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    SAE AMS 2371K-2016 Quality Assurance Sampling and Testing Corrosion and Heat-Resistant Steels and Alloys Wrought Products and Forging Stock.pdf

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    SAE AMS 2371K-2016 Quality Assurance Sampling and Testing Corrosion and Heat-Resistant Steels and Alloys Wrought Products and Forging Stock.pdf

    1、_ 6$(7HFKQLFDO6WDQGDUGV%RDUG5XOHVSURYLGHWKDW7KLVUHSRUWLVSX EOLVKHGE6$(WRDGYDQFHWKHVWDWHRIWHFKQLFDODQGHQJL neering sciences. The use of this report is entirely voluntary, and its applicability and suitability for any particular use, including any patent infringement arising therefrom, LVWKHVROHUHVSRQ

    2、VLELOLWRIWKHXVHU 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 publication may be reproduced,

    3、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: 724-776-0

    4、790 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/AMS2371K AEROSPACE MATERIAL SPECIFICATION AMS2371 REV. K Issued 1969-11 Reaffirmed 2015-12 Revised 2016-10 Supe

    5、rseding AMS2371J Quality Assurance Sampling and Testing Corrosion and Heat-Resistant Steels and Alloys Wrought Products and Forging Stock RATIONALE AMS2371K revises Sampling and Testing for Tensile, Stress-Rupture and Creep (3.3.2.2), and Note 2 of Table 2, and is a Five Year Review and update of th

    6、is specification. 1. SCOPE This specification covers quality assurance sampling and testing procedures used to determine conformance to applicable material specification requirements of wrought corrosion and heat-resistant steel and alloy products and of forging stock. 1.1 Attributes included in det

    7、ail herein are: Composition, tensile properties, macrostructure, and micro-inclusion rating. Other requirements are included in Table 2. 1.2 Quality assurance sampling and testing procedures for forgings are covered in AMS2374. 2. APPLICABLE DOCUMENTS The issue of the following documents in effect o

    8、n 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 document has been specifi

    9、ed, 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) or +1 724-776-4970 (outside USA), www.sae.org. AMS2374 Quality Assurance Sampling and Testing

    10、, Corrosion and Heat-Resistant Steel and Alloy Forgings ARP1917 Clarification of Terms Used in Aerospace Metals Specifications SAE INTERNATIONAL AMS2371K Page 2 of 10 2.2 ASTM Publications Available from ASTM International, 100 Barr Harbor Drive, P.O. Box C700, West Conshohocken, PA 19428-2959, Tel:

    11、 610-832-9585, www.astm.org. ASTM E8/E8M Tension Testing of Metallic Materials ASTM E292 Conducting Time-for-Rupture Notch Tension Tests of Materials 3. TECHNICAL REQUIREMENTS 3.1 General 3.1.1 Omission from this specification of confirmatory tests of certain material properties or attributes contro

    12、lled by the applicable material specification does not relieve the vendor of responsibility for furnishing products that conform in all respects to the applicable material specification. 3.1.2 In event of conflict between requirements specified herein and requirements of a particular material specif

    13、ication, requirements of the material specification shall take precedence. 3.2 Responsibility for Tests The vendor of the product shall supply all samples for vendors tests and shall be responsible for the performance of all required tests. Results of such tests shall be reported to the purchaser as

    14、 required by the applicable material specification. 3.3 Detail Requirements 3.3.1 Lot A lot shall be as defined in 3.3.1.1 or 3.3.1.2, the applicable definition being as specified in Table 2 for the type of test and type of product being tested. 3.3.1.1 A lot shall be restricted to the product of a

    15、single heat. 3.3.1.1.1 A heat shall be all steel melted in a single furnace charge. For consumable electrode remelted steel, a heat shall be all consumable electrode remelted ingots processed from steel or alloy originally melted as a single furnace charge. 3.3.1.2 A lot shall be a mill form of one

    16、shape, condition, and nominal cross-sectional dimensions from a single heat, processed in accordance with 3.3.1.2.1 or 3.3.1.2.2. 3.3.1.2.1 Sequentially heat treated during a 24-hour period in a continuous furnace with no interruption in operations and no change in furnace temperature, charge rate,

    17、or racking pattern. 3.3.1.2.1.1 Time may be extended to 120 hours for austenitic, non-hardenable grades. 3.3.1.2.1.2 The nominal cross-sectional dimension restriction may be disregarded when multiple sizes are heat treated in a single batch or during an 8-hour period in a continuous furnace operatin

