SAE AMS 6396F-2015 Steel Sheet Strip and Plate 0 80Cr - 1 8Ni - 0 25Mo (0 49 - 0 55C) Annealed (UNS K22950).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 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 2015 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/AMS6396F AEROSPACEMATERIAL SPECIFICATIONAMS6396 REV. FIssued 1973-05Revised 2015-12Supersedin

5、g AMS6396ESteel Sheet, Strip, and Plate0.80Cr - 1.8Ni - 0.25Mo (0.49 - 0.55C)Annealed(Composition similar to UNS K22950)RATIONALEAMS6396F results from a Five Year Review and update of this specification that revises grain size testing, decarburization testing methods and reporting.1. SCOPE1.1 Form T

6、his 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 heavy-section, heat treated parts requiring good tensile and endurance strengths in combination with good ductility, but usage is not limit

7、ed to such applications.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 document issue is specifie

8、d. 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 Canada)

9、 or +1 724-776-4970 (outside USA), www.sae.org.AMS2252 Tolerances, Low-Alloy Steel Sheet, Strip, and PlateAMS2259 Chemical Check Analysis Limits, Wrought Low-Alloy and Carbon SteelsAMS2301 Steel Cleanliness, Aircraft Quality Magnetic Particle Inspection ProcedureSAE INTERNATIONAL AMS6396F Page 2 of

10、6AMS2370 Quality Assurance Sampling and Testing, Carbon and Low-Alloy Steel Wrought Products and Forging StockAMS2807 Identification, Carbon and Low-Alloy Steels, Corrosion and Heat-Resistant Steels and Alloys, Sheet, Strip, Plate, and Aircraft Tubing2.2 ASTM Publications Available from ASTM Interna

11、tional, 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 ProductsASTM E112 Determining Average Grain SizeASTM E290 Bend Testing of Material for DuctilityASTM E350 Chemical Analysis of Carbon Steel, Low Alloy

12、 Steel, Silicon Electrical Steel, Ingot Iron, and Wrought IronASTM E384 Knoop and Vickers Hardness of Materials3. 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 E350 or by spectrochemical

13、or other analytical methods approved by purchaser.Table 1 - CompositionElement min maxCarbon 0.49 0.55Manganese 0.65 0.85Silicon 0.15 0.35Phosphorus - 0.025Sulfur - 0.025Chromium 0.70 0.90Nickel 1.65 2.00Molybdenum 0.20 0.30Copper - 0.353.1.1 Aluminum, vanadium and columbium are optional grain refin

14、ing elements and need not be determined or reported unless used to satisfy the average grain size requirements of 3.3.1.2.3.1.2 Check AnalysisComposition variations shall meet the applicable requirements of AMS2259, except that check analysis limit for carbon shall apply only to over maximum.3.2 Con

15、dition The product shall be supplied in the following condition; hardness tests shall be conducted in accordance with ASTM A370:3.2.1 Sheet and StripCold finished, bright or atmosphere spheroidize annealed, and descaled, or hot rolled, annealed if necessary, and pickled; having a hardness not higher

16、 than 95 HRB, or equivalent (see 8.2).SAE INTERNATIONAL AMS6396F Page 3 of 63.2.2 PlateHot rolled, annealed if necessary, and descaled, having hardness not higher than 28 HRC, or equivalent (see 8.2).3.3 Properties The product shall conform to the following requirements; tensile and hardness testing

17、 shall be performed in accordance with ASTM A370:3.3.1 Average Grain SizeAverage grain size shall be determined by either 3.3.1.1 or 3.3.1.2.3.3.1.1 Shall be ASTM No. 5 or finer, determined in accordance with ASTM E112. 3.3.1.2 The product of a heat shall be considered to have an ASTM No. 5 or finer

18、 austenitic grain size if one or more of the following are determined by heat analysis (see 8.5):3.3.1.2.1 A total aluminum content of 0.020 to 0.050%.3.3.1.2.2 An acid soluble aluminum content of 0.015 to 0.050%.3.3.1.2.3 A vanadium content of 0.02 to 0.08%.3.3.1.2.4 A columbium content of 0.02 to

19、0.05%.3.3.2 DecarburizationDecarburization shall be evaluated by one of the two methods of 3.3.2.1 or 3.3.2.2.3.3.2.1 Metallographic MethodA cross section taken perpendicular to the surface shall be prepared, etched, and visually examined metallographically at a magnification not to exceed 100X. The

20、 product 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 depth of decarburization shall be determined by a traverse method using microhardness testing in accordance with ASTM E384, at a magnification n

21、ot exceeding 100X, conducted on a hardened but untempered specimen protected during heat treatment to prevent changes in surface carbon content. Tempering is generally not recommended, but if tempered, the tempering temperature shall be not higher than 300 F (149 C). Depth of decarburization is defi

22、ned 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. Acceptance shall be as listed in

23、 Table 2.3.3.2.3 When determining the depth of decarburization, it is permissible to disregard local areas provided the decarburization of such areas does not exceed the limits of Table 2 by more than 0.005 inch (0.13 mm) and the width is 0.065 inches (1.65 mm) or less.3.3.2.4 In case of dispute, th

