1、_ 6$(7HFKQLFDO6WDQGDUGV%RDUG5XOHVSURYLGHWKDW7KLVUHSRUWLVSX EOLVKHGE6$(WRDGYDQFHWKHVWDWHRIWHFKQLFDODQGHQJL neering 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 thHVROHUHVSR
2、QVLELOLWRIWKHXVHU 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 2016 SAE International All rights reserved. No part of this publication may be reproduced,
3、 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 (outside USA) Fax: 724-776-
4、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/AMS4212L AEROSPACE MATERIAL SPECIFICATION AMS4212 REV. L Issued 1940-10 Revised 2016-11 Superseding AMS4212K Aluminum Alloy
5、Castings 5.0Si - 1.2Cu - 0.50Mg (355.0-T6) Solution and Precipitation Heat Treated (Composition similar to UNS A03550) RATIONALE AMS4212L revises Condition (3.2) and is a Five-Year Review and update of this specification. 1. SCOPE 1.1 Form This specification covers an aluminum alloy in the form of c
6、astings. 1.2 Application These castings have been used typically for components requiring high strength at room and elevated 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 p
7、art 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 last published issue of that docum
8、ent 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. AMS2175 Castings, Classification and Inspection of AMS2360 Room Temperature Tensile Prop
9、erties of Castings AMS2694 In-Process Welding of Castings AMS2771 Heat Treatment of Aluminum Alloy Castings SAE INTERNATIONAL AMS4212L Page 2 of 8 AMS2804 Identification Castings ARP1917 Clarification of Terms Used in Aerospace Metals Specifications 2.2 ASTM Publications Available from ASTM Internat
10、ional, 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 Products ASTM B557M Tension Testing Wrought and Cast Aluminum- and Magnesium-Alloy Products (Metric) ASTM B660 Pack
11、aging/Packing of Aluminum and Magnesium Products ASTM E10 Brinell Hardness of Metallic Materials ASTM E18 Rockwell Hardness of Metallic Materials ASTM E29 Using Significant Digits in Test Data to Determine Conformance with Specifications ASTM E34 Chemical Analysis of Aluminum and Aluminum-Base Alloy
12、s ASTM E607 Atomic Emission Spectrometric Analysis of Aluminum and 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
13、of Aluminum and Aluminum Alloys by Spark Emission Spectrometry ASTM E1417/E1417M Liquid Penetrant Testing ASTM E1742/E1742M Radiographic Examination 2.3 ANSI Accredited Publications Copies of these documents are available online at http:/webstore.ansi.org/. ANSI H35.1/H35.1M Standard Alloy and Tempe
14、r Designation Systems for Aluminum SAE INTERNATIONAL AMS4212L Page 3 of 8 3. TECHNICAL REQUIREMENTS 3.1 Composition Shall conform to the percentages by weight shown in Table 1, determined by wet chemical methods in accordance with ASTM E34, by spectrochemical methods in accordance with ASTM E607, AS
15、TM E1251, or by other analytical methods acceptable to purchaser (see 3.3.1.1). Table 1 - Composition Element Min. Max. Silicon Iron (3.1.1) Copper Manganese (3.1.1) Magnesium Chromium Zinc Titanium Other Elements, each Other Elements, total Aluminum 4.5 - 1.0 - 0.40 - - - - - remainder 5.5 0.6 1.5
16、0.50 0.6 0.25 0.35 0.25 0.05 0.15 3.1.1 If iron content exceeds 0.45%, manganese content shall be not less than one-half of the iron content. 3.1.2 7HVWUHVXOWVPDEHURXQGHGLQDFFRUGDQFHZLWKWKHURXQGLQJRIIPHWKRGRI$670 E29. 3.2 Condition Solution and precipitation heat treated to the T6 temper (see ANSI H
17、35.1/H35.1M). 3.3 Cast Test Specimens 3.3.1 Chemical analysis specimens and tensile specimens shall be cast as follows: 3.3.1.1 Chemical Analysis Specimen Shall be cast from each melt after the last melt addition and shall be tested to qualify the melt lot as in 3.1. Spectrochemical sample shall be
18、prepared in accordance with ASTM E716. 3.3.2 Tensile Specimens Shall be produced as follows: 3.3.2.1 Specimens Cut from a Casting and Specimens from Integrally Cast Coupons Shall be removed after heat treatment, shall conform to ASTM B557 or ASTM B557M and shall be either 0.500 inch (12.70 mm) diame
