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 reaffirmed, revised, or cancelled. SAE invites your written comments and suggestions. Copyright 2007 SAE International All rights reserved. No part of this publication ma
3、y 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: 724-776-4970 (outside USA)
4、Fax: 724-776-0790 Email: CustomerServicesae.org SAE WEB ADDRESS: http:/www.sae.org AMS 5640U AEROSPACE MATERIAL SPECIFICATION Issued DEC 1939 Revised OCT 2007 Superseding AMS 5640T Steel, Corrosion-Resistant, Bars, Wire, and Forgings 18Cr - 9.0Ni Free Machining (Compositions similar toUNS S30300 (Ty
5、pe 1)UNS S30323 (Type 2)UNS S30310 (Type 3)RATIONALE AMS 5640U revises hardness/tensile testing on bars less than 0.500 inch, and is a Five Year Review and update of this specification. 1. SCOPE 1.1 Form This specification covers three types of a free-machining, corrosion-resistant steel in the form
6、 of bars, wire, forgings, and forging stock. 1.2 Application These products have been used typically for parts on which the amount of machining warrants use of a free-machining grade of steel requiring corrosion resistance similar to the 18-8 type steels but not subjected to temperatures exceeding 7
7、00 F (371 C) during fabrication or in service, but usage is not limited to such applications. 1.3 Classification The steels covered by this specification are classified as follows: Type 1: 18Cr - 9.0Ni - 0.28S Type 2: 18Cr - 9.0Ni - 0.14P - 0.28Se Type 3: 18Cr - 8.5Ni - 3.5Mn - 0.28S 1.3.1 Unless a
8、specific type is ordered, any type may be supplied. Copyright SAE International Provided by IHS under license with SAENot for ResaleNo reproduction or networking permitted without license from IHS-,-,-SAE AMS 5640U - 2 - 2. APPLICABLE DOCUMENTS The issue of the following documents in effect on the d
9、ate 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 specified, the
10、 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 724-776-4970 (outside USA), www.sae.org. AMS 2241 Tolerances, Corrosion and Heat-Resistant Steel,
11、 Iron Alloy, Titanium, and Titanium Alloy Bars and Wire AMS 2248 Chemical Check Analysis Limits, Corrosion and Heat-Resistant Steels and Alloys, Maraging and Other Highly-Alloyed Steels, and Iron Alloys AMS 2371 Quality Assurance Sampling and Testing, Corrosion and Heat-Resistant Steels and Alloys,
12、Wrought Products and Forging Stock AMS 2374 Quality Assurance Sampling and Testing, Corrosion and Heat-Resistant Steel and Alloy Forgings AMS 2806 Identification, Bars, Wire, Mechanical Tubing, and Extrusions, Carbon and Alloy Steels and Corrosion and Heat-Resistant Steels and Alloys AMS 2808 Identi
13、fication, Forgings AS1182 Standard Machining Allowance, Aircraft Quality and Premium Aircraft-Quality Steel Bars and Mechanical Tubing 2.2 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. AST
14、M A 370 Mechanical Testing of Steel Products ASTM E 353 Chemical Analysis of Stainless, Heat-Resisting, Maraging, and Other Similar Chromium-Nickel-Iron Alloys 3. TECHNICAL REQUIREMENTS 3.1 Composition Shall conform to the percentages by weight shown in Table 1, determined by wet chemical methods in
15、 accordance with ASTM E 353, by spectrochemical methods, or by other analytical methods acceptable to purchaser. TABLE 1 - COMPOSITION Element Type 1 min Type 1 max Type 2 min Type 2 max Type 3 min Type 3 max Carbon - 0.15 - 0.15 - 0.15 Manganese - 2.00 - 2.00 2.50 4.50 Silicon - 1.00 - 1.00 - 1.00
16、Phosphorus - 0.15 0.12 0.17 - 0.20 Sulfur 0.15 - - 0.04 0.15 - Chromium 17.00 19.00 17.00 19.00 17.00 19.00 Nickel 8.00 10.00 8.00 10.00 7.00 10.00 Molybdenum - 1.00 - 1.00 - 1.00 Selenium - - 0.15 0.40 - - Copper - 1.00 - 1.00 - 1.00 Copyright SAE International Provided by IHS under license with SA
17、ENot for ResaleNo reproduction or networking permitted without license from IHS-,-,-SAE AMS 5640U - 3 - 3.1.1 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 Forgin
18、gs Solution heat treated free from continuous carbide network and descaled. 3.2.1.1 All hexagons regardless of size, 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. 3.2.1.2 Bars, other than hexagons, over 2.75
19、inches (69.8 mm) in nominal diameter or least distance between parallel sides shall be hot finished or cold finished. 3.2.2 Forging Stock As ordered by the forging manufacturer. 3.3 Properties The product shall conform to the following requirements; hardness and tensile testing shall be performed in
20、 accordance with ASTM A 370: 3.3.1 Hardness 3.3.1.1 Bars larger than 0.500 inch (12.7 mm) round or least distance between parallel sides. Shall be as shown in Table 2, or equivalent (See 8.2), determined at approximate mid-radius or quarter thickness. TABLE 2 - BRINELL HARDNESS Nominal Diameter or L
