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/AMS6356HAEROSPACEMATERIAL SPECIFICATIONAMS6356 REV. HIssued 1962-01Revised 2015-12Superseding
5、 AMS6356GSteel, Sheet, Strip, and Plate0.95Cr - 0.20Mo - (0.30 - 0.35C) (4132)(Composition similar to UNS G41300)RATIONALEAMS6356H is a Five Year Review and update of this specification that revises grain size testing, decarburization testing methods and reporting.1. SCOPE1.1 Form This specification
6、 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 heat-treated parts and structures that may require welding during fabrication, but usage is not limited to such applications. Product, 0.375 inch (9.52 mm)
7、and under in nominal thickness, can be through-hardened to a minimum tensile strength of 180 ksi (1241 MPa) and proportionately lower strength in heavier section thicknesses.2. APPLICABLE DOCUMENTSThe issue of the following documents in effect on the date of the purchase order forms a part of this s
8、pecification 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 issue of that document shall app
9、ly.2.1 SAE Publications Available from SAE International, 400 Commonwealth Drive, Warrendale, PA 15096-0001, Tel: 877-606-7323 (inside USA and Canada) or +1 724-776-4970 (outside USA), www.sae.org.AMS2252 Tolerances, Low-Alloy Steel Sheet, Strip, and PlateAMS2259 Chemical Check Analysis Limits, Wrou
10、ght Low-Alloy and Carbon SteelsAMS2301 Steel Cleanliness, Aircraft Quality Magnetic Particle Inspection ProcedureSAE INTERNATIONAL AMS6356H Page 2 of 6AMS2370 Quality Assurance Sampling and Testing, Carbon and Low-Alloy Steel Wrought Products and Forging StockAMS2807 Identification, Carbon and Low-A
11、lloy Steels, Corrosion and Heat-Resistant Steels and Alloys, Sheet, Strip, Plate, and Aircraft Tubing2.2 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 A255 Determining the Hardenabilit
12、y of SteelASTM 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 Steel, Silicon Electrical Steel, Ingot Iron, and Wrought IronASTM E384 Knoop and Vickers Hardness of
13、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, by spectrochemical methods, or by other analytical methods acceptable to purchaser.Table 1 - CompositionElement min maxCarb
14、on 0.30 0.35Manganese 0.40 0.60Silicon 0.15 0.50Phosphorus - 0.025Sulfur - 0.025Chromium 0.80 1.10Molybdenum 0.15 0.25Nickel - 0.25Copper - 0.353.1.1 Aluminum, vanadium and columbium are optional grain refining elements and need not be determined or reported unless used to satisfy the average grain
15、size requirements of 3.3.1.2.3.1.2 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 with ASTM A370:3.2.1 Sheet and Strip Cold finished, bright or
16、atmosphere annealed, and descaled if necessary; or hot rolled, annealed if necessary, and descaled; having hardness not higher than 95 HRB, or equivalent (see 8.2).SAE INTERNATIONAL AMS6356H Page 3 of 63.2.2 Plate Hot rolled, annealed if necessary, and descaled, having hardness not higher than 95 HR
17、B, or equivalent (see 8.2).3.2.2.1 If allowed by the purchaser, cold rolled, annealed if necessary, and descaled, having hardness not higher than 95 HRB, or equivalent (see 8.2).3.2.3 If product is ordered spheroidize annealed, the degree of spheroidization shall be as agreed upon by purchaser and p
18、roducer.3.3 Properties The product shall conform to the following requirements; hardness testing shall be performed in accordance with ASTM A370:3.3.1 Average Grain Size Average 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
19、 with ASTM E112.3.3.1.2 The product of a heat shall be considered to have an ASTM No. 5 or finer 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 t
20、o 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 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 prepa
21、red, etched, and visually examined metallographically at a magnification not to exceed 100X. The 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
22、a traverse method using microhardness 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. Tempering is generally not recommended, but if tempered, th
23、e tempering temperature shall be not higher than 300 F (149 C). Depth 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
24、be uninfluenced by any decarburization on the adjacent surface. Acceptance shall be as listed in 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 in Table 2 by more than 0.0
