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 reaffirmed, revised, or cancelled. SAE invites your written comments and suggestions. Copyright 2013 SAE International All rights reserved. No part of this publication m
3、ay 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: +1 724-776-4970 (outside U
4、SA) 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/AMS5349E AEROSPACE MATERIAL SPECIFICATION AMS5349 REV. E Issued 1963-07 Revised 2013-06 Super
5、seding AMS5349D Steel, Corrosion-Resistant, Investment Castings 13Cr Free Machining; Hardened and Tempered (Composition similar to UNS J91161) RATIONALE AMS5349E revises the tempering temperature for response to heat treatment (3.5.1.2) 1. SCOPE 1.1 Form This specification covers a corrosion-resista
6、nt steel in the form of investment castings. 1.2 Application These castings have been used typically for small parts up to 1000 F (538 C), but usage is not limited to such applications. Corrosion resistance is lower than that of AMS5350, but machinability is better. 1.3 Classification Castings are c
7、lassified by chemistry as follows: Type 1 - Sulfur content Type 2 - Selenium content Unless a specific type is ordered, either type may be supplied. 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 exte
8、nt 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 document shall apply. SAE AMS5349E Page 2
9、of 11 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.sae.org. AMS2175 Castings, Classification and Inspection of AMS2248 Chemical Check Analysis Limits, Corrosion a
10、nd Heat-Resistant Steels and Alloys, Maraging and Other Highly-Alloyed Steels, and Iron Alloys AMS2360 Room Temperature Tensile Properties of Castings AMS2694 Repair Welding of Aerospace Castings AMS2700 Passivation of Corrosion Resistant Steels AMS2804 Identification, Castings 2.2 ASTM Publications
11、 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 E 8/E 8M Tension Testing of Metallic Materials ASTM E 18 Rockwell Hardness and Rockwell Superficial Hardness of Metallic Materials ASTM E 353 Chemical Ana
12、lysis of Stainless, Heat Resisting, Maraging, and Other Similar Chromium-Nickel-Iron Alloys ASTM E 1417 Liquid Penetrant Testing ASTM E 1444 Magnetic Particle Testing ASTM E 1742 Radiographic Examination 3. TECHNICAL REQUIREMENTS 3.1 Composition Shall conform to the percentages by weight shown in Ta
13、ble 1, determined by wet chemical methods in accordance with ASTM E 353, by spectrochemical methods, or by other analytical methods acceptable to purchaser (See 8.2.1 and 8.2.2). SAE AMS5349E Page 3 of 11 TABLE 1 - COMPOSITION Element Type I min Type I max Type II min Type II max Carbon Manganese Si
14、licon Phosphorus Sulfur Selenium Chromium Nickel Molybdenum Aluminum Copper Zirconium Tin - - - - 0.15 - 11.50 - - - - - - 0.15 1.25 1.50 0.040 0.35 - 14.00 0.50 0.50 0.05 0.50 0.50 0.05 - - - - - 0.10 11.50 - - - - - - 0.15 1.25 1.50 0.040 0.03 0.30 14.00 0.50 0.50 0.05 0.50 0.50 0.05 3.1.1 Vendor
15、may test for any element not otherwise listed in Table 1 and include this analysis in the report of 4.5. Limits of acceptability may be specified by purchaser (See 8.2.3). 3.1.2 Check Analysis Composition variations shall meet the applicable requirements of AMS2248. 3.1.3 Unless otherwise specified
16、by purchaser, either composition may be supplied. 3.2 Melting Practice Castings and specimens shall be poured at casting vendors facility either from a melt (See 8.2.4) of a master heat, or directly from a master heat (See 3.4.2 and 8.2.5). 3.2.1 Revert (gates, sprues, risers, and rejected castings)
17、 may be used only in the preparation of 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
18、procedure authorized by purchaser (See 8.2.6). 3.2.3 If melts are modified by replenishment (See 8.2.7), vendor 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 of 4.4.2
19、.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 8.2.8), or machined from a casting, and shall conform to 3.2. 3.4.1 If specimens are separately-cast, vendor shall have a writ
20、ten procedure acceptable to purchaser. Control factors of 4.4.2.2 shall apply. SAE AMS5349E Page 4 of 11 3.4.2 Each master heat shall be qualified by evaluation of chemical, hardness, and tensile specimens. 3.4.2.1 If replenishments are made at remelt as in 3.2.3, the frequency of sampling and testi
21、ng used by the vendor 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-casting (4.3.3.3). 3.4.3 Chemical Analysis Specimens Shall be of any co
22、nvenient size and shape. 3.4.4 Tensile Specimens Shall be of standard proportions in accordance with ASTM E 8/E 8M 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 oversize and subsequen
23、tly machined to 0.250-inch (6.35-mm) diameter. 3.4.4.2 When integrally-cast specimens and/or specimens machined-from-casting are specified, specimen size and location shall be agreed upon by purchaser and vendor (See 8.2.9 and 8.6). 3.4.5 Hardness Specimens for Response to Heat Treatment May be a re
24、presentative 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 at temperatures and for times to conform to hardness of 3.6.2.1. 3.5.1 Response to Heat Treatment
25、 Castings or representative test specimens shall be heat treated as follows for subsequent testing to demonstrate response to heat treatment. 3.5.1.1 Hardening Heat to 1750 F 10 (954 C 6), hold at heat for 60 minutes per inch (25-mm) of maximum cross section but not less than 30 minutes, and cool at
26、 a rate equivalent to air cool. 3.5.1.2 Hardening and Tempering Heat to 1750 F 10 (954 C 6), hold at heat for 30 minutes 3, and cool at a rate equivalent to still air cool. Heat to 1350 F 15 (732 C 8), hold at heat for 60 minutes per inch (25-mm) of maximum cross section but not less than one hour,
