SAE AMS 6373H-2016 Steel Welded Tubing 0 95Cr - 0 20Mo (0 28 - 0 33C) (SAE 4130) (UNS G41300).pdf
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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 2016 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/AMS6373HAEROSPACEMATERIAL SPECIFICATIONAMS6373 REV. HIssued 1969-11Reaffirmed 2010-10Revised
5、2016-01Superseding AMS6373GSteel, Welded Tubing0.95Cr - 0.20Mo (0.28 - 0.33C) (SAE 4130)(Composition similar to UNS G41300)RATIONALEAMS6373H is a Five Year Review and update of this specification that revises grain size requirements, decarburization testing and reporting.1. SCOPE1.1 Form This specif
6、ication covers an aircraft-quality, low-alloy steel in the form of welded tubing.1.2 Application This tubing has been used typically for general use where welding and moderate tensile properties are required and especially when a minimum tensile strength of 160 ksi (1103 MPa) is required after heat
7、treatment, but usage is not limited 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 sp
8、ecific 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 apply.2.1 SAE Publications Available from SAE International, 400 Commonwealth Drive, Warrendale, PA 15096-0001, Tel: 877
9、-606-7323 (inside USA and Canada) or +1 724-776-4970 (outside USA), www.sae.org.AMS2253 Tolerances, Carbon and Alloy Steel TubingAMS2259 Chemical Check Analysis Limits, Wrought Low-Alloy and Carbon SteelsAMS2301 Steel Cleanliness, Aircraft-Quality Magnetic Particle Inspection ProcedureSAE INTERNATIO
10、NAL AMS6373H Page 2 of 7AMS2370 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 Avail
11、able 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 ProductsASTM E112 Determining Average Grain SizeASTM E350 Chemical Analysis of Carbon Steel, Low-Alloy Steel, Silicon Electrical
12、 Steel, Ingot Iron, and Wrought IronASTM E384 Knoop and Vickers Hardness of MaterialsASTM E1444 Magnetic Particle Examination3. 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 spec
13、trochemical methods, or by other analytical methods acceptable to purchaser.Table 1 - CompositionElement min maxCarbon 0.28 0.33Manganese 0.40 0.60Silicon 0.15 0.35Phosphorus - 0.025Sulfur - 0.025Chromium 0.80 1.10Molybdenum 0.15 0.25Nickel - 0.25Copper - 0.353.1.1 Aluminum, vanadium and columbium a
14、re optional grain refining elements and need not be determined or reported unless used to satisfy the average grain size requirements of 3.4.3.2.3.1.2 Check AnalysisComposition variations shall meet the applicable requirements of AMS2259.3.2 Condition Cold finished and either normalized and tempered
15、, stress relieved, or otherwise heat treated.3.3 Fabrication Tubing shall be produced by a welded and drawn process. The external finishes may be produced by any method which will provide the required surface condition and not affect the limits of wall thickness, with the exception that centerless g
16、rinding is not acceptable. A light polish to improve surface appearance may be employed.SAE INTERNATIONAL AMS6373H Page 3 of 73.3.1 Tubing shall be processed to completely remove the weld reinforcement and any dimensional indication of the presence of welds.3.4 Properties Tubing shall conform to the
17、 following requirements; hardness and tensile testing shall be performed in accordance with ASTM A370:3.4.1 Tensile PropertiesShall be as shown in Table 2.Table 2A - Minimum tensile properties, inch/pound unitsNominal ODInchesNominal WallThicknessInchTensileStrengthksiYield Strengthat 0.2% Offsetksi
18、Elongation in2 Inches%Full TubeElongation in2 Inches%StripUp to 0.500, excl Up to 0.188, incl 95 75 10 -Up to 0.500, excl Over 0.188 90 70 12 -0.500 and over Up to 0.188, incl 95 75 12 70.500 and over Over 0.188 90 70 15 10Table 2B - Minimum tensile properties, SI unitsNominal ODMillimetersNominal W
19、allThicknessMillimetersTensileStrengthMPaYield Strengthat 0.2% OffsetMPaElongation in50.8 mm%Full TubeElongation in50.8 mm%StripUp to 12.70, excl Up to 4.78, incl 655 517 10 -Up to 12.70, excl Over 4.78 621 483 12 -12.70 and over Up to 4.78, incl 655 517 12 712.70 and over Over 4.78 621 483 15 103.4
20、.2 CrushingSpecimens as in 4.3.1.1 shall withstand, without failure of the weld, crushing axially under a gradually applied load until thecross-sectional dimension is increased in one zone by 20% or until one complete fold is formed, or until the specimen is reduced in length to two-thirds of the or
21、iginal length.3.4.3 Average Grain SizeAverage grain size shall be determined by either 3.4.3.1 or 3.4.3.2.3.4.3.1 Shall be ASTM No. 5 or finer, determined in accordance with ASTM E112. 3.4.3.2 The product of a heat shall be considered to have an ASTM No. 5 or finer austenitic grain size if one or mo
22、re of the following are determined by heat analysis (see 8.4):3.4.3.2.1 A total aluminum content of 0.020 to 0.050%.3.4.3.2.2 An acid soluble aluminum content of 0.015 to 0.050%.3.4.3.2.3 A vanadium content of 0.02 to 0.08%.3.4.3.2.4 A columbium content of 0.02 to 0.05%.SAE INTERNATIONAL AMS6373H Pa
23、ge 4 of 73.4.4 Decarburization 3.4.4.1 Tubing ordered ground, turned, or polished shall be free from decarburization on the ground, turned, or polished surfaces. 3.4.4.2 Tubing that 3.4.4.1 is not applicable shall be free from complete decarburization. Partial decarburization shall not exceed the li
24、mits specified in Table 3.Table 3A - Maximum total depth of decarburization, inch/pound unitsNominal Wall Thickness (T)InchDepth of Partial DecarburizationInchIDDepth of Partial DecarburizationInchODDepth of Partial DecarburizationInchID+ODUp to 0.040, incl 0.25T 0.25T 0.30TOver 0.040 to 0.050, incl
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