25、05 inch (0.13 mm) and the width is 0.065 inches (1.65 mm) or less.3.3.2.4 In case of dispute, the total depth of decarburization determined using the microhardness traverse method shall govern.SAE INTERNATIONAL AMS6356H Page 4 of 6Table 2A - Maximum total depth of decarburization limits, inch/pound
26、unitsNominal ThicknessInchesTotal Depth ofDecarburizationInch0.375 to 0.500, incl 0.015Over 0.500 to 1.000, incl 0.025Over 1.000 to 2.000, incl 0.035Table 2B - Maximum total depth of decarburization limits, SI unitsNominal ThicknessMillimetersTotal Depth ofDecarburizationMillimeter9.52 to 12.70, inc
27、l 0.38Over 12.70 to 25.40, incl 0.64Over 25.40 to 50.80, incl 0.893.3.3 Hardenability of Each HeatShall be J1/16 inch (1.6 mm) = 57 HRC maximum and J3/16 inch (4.8 mm) = 46 HRC minimum, determined on the standard end-quench test specimen in accordance with ASTM A255 except that the steel shall be no
28、rmalized at 1700 F 10 F(927 C 6 C) and the test specimen austenitized at 1600 F 10 F (871 C 6 C). 3.3.4 BendingProduct 0.749 inch (19.02 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 ben
29、ding parallel to the direction of rolling and shallwithstand without cracking when bending at room temperature through the angle and 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 requirementsNominal Thicknes
30、s InchNominal Thickness MillimetersBend Angle DegreesBend Radiust = nominal thicknessUp to 0.249, incl Up to 6.32, incl 180 1/2tOver 0.249 to 0.749, incl Over 6.32 to 19.02, incl 90 1/2t3.4 Quality The product, as received by purchaser, shall be uniform in quality and condition, sound, and free from
31、 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 PROVISIONS 4.1 Responsibility for Inspection The producer of the produ
32、ct 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 conforms to specified requirements.SAE INTERNATIONAL AMS6356H
33、 Page 5 of 64.2 Classification of Tests 4.2.1 Acceptance TestsComposition (3.1), hardness (3.2), average grain size (3.3.1), decarburization (3.3.2), hardenability (3.3.3), bending (3.3.4),frequency and severity (3.4.1) and tolerances (3.5) are classified as acceptance tests and shall be performed o
34、n each heat 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 periodi
35、c basis and shall be performed at a frequency selected by the producer (not to exceed one year) unless frequency of testing is specified by 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
36、 producer identity, country where the metal was melted (e.g., final melt in the case of metal processed by multiple melting operations), the results of tests for composition, hardenability, and frequency-severity cleanliness rating of each heat and for condition and, if measured, average grain size
37、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, AMS6356H, product form, size, and quantity. If the grain size requirement of 3.3.1.2 is met by the aluminum, vanadium and/or columbium co
38、ntent, the aluminum, vanadium and/or columbium content shall be reported and a statement that the chemistry satisfies the grain size requirement shall be included.4.5 Resampling and Retesting Shall be in accordance with AMS2370.5. PREPARATION FOR DELIVERY 5.1 Identification Shall be in accordance wi
39、th AMS2807.5.2 Protective Treatment The product shall be protected from corrosion prior 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 trans
40、portation of the product to ensure carrier acceptance and safe delivery. 6. ACKNOWLEDGMENT 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 modificatio
41、ns authorized by purchaser, will be subject to rejection.SAE INTERNATIONAL AMS6356H Page 6 of 68. NOTES 8.1 Revision IndicatorA 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 previ
42、ous issue of this document. An (R) symbol to the left of 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 Hardness conversion tables for
43、 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 temperatures are primary; dimensions and properties in SI units and the Celsius temperatures are shown as the approximate equivalents of the primary
44、units and are presented only for information.8.5 Grain sizeThe average grain size resulting from using the appropriate test procedures per ASTM E112 will satisfy an ASTM No. 5 or finer grain size when the elements defined in 3.3.1.2 as grain refiners are present. Other technical societies have adopt
45、ed 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; American Association of State Highway and Transportation Officials.8.6 Purchase documents should specify not less than the following:AMS6356HProduct form and size of product desiredQuantity of product desired.PREPARED BY AMS COMMITTEE “E“
