1、 AEROSPACE MATERIAL SPECIFICATION Steel, Corrosion-Resistant, Bars and Forgings 13.0Cr - 2.5Ni - 5.5Co - 2.0Mo - 0.60V (0.05 - 0.09C) Vacuum Induction Plus Vacuum Consumable Electrode Melted (Composition similar to UNS S42670) AMS 5930ASuperseding AMS 5930 1. SCOPE: 1.1 Form: This specification cove
2、rs a premium aircraft-quality, alloy steel in the form of bars, forgings, and forging stock. 1.2 Application: These products have been used typically for carburized parts requiring high minimum case hardness and corrosion resistance equivalent to AISI Type 440C, but usage is not limited to such appl
3、ications. These products are suitable for service up to 675 F (357 C). 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 docu
4、ment 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. 2.1 SAE Publications: Available from SAE, 400 Commonwealth Drive, Warrendale, PA, 15096-0001 or w
5、ww.sae.org. AMS 2241 Tolerances, Corrosion and Heat-Resistant Steel, Iron Alloy, Titanium, and Titanium Alloy Bars and Wire AMS 2248 Chemical Check Analysis Limits, Corrosion and Heat-Resistant Steels and Alloys, Maraging and Other Highly-Alloyed Steels, and Iron Alloys AMS 2300 Steel Cleanliness, P
6、remium Aircraft-Quality, Magnetic Particle Inspection Procedure Issued 1990-10 Revised 2005-08Reaffirmed 2010-10 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
7、, and its applicability and suitability for any particular use, including any patent infringement arising therefrom, 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 writte
8、n comments and suggestions. Copyright 2010 SAE International All rights reserved. No part of this 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 permissi
9、on of SAE. TO PLACE A DOCUMENT ORDER: Tel: 877-606-7323 (inside USA and Canada) Tel: +1 724-776-4970 (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/te
10、chnical/standards/AMS5930A Copyright SAE International Provided by IHS under license with SAENot for ResaleNo reproduction or networking permitted without license from IHS-,-,-SAE- 2 - AMS 5930A AMS 5930A2.1 (Continued): AMS 2371 Quality Assurance Sampling and Testing, Corrosion and Heat-Resistant S
11、teels and Alloys, Wrought Products and Forging Stock AMS 2374 Quality Assurance Sampling and Testing, Corrosion and Heat-Resistant Steel and Alloy Forgings AMS 2806 Identification, Bars, Wire, Mechanical Tubing, and Extrusions, Carbon and Alloy Steels and Corrosion and Heat-Resistant Steels and Allo
12、ys AMS 2808 Identification, Forgings AS1182 Standard Machining Allowance, Aircraft-Quality and Premium Aircraft-Quality Steel Bars and Mechanical Tubing 2.2 ASTM Publications: Available from ASTM, 100 Barr Harbor Drive, P.O. Box C700, West Conshohocken, PA 19428-2959 or www.astm.org. ASTM A 370 Mech
13、anical Testing of Steel Products ASTM A 604 Macroetch Testing of Consumable Electrode Remelted Steel Bars and BilletsASTM E 45 Determining the Inclusion Content of Steel ASTM E 112 Determining Average Grain Size ASTM E 353 Chemical Analysis of Stainless, Heat-Resisting, Maraging, and Other Similar C
14、hromium-Nickel-Iron Alloys 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. TABLE 1 - Composit
15、ion Element min max CarbonManganeseSiliconPhosphorusSulfurChromiumNickelCobaltMolybdenumVanadium0.050.500.10-12.002.004.001.500.400.091.000.700.0150.01014.003.007.002.500.80Copyright SAE International Provided by IHS under license with SAENot for ResaleNo reproduction or networking permitted without
16、 license from IHS-,-,-SAE- 3 - AMS 5930A AMS 5930A3.1.1 Check Analysis: Composition variations shall meet the applicable requirements of AMS 2248. 3.2 Melting Practice: Steel shall be multiple melted using vacuum induction melting practice followed by vacuum consumable electrode remelting. 3.3 Condi
17、tion: The product shall be supplied in the following condition; hardness and tensile strength shall be determined in accordance with ASTM A 370: 3.3.1 Bars: 3.3.1.1 Bars 0.500-Inch (12.70-mm) and Under in Nominal Diameter or Least Distance Between Parallel Sides: Annealed and cold-finished having te
18、nsile strength not higher than 150 ksi(1034 MPa) or equivalent hardness (See 8.2). 3.3.1.2 Bars Over 0.500-Inch (12.70-mm) in Nominal Diameter or Least Distance Between Parallel Sides: Hot finished and annealed, unless otherwise ordered, having hardness not higher than 302 HB, or equivalent (See 8.3
