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    SAE AMS 4284K-2017 Aluminum Alloy Castings Permanent Mold 7 0Si - 0 30Mg (356 0-T6) Solution and Precipitation Heat Treated (UNS A03560).pdf

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    SAE AMS 4284K-2017 Aluminum Alloy Castings Permanent Mold 7 0Si - 0 30Mg (356 0-T6) Solution and Precipitation Heat Treated (UNS A03560).pdf

    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/AMS4284K AEROSPACE MATERIAL SPECIFICATION AMS4284 REV. K Issued 1985-07 Reaffirmed 2006-04 Revi

    5、sed 2017-03Superseding AMS4284J Aluminum Alloy Castings, Permanent Mold 7.0Si - 0.30Mg (356.0-T6) Solution and Precipitation Heat Treated (Composition similar to UNS A03560)RATIONALE AMS4284K revises radiographic acceptance (3.7.1) and results from a Five-Year Review and update of this specification

    6、. 1. SCOPE 1.1 Form This specification covers an aluminum alloy in the form of permanent mold castings. 1.2 Application These castings have been used typically for components requiring low weight, moderate strength, and soundness, but usage is not limited to such applications. 2. APPLICABLE DOCUMENT

    7、S 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 been canc

    8、elled 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 +1 724-776-4970 (outside USA), www.sae.o

    9、rg. AMS2175 Casting, Classification and Inspection of AMS2360 Room Temperature Tensile Properties of Castings AMS2694 In-Process Welding of Castings SAE INTERNATIONAL AMS4284K Page 2 of 7 AMS2771 Heat Treatment of Aluminum Alloy Castings AMS2804 Identification Castings ARP1917 Clarification of Terms

    10、 Used in Aerospace Metals Specifications 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 Products ASTM B557M Tens

    11、ion Testing Wrought and Cast Aluminum- and Magnesium-Alloy Products (Metric) ASTM B660 Packaging/Packing of Aluminum and Magnesium Products ASTM E10 Brinell Hardness of Metallic Materials ASTM E29 Using Significant Digits in Test Data to Determine Conformance with Specifications ASTM E34 Chemical An

    12、alysis of Aluminum and Aluminum-Base Alloys ASTM E607 Optical 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 Sp

    13、ectrochemical Analysis ASTM E1251 Analysis of Aluminum and Aluminum Alloys by Atomic Emission Spectrometry ASTM E1417/E1417M Liquid Penetrant Testing ASTM E1742/E1742M Radiographic Examination 3. TECHNICAL REQUIREMENTS 3.1 Composition Shall conform to the percentages by weight shown in Table 1, dete

    14、rmined by wet chemical methods in accordance with ASTM E34, by spectrochemical methods in accordance with ASTM E607, or ASTM E1251, or by other analytical methods acceptable to purchaser (see 3.4.1). Table 1 - Composition Element (3.1.1) Min Max Silicon 6.5 7.5 Iron - 0.6 Copper - 0.25 Manganese - 0

    15、.35 Magnesium 0.20 0.45 Zinc - 0.35 Titanium - 0.25 Other Elements, each - 0.05 Other Elements, total - 0.15 Aluminum remainder SAE INTERNATIONAL AMS4284K Page 3 of 7 3.1.1 Test results may be rounded by the “rounding off“ method of ASTM E29. 3.2 Condition Solution and precipitation heat treated. 3.

    16、3 Castings 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

    17、 each melt 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 3.4.2.1 Unless specimens cut from a casting are specified by purchaser, separately-cast specimens conforming t

    18、o ASTM B557 or ASTM B557M shall be cast from each melt after the last melt addition. Specimens shall be cast in permanent molds. 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 e

    19、ach heat treat lot and tested for conformance to 3.6.1. 3.4.2.2 When purchaser specifies specimens cut from a casting, such specimens shall be removed after heat treatment, shall conform to ASTM B557 or ASTM B557M, and shall be either 0.500 inch (12.70 mm) diameter at the reduced parallel gage secti

    20、on, subsize specimens proportional to the standard, or standard sheet-type specimens, as required by 3.6.1. 3.5 Heat Treatment Shall be in accordance with AMS2771. Unless specimens cut from a casting are specified, one or more sets of separately-cast tensile specimens shall, during each stage of hea

    21、t treatment, be put into a batch-type furnace with each load of castings or into a continuous furnace at intervals of not longer than 3 hours. 3.6 Properties Castings and separately-cast tensile specimens shall conform to the following requirements: 3.6.1 Tensile Properties Shall be as follows, dete

    22、rmined in accordance with ASTM B557 or ASTM B557M; conformance to the requirements of 3.6.1.1 shall be used as the basis for acceptance of castings except when purchaser specifies that 3.6.1.2 applies. 3.6.1.1 Separately-Cast Specimens Specimens as in 4.3.2 shall have the properties shown in Table 2

    23、. SAE INTERNATIONAL AMS4284K Page 4 of 7 Table 2 - Minimum tensile properties for separately-cast specimens Property Value Tensile Strength 33.0 ksi (228 MPa) Yield Strength at 0.2% Offset 22.0 ksi (152 MPa) Elongation in 4D 3.0% 3.6.1.2 Specimens Cut from Castings Specimens as in 4.3.4 shall have t

