1、AEROSPACE MATERIAL SPECIFICATIONAMS6292 REV. JIssued 1939-12Reaffirmed 2006-02Revised 2014-08Superseding AMS6292HSteel Bars and Forgings, Carburizing1.8Ni - 0.25Mo (0.15 - 0.20C) (SAE 4617)(Composition similar to UNS G46170)RATIONALEAMS6292J results from a Five Year Review and update of this specifi
2、cation that revises macrostructure and reporting requirements.1. SCOPE1.1 FormThis specification covers an aircraft-quality, low-alloy steel in the form of bars, forgings, and forging stock.1.2 ApplicationThese products have been used typically for carburized parts that require intermediate minimum
3、core hardness and allow wide hardness range in sections 0.25 inch (6 mm) and under in nominal thickness, but usage is not limited to such applications. The core may or may not be machinable after hardening.2. APPLICABLE DOCUMENTSThe issue of the following documents in effect on the date of the purch
4、ase 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 superseding document has been specified, the last published
5、issue of that document shall apply.2.1 SAE PublicationsAvailable from SAE International, 400 Commonwealth Drive, Warrendale, PA 15096-0001, Tel: 877-606-7323 (inside USAand Canada) or 724-776-4970 (outside USA), www.sae.org.AMS2251 Tolerances, Low-Alloy Steel BarsAMS2259 Chemical Check Analysis Limi
6、ts, Wrought Low-Alloy and Carbon SteelsAMS2301 Steel Cleanliness, Aircraft Quality, Magnetic Particle Inspection ProcedureAMS2370 Quality Assurance Sampling and Testing, Carbon and Low-Alloy Steel Wrought Products and ForgingStock_SAE Technical Standards Board Rules provide that: “This report is pub
7、lished 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 therefrom, is the sole responsibility of the user.”SAE reviews each technica
8、l 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 2014 SAE InternationalAll rights reserved. No part of this publication may be reproduced, stored in a retrieval system or transmitted,
9、 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 USA)Fax: 724-776-0790Email: CustomerServicesae.orgSAE WEB ADDRESS
10、: http:/www.sae.orgSAE values your input. To provide feedbackon this Technical Report, please visithttp:/www.sae.org/technical/standards/AMS6292JSAE INTERNATIONAL AMS6292J Page 2 of 6AMS2372 Quality Assurance Sampling and Testing, Carbon and Low-Alloy Steel ForgingsAMS2806 Identification, Bars, Wire
11、, Mechanical Tubing, and Extrusions, Carbon and Alloy Steels and Corrosion and Heat Resistant Steels and AlloysAMS2808 Identification, ForgingsAS1182 Standard Stock Removal Allowance, Aircraft-Quality and Premium Aircraft-Quality Steel Bars and Mechanical Tubing2.2 ASTM PublicationsAvailable from AS
12、TM International, 100 Barr Harbor Drive, P.O. Box C700, West Conshohocken, PA 19428-2959,Tel: 610-832-9585, www.astm.org.ASTM A 255 Determining Hardenability of SteelASTM A 370 Mechanical Testing of Steel ProductsASTM E 112 Determining Average Grain SizeASTM E 350 Chemical Analysis of Carbon Steel,
13、Low-Alloy Steel, Silicon Electrical Steel, Ingot Iron, and Wrought IronASTM E 381 Macroetch Testing Steel Bars, Billets, Blooms, and Forgings3. TECHNICAL REQUIREMENTS3.1 CompositionShall conform to the percentages by weight shown in Table 1, determined by wet chemical methods in accordance with ASTM
14、 E 350 or by spectrographic or other analytical methods acceptable to purchaser.TABLE 1 - COMPOSITIONElement min maxCarbon 0.15 0.20Manganese 0.45 0.65Silicon 0.15 0.35Phosphorus - 0.025Sulfur - 0.025Nickel 1.65 2.00Molybdenum 0.20 0.30Chromium - 0.20Copper - 0.353.1.1 Check AnalysisComposition vari
15、ations shall meet the applicable requirements of AMS2259.3.2 ConditionThe product shall be supplied in the following condition unless another condition is authorized by purchaser; hardness and tensile strength shall be determined in accordance with ASTM A 370:SAE INTERNATIONAL AMS6292J Page 3 of 63.
