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 theref
2、rom, 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 InternationalAll rights reserved. No part of this publi
3、cation 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: +1 724-776-4970 (out
4、side USA)Fax: 724-776-0790Email: CustomerServicesae.orgSAE WEB ADDRESS: http:/www.sae.orgSAE values your input. To provide feedbackon this Technical Report, please visithttp:/www.sae.org/technical/standards/AMS6290JAEROSPACE MATERIAL SPECIFICATIONAMS6290 REV. JIssued 1939-12Revised 2013-10Supersedin
5、g AMS6290HSteel, Bars and Forgings, Carburizing1.8Ni - 0.25Mo (0.11 - 0.17C) (SAE 4615)(Composition similar to UNS G46150)RATIONALEAMS6290J results from a Five Year Review and update of this specification. 1. SCOPE1.1 FormThis specification covers an aircraft-quality, low-alloy steel in the form of
6、bars, forgings, and forging stock.1.2 ApplicationThese products have been used typically for carburized parts which require low minimum core hardness and allow a wide hardness range in sections 0.375 inch (9.50 mm) and under in nominal thickness, but usage is not limited to such applications. The co
7、re may or may not be machinable after hardening.2. APPLICABLE DOCUMENTSThe 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 do
8、cument issueis 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 PublicationsAvailable from SAE International, 400 Commonwealth Drive, Warrendale, PA 15096-0001, Tel: 877-606-7323 (
9、inside USA and Canada) or 724-776-4970 (outside USA), www.sae.org.AMS2251 Tolerances, Low-Alloy Steel BarsAMS2259 Chemical Check Analysis Limits, Wrought Low-Alloy and Carbon SteelsAMS2301 Steel Cleanliness, Aircraft Quality Magnetic Particle Inspection ProcedureAMS2370 Quality Assurance Sampling an
10、d Testing, Carbon and Low-Alloy Steel, Wrought Products and Forging StockAMS2372 Quality Assurance Sampling and Testing, Carbon and Low-Alloy Steel ForgingsSAE INTERNATIONAL AMS6290J Page 2 of 6AMS2806 Identification, Bars, Wire, Mechanical Tubing, and Extrusions, Carbon and Alloy Steels and Corrosi
11、on 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 ASTM International, 100 Barr Harbor Drive, P.O. Box C700, West Conshohocke
12、n, 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, Low-Alloy Steel, Silicon Electrical Steel, Ingot Iron, and Wrought Iron
13、ASTM 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 E 350, by spectrochemical methods, or other analytical methods accepta
14、ble to purchaser.TABLE 1 - COMPOSITIONElement min maxCarbon 0.11 0.17Manganese 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 variations shall meet the applicable requirements of AMS2259.3.2 Co
15、nditionThe product shall be supplied in the following condition; hardness and tensile strength shall be determined in accordance with ASTM A 370:3.2.1 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 no
16、t higher than 125 ksi (862 MPa) or equivalent hardness (See 8.2).SAE INTERNATIONAL AMS6290J Page 3 of 63.2.1.2 Bars Over 0.500 Inch (12.70 mm) in Nominal Diameter or Least Distance Between Parallel SidesHot finished, unless otherwise ordered, having hardness not higher than 229 HB, or equivalent (Se
17、e 8.3). Bars ordered cold finished shall have hardness not higher than 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 Forging StockAs ordered by the forging manufacturer.3.3 PropertiesThe product shall conform to the following
18、requirements:3.3.1 MacrostructureVisual examination of transverse full cross-sections from bars, billets, and forging stock, 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
19、the macrographs of ASTM E 381 shown in Table 2.TABLE 2 - MACROSTRUCTURE LIMITSCross-Sectional AreaSquare InchesCross-Sectional 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
20、 larger sizes shall be agreed upon by purchaser and vendor. The purchaser shall have written approval of the agreement from the cognizant engineering organization.3.3.2 Average Grain SizeShall be ASTM No. 5 or finer, determined in accordance with ASTM E 112.3.3.3 HardenabilityShall be J 1/16 inch (1
21、.588 mm) = HRC 43 maximum and J 6/16 inch (9.525 mm) = HRC 18 minimum, determined on the standard end-quench test specimen in accordance with ASTM A 255, except that the steel shall be normalized at 1700 F 10 (927 C 6) and the test specimen austenitized at 1700 F 10 (927 C 6).3.4 QualityThe product,
