SAE AMS 6455L-2016 Steel Sheet Strip and Plate 0 95Cr - 0 22V (0 48 - 0 53C) (SAE 6150) (UNS G61500).pdf

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 2016 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/AMS6455L AEROSPACE MATERIAL SPECIFICATION AMS6455 REV. L Issued 1939-12 Revised 2

5、016-09Superseding AMS6455K Steel, Sheet, Strip, and Plate 0.95Cr - 0.22V (0.48 - 0.53C) (SAE 6150) (Composition similar to UNS G61500)RATIONALE AMS6455L is a Five Year Review and update of this specification that includes revising condition (3.2), decarburization testing methods (3.3.2), grain size

6、testing frequency (4.2) and reporting (4.4). 1. SCOPE 1.1 Form This specification covers an aircraft-quality, low-alloy steel in the form of sheet, strip, and plate. 1.2 Application These products have been used typically for parts requiring high hardness or spring properties, but usage is not limit

7、ed to such applications. 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 document unless a specific document issue is specif

8、ied. 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 International, 400 Commonwealth Drive, Warrendale, PA 15096-0001, Tel: 877-606-7323 (inside USA and Cana

9、da) or +1 724-776-4970 (outside USA), www.sae.org. AMS2252 Tolerances Low-Alloy Steel Sheet, Strip, and Plate AMS2259 Chemical Check Analysis Limits Wrought Low-Alloy and Carbon Steels AMS2301 Steel Cleanliness, Aircraft Quality Magnetic Particle Inspection Procedure AMS2370 Quality Assurance Sampli

10、ng and Testing, Carbon and Low-Alloy Steel Wrought Products and Forging Stock SAE INTERNATIONAL AMS6455L Page 2 of 6 AMS2807 Identification Carbon and Low-Alloy Steels, Corrosion and Heat-Resistant Steels and Alloys Sheet, Strip, Plate, and Aircraft Tubing ARP1917 Clarification of Terms Used in Aero

11、space Metals Specifications 2.2 ASTM Publications Available from ASTM International, 100 Barr Harbor Drive, P.O. Box C700, West Conshohocken, PA 19428-2959, Tel: 610-832-9585, www.astm.org. ASTM A370 Mechanical Testing of Steel Products ASTM E112 Determining Average Grain Size ASTM E140 Hardness Con

12、version Tables for Metals ASTM E290 Bend Testing of Material for Ductility ASTM E350 Chemical Analysis of Carbon Steel, Low-Alloy Steel, Silicon Electrical Steel, Ingot Iron, and Wrought Iron ASTM E384 Knoop and Vickers Hardness of Materials 3. TECHNICAL REQUIREMENTS 3.1 Composition Shall conform to

13、 the percentages by weight shown in Table 1, determined by wet chemical methods in accordance with ASTM E350, by spectrochemical methods, or by other analytical methods acceptable to purchaser: Table 1 - Composition Element min max Carbon Manganese Silicon Phosphorus Sulfur Chromium Vanadium Nickel

14、Copper 0.48 0.70 0.15 - - 0.80 0.15 - - 0.53 0.90 0.35 0.025 0.025 1.10 0.30 0.25 0.35 3.1.1 Check Analysis Composition variations shall meet the applicable requirements of AMS2259. 3.2 Condition The product shall be supplied in the following condition; hardness shall be determined in accordance wit

15、h ASTM A370: 3.2.1 Sheet and Strip Cold finished, bright or atmosphere annealed, sub-critically annealed or normalized, and descaled if necessary, or hot rolled, annealed if necessary, and descaled. 3.2.2 Plate Hot rolled, annealed, sub-critically annealed or normalized if necessary, and descaled. S

16、AE INTERNATIONAL AMS6455L Page 3 of 6 3.2.2.1 If allowed by purchaser, cold rolled, annealed, sub-critically annealed or normalized if necessary, and descaled, as necessary. 3.3 Properties The product shall conform to the following requirements; hardness testing shall be performed in accordance with

17、 ASTM A370: 3.3.1 Average Grain Size Shall be ASTM No. 5 or finer, determined in accordance with ASTM E112. 3.3.2 Decarburization of Each Lot Decarburization shall be evaluated by one of the methods of 3.3.2.1 or 3.3.2.2. 3.3.2.1 Metallographic Method A cross section taken perpendicular to the surfa

18、ce shall be prepared, etched, and visually examined metallographically at a magnification not to exceed 100X. Optical indications of decarburiztion shall not show a layer of complete (ferrite) or partial decarburization exceeding the limits of Table 2. 3.3.2.2 Hardness Traverse Method The total dept

19、h of decarburization shall be determined by a traverse method using microindentation hardness testing in accordance with ASTM E384, at a magnification not exceeding 100X, conducted on a hardened, but untempered specimen protected during heat treatment to prevent changes in surface carbon content. De

20、pth of decarburization is defined as the perpendicular distance from the surface to the depth under that surface where there is not further increase in hardness. Such measurements shall be far enough away from any adjacent surface to be uninfluenced by any decarburization on the adjacent surface. Ac