19、). Bars ordered annealed and cold finished may have hardness as high as 311 HB, or equivalent (See 8.3). 3.3.2 Forgings: Annealed. 3.3.3 Forging Stock: As ordered by the forging manufacturer. 3.4 Properties: The product shall conform to the following requirements:3.4.1 Macrostructure: Visual examina
20、tion of transverse full cross-sections from bars, billets, and forging stock, etched in hot hydrochloric acid in accordance with ASTM A 604, shall show no pipe or cracks. Porosity, segregation, inclusions, and other imperfections for product 36 square inches (232 cm2) and under in nominal cross-sect
21、ional area shall be no worse than the macrographs of ASTM A 604 shown in Table 2. TABLE 2 - Macrostructure Limits Class Condition Severity 1234FrecklesWhite Spots Radial Segregation Ring Pattern AABBCopyright SAE International Provided by IHS under license with SAENot for ResaleNo reproduction or ne
22、tworking permitted without license from IHS-,-,-SAE- 4 - AMS 5930A AMS 5930A3.4.2 Micro-Inclusion Rating: No specimen shall exceed the limits of Table 3, determined in accordance with ASTM E 45, Method D. TABLE 3 - Micro-Inclusion Rating Limits A ThinAHeavyBThinBHeavyCThinCHeavyDThinDHeavyWorst Fiel
23、d Severity Worst Field Frequency maximum Total Rateable Fields, Frequency, maximum2.0ab1.0111.5ab1.0111.5ab1.0111.55c1.011a Combined A+B+C, not more than three fields of No. 2.0 A Type or No. 1.5 B and C Types b Combined A+B+C, not more than eight fields c Any number of lower rateable fields is perm
24、itted 3.4.2.1 A rateable field is defined as one which has a Type A, B, C, or D inclusion rating of at least No. 1.0 thin or heavy in accordance with the Jernkontoret Chart, Plate I-r, ASTM E 45(See 8.7). 3.4.3 Average Grain Size: Shall be ASTM No. 5 or finer, determined in accordance with ASTM E 11
25、2. 3.4.4 Response to Heat Treatment: Product 4.0 inches (102 mm) and under in nominal cross-section and specimens 4.0 inches (102 mm) and under in nominal cross-section extracted from larger product shall have hardness not lower than 38 HRC or equivalent (See 8.3), determined in accordance with ASTM
26、 A 370, at any location after being heated to 1900 F 25 (1038 C 14), held at heat for 15 to 30 minutes, and quenched in oil. 3.5 Quality: The product, as received by purchaser, shall be uniform in quality and condition, sound, and free from foreign materials and from imperfections detrimental to usa
27、ge of the product. 3.5.1 Steel shall be premium aircraft-quality conforming to AMS 2300. 3.5.2 Bars ordered hot rolled or cold drawn, or ground, turned, or polished, shall, after removal of the standard machining allowance in accordance with AS1182, be free of decarburization and from seams, laps, t
28、ears, and cracks open to the ground, turned, or polished surface. 3.5.3 Grain flow of die forgings, except in areas which contain flash-line end grain, shall follow the general contour of the forgings showing no evidence of reentrant grain flow. Copyright SAE International Provided by IHS under lice
29、nse with SAENot for ResaleNo reproduction or networking permitted without license from IHS-,-,-SAE- 5 - AMS 5930A AMS 5930A3.6 Tolerances: Bars shall conform to all applicable requirements of AMS 2241. 4. QUALITY ASSURANCE PROVISIONS: 4.1 Responsibility for Inspection: The vendor of the product shal
30、l 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 product conforms to specified requirements.4.2 Classification of Tests: 4.2.1
31、Acceptance Tests: Composition (3.1), condition (3.3), macrostructure (3.4.1), micro-including rating (3.4.2), average grain size (3.4.3), response to heat treatment (3.4.4), and tolerancees (3.6) are acceptance tests and shall be performed on each heat or lot as applicable. 4.2.2 Periodic Tests: Fre
32、quency-severity cleanliness rating of each heat and grain flow of die forgings (3.5.3) are periodic tests and shall be performed at a frequency selected by the vendor unless frequency of testing is specified by purchaser. 4.3 Sampling and Testing: Shall be as follows: 4.3.1 Bars and Forging Stock: I
33、n accordance with AMS 2371. 4.3.2 Forgings: In accordance with AMS 2374. 4.4 Reports: 4.4.1 The vendor of the product shall furnish with each shipment a report showing the results of tests for composition, macrostructure, micro-inclusion rating, grain size, and when performed, the frequency-severity