16、2.1 Bars3.2.1.1 Bars 0.500 Inch (12.70 mm) and Under in Nominal Diameter or Least Distance Between Parallel SidesCold finished having tensile strength not higher than 125 ksi (860 MPa) or equivalent hardness (See 8.2).3.2.1.2 Bars Over 0.500 Inch (12.70 mm) in Nominal Diameter or Least Distance Betw
17、een Parallel SidesHot finished, unless otherwise ordered, having hardness not higher than 229 HB, or equivalent (See 8.3). Bars ordered cold finished may have hardness as high as 241 HB, or equivalent (See 8.3).3.2.1.3 Bar shall not be cut from plate (Also see 4.4.2).3.2.2 ForgingsAs ordered.3.2.3 F
18、orging StockAs ordered by the forging manufacturer.3.3 PropertiesThe product shall conform to the following requirements; hardness testing shall be performed in accordance with ASTM A 370:3.3.1 MacrostructureVisual examination of transverse full cross-sections from bars, billets, and forging stock,
19、etched in hot hydrochloric acid in accordance with ASTM E 381, shall show no pipe or cracks. Porosity, segregation, inclusions, and other imperfections shall be no worse than the macrographs of ASTM E 381 shown in Table 2.TABLE 2 - MACROSTRUCTURE LIMITSCross-Sectional AreaSquare InchesCross-Sectiona
20、l AreaSquare Centimeters MacrographsUp to 36, incl Up to 230, incl S2 - R1 - C2Over 36 to 133, incl Over 230 to 858, incl S2 - R2 - C3Over 133 Over 858 Note 1Note 1 Limits for larger sizes shall be agreed upon by purchaser and vendor. The purchaser shall have written approval of the agreement from t
21、he cognizant engineering organization.3.3.2 Average Grain Size of Bars and ForgingsShall be ASTM No. 5 or finer determined in accordance with ASTM E 112.3.3.3 Hardenability of Each HeatShall be J 1/16 inch (1.6 mm) = 46 HRC maximum and J 2/16 inch (3.1 mm) = 30 HRC minimum, determined on the standar
22、d end-quench test specimen in accordance with ASTM A 255, except that the steel shall be normalized at 1700 F 10 (925 C 6) and the test specimen austenitized at 1700 F 10 (925 C 6).3.4 QualityThe product, as received by purchaser, shall be uniform in quality and condition, sound, and free from forei
23、gn materials and from imperfections detrimental to usage of the product.SAE INTERNATIONAL AMS6292J Page 4 of 63.4.1 Steel shall be aircraft quality conforming to AMS2301.3.4.2 Bars ordered hot rolled or cold drawn, or ground, turned, or polished, shall, after removal of the standard stock removal al
24、lowance in accordance with AS1182, be free from seams, laps, tears, and cracks open to the machined, ground, turned, or polished surfaces.3.4.3 Grain flow of die forgings, except in areas that contain flash-line end grain, shall follow the general contour of the forgings, showing no evidence of reen
25、trant flow.3.5 TolerancesBars shall conform to AMS2251.4. QUALITY ASSURANCE PROVISIONS4.1 Responsibility for InspectionThe vendor of the product 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 t
26、o perform any confirmatory testing deemed necessary to ensure that the product conforms to specified requirements.4.2 Classification of Tests4.2.1 Acceptance TestsComposition (3.1), condition (3.2), macrostructure (3.3.1), average grain size (3.3.2), hardenability (3.3.3), frequency-severity cleanli
27、ness rating (3.4.1), and tolerances (3.5) are acceptance tests and shall be performed on each heat or lot as applicable.4.2.2 Periodic TestsGrain flow of die forgings (3.4.3) is a periodic test and shall be performed at a frequency selected by the vendor unless frequency of testing is specified by p
28、urchaser. 4.3 Sampling and Testing4.3.1 Bars and Forging StockIn accordance with AMS2370.4.3.2 ForgingsIn accordance with AMS2372.SAE INTERNATIONAL AMS6292J Page 5 of 64.4 Reports4.4.1 The producer of bars and forgings shall furnish with each shipment a report showing producer identity and country w
29、here the metal was melted (e. g., final melt in the case of metal processed by multiple melting operations), the results of tests for composition, macrostructure, hardenability, and frequency-severity cleanliness rating of each heat, and of condition and average grain size of each lot, and stating t
30、hat the product conforms to the other technical requirements. This report shall include the purchase order number, heat and lot numbers, AMS6292J, product form and size or part number, and quantity. If forgings are supplied, the size and melt source of stock used to make the forgings shall also be i
31、ncluded.4.4.2 Report the nominal metallurgically worked cross sectional size and the cut size, if different (Also see 3.2.1.3)4.4.3 The producer of forging stock shall furnish with each shipment a report showing producer identity and country where the metal was melted (e. g., final melt in the case
32、of metal processed by multiple melting operations) and the results of tests for composition, macrostructure, hardenability, and frequency-severity cleanliness rating of each heat. This report shall include the purchase order number, heat number, AMS6292J, size and quantity.4.5 Resampling and Retesti
33、ng4.5.1 Bars and Forging StockIn accordance with AMS2370.4.5.2 ForgingsIn accordance with AMS2372.5. PREPARATION FOR DELIVERY5.1 SizesExcept when exact lengths or multiples of exact lengths are ordered, straight bars will be acceptable in mill lengths of 6 to20 feet (2 to 6 m), but not more than 10%
34、 of any shipment shall be supplied in lengths shorter than 10 feet (3 m).5.2 Identification5.2.1 BarsIn accordance with AMS2806.5.2.2 ForgingsIn accordance with AMS2808.5.2.3 Forging StockAs agreed upon by purchaser and vendor.5.3 Protective TreatmentBars ordered cold drawn, cold rolled, ground, tur
35、ned, or polished shall be protected from corrosion prior to shipment.5.4 PackagingThe 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 product to ensu
36、re carrier acceptance and safe delivery.SAE INTERNATIONAL AMS6292J Page 6 of 66. ACKNOWLEDGMENTA vendor shall include this specification number and its revision letter in all quotations and when acknowledging purchase orders.7. REJECTIONMaterial not conforming to this specification, or to modificati
37、ons authorized by purchaser, will be subject to rejection.8. NOTES8.1 A change bar (|) located in the left margin is for the convenience of the user in locating areas where technical revisions, not editorial changes, have been made to the previous issue of this document. An (R) symbol to the left of
38、 the document title indicates a complete revision of the document, including technical revisions. Change bars and (R) are not used in original publications, nor in documents that contain editorial changes only.8.2 Tensile strength to hardness conversions are presented in ASTM A 370.8.3 Hardness conv
39、ersion tables for metals are presented in ASTM E 140.8.4 Terms used in AMS are clarified in ARP1917.8.5 Dimensions and properties 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 following:AMS6292JProduct form and size or part number of product desiredQuantity of product desired.PREPARED BY AMS COMMITTEE “E”
