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 2013 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/AMS5344F AEROSPACE MATERIAL SPECIFICATION AMS5344 REV. F Issued 1963-07 Revised 2
5、007-02 Reaffirmed 2013-10 Superseding AMS5344E (R) Steel, Corrosion-Resistant, Investment Castings 16Cr - 4.1Ni - 0.28Cb - 3.2Cu Homogenization, Solution, and Precipitation Heat Treated (H900) 180 ksi (1241 MPa) Tensile Strength (17-4) (Composition similar to UNS J92180 and J92200) RATIONALE AMS5344
6、F has been reaffirmed to comply with the SAE five-year review policy. 1. SCOPE 1.1 Form This specification covers a corrosion-resistant steel in the form of investment castings. 1.2 Application These castings have been used typically for parts requiring good corrosion resistance and strength up to 6
7、00 F (316 C), but usage is not limited to such applications (See 8.4). 1.2.1 Certain processing procedures and service conditions may cause these castings to become subject to stress-corrosion cracking; ARP1110 recommends practices to minimize such conditions. 2. APPLICABLE DOCUMENTS The issue of th
8、e 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 cancelled and no supe
9、rseding document has been specified, the last published issue of that document shall apply. Copyright SAE International Provided by IHS under license with SAENot for ResaleNo reproduction or networking permitted without license from IHS-,-,-SAE INTERNATIONAL AMS5344F Page 2 of 11 2.1 SAE Publication
10、s 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), or www.sae.org. AMS 2175 Castings, Classification and Inspection of AMS 2248 Chemical Check Analysis Limits, Corrosion and Heat-Resistant, S
11、teels and Alloys, Maraging, and Other Highly-Alloyed Steels, and Iron Alloys AMS 2360 Room Temperature Tensile Properties of Castings AMS 2694 Repair Welding of Aerospace Castings AMS 2700 Passivation of Corrosion-Resistant Steels AMS 2804 Identification, Castings AMS-H-6875 Heat Treatment of Steel,
12、 Process for ARP1110 Minimizing Stress Corrosion Cracking in Wrought Forms of Steel and Corrosion-Resistant Steels and Alloys 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, or www.astm.org. ASTM E 8
13、Tension Testing of Metallic Materials ASTM E 8M Tension Testing of Metallic Materials (Metric) ASTM E 18 Rockwell Hardness and Rockwell Superficial Hardness of Metallic Materials ASTM E 353 Chemical Analysis of Stainless, Heat-Resisting, Maraging, and Other Similar Chromium-Nickel-Iron Alloys ASTM E
14、 1417 Liquid Penetrant Examination ASTM E 1444 Magnetic Particle Examination ASTM E 1742 Radiographic Examination 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 E 353, by spectrochemica
15、l methods, or by other analytical methods acceptable to purchaser (See 8.2.1 and 8.2.2). TABLE 1 - COMPOSITION Element min max Carbon Manganese Silicon Phosphorus Sulfur Chromium Nickel Columbium (Niobium) Copper Aluminum Tin Nitrogen - - 0.50 - - 15.50 3.60 0.15 2.80 - - - 0.06 0.70 1.00 0.0250.025
16、16.70 4.60 0.40 3.50 0.05 0.02 0.05 3.1.1 Vendor 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 8.2.3). Copyright SAE International Provided by IHS under license with SAENot for ResaleNo reprod
17、uction or networking permitted without license from IHS-,-,-SAE INTERNATIONAL AMS5344F Page 3 of 11 3.1.2 Check Analysis Composition variations shall meet the applicable requirements of AMS 2248. 3.2 Melting Practice Castings and specimens shall be poured at casting vendors facility either from a me
18、lt (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) 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 c
19、reates 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 (See 8.2.6). 3.2.3 If melts are modified by replenishment (See 8.2.7), vendor shall have a written procedure acceptable
20、 to purchaser which defines the controls, tests, and traceability criteria for both castings and separately-cast specimens. Control factors of 4.4.2.2 shall apply. 3.3 Condition Castings shall be delivered in the homogenized, solution treated, and precipitation heat treated condition, except as spec
21、ified in 3.3.1 or 3.3.2. 3.3.1 When specified by purchaser, castings shall be solution and precipitation heat treated, omitting homogenization heat treatment. 3.3.2 When specified by purchaser, castings shall be solution heat treated twice and precipitation heat treated, omitting homogenization heat
22、 treatment. 3.4 Test Specimens Specimens shall be either 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 written procedure acceptable to purchaser. Control factors of 4.4.2.2 shall apply.
23、3.4.2 Each master heat shall be qualified by evaluation of chemical specimens. 3.4.2.1 If replenishments are made at remelt as in 3.2.3, the frequency of sampling and testing used by the vendor for qualification to 3.4.2 shall be acceptable to purchaser. 3.4.3 Chemical Analysis Specimens Shall be of
24、 any convenient size and shape. 3.4.4 Tensile Specimens Shall be of standard proportions in accordance with ASTM E 8 or ASTM E 8M (See 8.3) 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 ca
25、st oversize and subsequently machined to 0.250-inch (6.35-mm) diameter. Copyright SAE International Provided by IHS under license with SAENot for ResaleNo reproduction or networking permitted without license from IHS-,-,-SAE INTERNATIONAL AMS5344F Page 4 of 11 3.4.4.2 When integrally-cast specimens
26、and specimens machined-from-castings are specified, specimen size and/or location shall be agreed upon by purchaser and vendor. (See 8.2.9 and 8.6.) 3.5 Heat Treatment Castings and representative tensile specimens shall be heat treated in accordance with AMS-H-6875 except as specified in 3.5.1. 3.5.