22、 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 product.3.4.1 Steel shall be aircraft-quality conforming to AMS2301.3.4.2 Bars ordered hot rolled or cold drawn, or ground, turned, or polis
23、hed shall, after removal of the standard stock removal allowance in accordance with AS1182, be free from seams, laps, tears, and cracks open to the machined, ground, turned, or polished surface.SAE INTERNATIONAL AMS6290J Page 4 of 63.4.3 Grain flow of die forgings, except in areas which contain flas
24、h-line end grain, shall follow the general contour of the forgings, showing no evidence of reentrant flow.3.5 TolerancesShall be as follows:3.5.1 BarsIn accordance with AMS2251.4. QUALITY ASSURANCE PROVISIONS4.1 Responsibility for InspectionThe supplier of the product shall supply all samples for ve
25、ndors tests and shall be responsible for the performance of all required tests. Purchaser reserves the right to sample and 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
26、), condition (3.2), macrostructure (3.3.1), average grain size (3.3.2), hardenability (3.3.3), frequency-severity cleanliness 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
27、 periodic test and shall be performed at a frequency selected by the vendor unless frequency of testing is specified by purchaser.4.3 Sampling and TestingShall be as follows:4.3.1 Bars and Forging StockIn accordance with AMS2370.4.3.2 ForgingsIn accordance with AMS2372.4.4 Reports4.4.1 The producer
28、of bars or forgings shall furnish with each shipment a report showing the producer identity and country where the metal was melted (e. g., final melt in the case of metal processed by multiple melting operations) and results of tests for composition, macrostructure, frequency-severity cleanliness ra
29、ting, and hardenability of each heat, and for condition (hardness) and average grain size 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, AMS6290J, product form, size (and/or part numbe
30、r, if applicable), and quantity. If forgings are supplied, the size and melt source of stock used to make the forgings shall also be included.4.4.2 Report the nominal metallurgically worked cross sectional size and the cut size, if different (See 3.2.1.3).SAE INTERNATIONAL AMS6290J Page 5 of 64.4.3
31、The producer of forging stock shall furnish with each shipment a report showing the producer identity and country where the metal was melted (e. g., final melt in the case of metal processed by multiple melting operations) and the composition, macrostructure, frequency-severity rating, and hardenabi
32、lity of each heat. This report shall include the purchase order number, heat number, AMS6290J, size (and/or part number, if applicable) and quantity.4.5 Resampling and RetestingShall be as follows:4.5.1 Bars and Forging StockIn accordance with AMS2370.4.5.2 ForgingsIn accordance with AMS2372.5. PREP
33、ARATION FOR DELIVERY5.1 SizesExcept 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 shipment shall be supplied in lengths shorter than 10 feet (3 m).5.2 IdentificationShall be
34、as follows:5.2.1 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, turned, or polished shall be shall be protected from corrosion prior to shipment.5.
35、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 ensure carrier acceptance and safe delivery.6. ACKNOWLEDGMENTA vendor shall
36、 include this specification number and its revision letter in all quotations and when acknowledging purchase orders.SAE INTERNATIONAL AMS6290J Page 6 of 67. REJECTIONSProduct not conforming to this specification, or to modifications authorized by purchaser, will be subject to rejection.8. NOTES8.1 T
37、he 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 the document title indicates a complete revision of the document, in
38、cluding 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 conversion tables for metals are presented in ASTM E 140.8.4 Terms used i
39、n 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:AMS6290JProduct form and size (and/or part number, if applicable) of product desiredQuantity of product desired.PREPARED BY AMS COMMITTEE “E”
