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 ther
2、efrom, 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
3、publication 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: +1 724-776-49
4、70 (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/AMS5350K AEROSPACE MATERIAL SPECIFICATION AMS5350 REV. K Issued 1947-12 Revised 2017-12 Supers
5、eding AMS5350J Steel, Corrosion and Moderate Heat-Resistant, Investment Castings 12.5Cr (410) Hardened and Tempered (Composition similar to UNS J91152) RATIONALE AMS5350K revises Reports (4.5) and Serialization (5.1.2), and is a Five-Year Review and update of this specification. 1. SCOPE 1.1 Form Th
6、is specification covers a corrosion and moderate heat-resistant steel in the form of investment castings. 1.2 Application These castings have been used typically for small parts, such as compressor blades and vanes, up to 1000 F (538 C), but usage is not limited to such applications. Corrosion resis
7、tance is higher than that of AMS5349, but machinability is worse. 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 document u
8、nless 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 15096-000
9、1, Tel: 877-606-7323 (inside USA and Canada) or +1 724-776-4970 (outside USA), www.sae.org. AMS2175 Castings, Classification and Inspection of AMS2248 Chemical Check Analysis Limits Corrosion and Heat-Resistant Steels and Alloys, Maraging and Other Highly-Alloyed Steels, and Iron Alloys AMS2360 Room
10、 Temperature Tensile Properties of Castings AMS2694 In-Process Welding of Castings SAE INTERNATIONAL AMS5350K Page 2 of 11 AMS2700 Passivation of Corrosion Resistant Steels AMS2804 Identification Castings AMS-H-6875 Heat Treatment of Steel Raw Materials ARP1917 Clarification of Terms Used in Aerospa
11、ce 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 E8/E8M Tension Testing of Metallic Materials ASTM E18 Rockwell Hardness of Metallic Materials ASTM E140 Conv
12、ersion Tables for Metals Relationship Among Brinell Hardness, Vickers Hardness, Rockwell Hardness, Superficial Hardness, Knoop Hardness, Scleroscope Hardness, and Leeb Hardness ASTM E353 Chemical Analysis of Stainless, Heat-Resisting, Maraging, and Other Similar Chromium-Nickel-Iron Alloys ASTM E141
13、7/E1417M Liquid Penetrant Testing ASTM E1444/E1444M Magnetic Particle Testing ASTM E1742/E1742M Radiographic Examination 3. TECHNICAL REQUIREMENTS 3.1 Composition Castings shall conform to the percentages by weight shown in Table 1, determined by wet chemical methods in accordance with ASTM E353, by
14、 spectrochemical methods, or by other analytical methods acceptable to purchaser (see 8.2.1). Table 1 - Composition Element Min Max Carbon Manganese Silicon Phosphorus Sulfur Chromium Nickel Molybdenum Aluminum Copper Tin 0.05 - - - - 11.50 - - - - - 0.15 1.00 1.00 0.04 0.03 13.50 0.50 0.50 0.05 0.5
15、0 0.05 SAE INTERNATIONAL AMS5350K Page 3 of 11 3.1.1 Producer may test for any element not listed in Table 1 and include this analysis in the report of 4.5. Limits of acceptability may be specified by purchaser (see 8.2.2). 3.1.2 Check Analysis Composition variations shall meet the applicable requir
16、ements of AMS2248. 3.2 Melting Practice Castings and specimens shall be poured at casting producers facility either from a melt (see 8.2.3) of a master heat, or directly from a master heat (see 8.2.4). 3.2.1 Revert (gates, sprues, risers, and rejected castings) may be used only in the preparation of
17、 master heats; revert shall not be remelted directly without refining for pouring of castings. Melting of revert creates a new master heat. 3.2.2 Portions of two or more qualified master heats (see 3.4.2) may be melted together and poured into castings using a procedure authorized by purchaser. 3.2.