27、1 Castings and Tensile Specimens 3.5.1.1 Homogenization Heat Treatment Heat to 2100 F 25 (1149 C 14), hold at heat for not less than 90 minutes, and cool as required to room temperature. 3.5.1.2 Solution Heat Treatment Heat to 1900 F 25 (1038 C 14), hold at heat for 1 hour per inch (25 mm) of sectio
28、n thickness but not less than 30 minutes, and cool as required to below 70 F (21 C). 3.5.1.3 Precipitation Heat Treatment Heat to a temperature within the range 900 to 925 F (482 to 496 C), hold at the selected temperature within 10 F (6 C) for not less than 90 minutes, and cool in air or inert gas
29、to room temperature. 3.6 Properties Conformance shall be based upon testing of separately-cast specimens unless purchaser specifies integrally-cast specimens or specimens machined-from-casting. 3.6.1 Room Temperature Tensile Properties Shall be as specified in 3.6.1.1 or 3.6.1.2, determined in accor
30、dance with ASTM E 8 or ASTM E 8M (See 8.3). Properties other than those listed may be defined as specified in AMS 2360. 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 Y
31、ield Strength at 0.2% Offset Elongation in 4D Reduction of Area 180 ksi (1241 MPa)160 ksi (1103 MPa)6% 15% 3.6.1.2 Integrally-Cast Specimens or Specimens Machined-from-Casting Shall be as shown in Table 3. TABLE 3 - MINIMUM ROOM TEMPERATURE TENSILE PROPERTIES OF INTEGRALLY-CAST AND SPECIMENS MACHINE
32、D-FROM-CASTING Property Value Tensile Strength Yield Strength at 0.2% Offset Elongation in 4D Reduction of Area 180 ksi (1241 MPa)160 ksi (1103 MPa)4% 12% Copyright SAE International Provided by IHS under license with SAENot for ResaleNo reproduction or networking permitted without license from IHS-
33、,-,-SAE INTERNATIONAL AMS5344F Page 5 of 11 3.6.2 Hardness Shall be as follows, determined in accordance with ASTM E 18: 3.6.2.1 Castings Except as specified in 4.3.5.2, castings heat treated to the condition of 3.3, shall be 40 to 46 HRC. 3.6.2.2 Representative Specimens Hardness not applicable. 3.
34、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, hot tears, and cold shuts, and free of scale and other process-in
35、duced surface contamination which would obscure defects. 3.7.1.1 Unless otherwise specified, cast surfaces shall be sufficiently cleaned such that, after passivation by purchaser, the castings shall meet the corrosion test requirement of AMS 2700. 3.7.2 Castings shall be produced under radiographic
36、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 frequency of inspection specified by purchaser or as neces
37、sary to ensure continued maintenance of internal quality. 3.7.2.1 Radiographic inspection shall be conducted in accordance with ASTM E 1742 or other method specified by purchaser. 3.7.3 When specified, additional nondestructive testing shall be performed as follows: 3.7.3.1 Fluorescent penetrant ins
38、pection in accordance with ASTM E 1417 or other method specified by purchaser. 3.7.3.2 Magnetic particle inspection in accordance with ASTM E 1444 or other method specified by purchaser. 3.7.4 Acceptance standards for radiographic, magnetic particle, fluorescent penetrant, visual, and other inspecti
39、on methods shall be as agreed upon by purchaser and vendor. AMS 2175 may be used to specify acceptance standards (casting grade) and frequency of inspection (casting class). 3.7.4.1 When acceptance standards are not specified, Grade C of AMS 2175 shall apply for each applicable method of inspection.
40、 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 AMS 2694 or other welding program acceptable to purchaser may be used. 4. QUALITY ASSURANCE PROVISIONS 4.1 Responsibility for Inspecti
41、on 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 sample and to perform any confirmatory testing deemed necessary to ensure that the castings conform to specified requirements. Copy
42、right SAE International Provided by IHS under license with SAENot for ResaleNo reproduction or networking permitted without license from IHS-,-,-SAE INTERNATIONAL AMS5344F Page 6 of 11 4.2 Classification of Tests 4.2.1 Acceptance Tests Composition (3.1), tensile properties (3.6.1), hardness of casti
43、ngs (3.6.2.1), 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 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 a
44、 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), and when purchaser deems confirmatory testing to be required. 4.3 Sampli
45、ng and Testing The minimum testing performed by vendor 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, test frequency shall be acceptable to purchaser. 4.3.2 One prepr
46、oduction 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 Tensile tests shall be conducted to determine conformance with 3.6.1. Samplin
47、g and test frequency are dependent upon the type and origin of specimen specified by purchaser (See 3.4.4 and 3.6) or selected by vendor (See 4.3.3.4). When 3.4.2.1 applies, specimen source and test frequency shall be acceptable to purchaser. 4.3.3.1 For separately-cast specimens in the fully heat t
48、reated condition (See 3.3 and 3.5.1), one specimen from each lot (See 8.2.10) shall be tested for conformance to 3.6.1.1. 4.3.3.2 For integrally-cast specimens in the fully heat treated condition (See 3.3 and 3.5.1), two specimens from each lot shall be randomly selected and tested for conformance to 3.6.1.2. 4.3.3.3 For specimens machined-from-casting, one casting shall be randomly selected from each lot and tested after full heat treatment (See 3.3 and 3.5.1) at each location shown on the engineering drawing for conformance to 3.6.1.2. 4.3.3.3.1 When size and loc
