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 2013 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/AMS5642K AEROSPACE MATERIAL SPECIFICATION AMS5642 REV. K Issued 1942-09 Revised 2
5、002-01 Reaffirmed 2013-11 Superseding AMS5642J Steel, Corrosion and Heat-Resistant, Bars, Wire, and Forgings 18Cr - 10.5Ni - 0.60Cb Free-Machining, Solution Heat Treated (Composition similar to: Type 1 UNS S34720) (Composition similar to: Type 2 UNS S34723) RATIONALE AMS5642K has been reaffirmed to
6、comply with the SAE five-year review policy. 1. SCOPE:1.1 Form: This specification covers two types of free-machining, corrosion and heat-resistant steel in the form of bars, wire, forgings, and forging stock.1.2 Application: These products have been used typically for parts on which the amount of m
7、achining warrants the use of a free-machining grade of steel, requiring corrosion resistance similar to the 18-8 type of steel, and which will be subjected to high temperatures during fabrication or in service, but usage is not limited to such applications. 1.2.1 This steel is not intended for parts
8、 to be brazed at temperatures higher than 1350F (732C), or to be fusion welded.1.3 Classification: The steels covered by this specification are classified as follows:Type 1 18Cr - 10.5Ni - 0.26S - 0.60CbType 2 18Cr - 10.5Ni - 0.14P - 0.25Se - 0.60Cb 1.3.1 Unless a specific type is specified, either
9、type may be supplied.SAE INTERNATIONAL AMS5642K Page 2 of 6 2.1 SAE Publications: Available from SAE, 400 Commonwealth Drive, Warrendale, PA 15096-0001 or www.sae.org.AMS 2241 Tolerances, Corrosion and Heat-Resistant Steel, Iron Alloy, Titanium, and Titanium Alloy Bars and WireMAM 2241 Tolerances, M
10、etric, Corrosion and Heat-Resistant Steel, Iron Alloy, Titanium, and Titanium Alloy Bars and WireAMS 2248 Chemical Check Analysis Limits, Corrosion and Heat-Resistant Steels and Alloys, Maraging and Other Highly-Alloyed Steels, and Iron AlloysAMS 2371 Quality Assurance Sampling and Testing, Corrosio
11、n and Heat-Resistant Steels and Alloys, Wrought Products and Forging StockAMS 2374 Quality Assurance Sampling and Testing, Corrosion and Heat-Resistant Steel and Alloy ForgingsAMS 2806 Identification, Bars, Wire, Mechanical Tubing, and Extrusions, Carbon and Alloy Steels and Corrosion and Heat-Resis
12、tant Steels and AlloysAMS 2808 Identification, Forgings2.2 ASTM Publications: Available from ASTM, 100 Barr Harbor Drive, West Conshohocken, PA 19428-2959 or www.astm.org.ASTM A 262 Detecting Susceptibility to Intergranular Attack in Austenitic Stainless SteelsASTM A 370 Mechanical Testing of Steel
13、ProductsASTM E 353 Chemical Analysis of Stainless, Heat-Resisting, Maraging, and Other Similar Chromium-Nickel-Iron Alloys3. 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 E 353, by spec
14、trochemical methods, or by other analytical methods acceptable to purchaser.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
15、 document unless a specific document issue is specified. When the referenced document has been canceled and no superseding document has been specified, the last published issue of that document shall apply.SAE INTERNATIONAL AMS5642K Page 3 of 6 3.1.1 Determination not required for routine acceptance
16、.3.1.2 Check Analysis: Composition variations shall meet the applicable requirements of AMS 2248.3.2 Condition: The product shall be supplied in the following condition:3.2.1 Bars, Wire, and Forgings: Solution heat treated and descaled.3.2.1.1 Bars and Wire: 3.2.1.1.1 All hexagons regardless of size
17、, other bars 2.75 inches (69.8 mm) and under in nominal diameter or least distance between parallel sides, and wire shall be cold finished.3.2.1.1.2 Bars, other than hexagons, over 2.75 inches (69.8 mm) in nominal diameter or least distance between parallel sides shall be hot finished.3.2.2 Forging
18、Stock: As ordered by the forging manufacturer.3.3 Properties: Bars, wire, and forgings shall conform to the following requirements; hardness and tensile testing shall be performed in accordance with ASTM A 370. 3.3.1 Tensile Properties: Wire shall have tensile strength not higher than 125 ksi (862 M
19、Pa).TABLE 1 - CompositionElementType 1minType 1maxType 2minType 2maxCarbon ManganeseSilicon PhosphorusSulfur ChromiumNickelColumbium Selenium MolybdenumTantalum (see 3.1.1)Copper-0.1817.009.0010 X C-0.08 2.00 1.00 0.0400.35 19.00 12.00 1.10 - 0.75 0.05 0.75 -0.11-17.009.0010 x C0.15-0.08 2.00 1.00 0