21、east Distance Between Parallel Sides Inches Nominal Diameter or Least Distance Between Parallel Sides Millimeters Hardness min Hardness max 0.500 to 2.00, incl Over 2.00 12.7 to 50.8, incl Over 50.8 140 - 255 255 3.3.1.2 Wire and bars less than 0.500” Shall have hardness not higher than 26 HRC, or e
22、quivalent (See 8.2), or tensile strength not higher than 125 ksi (862 MPa). 3.3.1.3 Forgings Shall have hardness not higher than 187 HB, or equivalent (See 8.2). 3.4 Quality The product, as received by purchaser, shall be uniform in quality and condition, sound, and, consistent with the type of stee
23、l involved, free from foreign materials and from imperfections detrimental to usage of the product. Copyright SAE International Provided by IHS under license with SAENot for ResaleNo reproduction or networking permitted without license from IHS-,-,-SAE AMS 5640U - 4 - 3.4.1 Bars and wire ordered hot
24、 rolled or cold drawn or ground, turned, or polished shall, after removal of the standard machining allowance in accordance with AS1182, be free from seams, laps, tears, and cracks open to the ground, turned, or polished surface. 3.4.2 Grain flow of die forgings, except in areas which contain flash-
25、line end grain, shall follow the general contour of the forgings showing no evidence of reentrant grain flow. 3.5 Tolerances Bars and wire shall conform to all applicable requirements of AMS 2241. 4. QUALITY ASSURANCE PROVISIONS 4.1 Responsibility for Inspection The vendor of the product shall suppl
26、y all samples for vendors 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. 4.2 Classification of Tests 4.2.1 Accepta
27、nce Tests Composition (3.1), hardness of bars larger than 0.500 inch (12.7 mm) round or least distance between parallel sides (3.3.1.1), hardness of forgings (3.3.1.2), hardness or tensile properties if wire or bars less than 0.500” (3.3.1.3), and tolerances (3.5) are acceptance tests and shall be p
28、erformed on each heat or lot as applicable. 4.2.2 Periodic Tests Condition (3.2.1) and grain flow of die forgings (3.4.1) are periodic tests and shall be performed at a frequency selected by the vendor unless frequency of testing is specified by purchaser. 4.3 Sampling and Testing Shall be as follow
29、s: 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 tubing shall furnish with each shipment a report showing the following results of tests and relevant information: 4.4.1 For each heat Composition. 4.4.2 For e
30、ach lot of bars, wire, and forgings Hardness of bars over 0.500 inch (12.7 mm) round or least distance between parallel sides or forgings If wire or bars less than 0.500 inch (12.7 mm) round or least distance between parallel sides, hardness or tensile strength. Copyright SAE International Provided
31、by IHS under license with SAENot for ResaleNo reproduction or networking permitted without license from IHS-,-,-SAE AMS 5640U - 5 - 4.4.3 A statement that the product conforms to the other technical requirements. 4.4.4 Purchase order number Heat and lot numbers AMS 5640U Size Quantity. 4.4.5 If forg
32、ings are supplied, the size and melt source of stock used to make the forgings 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 with AMS 2374. 5. PREPARATION FOR DELIVERY 5.1 Sizes Except when exact length
33、s or multiples of exact lengths are ordered, straight bars and wire will be acceptable in mill lengths of 6 to 20 feet (1.8 to 6.1 m) but not more than 10% of any shipment shall be supplied in lengths shorter than 10 feet (3 m). 5.2 Identification Shall be as follows: 5.2.1 Bars and Wire In accordan
34、ce 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 accordance with commercial practice and in compliance with applicable rules and regulations pertaining to the handling
35、, 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 in all quotations and when acknowledging purchase orders. Copyright SAE International Provided by IHS under licens
36、e with SAENot for ResaleNo reproduction or networking permitted without license from IHS-,-,-SAE AMS 5640U - 6 - 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 (|) located in the left ma
37、rgin is for the convenience of the user in locating areas where technical revisions, not editorial changes, have been made to the previous issue of a specification. An (R) symbol to the left of the document title indicates a complete revision of the specification, including technical revision. Chang
38、e bars and (R) are not used in original publications, nor in specifications that contain editorial revisions 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 Fahrenhe
39、it 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 Purchase documents should specify not less than the following: AMS 5640U Form and size or part number of product desired Type of product desired Quantity of product desired. PREPARED BY AMS COMMITTEE “F” Copyright SAE International Provided by IHS under license with SAENot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