    18、g at a constant speed. In such cases, tensile and macrostructure testing shall be performed on the size having the greatest equivalent round cross-section. The equivalent round cross-section shall be determined by multiplying wall thickness of tubing and thickness or diameter of solids by the shape

    19、factors shown in Table 1. Table 1 - Shape factors Product Shape Factor Tubing Rounds Hexagons Squares Flats 2.0 1.0 1.1 1.25 1.50 SAE INTERNATIONAL AMS2371K Page 3 of 10 3.3.1.2.2 Sequentially heat treated during a 48-hour period in one or a series of batch-type furnace loads provided the loads are

    20、processed in the same furnace or same series of furnaces, and at the same power setting, set temperature, soak time, quench parameters, and racking pattern. 3.3.1.2.2.1 Time may be extended to 120 hours for austenitic, non-hardenable grades. 3.3.2 Sampling and Testing Shall be in accordance with Tab

    21、le 2 and as follows: 3.3.2.1 Composition 3.3.2.1.1 The reported composition of the steel or alloy subjected to a single melting operation shall be that of a sample taken immediately before or during the pouring of a heat. Analysis results of the sample shall be within the composition limits establis

    22、hed by the material specification, excluding any consideration of product check analysis. 3.3.2.1.1.1 If the sample of 3.3.2.1.1 is lost, a new sample shall be taken from the semi-finished or finished product. 3.3.2.1.2 For remelted steels and alloys, analyses shall be obtained from the remelted ing

    23、ot or product thereof in accordance with a sampling plan that will allow the reported composition of the steel to conform to one of the following options: The average of all ingots in the remelted heat. The average of the ingots directly involved with the order. The average of samples representing t

    24、he first and last usable metal poured from the heat. The analysis of each ingot involved with the order. 3.3.2.1.2.1 If an average for an element is reported, each analysis of the element shall fall within the composition limits established by the material specification; each individual analysis may

    25、 include the applicable product check analysis allowance, but no average shall include analyses that are both above and below the compositional limits. 3.3.2.1.2.2 When the remelting method is vacuum-arc remelting and the applicable material specification establishes minimum values for carbon and/or

    26、 manganese, these elements shall be determined and reported for each remelted ingot. 3.3.2.1.2.3 The heat analysis may be used for reporting the analyses of those elements governed only by a maximum in the material specification if the analysis is within the composition limits and the element routin

    27、ely decreases or remains constant during remelting. 3.3.2.1.2.4 Analyses of samples made prior to discard need not be reported. 3.3.2.2 Tensile, Stress-Rupture and Creep Specimen Orientation, Location, and Size Specimens conforming to either ASTM E8/E8M or ASTM E292, as applicable, shall be cut from

    28、 the semi-finished or finished product in the direction indicated in the following paragraphs, and shall be cut from the locations and to the sizes specified. The sample shall consist of one or more sections of the product selected to represent a specific location or locations with respect to the or

    29、der of pouring of the selected ingot or ingots and with respect to the location within the ingot. 3.3.2.2.1 Sheet, Strip, and Plate 3.3.2.2.1.1 Orientation Specimens shall be taken with the axis of the specimen perpendicular to the direction of rolling from widths 9 inches (229 mm) and over and para

    30、llel to the direction of rolling from widths under 9 inches (229 mm). When short-transverse tensile properties are specified in the applicable material specification, specimens shall be taken with axis of the specimen parallel to the thickness direction of the product. SAE INTERNATIONAL AMS2371K Pag

    31、e 4 of 10 3.3.2.2.1.2 Location and Size 3.3.2.2.1.2.1 Longitudinal and Long-Transverse Specimens The standard inch (12.7 mm) wide rectangular specimen or pin-loaded tensile specimen with 2 inch (50.8 mm) gage length shall be used for sheet, strip, and plate 0.625 inch (15.88 mm) and under in nominal

    32、 thickness. For plate 0.625 to 0.750 inch (15.88 to 19.05 mm), inclusive, in nominal thickness, either the standard inch (12.7 mm) wide rectangular specimen with 2 inch (50.8 mm) gage length or the standard inch (12.7 mm) round tensile specimen with 2 inch (50.8 mm) gage length or a smaller, round s

    33、pecimen proportional to the standard shall be used. For plate over 0.750 inch (19.05 mm) in nominal thickness, the standard inch (12.7 mm) round tensile specimen with 2 inch (50.8 mm) gage length or smaller, round specimen proportional to the standard shall be used. The tensile specimen shall be loc

    34、ated midway between the faces of product 1- inches (38.1 mm) and under in nominal thickness and midway from center to surface for product over 1- inches (38.1 mm) in nominal thickness. 3.3.2.2.1.2.2 Short-Transverse Specimens For plate 2- inches (63.5 mm) and over in nominal thickness, subsize round

    35、 tensile specimens, proportional to the standard, shall be used when thickness is insufficient to accommodate standard inch (12.7 mm) round tensile specimens with 2 inch (50.8 mm) gage length. Short-transverse testing is not applicable for plate under 2- inches (63.5 mm) in nominal thickness. 3.3.2.