20、.17 0.03019.00 12.00 1.10 0.35 0.75 0.05 0.75 SAE INTERNATIONAL AMS5642K Page 4 of 6 3.3.2 Hardness: 3.3.2.1 Bars: Shall be as shown in Table 2, or equivalent (See 8.2), determined approximately at midradius or quarter-thickness.3.3.2.2 Forgings: Shall be not higher than 187 HB, or equivalent (See 8
21、.2)3.3.3 Susceptibility to Intergranular Attack: The product, after sensitizing treatment, shall pass the intergranular corrosion acid test performed in accordance with ASTM A 262, Practice E.3.4 Quality: The product, as received by purchaser, shall be uniform in quality and condition, sound, and, c
22、onsistent with the type of steel involved, free from foreign materials and from imperfections detrimental to usage of the product.3.4.1 Grain flow of die forgings, except in areas which contain flash-line end grain, shall follow the general contour of the forgings showing no evidence of reentrant gr
23、ain flow.3.5 Tolerances: Bars and wire shall conform to all applicable requirements of AMS 2241 or MAM2241.4. QUALITY ASSURANCE PROVISIONS: 4.1 Responsibility for Inspection: The vendor of the product shall supply all samples for vendors tests and shall be responsible for the performance of all requ
24、ired tests. Purchaser reserves the right to sample and to perform any confirmatory testing deemed necessary to ensure that the product conforms to specified requirements.TABLE 2 - HardnessNominal Diameteror Least Distance BetweenParallel Sides InchesNominal Diameteror Least Distance BetweenParallel
25、Sides mmHardness, HBminHardness, HBmaxUp to0.75, inclOver0.75 Up to19.0, inclOver 19.0 170140255241SAE INTERNATIONAL AMS5642K Page 5 of 6 4.2 Classification of Tests: 4.2.1 Acceptance Tests: Composition (3.1), tensile strength of wire (3.3.1), hardness of bar (3.3.2.1) and forgings (3.3.2.2), suscep
26、tibility to intergranular attack (3.3.3), and tolerances (3.5) are acceptance tests and shall be performed on each heat or lot as applicable.4.2.2 Periodic Tests: Grain flow of die forgings (3.4.1) is a periodic test and shall be performed at a frequency selected by the vendor unless frequency of te
27、sting is specified by purchaser.4.3 Sampling and Testing: Shall be as follows:4.3.1 Bars, Wire, and Forging Stock: In accordance with AMS 2371.4.3.2 Forgings: In accordance with AMS 2374.4.4 Reports: The vendor of the product shall furnish with each shipment a report showing the results of tests for
28、 composition of each heat and the results of tests for tensile strength (wire) or hardness (bar/forgings), and susceptibility to intergranular attack of each lot, and stating that the product conforms to the other technical requirements. This report shall include the purchase order number, heat and
29、lot numbers, AMS 5642K, size, and quantity. If forgings are supplied, the size and melt source of stock used to make the forgings shall also be included.4.5 Resampling and Retesting: Shall be as follows:4.5.1 Bars, Wire, and Forging Stock: In accordance with AMS 2371.4.5.2 Forgings: In accordance wi
30、th AMS 2374.5. PREPARATION FOR DELIVERY: 5.1 Sizes: Except when exact lengths or multiples of exact lengths are ordered, straight bars and wire will be acceptable in mill lengths of 6 to 20 feet (1.8to6.1m) but not more than 10% of any shipment shall be supplied in lengths shorter than 10 feet (3 m)
31、.5.2 Identification: Shall be as follows:SAE INTERNATIONAL AMS5642K Page 6 of 6 5.2.1 Bars and Wire: In accordance with AMS 2806.5.2.2 Forgings: In accordance with AMS 2808.5.2.3 Forging Stock: As agreed upon by purchaser and vendor.5.3 Packaging: The product shall be prepared for shipment in accord
32、ance 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 vendor shall mention this specification number and its revision letter i
33、n 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 A change bar ( l ) located in the left margin is for the convenience of the user in locating ar
34、eas where technical revisions, not editorial changes, have been made to the previous issue of this specification. An (R) symbol to the left of the document title indicates a complete revision of the specification, including technical revisions. Change bars and (R) are not used in original publicatio
35、ns, nor in specifications that contain editorial changes only.8.2 Hardness conversion tables for metals are presented in ASTM E 140.8.3 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
36、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 Purchase documents should specify not less than the following:AMS 5642KForm and size or part number of product desiredQuantity of product desired.PREPARED UNDER THE JURISDICTION OF AMS COMMITTEE “F“