    24、he properties shown in Table 3. Table 3 - Minimum tensile properties Property Value Tensile Strength 25.0 ksi (172 MPa) Yield Strength at 0.2% Offset 16.0 ksi (110 MPa) Elongation in 4D 0.7% 3.6.1.2.1 When properties other than those of 3.6.1.2 are required, tensile specimens taken from locations in

    25、dicated 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. Property requirements may be designated in accordance with AMS2360. 3.7 Quality Castings, as received by purchaser, shall be uniform in qua

    26、lity 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 specified, castings shall meet Grade C of AMS2175 and radiographic indications of gas holes, sand spots, and inclusions shall be cause for r

    27、ejection when closer to the edge than twice their maximum dimension. 3.7.2 Methods of inspection and frequency of inspection shall be as agreed upon by purchaser and producer. A “Casting Class“ of AMS2175 may be selected to specify the method and frequency of inspection. 3.7.3 Castings shall be prod

    28、uced under radiographic control. 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 productio

    29、n castings shall be performed at a frequency determined by the producer to ensure continued maintenance of internal quality. 3.7.4 Radiographic inspection shall be conducted in accordance with ASTM E1742/E1742M, unless otherwise specified by purchaser. 3.7.5 When specified by purchaser, castings sha

    30、ll be fluorescent penetrant inspected using a method specified by purchaser, or, if not specified, a method in accordance with ASTM E1417/E1417M. 3.7.6 Castings shall not be peened, plugged, impregnated, or welded unless authorized by purchaser. 3.7.6.1 When authorized by purchaser, welding in accor

    31、dance with AMS2694 or other welding program approved by purchaser may be used. SAE INTERNATIONAL AMS4284K Page 5 of 7 4. QUALITY ASSURANCE PROVISIONS 4.1 Responsibility for Inspection The producer of castings shall supply all samples for producers tests and shall be responsible for the performance o

    32、f all required tests. Purchaser reserves the right to sample 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 Except as specified in 4.2.1.1, composition (3.1), tensile propertie

    33、s of separately-cast specimens (3.6.1.1), and quality (3.7) are acceptance tests and shall be performed to represent each melt or heat treat lot as applicable. 4.2.1.1 Tensile properties of specimens cut from castings shall be determined when specified by purchaser or when separately-cast specimens

    34、are not available. Tensile properties of separately-cast specimens need not be determined when tensile properties of specimens cut from castings are determined. 4.2.2 Periodic Tests Radiographic inspection (3.7.3) following the establishment of process control (4.4.2) is a periodic test and shall be

    35、 performed at a frequency selected by the producer unless frequency of testing is specified by purchaser. 4.2.3 Preproduction Tests All technical requirements are preproduction tests and shall be performed on the first-article shipment of a casting to a purchaser, when a change in material and/or pr

    36、ocessing requires reapproval 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: 4.3.1 At least one chemical analysis specimen in accordance with 3.4.1 from each melt for conformance to 3.1. 4.3.2 One or more

    37、separately-cast tensile specimens in accordance with 3.4.2 from each heat treat lot, except when purchaser specifies specimens cut from a casting as in 4.3.4. 4.3.3 One or more preproduction castings in accordance with 4.4.1 of each part number. 4.3.4 One or more castings from each heat treat lot wh

    38、en properties are required from specimens cut from castings. For determining conformance to the requirements of 3.6.1.2.1, 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

    39、from each heat treat lot. 4.4 Approval 4.4.1 Sample castings from new or reworked tooling (i.e., patterns, molds, dies, etc.) and the casting procedure shall be approved by purchaser before castings for production use are supplied, unless such approval be waived by purchaser. SAE INTERNATIONAL AMS42

    40、84K Page 6 of 7 4.4.2 Producer 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. Produce

    41、r 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

    42、 any change in parameters for the process control factors, producer shall submit for reapproval a statement of the proposed changes in processing and, when requested, test specimens, sample castings, or both. Production castings incorporating the revised operations shall not be shipped prior to rece

    43、ipt of reapproval. 4.4.2.1 Control factors for producing tensile specimens and castings include, but are not limited to, the following. Suppliers procedures shall identify tolerances, ranges, and/or control limits, as applicable. Control factors for separately-cast tensile specimens must generally r

    44、epresent, but need not be identical to, those factors used for castings: Type 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 M

    45、etal pouring temperature; variation of 50 F (28 C) from the established limit is permissible Solidification and cooling procedures Solution/precipitation heat treat cycles Straightening procedure, when applicable Cleaning operations Methods of inspection Radiographic inspection sampling plan, if use

    46、d 4.4.2.1.1 Any of the above process control factors for which parameters are considered proprietary by the producer may be assigned a code designation. Each variation in such parameters shall be assigned a modified code designation. 4.5 Reports The producer of castings shall furnish with each shipm

    47、ent a report showing the results of tests for composition of each melt and the results of tests for tensile properties of separately-cast specimens representing each heat treat lot or of specimens cut from a casting from each heat treat lot, and stating that the castings conform to the other technic

    48、al requirements. This report shall include the purchase order number, melt and heat treat lot numbers, AMS4284K, part number, and quantity. 4.6 Resampling and Retesting If any specimen used in the above tests fails to meet specified requirements, disposition of the castings may be based on the resul

    49、ts of testing two additional specimens for each original nonconforming specimen. Failure of any retest specimen to meet the specified requirements shall 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 compl


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