21、ceptance shall be as listed in Table 2. Table 2A - Maximum decarburization, inch/pound units Nominal Thickness Inches Total Depth of Decarburization Inch Up to 0.500, incl Over 0.500 to 1.000, incl Over 1.000 0.015 0.025 0.035 Table 2B - Maximum decarburization, SI units Nominal Thickness Millimeter

22、s Total Depth of Decarburization Millimeter Up to 12.70, incl Over 12.70 to 25.40, incl Over 25.40 0.38 0.64 0.89 SAE INTERNATIONAL AMS6455L Page 4 of 6 3.3.2.3 When determining the depth of decarburization, it is permissible to disregard local areas provided the decarburization of such areas does n

23、ot exceed the above limits by more than 0.005 inch (0.13 mm) and the width is 0.065 inch (1.65 mm) or less. 3.3.2.4 In the case of dispute, the total depth of decarburization determined using the microindentation hardness traverse method shall govern. 3.3.3 Bending of Each Lot Product 0.749 inch (19

24、.02 mm) and under in nominal thickness shall be tested in accordance with ASTM E290 using a sample prepared nominally 0.75 inch (19.0 mm) in width with its axis of bending parallel to the direction of rolling and shall withstand without cracking when bending at room temperature through the angle and

25、 bend radius shown in Table 3. In case of dispute, the results of tests using the guided bend test of ASTM E290 shall govern. Table 3 - Bend requirements Nominal Thickness Inch Nominal Thickness Millimeters Bend Angle Degrees Bend Radius t = nominal thickness Up to 0.249, incl Up to 6.32, incl 180 1

26、/2t Over 0.249 to 0.749, incl Over 6.32 to 19.02, incl 90 1/2t 3.3.4 Hardenability of Each Heat Shall be J 6/16 inch (9.5 mm) = 53 HRC minimum and J 8/16 inch (12.7 mm) = 47 HRC minimum, determined on the standard end-quench test specimen in accordance with ASTM A255 except that the steel shall be n

27、ormalized at 1700 F 10 F (927 C 6 C) and the test specimen austenitized at 1550 F 10 F (843 C 6 C). 3.4 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 usage of the product. 3.4.1 S

28、teel shall be aircraft-quality conforming to AMS2301. 3.5 Tolerances Shall be in accordance with AMS2252. 4. QUALITY ASSURANCE PROVISIONS 4.1 Responsibility for Inspection The producer of the product shall supply all samples for producers tests and shall be responsible for the performance of all req

29、uired 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 Acceptance Tests Composition (3.1), decarburization (3.3.2), bending (3.3.3), hardenability (3

30、.3.4), 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 Tests Average grain size (3.3.1) is a periodic test and shall be performed at a frequency selected by the producer unless frequency

31、 of testing is specified by purchaser. SAE INTERNATIONAL AMS6455L Page 5 of 6 4.3 Sampling and Testing Shall be in accordance with AMS2370. 4.4 Reports The producer of the product shall furnish with each shipment a report showing the producer identity, country where the metal was melted (e.g., final

32、 melt in the case of metal processed by multiple melting operations), results of tests for composition and frequency-severity cleanliness rating of each heat and for bending of each lot, and stating that the product conforms to the other technical requirements. This report shall include the purchase

33、 order number, heat and lot numbers, AMS6455L, product form, size, and quantity. 4.5 Resampling and Retesting Shall be in accordance with AMS2370. 5. PREPARATION FOR DELIVERY 5.1 Identification Shall be in accordance with AMS2807. 5.2 Protective Treatment Product shall be protected from corrosion pr

34、ior to shipment. 5.3 Packaging 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 product to ensure carrier acceptance and safe delivery. 6. ACKNOWL

35、EDGMENT A producer shall include 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 by purchaser, will be subject to rejection. 8. NOTES 8.1 Revision In

36、dicator A change bar (l) 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 docum

37、ent, including technical revisions. Change bars and (R) are not used in original publications, nor in documents that contain editorial changes only. 8.2 Hardness conversion tables for metals are presented in ASTM E140. 8.3 Terms used in AMS are clarified in ARP1917. 8.4 Dimensions and properties in

38、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. SAE INTERNATIONAL AMS6455L Page 6 of 6 8.5 Purchase documents should

39、specify not less than the following: AMS6455L Product form and size of product desired Quantity of product desired. 8.6 When vanadium, a grain refiner, is present above 0.02% the grain size resulting from using the appropriate test procedures per ASTM E112 will satisfy an ASTM 5 or finer requirement

40、. Other technical societies have adopted the verification of fine grain steel based on chemistry alone. Included are ASTM International (Documents A6, A20, and A29); American Society of Mechanical Engineers (Documents SA6, SA20, and SA29); American Bureau of Shipping; CSA Group (Canada); EuroNorm documents and American Association of State Highway and Transportation PREPARED BY AMS COMMITTEE “E“