19、ter at the reduced parallel gage section, standard sheet type specimens, or subsize specimens proportional to the standard. 3.3.2.2 Separately Cast Specimens Shall conform to ASTM B557 or ASTM B557M and shall be cast from each melt after the last melt additions. Specimens shall be cast in molds repr
20、esenting the mold formulation 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. Tensile specimens shall be processed with each heat treat lot and tested for conformance to 3.5.1. SAE INTERNATIONAL AMS42
21、12L Page 4 of 8 3.4 Heat Treatment Castings and representative tensile specimens (3.3.2) shall be solution and precipitation heat treated in accordance with AMS2771 except that set temperature and soak time shall be 300 to 320 qF (149 to 160 qC) for 1 to 6 hours. Unless specimens cut from a casting
22、or integrally-cast coupons are specified, separately-cast tensile specimens shall be put into a batch-type furnace with each load of castings or into a continuous furnace at intervals not longer than 3 hours. 3.5 Properties Castings, integrally-cast coupons, and separately cast tensile specimens sha
23、ll conform to the following requirements: 3.5.1 Tensile Properties Shall be as follows, determined in accordance with ASTM B557 or ASTM B557M; conformance to the requirements of 3.5.1.1 shall be used as basis for acceptance of castings except when purchaser specifies that requirements of 3.5.1.2 or
24、3.5.1.3 apply: 3.5.1.1 Separately-Cast Specimens Shall have the properties shown in Table 2. Table 2 - Minimum tensile properties Property Value Tensile Strength Yield Strength at 0.2% Offset Elongation in 4D 32.0 ksi (221 MPa) 20.0 ksi (138 MPa) 2.0% 3.5.1.2 Specimens Cut from Castings or from Inte
25、grally-Cast Coupons Specimens cut from castings (see 3.3.2.1) or from integrally-cast coupons, as specified, shall have the properties shown in Table 3. Table 3 - Minimum tensile properties Property Value Tensile Strength Yield Strength at 0.2% Offset Elongation in 4D 24.0 ksi (165 MPa) 15.0 ksi (10
26、3 MPa) 0.5% 3.5.1.3 Specimens Cut from Designated Casting Areas When specified by purchaser, specimens taken from locations indicated on the drawing, shall meet tensile property requirements specified on the drawing. Property requirements may be designated in accordance with AMS2360. 3.6 Quality Cas
27、tings, 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. 3.6.1 When acceptance standards are not specified, Grade C of AMS2175 shall apply. 3.6.2 0HWKRGVRILQVSHFWLRQDQGIUHTXHQFRILQV
28、SHFWLRQVKDOOEHDVDJUHHGXSRQE SXUFKDVHUDQGYHQGRU$ these shall constitute the approved casting procedure and shall be used for producing production castings. Vendor shall also establish control factors for producing separately cast tensile specimens, but these control factors need not be identical to t
29、hose used for production of castings. If necessary to make any change in parameters for the process control factors, vendor shall submit for reapproval a statement of the proposed changes in processing and, when requested, sample castings, test specimens, or both. Production castings incorporating t
30、he revised operations shall not be shipped prior to receipt of reapproval. 4.4.2.1 Control factors for producing castings and separately cast tensile specimens include, but are not limited to the IROORZLQJ6XSSOLHUs procedures shall identify tolerances, ranges and/or control limits as applicable. Typ
31、e of furnace Furnace atmosphere Alloy additions, fluxing, deoxidation, and gas removal procedures Gating and risering practices Mold composition and molding practice Core composition and fabrication method, when applicable Melt pouring temperature Solidification and cooling procedures Solution heat
32、treat and precipitation hardening cycles Straightening procedure, when applicable Cleaning operations Methods of inspection Radiographic inspection sampling plan, if used. 4.4.2.1.1 Any of the above process control factors for which parameters are considered proprietary by the vendor may be assigned