18、3 If modifications, such as alloy additions or replenishments (see 8.2.7), are made by the producer at remelt, producer shall have a written procedure acceptable to purchaser which defines the controls, test, and traceability criteria for both castings and separately-cast specimens. Control factors
19、of 4.4.2.2 shall apply. 3.3 Condition Castings shall be delivered in the hardened and tempered condition. 3.4 Test Specimens Specimens shall be separately-cast, integrally-cast (see 8.2.5), or machined from a casting, and shall conform to 3.2. 3.4.1 If specimens are separately-cast, producer shall h
20、ave a written procedure acceptable to purchaser. Control factors of 4.4.2.2 shall apply. 3.4.2 Each master heat shall be qualified by evaluation of chemical, hardness and, when required, tensile specimens. 3.4.2.1 If alloy additions or replenishments are made at remelt as in 3.2.3, the frequency of
21、sampling and testing used by the producer for qualification to 3.4.2 shall be acceptable to purchaser. 3.4.2.2 Tensile tests of 3.4.2 are not required if these tests are conducted using integrally-cast specimens (4.3.3.2) or specimens machined from a casting (4.3.3.3). 3.4.3 Chemical Analysis Specim
22、ens Shall be of any convenient size and shape. 3.4.4 Tensile Specimens Shall be of standard proportions in accordance with ASTM E8/E8M with 0.250 inch (6.35 mm) diameter at the reduced parallel gage section. 3.4.4.1 Separately-cast and integrally-cast specimens may be either cast to size, or cast ov
23、ersize and subsequently machined to 0.250 inch (6.35 mm) diameter. 3.4.4.2 When integrally-cast specimens and specimens machined from a casting are specified, specimen size and location shall be agreed upon by purchaser and producer. SAE INTERNATIONAL AMS5350K Page 4 of 11 3.4.5 Hardness Specimens f
24、or Response to Heat Treatment May be a representative specimen or a casting. 3.5 Heat Treatment To produce the condition in castings for delivery, harden by cooling at a rate equivalent to air cool from the austenitizing temperature and temper to conform to hardness of 3.6.2. Hardening and tempering
25、 shall be in accordance with AMS-H-6875. 3.5.1 Response to Heat Treatment Castings or representative test specimens shall be heat treated as in 3.5, and then as in 3.5.1.1 and 3.5.1.2, for subsequent testing to demonstrate response to heat treatment. 3.5.1.1 Hardening Heat to 1750 F 10 F (954 C 6 C)
26、, hold at heat for 60 minutes 5 minutes per inch of maximum cross section, and cool at a rate equivalent to air cool. 3.5.1.2 Tempering Heat to 1350 F 15 F (732 C 8 C), hold at heat for 60 minutes 5 minutes per inch of maximum cross section and cool in air. 3.5.2 Tensile specimens used for master he
27、at qualification may be heat treated separately from castings. 3.6 Properties Conformance shall be based upon testing of separately-cast specimens unless purchaser specifies integrally-cast specimens or specimens machined from a casting. Properties for integrally-cast specimens and specimens machine
28、d from a casting shall be as specified by purchaser (see 8.5). 3.6.1 Room Temperature Tensile Properties Shall be as shown in Table 2, determined in accordance with ASTM E8/E8M after heat treatment in accordance with 3.5.1.2. Properties other than those listed may be defined as specified in AMS2360.
29、 3.6.1.1 Separately-Cast Specimens Shall be as shown in Table 2. Table 2 - Minimum tensile properties Property Value Tensile Strength Yield Strength at 0.2% Offset Elongation in 4D Reduction of Area 95.0 ksi (656 MPa) 75.0 ksi (517 MPa) 8% 20% 3.6.2 Hardness of Production Castings Shall be 90 to 105
30、 HRB or equivalent (see 8.3), determined in accordance with ASTM E18 for the heat treat condition of 3.3. and 3.5. SAE INTERNATIONAL AMS5350K Page 5 of 11 3.6.3 Hardnesses as a Response to Heat Treatment Shall be as follows, determined in accordance with ASTM E18. 3.6.3.1 Castings and Representative
31、 Specimens as Hardened (see 3.5.1.1) Shall have a hardness not lower than 35 HRC, or equivalent (see 8.3). 3.6.3.2 Castings and Representative Specimens as Hardened and Tempered (see 3.5.1.2) Should have a hardness of 94 to 100 HRB, or equivalent (see 8.3), but castings shall not be rejected on the
32、basis of hardness if the tensile properties of 3.6.1 are met. 3.7 Quality 3.7.1 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. Castings shall be free of cracks, laps, h
33、ot tears, and cold shuts, and free of scale and other process induced surface contamination which would obscure defects. 3.7.1.1 Unless otherwise specified, castings shall be sufficiently cleaned such that, after passivation by purchaser, the castings shall meet the corrosion test requirement of AMS
