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 reaffirmed, revised, or cancelled. SAE invites your written comments and suggestions.Copyright 2012 SAE InternationalAll rights reserved. No part of this publication may b
3、e 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 (outside USA)Fax
4、: 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/AMS6547AEROSPACEMATERIALSPECIFICATIONAMS6547Issued 2013-01Steel Bars, Forgings, and Tubing1.0Cr - 3.2Ni -
5、 0.2Mo (0.12 - 0.17C)Aircraft-Quality(Composition similar to UNS K43214)RATIONALEAMS6547 is a new specification to cover aircraft-quality UNS K43214.1. SCOPE1.1 FormThis specification covers an aircraft-quality, low-alloy steel in the form of bars, forgings, mechanical tubing, and forging stock.1.2
6、ApplicationThese products have been used typically for carburized parts requiring high minimum core hardness with a narrow range, reduced distortion and subject to magnetic particle inspection standards, but usage is not limited to such applications.2. APPLICABLE DOCUMENTSThe issue of the following
7、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 superseding docu
8、ment has been specified, the last published issue of that document shall apply.SAE AMS6547 Page 2 of 72.1 SAE PublicationsAvailable from SAE International, 400 Commonwealth Drive, Warrendale, PA 15096-0001, Tel: 877-606-7323 (inside USA and Canada) or 724-776-4970 (outside USA), www.sae.org.AMS2251
9、Tolerances, Low-Alloy Steel BarsAMS2253 Tolerances, Carbon and Alloy Steel TubingAMS2259 Chemical Check Analysis Limits, Wrought Low-Alloy and Carbon SteelsAMS2301 Steel Cleanliness, Aircraft-Quality, Magnetic Particle Inspection ProcedureAMS2370 Quality Assurance Sampling and Testing, Carbon and Lo
10、w-Alloy Steel, Wrought Products and Forging StockAMS2372 Quality Assurance Sampling and Testing, Carbon and Low-Alloy Steel, Forgings AMS2806 Identification, Bars, Wire, Mechanical Tubing, and Extrusions, Carbon and Alloy Steels and Corrosion and Heat-Resistant Steels and AlloysAMS2808 Identificatio
11、n, 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 Conshohocken, PA 19428-2959, Tel: 610-832-9585, www.astm.org.ASTM A 25
12、5 Determining Hardenability of SteelASTM A 370 Mechanical Testing of Steel ProductsASTM E 381 Macroetch Testing Steel Bars, Billets, Blooms and ForgingsASTM E 112 Determining Average Grain SizeASTM E 350 Chemical Analysis of Carbon Steel, Low-Alloy Steel, Silicon Electrical Steel, Ingot Iron, and Wr
13、ought Iron3. TECHNICAL REQUIREMENTS3.1 CompositionShall conform to the following percentages by weight shown in Table 1, determined by wet chemical methods in accordance with ASTM E 350, by spectrochemical methods, or by other analytical methods acceptable to purchaser.SAE AMS6547 Page 3 of 7TABLE 1
14、 - COMPOSITIONElement min maxCarbon 0.12 0.17Manganese 0.30 0.60Silicon 0.15 0.40Phosphorus - 0.025Sulfur - 0.015Chromium 0.80 1.10Nickel 3.00 3.50Molybdenum 0.22 0.32Copper - 0.353.1.1 Check AnalysisComposition variations shall meet the applicable requirements of AMS2259.3.2 ConditionThe product sh
15、all be supplied in the following condition; hardness and tensile strength shall be determined in accordance with ASTM A 370:3.2.1 BarsBar shall not be cut from plate. (Also see 4.4.2).3.2.1.1 Bars 0.500 inch (12.70 mm) and Under in Nominal Diameter or Least Distance Between Parallel Sides Cold finis
16、hed having tensile strength not higher than 138 ksi (950 MPa) or hardness not higher than 285 HB or equivalent(See 8.2).3.2.1.2 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
17、 than 241 HB or equivalent (See 8.2). Bars ordered cold finished may have hardness as high as 285 HB or equivalent (See 8.2).3.2.2 ForgingsAs ordered.3.2.3 Mechanical TubingCold finished, unless otherwise ordered, having hardness not higher than 285 HB, or equivalent (See 8.2). Tubing ordered hot fi
18、nished and annealed or tempered shall have hardness not higher than 285 HB or equivalent (See 8.2).3.2.4 Forging Stock As ordered by the forging manufacturer.3.3 PropertiesThe product shall conform to the following requirements; hardness shall be performed in accordance with ASTM A 370:SAE AMS6547 P
19、age 4 of 73.3.1 MacrostructureVisual examination of transverse full cross-sections from bars, billets tube rounds (solid, not hollow), 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 imperfec
20、tions shall be no worse than the macrographs of ASTM E 381 shown in Table 2.TABLE 2 - MACROSTRUCTURE LIMITSCross-Sectional Area Square InchesCross-Sectional Area Square Centimeters MacrographsUp to 36, incl Up to 232, incl S2 - R1 - C2Over 36 to 133, incl Over 232 to 858. incl S2 - R2 C3Over 133 Ove