34、 cleanliness rating of each heat and for response to heat treatment of each lot and stating that the product conforms to the other technical requirements. This report shall include the purchase order number, heat and lot numbers, AMS 5930A, size, and quantity. If forgings are supplied, the size and
35、melt source of stock used to make the forgings shall also be included. 4.4.2 The vendor of forging stock shall furnish with each shipment a report showing the results of tests for composition and frequency-severity cleanliness rating of each heat. This report shall include the purchase order number,
36、 heat number, AMS 5930A, size, and quantity. Copyright SAE International Provided by IHS under license with SAENot for ResaleNo reproduction or networking permitted without license from IHS-,-,-SAE- 6 - AMS 5930A AMS 5930A4.5 Resampling and Retesting: Shall be as follows: 4.5.1 Bars and Forging Stoc
37、k: In accordance with AMS 2371. 4.5.2 Forgings: In accordance with AMS 2374. 5. PREPARATION FOR DELIVERY: 5.1 Sizes: Except when exact lengths or multiples of exact lengths are ordered, straight bars will be acceptable in mill lengths of 6 to 20 feet (1.8 to 6.1 m) but not more than 10% of any shipm
38、ent shall be supplied in lengths shorter than 10 feet (3 m). 5.2 Identification: Shall be as follows: 5.2.1 Bars: In accordance with AMS 2806. 5.2.2 Forgings: In accordance with AMS 2808. 5.2.3 Forging Stock: As agreed upon by purchaser and vendor. 5.3 Packaging: 5.3.1 Product ordered cold drawn, co
39、ld rolled, ground, turned, or polished shall be protected from corrosion prior to shipment. 5.3.2 The product shall be prepared for shipment in accordance with commercial practice and in compliance with applicable rules and regulations pertaining to the handling, packaging, and transportation of the
40、 product to ensure carrier acceptance and safe delivery. 6. ACKNOWLEDGMENT: A vendor shall mention this specification number and its revision letter in all quotations and when acknowledging purchase orders. 7. REJECTIONS: Product not conforming to this specification, or to modifications authorized b
41、y purchaser, will be subject to rejection. Copyright SAE International Provided by IHS under license with SAENot for ResaleNo reproduction or networking permitted without license from IHS-,-,-SAE- 7 - AMS 5930A AMS 5930A8. NOTES: 8.1 A change bar (|) located in the left margin is for the convenience
42、 of the user in locating areas where technical revisions, not editorial changes, have been made to the previous issue of a specification. An (R) symbol to the left of the document title indicates a complete revision of the specification, including technical revision. Change bars and (R) are not used
43、 in original publications, nor in specifications that contain editorial changes only. 8.2 Tensile strength to hardness conversions are presented in ASTM A 370. 8.3 Hardness conversion tables for metals are presented in ASTM E 140. 8.4 Terms used in AMS are clarified in ARP1917. 8.5 Dimensions and pr
44、operties in inch/pound units and the Fahrenheit temperatures are primary; dimensions and properties in SI units and the Celsius temperatures are shown as the approximate equivalents of the primary units and are presented only for information. 8.6 Purchase documents should specify not less than the f
45、ollowing: AMS 5930A Form and size or part number of product desired Quantity of product desired If forging stock; applicable test requirements desired, other than composition. 8.7 The ASTM E 45 and the associated reference micrographs were revised in 1997. Comparison plate identity number changed fr
46、om III to I-r (plate II is unchanged); the contents of the referenced plates have not changed. 8.8 Key Words: Steel, corrosion-resistant, bars, forgings, vacuum melted, UNS S42670 PREPARED UNDER THE JURISDICTION OF AMS COMMITTEE “F” Copyright SAE International Provided by IHS under license with SAEN
47、ot for ResaleNo reproduction or networking permitted without license from IHS-,-,-SAE- 8 - AMS 5930A AMS 5930ARATIONALE:To adopt prior general agreements, and to bring editorial text current. Copyright SAE International Provided by IHS under license with SAENot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
