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 2011 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/AMS5337D AEROSPACE MATERIAL SPECIFICATION AMS 5337 REV. D Issued 1971-05 Revised
5、2007-01 Reaffirmed 2011-11 Superseding AMS 5337C Steel, Maraging, Investment Castings 18.5Ni - 9.0Co - 5.0Mo - 0.70Ti - 0.12Al Vacuum Melted Homogenized, Overaged, and Solution Heat Treated (Composition similar to UNS J93150) RATIONALE This document has been reaffirmed to comply with the SAE five-ye
6、ar review policy. 1. SCOPE 1.1 Form This specification covers an alloy steel in the form of investment castings. 1.2 Application These castings have been used typically for heat treated parts requiring ultra-high strengths up to 600 F (316 C), but usage is not limited to such applications. 2. APPLIC
7、ABLE 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 unless a specific document issue is specified. When the referenced document
8、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 15096-0001, Tel: 877-606-7323 (inside USA and Canada) or 724-776-4970 (outside USA),
9、 www.sae.org AMS 2175 Classification and Inspection of Castings AMS 2248 Chemical Analysis Check Limits, Corrosion and Heat-Resistant Steels and Alloys, Maraging, and Other Highly-Alloyed Steels and Iron Alloys AMS 2360 Room Temperature Tensile Properties of Castings AMS 2694 Repair Welding of Aeros
10、pace Castings AMS 2750 Pyrometry AMS 2804 Identification, Castings Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-SAE AMS 5337D Page 2 of 10 2.2 ASTM Publications Available from ASTM International, 100 Barr Harbor Drive, P.O. Box C700, West Conshoho
11、cken, PA 19428-2959, Tel: 610-832-9585, www.astm.org ASTM A 370 Mechanical Testing of Steel Products ASTM E 353 Chemical Analysis of Stainless, Heat Resisting, Maraging, and Other Similar Chromium-Nickel-Iron Alloys ASTM E 1417 Liquid Penetrant Examination ASTM E 1444 Magnetic Particle Examination A
12、STM E 1742 Radiographic Inspection 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 spectrochemical methods, or by other analytical methods acceptable to purchaser (See 8.3.1 an
13、d 8.3.2). TABLE 1 - COMPOSITION Element min maxCarbon Manganese Silicon Phosphorus Sulfur Nickel Cobalt Molybdenum Titanium Aluminum - - - - - 18.00 8.50 4.50 0.55 0.05 0.03 0.10 0.10 0.0100.01019.00 9.50 5.50 0.85 0.20 3.1.1 Vendor may test for any element not otherwise listed in Table 1 and includ
14、e this analysis in the report of 4.5. Limits of acceptability may be specified by purchaser (See 8.3.3). 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
15、 a melt (See 8.3.4) of a master heat, or directly from a master heat (See 3.4.2 and 8.3.5). 3.2.1 The metal for castings and specimens shall be melted and poured under vacuum without loss of vacuum between melting and pouring. When authorized by purchaser (See 8.3.6), protective atmosphere may be us
16、ed in lieu of vacuum for pouring of castings. 3.2.2 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 creates a new master heat. 3.2.3 Portions o
17、f 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 8.3.6). 3.2.4 If melts are modified by replenishment (See 8.3.7), vendor shall have a written procedure acceptable to purchaser that defines the controls, t
18、est, and traceability criteria for both castings and separately-cast specimens. Control factors of 4.4.2.2 shall apply. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-SAE AMS 5337D Page 3 of 10 3.3 Condition Castings shall be delivered in the homoge
19、nized, overaged, and solution heat treated condition (See 3.5). 3.4 Test Specimens Specimens shall be separately-cast, integrally-cast (See 8.3.8), 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 purcha
20、ser. Control factors of 4.4.2.2 shall apply. 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 3.2.4, the frequency of sampling and testing used by the vendor for qualification to 3.4.2 shall be ac
21、ceptable 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 convenient size and shape. 3.4.4 Tensile Specimens Shall be of
22、 standard proportions in accordance with ASTM A 370 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 subsequently machined to 0.250 inch (6.35 mm) diameter. 3.4.4.2 When inte
23、grally-cast specimens and/or specimens machined-from-casting are specified, specimen size and location shall be as agreed upon by purchaser and vendor (See 8.3.9 and 8.5). 3.4.5 Hardness Specimens for Response to Heat Treatment May be a representative specimen or a casting. 3.5 Heat Treatment To pro
24、duce the condition in castings for delivery, heat treat as specified in 3.5.1 to conform to hardness of 3.6.2.1. Pyrometry shall be in accordance with AMS 2750. 3.5.1 Production Castings and Specimens 3.5.1.1 Homogenization Heat to 2100 F 25 (1149 C 14), hold at heat for four hours 0.25, and cool to
25、 room temperature at a rate equivalent to air cool or faster. 3.5.1.2 Overaging Heat to 1100 F 25 (593 C 14), hold at heat for one to four hours, and cool to room temperature at a rate equivalent to air cool or faster. Alternately, heat to the solution heat treating temperature directly after overag