24、e total depth of decarburization determined using the microhardness traverse method shall govern.SAE INTERNATIONAL AMS6396F Page 4 of 6Table 2A - Maximum total depth of decarburization, inch/pound unitsNominal ThicknessInchesTotal Depth of DecarburizationInch0.375 to 0.500, incl 0.015Over 0.500 to 1

25、.000, incl 0.025Over 1.000 to 2.000, incl 0.035Table 2B - Maximum total depth of decarburization, SI unitsNominal ThicknessMillimetersTotal Depth of DecarburizationMillimeter9.52 to 12.50, incl 0.38Over 12.50 to 25.00, incl 0.62Over 25.00 to 50.00, incl 0.883.3.3 BendingProduct 0.749 inch (19.02 mm)

26、 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 bend r

27、adius 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 requirementsNominal Thickness InchNominal Thickness MillimetersBend Angle DegreesBend Radiust = nominal thicknessUp to 0.249, incl Up to 6.32, incl 180 1/2tOver 0.249

28、to 0.749, incl Over 6.32 to 19.02, incl 90 1/2t3.3.4 Response to Heat TreatmentSpecimens from product oil quenched from 1500 F 25 F (815 C 15 C) and tempered for 2 hours 0.1 hour at not lower than 1100 F (595 C), shall have the following properties.3.3.4.1 Tensile PropertiesShall be as shown in Tabl

29、e 4.Table 4 - Minimum tensile propertiesProperty ValueTensile Strength 150.0 ksi (1,035 MPa)Yield Strength at 0.2% Offset 130.0 ksi ( 895 MPa)Elongation in 2 inches (50 mm) or 4D 8%3.3.4.2 HardnessShould be 301 to 363 HB, or equivalent (see 8.2), but the product shall not be rejected on the basis of

30、 hardness if the tensile properties of 3.3.4.1 are acceptable, determined on specimens taken from the same sample as that with nonconforming hardness, or from another sample with similar nonconforming hardness.SAE INTERNATIONAL AMS6396F Page 5 of 63.4 Quality The product, as received by purchaser, s

31、hall 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 AMS2301.3.5 Tolerances Shall conform to all applicable requirements of AMS2252.4. QUALITY ASSURANCE PROVISIO

32、NS 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 required tests. Purchaser reserves the right to sample and to perform any confirmatory testing deemed necessary to ensure that the product

33、 conforms to specified requirements.4.2 Classification of Tests 4.2.1 Acceptance TestsComposition (3.1), condition (3.2), average grain size (3.3.1), decarburization (3.3.2), bending (3.3.3), frequency and severity (3.4.1) and tolerances (3.5) are acceptance tests and shall be performed on each heat

34、 or lot as applicable. If grain refining elements (3.3.1.2) are not present, the ASTM E112 grain size test (3.3.1.1) shall be conducted on each lot.4.2.2 Periodic TestsIf grain refining elements (3.3.1.2) are present, the ASTM E112 grain size test (3.3.1.1) shall be conducted on a periodic basis and

35、 shall be performed at a frequency selected by the producer (not to exceed one year) unless frequency of testing is specified by purchaser. Response to heat treatment (3.3.4) is a periodic test and shall be performed at a frequency selected by the producer unless frequency of testing is specified by

36、 purchaser.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 producer identity, country where the metal was melted (e.g., final melt in the case of metal processed by multiple melting operations), th

37、e results of tests for composition and frequency-severity cleanliness rating of each heat, and for condition, bending, and, if measured, 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, hea

38、t and lot numbers, AMS6396F, product form, size, and quantity. If the grain size requirement of 3.3.1.2 is met by the aluminum, vanadium and/or columbium content, the aluminum, vanadium and/or columbium content shall be reported and a statement that the chemistry satisfies the grain size requirement

39、 shall be included.4.5 Resampling and RetestingShall be in accordance with AMS2370.5. PREPARATION FOR DELIVERY 5.1 Identification Shall be in accordance with AMS2807.SAE INTERNATIONAL AMS6396F Page 6 of 65.2 Protective TreatmentProduct shall be protected from corrosion prior to shipment.5.3 Packagin

40、g 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. ACKNOWLEDGMENT A producer shall inclu

41、de this specification number and its revision letter in all quotations and when acknowledging purchase orders.7. REJECTIONS Material not conforming to this specification, or to modifications authorized by purchaser, will be subject to rejection.8. NOTES 8.1 Revision IndicatorA change bar (l) located

42、 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, including technical revisio

43、ns. 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 inch/pound units and the Fahrenheit

44、 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.8.5 Grain sizeThe average grain size resulting from using the appropriate test procedures per ASTM E112 w

45、ill satisfy an ASTM No. 5 or finer grain size when the elements defined in 3.3.1.2 as grain refiners are present. Many other technical societies have adopted the verification of fine grain steel based on chemistry alone: ASTM International (A6, A20, A29); American Society of Mechanical Engineers (SA

46、6, SA20, SA29); American Bureau of Shipping; CSA International; EuroNorm; American Association of State Highway and Transportation Officials. 8.6 Purchase documents should specify not less than the following:AMS6396FProduct form and size of the product desiredQuantity of product desired.PREPARED BY AMS COMMITTEE “E“