding off” method of ASTM E29. 3.2 Condition Solution heat treated and overaged. SAE INTERNATIONAL AMS4229G Page 3 of 8 3.3 Castings
16、 Castings shall be produced from metal conforming to 3.1, determined by analysis of a specimen (3.4.1) cast after the last melt addition. 3.4 Cast Test Specimens Chemical analysis specimens and tensile specimens shall be cast as follows: 3.4.1 Chemical Analysis Specimens Shall be cast from each melt
17、 after the last melt addition and shall be tested to qualify the melt lot as in 3.1. Spectrochemical sample shall be prepared in accordance with ASTM E716. 3.4.2 Tensile Specimens Unless otherwise specified, tensile specimens shall be cut from the casting for testing to determine acceptance of the c
18、astings as in 3.6.1.1. Integrally cast or separately cast specimens, as in 3.6.1.2, shall only be used when permitted by the cognizant engineering organization. 3.4.2.1 Specimens Cut from a Casting and Integrally-Cast Coupons Shall conform to ASTM B557 or ASTM B557M and shall be either 0.500 inch (1
19、2.70 mm) diameter at the reduced parallel gage section, sub-size specimens proportional to the standard, or standard sheet-type specimens, as required by 3.6.1. 3.4.2.2 Separately-Cast Specimens Separately cast specimens shall conform to ASTM B557 or ASTM B557M and shall be cast from each melt after
20、 the last melt addition for testing to determine acceptance of the castings as in 3.6.1.2. Specimens shall be cast in molds representing the mold used for castings. Chills are not permitted on test specimen cavity, except on the end face of the specimen when approved in accordance with 4.4.2. 3.5 He
21、at Treatment Castings and representative tensile specimens shall be solution and precipitation heat treated in accordance with AMS2771, except as required by 3.5.1 and 3.5.2 to produce the properties specified by 3.6.1 and 3.6.2 (see 8.4.5 and 8.5). For specific castings, in lieu of the changes intr
22、oduced by AMS4229G, it is permissible to continue using heat treating process parameters which were previously approved per 4.4. When separately-cast or integral specimens are permitted, at least one set of tensile specimens shall, during each stage of heat treatment, be put into a batch-type furnac
23、e with each load of castings represented or put into a continuous furnace at intervals of not longer than 3 hours. 3.5.1 Solution Heat Treatment Unless otherwise specified in 3.5.1.1, soak at 910 F 10 F (488 C 6 C) for 2 hours 0.25 hour, raise temperature to 950 F 10 F (510 C 6 C) and soak for 2 hou
24、rs 0.25 hour, raise temperature to 985 F 10 F (529 C 6 C) and soak for not less than 12 hours, and quench and age at room temperature for not less than 72 hours. 3.5.1.1 When approved by the cognizant engineering organization, soak at 950 F 10 F (510 C 6 C) for 2 hours 0.25 hour, raise temperature t
25、o 985 F 10 F (529 C 6 C), soak for not less than 8 hours, and quench and age at room temperature for not less than 72 hours. 3.5.2 Precipitation Heat Treatment to Overage Soak at 370 F 10 F (188 C 6 C) for 5 hours minimum, and cool in air. SAE INTERNATIONAL AMS4229G Page 4 of 8 3.6 Properties Castin
26、gs with nominal wall thickness 1.0 inch (25 mm) and under and not over 50 pounds (23 kg) in overall weight and representative tensile specimens produced in accordance with 3.4.2 shall conform to the following requirements; property requirements for castings over 1.0 inch (25 mm) in nominal wall thic
27、kness or over 50 pounds (23 kg) in overall weight shall be as agreed upon by purchaser and vendor (see 8.2): 3.6.1 Tensile Properties Shall be as follows, determined in accordance with ASTM B557 or ASTM B557M; conformance to the requirements of 3.6.1.1 shall be used as basis for acceptance of castin
28、gs except when purchaser specifies that the requirements of 3.6.1.2 apply: 3.6.1.1 Specimens Cut From Castings Specimens as in 4.3.3 shall have the properties shown in Tables 2 and 3. 3.6.1.1.1 Designated Casting Areas Table 2 - Minimum tensile properties designated areas Property Value Tensile Stre
29、ngth 60.0 ksi (414 MPa) Yield Strength at 0.2% Offset 50.0 ksi (345 MPa) Elongation in 4D 3% 3.6.1.1.2 Casting Areas Other than Designated Areas Table 3 - Minimum tensile properties other areas Property Value Tensile Strength 56.0 ksi (386 MPa) Yield Strength at 0.2% Offset 48.0 ksi (331 MPa) Elonga
30、tion in 4D 1.5% 3.6.1.1.3 When properties other than those of 3.6.1.1.1 or 3.6.1.1.2 are required, tensile specimens taken from locations indicated on the drawing, from a casting or castings chosen at random to represent the lot, shall have the properties indicated on the drawing for such specimens.