26、ing without cooling between steps. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-SAE AMS 5337D Page 4 of 10 3.5.1.3 Solution Heat to 1500 F 25 (816 C 14), hold at heat for one hour per inch (25 mm) of section thickness but in no case less than one
27、hour, and cool to room temperature at a rate equivalent to air cool or faster. 3.5.2 Response to Heat Treatment Castings or specimens for testing after maraging shall be heat treated as in 3.5.1 and the following: 3.5.2.1 Marage Heat to 900 F 15 (482 C 8), hold at heat for 3 hours 0.25, and cool to
28、room temperature at a rate equivalent to air cool or faster. 3.5.3 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 specime
29、ns or specimens machined-from-casting. Properties of integrally-cast specimens or specimens machined-from-casting shall be as specified by purchaser (See 8.5). 3.6.1 Room Temperature Tensile Properties of Separately-Cast Specimens Shall be as shown in Table 2, determined in accordance with ASTM A 37
30、0, after heat treatment in accordance with 3.5.1 and 3.5.2. Properties other than those listed may be defined as specified in AMS 2360. TABLE 2 - MINIMUM ROOM TEMPERATURE TENSILE PROPERTIES OF SEPARATELY-CAST SPECIMENS Property Value Tensile Strength Yield Strength at 0.2% Offset Elongation in 4D Re
31、duction in Area 270 ksi (1862 MPa)250 ksi (1724 MPa)3% 10% 3.6.2 Hardness Shall be as follows, determined in accordance with ASTM A 370: 3.6.2.1 Production castings in the homogenized, overaged, and solution heat treated condition of 3.5.1 shall have hardness not higher than 35 HRC, or equivalent (S
32、ee 8.2). 3.6.2.2 Hardness as a Response to Heat Treatment Castings and specimens in the homogenized, overaged, solution heat treated, and maraged condition of 3.5.1 and 3.5.2 shall have hardness not lower than 50 HRC, or equivalent (See 8.2). 3.7 Quality 3.7.1 Castings, as received by purchaser, sha
33、ll 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-induced surface contamination that would obscure defects.
34、 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 frequ
35、ency of inspection specified by purchaser, or as necessary to ensure continued maintenance of internal quality. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-SAE AMS 5337D Page 5 of 10 3.7.2.1 Radiographic inspection shall be conducted in accordanc
36、e with ASTM E 1742 or other process method specified by purchaser. 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 process method specified by purchaser. 3.7.3.2 Magnetic particle
37、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 inspection methods shall be as agreed upon by purchaser and vendor (See 8.3.9). AMS 2175 may be used to specify a
38、cceptance 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. 3.7.5 Castings shall not be peened, plugged, impregnated, or welded unless authorized by purchaser. 3.7.5.1 When authorized by purcha
39、ser, welding in accordance with AMS 2694 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 vendors tests and shall be responsible for the performance of all required test
40、s. 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 Composition (3.1), tensile properties (3.6.1), hardness (3.6.2.1 and 3.6.2.2), and the
41、applicable requirements of quality (3.7) are acceptance tests and shall be performed as specified in 4.3. 4.2.2 Periodic Tests Radiographic soundness (3.7.3) is a periodic test and shall be performed at a frequency selected by vendor, unless frequency of testing is specified by purchaser. 4.2.3 Prep
42、roduction Tests All technical requirements are preproduction tests and shall be performed on specimens or 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 Sampling and Testing The minimum testing performed b
43、y 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 preproduction casting in accordance with 4.4 shall
44、be tested to the requirements of the casting drawing and to all technical requirements. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-SAE AMS 5337D Page 6 of 10 4.3.2.1 Dimensional inspection sample quantity shall be as specified by purchaser. 4.3.
45、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 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 purchas
46、er. 4.3.3.1 For separately-cast specimens in the homogenized, overaged, solution heat treated, and maraged condition of 3.5.2, 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 homogenized, overaged, solution heat treated, and m
47、araged condition of 3.5.2, two specimens from each lot (see 8.3.10) shall be randomly selected and tested for conformance to properties specified by purchaser (See 3.6 and 8.5). 4.3.3.3 For specimens machined-from-casting, one casting shall be randomly selected from each lot and tested in the homoge
48、nized, overaged, solution heat treated, and maraged condition of 3.5.2 at locations shown on the engineering drawing for conformance to the properties specified by purchaser (See 3.6 and 8.5). 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 by purchaser and vendor. 4.3.3.4 When acceptable to purchaser, specimens machined-from-casting may be used in lieu of both separa