    36、2.2 Bar, Rod, and Wire 3.3.2.2.2.1 Orientation Specimens shall be taken with the axis of the specimen in the longitudinal direction except that, when long-transverse tensile properties are specified in the applicable material specification, specimens shall be taken with the axis of the specimen perp

    37、endicular to the rolling or extruding direction. When short-transverse tensile properties are specified for rectangular bar in the applicable material specification, specimens shall be taken with the axis of the specimen parallel to the thickness direction of the bar. 3.3.2.2.2.2 Location and Size 3

    38、.3.2.2.2.2.1 Longitudinal and Long-Transverse Specimens If the product size or shape makes it impractical to use full-section specimens, the standard inch (12.7 mm) round tensile specimen with 2 inch (50.8 mm) gage length or a smaller round specimen, proportional to the standard, shall be used, exce

    39、pt that for rectangular bar 0.625 inch (15.88 mm) and under in nominal thickness, the standard inch (12.7 mm) wide rectangular specimen or pin-loaded tensile specimen with 2 inch (50.8 mm) gage length may be used. The tensile specimen shall be located at the center for product 1- inches (38.1 mm) an

    40、d under in nominal diameter, thickness, or distance between flats and midway from center to surface for product over 1- inches (38.1 mm) in nominal thickness. 3.3.2.2.2.2.2 Short-Transverse Specimens For bar 2- inches (63.5 mm) and over in nominal thickness, subsize round tensile specimens, proporti

    41、onal to the standard, shall be used when thickness is insufficient to accommodate standard inch (12.7 mm) round tensile specimens with 2 inch (50.8 mm) gage length. Short-transverse testing is not applicable for bar under 2- inches (63.5 mm) in nominal thickness. 3.3.2.2.3 Tubing 3.3.2.2.3.1 Orienta

    42、tion Specimens shall be taken with the axis of the specimen in the longitudinal direction except that, when long-transverse tensile properties of square or rectangular tubing are required by the applicable material specification, specimens shall be taken with the axis of the specimen perpendicular t

    43、o the drawing or extruding direction. SAE INTERNATIONAL AMS2371K Page 5 of 10 3.3.2.2.3.2 Longitudinal Specimens Specimens from round and square tubing shall be the full section of the tubular product unless limitations of the testing machine preclude the use of such specimens. Snug-fitting metal pl

    44、ugs shall be inserted into the ends of tubular specimens to a sufficient depth to permit the jaws of the testing machine to grip the specimen properly without crushing. The plugs shall not extend into that portion of the specimen to be tested. Care shall be exercised to ensure that the load is appli

    45、ed axially. The length of full-section specimens shall be determined by the gage length specified for measuring elongation. For large-size tubing, or when it is not possible to test in full section, longitudinal specimens shall be obtained from strips cut from the tube. Either inch (12.7 mm) wide re

    46、ctangular or subsize round tensile specimens, proportional to the standard, (for thick-wall tube) shall be machined from these strips. Longitudinal strip-type tensile specimens from welded tubing shall not include weld bead. For thick-wall tubing for which subsize round tensile specimens are used, w

    47、hen the nominal wall thickness is under 1- inches (38.1 mm), specimens shall be taken midway between the inner and outer surface of the tubing; when the nominal wall thickness is 1- inches (38.1 mm) and over, specimens shall be taken at one-quarter wall thickness, referencing from either OD or ID. 3

    48、.3.2.2.3.3 Long-Transverse Specimens Rectangular specimens or subsize round specimens proportional to the standard shall be used for square or rectangular tubing. Rectangular or round tensile specimens of the largest possible dimensions, proportional to the standard, shall be used when standard size specimens cannot be obtained. For thick wall tubing, a round tensile specimen shall be taken midway between the inner and outer surface of the tubing when the nominal wall thickness is under 1- inches (38.1 mm)


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