33、 a code designation. Each variation in such parameters shall be assigned a modified code designation. SAE INTERNATIONAL AMS4212L Page 7 of 8 4.5 Reports The vendor of castings shall furnish with each shipment a report showing the results of tests for composition of each melt and the results of tests
34、 for tensile properties of separately-cast specimens representing each heat treat lot, and stating that the castings conform to the other technical requirements. This report shall include the purchase order number, melt and heat treat lot numbers, AMS4212L, part number, and quantity. 4.6 Resampling
35、and Retesting If any specimen used in the above tests fails to meet the specified requirements, disposition of the castings may be based on the results of testing two additional specimens for each original nonconforming specimen. Failure of any retest specimen to meet the specified requirements shal
36、l be cause for rejection of the castings represented. Results of all tests shall be reported. 5. PREPARATION FOR DELIVERY 5.1 Identification Shall be in accordance with AMS2804. 5.2 Packaging Castings shall be prepared for shipment in accordance with ASTM B660 and in compliance with applicable rules
37、 and regulations pertaining to the handling, packaging, and transportation of the castings to ensure carrier acceptance and safe delivery. 6. ACKNOWLEDGMENT A vendor shall mention this specification number and its revision letter in all quotations and when acknowledging purchaser orders. 7. REJECTIO
38、NS Castings 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 (l) located in the left margin is for the convenience of the user in locating areas where technical revisions, not editorial chang
39、es, 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 revisions. Change bars and (R) are not used in original publications, nor in documents that contain editorial changes only. 8.
40、2 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. 8.3 Terms used in AMS are clarified in
41、 ARP1917 or otherwise defined as follows: 8.3.1 Melt All castings poured from a single furnace charge. Also, referred to as remelt, submelt, heat, or subheat. 8.3.2 Heat Treat Lot All castings of the same part number, poured from a single melt, and solution and precipitation heat treated in the same
42、 heat treat batch. SAE INTERNATIONAL AMS4212L Page 8 of 8 8.3.3 Integrally Cast Coupon An attached prolongation that is cast in the mold, remains with the casting lot through completion of all heat treatment operations required of vendor, and is then cut to produce tensile specimen(s). The casting d
43、rawing may identify a specific location for the attachment of the integrally cast coupon(s). 8.3.4 Purchaser The cognizant engineering organization responsible for casting design and fitness for use of the designee of that organization. 8.3.5 Specified Requires documented instruction from purchaser
44、through casting drawing, purchase order, specification, or other engineering documentation. 8.4 Hardness of Castings Hardness of castings, except at sprue and riser locations, shall have hardness of 65 to 105 HB/10/500 or 70 to 105 HB/10/1000, determined in accordance with ASTM E10, or 27 to 75 HRB,
45、 determined in accordance with ASTM E18. Hardness has been used to verify that product is properly processed, EXWDQRXW -of-VSHFLILFDWLRQKDUGQHVVQXPEHULVQRWDOZDVLQGLFDWLYHRISURGXFWZLWKRXWRIVSHFLILFDWLRQWHQVLOHVWUHQJWK )XUWKHUDQDOVLVLQFOXGLQJPDWHULDOFRPSRVLWLRQverification, heat treat process paramete
46、r review, and/or tensile property measurement on product with out-of-specification hardness may be necessary. 8.5 Purchase documents should specify not less than the following: AMS4212L Part number or pattern number of castings desired Quantity of castings desired When permitted, tensile properties from integrally cast coupons or from specimens machines from castings Nondestructive inspection acceptance standards (see 3.6). PREPARED BY AMS COMM,77(