27、and cool in air or inert gas. 3.5.2 Tensile specimens used for master heat 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-c
28、asting. Properties for integrally-cast specimens and specimens machined-from-casting shall be as specified by purchaser (See 8.5). SAE AMS5349E Page 5 of 11 3.6.1 Room Temperature Tensile Properties Shall be as specified in Table 2, determined in accordance with ASTM E 8/E 8M (See 8.3), after heat t
29、reatment in accordance with 3.5.1.2. Properties other than those listed may be defined as specified in AMS2360. 3.6.1.1 Separately-Cast Specimens Shall be as shown in Table 2. TABLE 2 - MINIMUM ROOM TEMPERATURE TENSILE PROPERTIES OF SEPARATELY-CAST SPECIMENS Property Value Tensile Strength Yield Str
30、ength at 0.2% Offset Elongation in 4D (See 8.3) Reduction of Area 90.0 ksi (621 MPa) 65.0 ksi (448 MPa) 8% 15% 3.6.2 Hardness Shall be as follows, determined in accordance with ASTM E 18. 3.6.2.1 Hardness of Production Castings Shall be 90 to 105 HRB or equivalent (See 8.3), for the heat treat condi
31、tion of 3.3. and 3.5. 3.6.2.2 Hardnesses as a Response to Heat Treatment Shall be as follows: 3.6.2.2.1 Castings and Representative Specimens as Hardened (See 3.5.1.1) Shall have a hardness not lower than 35 HRC, or equivalent (See 8.3). 3.6.2.2.2 Castings and Representative Specimens as Hardened an
32、d Tempered (See 3.5.1.2) Should have a hardness of 90 to 100 HRB, or equivalent (See 8.3), but castings shall not be rejected on the 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, a
33、nd free from foreign materials and from imperfections detrimental to usage of the castings. Castings shall be free of cracks, laps, hot 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 s
34、hall be sufficiently cleaned such that, after passivation by purchaser, the castings shall meet the corrosion test requirement of AMS2700. 3.7.2 Castings shall be produced under radiographic control. This control shall consist of radiographic examination of each casting part number until foundry man
35、ufacturing controls in accordance with 4.4.2 have been established. Additional radiography shall be conducted in accordance with the 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
36、 in accordance with ASTM E 1742 or other method specified by purchaser. SAE AMS5349E Page 6 of 11 3.7.3 When specified, additional nondestructive testing shall be performed as follows: 3.7.3.1 Fluorescent penetrant inspection in accordance with ASTM E 1417 or other method specified by purchaser. 3.7
37、.3.2 Magnetic particle inspection in accordance with ASTM E 1444 or other method specified by purchaser. 3.7.4 Acceptance standards for radiographic, fluorescent penetrant, magnetic particle, visual, and other inspection methods shall be agreed upon by purchaser and vendor. AMS2175 may be used to sp
38、ecify acceptance standards (casting grade) and frequency of inspection (casting class). 3.7.4.1 When acceptance standards are not specified, 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, impregnat
39、ed, or welded unless authorized by purchaser. 3.7.5.1 When authorized by purchaser, welding in accordance with AMS2694 or other welding program acceptable to purchaser may be used. 4. QUALITY ASSURANCE PROVISIONS 4.1 Responsibility for Inspection The vendor of castings shall supply all samples for v
40、endors 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 ensure that the castings conform to specified requirements. 4.2 Classification of Tests 4.2.1 Acceptance Tests Compositi
41、on (3.1), tensile properties (3.6.1), hardness of production castings (3.6.2.1), response to heat treatment after hardening (3.6.2.2.1) and the applicable requirements of quality (3.7) are acceptance tests and shall be performed as specified in 4.3. 4.2.2 Periodic Tests Response to heat treatment af
42、ter hardening and tempering (3.6.2.2.2), corrosion resistance (3.7.1.1), and radiographic soundness (3.7.2) are periodic tests and shall be performed at a frequency selected by vendor, unless frequency of testing is specified by purchaser. 4.2.3 Preproduction Tests All technical requirements are pre
43、production tests and shall be performed on sample castings (4.3.2), when a change in control factors occurs (4.4.2.2), or when purchaser deems confirmatory testing to be required. 4.3 Sampling and Testing The minimum testing performed by vendor shall be in accordance with the following: 4.3.1 One ch
44、emical analysis specimen or a casting from each master heat shall be tested for conformance with Table 1; if 3.4.2.1 applies, 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
45、technical requirements. 4.3.2.1 Dimensional inspection sample quantity shall be as specified by purchaser. SAE AMS5349E Page 7 of 11 4.3.3 Tensile tests shall be conducted to determine conformance with Table 2. Sampling and test frequency are dependent upon the type and origin of specimen specified
46、by purchaser (See 3.4.4 and 3.6) or selected by vendor (See 4.3.3.4). When 3.4.2.1 applies, test frequency shall be acceptable to purchaser. 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
47、.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 8.2.10) shall be randomly selected and tested for conformance to properties specified by purchaser (See 3.6 and 8.6). 4.3.3.3 For specimens machined-from-casting, one casting sh
48、all be randomly selected from each lot and tested after full heat treatment of 3.5.1.2 at each location shown on the engineering drawing for conformance to the properties specified by purchaser (See 3.6 and 8.6). 4.3.3.3.1 When size and location of specimens are not shown, two test specimens shall b
49、e 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 by purchaser and vendor. 4.3.3.4 When acceptable to purchaser, specimens machined-from-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 speci