34、2700. 3.7.2 Castings shall be produced under radiographic control. This control shall consist of radiographic examination of each casting part number until foundry manufacturing controls in accordance with 4.4.2 have been established. Additional radiography shall be conducted in accordance with the
35、frequency of inspection specified by purchaser, or as necessary to ensure continued maintenance of internal quality. 3.7.2.1 Radiographic inspection shall be conducted in accordance with ASTM E1742/E1742M or another method specified by purchaser. 3.7.3 When specified, additional nondestructive testi
36、ng shall be performed as follows: 3.7.3.1 Fluorescent penetrant inspection in accordance with ASTM E1417/E1417M or another method specified by purchaser. 3.7.3.2 Magnetic particle inspection in accordance with ASTM E1444/E1444M or another method specified by purchaser. 3.7.4 Acceptance standards for
37、 radiographic, fluorescent penetrant, magnetic particle, visual, and other inspection methods shall be agreed upon by purchaser and producer. AMS2175 may be used to specify acceptance standards (casting grade) and frequency of inspection (casting class). 3.7.4.1 When acceptance standards are not spe
38、cified, Grade C of AMS2175 as applicable to steel castings shall apply for each applicable method of inspection. 3.7.5 Castings shall not be peened, plugged, impregnated, or welded unless authorized by purchaser. 3.7.5.1 When authorized by purchaser, welding in accordance with AMS2694 or another wel
39、ding program acceptable to purchaser may be used. 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 of all required tests. Purchaser reserves the right to sample and to
40、perform any confirmatory testing deemed necessary to ensure that the castings conform to specified requirements. SAE INTERNATIONAL AMS5350K Page 6 of 11 4.2 Classification of Tests 4.2.1 Acceptance Tests Composition (3.1), hardness of production castings (3.6.2), response to heat treatment after har
41、dening (3.6.3.1), and applicable requirements of quality (3.7) are acceptance tests and shall be performed as specified in 4.3. 4.2.2 Periodic Tests Tensile properties (3.6.1), response to heat treatment after hardening and tempering (3.6.3.2), and radiographic soundness (3.7.2) are periodic tests a
42、nd shall be performed at a frequency selected by 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 sample castings (4.3.2), when a change in control factors occurs (4.4.2.2), or when
43、 purchaser deems confirmatory testing to be required. 4.3 Sampling and Testing The minimum testing performed by producer shall be in accordance with the following: 4.3.1 One chemical analysis specimen or a casting from each master heat shall be tested for conformance with Table 1; if 3.4.2.1 applies
44、, test frequency shall be acceptable to purchaser. 4.3.2 One preproduction casting in accordance with 4.4 shall be tested to the requirements of the casting drawing and to all technical requirements. 4.3.2.1 Dimensional inspection sample quantity shall be as specified by purchaser. 4.3.3 When tensil
45、e tests are required, they shall be conducted to determine conformance with Table 2. Sampling and test frequency is dependent upon the type and origin of specimen specified by purchaser (see 3.4.4) or selected by producer (see 4.3.3.4). When 3.4.2.1 applies, test frequency shall be acceptable to pur
46、chaser. 4.3.3.1 For separately-cast specimens in the fully heat-treated condition of 3.5.1.2, one specimen from each master heat shall be tested for conformance to 3.6.1. 4.3.3.2 For integrally-cast specimens in the fully heat-treated condition of 3.5.1.2, two specimens from each lot (see 8.2.6) sha
47、ll be randomly selected and tested for conformance to properties specified by purchaser. 4.3.3.3 For specimens machined from a casting, one casting shall be randomly selected from each lot and tested after heat treatment in accordance with 3.5.1.2 at each location shown on the engineering drawing fo
48、r conformance to the properties specified by purchaser. 4.3.3.3.1 When size and location of specimens are not shown, two test specimens shall be tested, one from the thickest section and one from the thinnest section. Once established under 4.4.2.2, test locations may be changed only as agreed upon
49、by purchaser and producer. 4.3.3.4 When acceptable to purchaser, specimens machined from a casting may be used in lieu of both separately-cast and integrally-cast specimens, and integrally-cast specimens may be used in lieu of separately-cast specimens. In each case, the resultant properties must conform to the requirements of 3.6.1 or to alternative requirements specified by purchaser (see 8.5). 4.3.3.4.1