31、 Property requirements may be designated in accordance with AMS2360. 3.6.1.2 Separately-Cast Specimens and Integrally Cast Specimens, When Specified Specimens as in 4.3.4 shall have the properties shown in Table 4. Table 4 - Minimum tensile properties - specimens Properties Value Tensile Strength 60
32、.0 ksi (414 MPa) Yield Strength at 0.2% Offset 50.0 ksi (345 MPa) Elongation in 4D 3% 3.6.2 Stress-Corrosion Resistance Specimens as in 4.3.5 shall show no evidence of stress corrosion cracking when tested for 30 days by alternate immersion in accordance with ASTM G47 at a stress of 75% of the speci
33、fied minimum yield strength. SAE INTERNATIONAL AMS4229G Page 5 of 8 3.7 Quality Castings, 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 castings. 3.7.1 When acceptance standards are not s
34、pecified, Grade C of AMS2175 shall apply. 3.7.2 Methods of inspection and frequency of inspection shall be as agreed upon by purchaser and vendor. A “Casting Class” of AMS2175 may be selected to specify the method and frequency of inspection. 3.7.3 Castings shall be produced under radiographic contr
35、ol. This control shall consist of 100% radiographic inspection of castings until process control factors (see 4.4.2) have been established to ensure production of acceptable castings. Unless otherwise specified by purchaser, continued radiographic inspection of production castings shall be performed
36、 at a frequency determined by the vendor to ensure continued maintenance of internal quality. 3.7.3.1 Radiographic inspection shall be conducted in accordance with ASTM E1742/E1742M unless otherwise specified by purchaser. 3.7.4 When specified by purchaser, castings shall be fluorescent penetrant in
37、spected using a method specified by purchaser, or, if not specified, a method in accordance with ASTM E1417/E1417M. 3.7.5 Castings shall not be peened, plugged, impregnated, or welded unless authorized by purchaser. 3.7.5.1 If welding is authorized by purchaser, welding shall be performed in accorda
38、nce with AMS2694 or other welding program approved by purchaser. 4. QUALITY ASSURANCE PROVISIONS 4.1 Responsibility for Inspection The vendor of castings shall supply all samples for vendors tests and shall be responsible for the performance of all required tests. Purchaser reserves the right to sam
39、ple and to perform any confirmatory testing deemed necessary to ensure that the castings conform to specified requirements. 4.2 Classification of Tests 4.2.1 Acceptance Tests Composition (3.1), tensile properties of specimens cut from castings (3.6.1.1) or, when specified, tensile properties of inte
40、grally-cast specimens or of separately-cast specimens (3.6.1.2), and quality (3.7) are acceptance tests and shall be performed to represent each melt or heat treat lot as applicable. 4.2.2 Periodic Tests Stress-corrosion resistance (3.6.2) and radiographic inspection (3.7.3) following the establishm
41、ent of process control (4.4.2) are periodic tests and shall be performed at a frequency selected by the vendor unless frequency of testing is specified by purchaser. 4.2.3 Preproduction Tests Tests for all technical requirements are preproduction tests and shall be performed on the first-article shi
42、pment of a casting to a purchaser, when a change in materials and/ or processing requires re-approval as in 4.4.2, and when purchaser deems confirmatory testing to be required. 4.3 Sampling and Testing Shall be in accordance with the following: SAE INTERNATIONAL AMS4229G Page 6 of 8 4.3.1 One chemic
43、al analysis specimen in accordance with 3.4.1 from each melt for conformance to 3.1. 4.3.2 One or more preproduction castings in accordance with 4.4.1 of each part number. 4.3.3 Not less than four tensile specimens machined from a casting or castings from each heat treat lot except when cognizant en
44、gineering organization specifies use of separately-cast specimens as in 4.3.4. If specimen locations are not shown on the drawing, two specimens from the thickest section and two specimens from the thinnest section, shall be cut from a casting or castings from each heat treat lot. 4.3.4 One or more
45、separately-cast or integrally-cast tensile specimen in accordance with 3.4.2 from each heat treat lot when purchaser specifies use of separately-cast or integrally-cast specimens. 4.3.5 Specimens for stress-corrosion tests shall be tensile specimens (see 3.4.2) taken from the same areas of castings
46、as for tensile tests of specimens cut from castings. Whenever practicable, specimens shall be not less than 0.250 inch (6.35 mm) diameter at the reduced gage section. If tensile specimens are not cut from castings but are separately-cast or integrally cast, stress-corrosion specimens may be taken fr
47、om the separately-cast specimens or integrally cast specimens, as applicable. 4.4 Approval 4.4.1 Sample castings from new or reworked patterns and the casting procedure shall be approved by purchaser before castings for production use are supplied, unless such approval is waived by the cognizant eng
48、ineering organization. 4.4.2 Vendor shall establish, for production of sample castings of each part number, parameters for the process control factors which will produce acceptable castings; these shall constitute the approved casting procedure and shall be used for producing production castings. Wh
49、en applicable, the vendor shall also establish control factors for producing separately-cast tensile specimens but these control factors need not be identical to those used for production of castings. Method for production of separately-cast tensile specimens shall be consistent for all cast material. If necessary to make any change in parameters for the process control fa