21、r 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 the cognizant engineering organization.3.3.1.1 Macrostructure examination is not required for hollow tubes that are produced directly from ingots o
22、r blooms unless specified by purchaser, in which case the purchaser shall specify standards to be used3.3.2 Average Grain Size of Bars, Forgings, and TubingShall 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) = 48 HRC max
23、imum and J 23/64 inch (9.1 mm) = 33 HRC minimum, determined on the standard end-quench test specimen in accordance with ASTM A 255 except that the steel shall be normalized at 1562 F 10 (850 C 6) and the test specimen austenitized at 1517 F 10 (825 C 6).3.4 QualityThe product, as received by purchas
24、er, 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 and mechanical tubing ordered hot finished or cold finished or ground, turned, or po
25、lished 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.3.4.3 Grain flow of die forgings, except in areas that contain flash-line end grain, shall follow the g
26、eneral contour of the forgings showing no evidence of reentrant grain flow.3.5 Tolerances3.5.1 BarsIn accordance with AMS2251.3.5.2 Mechanical Tubing In accordance with AMS2253.SAE AMS6547 Page 5 of 74. QUALITY ASSURANCE PROVISIONS4.1 Responsibility for inspectionThe vendor of the product shall supp
27、ly 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 Tests4.2.1 Acceptan
28、ce TestsComposition (3.1), condition (3.2), macrostructure (3.3.1), average grain size (3.3.2), hardenability of each heat (3.3.3), 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 o
29、f 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 purchaser.4.3 Sampling and Testing4.3.1 Bars, Mechanical Tubing, and Forging StockIn accordance with AMS2370.4.3.2 ForgingsIn accordance with AMS2372.4.4
30、 Reports4.4.1 The vendor of the bars, forgings, and tubing shall furnish with each shipment a report showing the results of tests for composition, macrostructure, hardenability and severity cleanliness rating of each heat, and for condition and average grain size of each lot, and stating that the pr
31、oduct conforms to the other technical requirements. This report shall include the purchase order number, heat and lot numbers, AMS6547, product form and size (and/or part number, if applicable) and quantity. If forgings are supplied, the size and melt source of stock used to make the forgings shall
32、also be included.4.4.2 If the ship size/shape is cut from a larger cross section, report the nominal metallurgically worked size (See 3.2.1).4.4.3 The vendor of forging stock shall furnish with each shipment a report showing the results of tests for composition, macrostructure, hardenability and fre
33、quency-severity cleanliness rating of each heat. This report shall include the purchase order number, heat number, AMS6547, size and quantity.4.5 Resampling and Retesting4.5.1 Bars, Mechanical Tubing, and Forging StockIn accordance with AMS2370.4.5.2 Forgings In accordance with AMS2372.SAE AMS6547 P
34、age 6 of 75. PREPARATION FOR DELIVERY5.1 SizesExcept when exact lengths or multiples of exact lengths are ordered, straight bars and tubing 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).
35、5.2 Identification5.2.1 Bars and Mechanical Tubing In accordance with AMS2806.5.2.2 Forgings In accordance with AMS2808.5.2.3 Forging Stock As agreed upon by purchaser and vendor.5.3 Protective TreatmentBars and mechanical tubing ordered cold drawn, cold rolled, ground, turned, or polished shall be
36、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 ensure carrier acceptance and
37、safe delivery.6. ACKNOWLEDGMENTA vendor shall include this specification number letter in all quotations and when acknowledging purchase orders.7. REJECTIONSProduct not conforming to this specification, or to modifications authorized by purchaser, will be subject to rejection.8. NOTES8.1 A change ba
38、r (|) 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 specification. An (R) symbol to the left of the document title indicates a complete revision of the specification, incl
39、uding technical revisions. Change bars and (R) are not used in original publications, nor in specifications that contain editorial changes only.8.2 Hardness conversion tables for metals are presented in ASTM E 140.8.3 Terms used in AMS are clarified in ARP1917.SAE AMS6547 Page 7 of 78.4 Dimensions a
40、nd 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 for the primary units and are presented only for information.8.5 Purchase documents should specify not less than the following:AMS6547Product form and size (and/or part number, if applicable) of product desiredQuantity of product desiredPREPARED BY AMS COMMITTEE “E”
