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 2014 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/AMS5845J AEROSPACE MATERIAL SPECIFICATION AMS5845 REV. J Issued 1972-11 Revised 2
5、014-04 Superseding AMS5845H Alloy, Corrosion-Resistant, Round Bars 20Cr - 35Ni - 35Co - 10Mo Vacuum Induction Plus Consumable Electrode Vacuum Remelted Solution Heat Treated, Work Strengthened, and Aged (Composition similar to UNS R30035) RATIONALE AMS5845J revises Condition (3.3.1), Properties (3.5
6、.1) and Reports (4.4, 4.4.5, 4.4.6) and is a Five Year Review and update of this specification. 1. SCOPE 1.1 Form This specification covers a high-strength, corrosion-resistant alloy in the form of bar up to 1.75 inch (44.4 mm) in diameter (See 8.2). 1.2 Application These bars have been used typical
7、ly for parts requiring a combination of high strength, good tension-tension fatigue strength, toughness, ductility, and exceptionally good corrosion resistance (See 8.2), but usage is not limited to such applications. 2. APPLICABLE DOCUMENTS The issue of the following documents in effect on the date
8、 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 la
9、st 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. AMS2261 Tolerances, Nickel, Nickel Alloy, and Cobalt Alloy
10、Bars, Rods, and Wire AMS2269 Chemical Check Analysis Limits, Nickel, Nickel Alloys, and Cobalt Alloys SAE INTERNATIONAL AMS5845J Page 2 of 5 AMS2371 Quality Assurance Sampling and Testing, Corrosion and Heat-Resistant Steels and Alloys, Wrought Products and Forging Stock AMS2750 Pyrometry AMS2806 Id
11、entification, Bars, Wire, Mechanical Tubing, and Extrusions, Carbon and Alloy Steels and Corrosion and Heat-Resistant Steels and Alloys 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. AS
12、TM E 8/E 8M Tension Testing of Metallic Materials ASTM E 18 Rockwell Hardness of Metallic Materials ASTM E 112 Determining Average Grain Size ASTM E 354 Chemical Analysis of High-Temperature, Electrical, Magnetic, and Other Similar Iron, Nickel, andCobalt Alloys 3. TECHNICAL REQUIREMENTS 3.1 Composi
13、tion Shall conform to the percentages by weight shown in Table 1, determined by wet chemical methods in accordance with ASTM E 354, by spectrochemical methods, or by other analytical methods acceptable to purchaser. TABLE 1 - COMPOSITION Element min max Carbon - 0.025 Manganese - 0.15 Silicon - 0.15
14、 Phosphorus - 0.015 Sulfur - 0.010 Chromium 19.00 21.00 Nickel 33.00 37.00 Molybdenum 9.00 10.50 Titanium - 1.00 Iron - 1.00 Cobalt remainder 3.1.1 Check Analysis Composition variations shall meet the applicable requirements of AMS2269. 3.2 Melting Practice Alloy shall be multiple melted using vacuu
15、m induction melting followed by consumable electrode vacuum remelting. 3.3 Condition Solution heat treated, work strengthened, aged, and centerless ground. SAE INTERNATIONAL AMS5845J Page 3 of 5 3.3.1 Bars shall not be cut from plate (Also see 4.4.5) 3.4 Heat Treatment Bars shall be solution heat tr
16、eated by heating to a temperature within the range 1900 to 1925 F (1038 to 1052 C), holding at the selected temperature within 25 F (14 C) for 4 to 8 hours, and cooling in air to room temperature. Pyrometry for solution heat treatment shall be in accordance with AMS2750. After work strengthening, th
17、e bars shall be aged by heating to a temperature within the range 1000 to 1200 F (538 to 649 C), holding at the selected temperature within 25 F (14 C) for 4 to 4-1/2 hours, and cooling in air to room temperature. 3.5 Properties Bars shall conform to the following requirements (See 8.2): 3.5.1 Tensi
18、le Properties Properties for bars up to 1.75 inches (44.4 mm) shall be as shown in Table 2, determined in accordance with ASTM E 8/E 8M. Properties for larger sizes shall be as agreed upon between producer and purchaser. TABLE 2 - MINIMUM TENSILE PROPERTIES Property Value Tensile Strength 260 ksi (1
19、793 MPa) Yield Strength at 0.2% Offset 230 ksi (1586 MPa) Elongation in 4D 8% Reduction of Area 35% 3.5.2 Hardness Shall be not lower than 44 HRC, or equivalent (See 8.3), determined in accordance with ASTM E 18. Product shall not be rejected on the basis of hardness if the tensile properties of 3.5
20、.1 are acceptable, determined on specimens taken from the same sample as that with nonconforming hardness or from another sample with similar nonconforming hardness. 3.5.3 Average Grain Size Shall be ASTM No. 4 or finer, determined in accordance with ASTM E 112. 3.6 Quality Bars, as received by purc
21、haser, shall be uniform in quality and condition, sound, and free from foreign materials and from imperfections detrimental to usage of the bars. 3.7 Tolerances Shall conform to all applicable requirements of AMS2261. 4. QUALITY ASSURANCE PROVISIONS 4.1 Responsibility for Inspection The vendor of ba
22、rs shall supply 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 bars conform to specified requirements. 4.2 Classification of Tests All
23、 technical requirements are acceptance tests and shall be performed on each heat or lot as applicable. SAE INTERNATIONAL AMS5845J Page 4 of 5 4.3 Sampling and Testing Shall be in accordance with AMS2371 and the following: In testing round bars, specimens for tensile testing (3.5.1) shall be of stand
24、ard proportions in accordance with ASTM E 8/E 8M with either 0.250-inch (6.35-mm) diameter at the reduced parallel gage section or smaller specimens proportional to the standard when required. Specimens shall be machined from the center of bars 0.800 inch (20.32 mm) and under in nominal diameter and
25、 from mid-radius of larger size bars. 4.4 Reports The vendor of the product shall furnish with each shipment a report showing the vendors name and country where the metal was melted (e.g., final melt in the case of metal processed by multiple melting operations) and the following results of tests an
26、d relevant information: 4.4.1 For each heat Composition. 4.4.2 For each lot Tensile properties Hardness Average grain size. 4.4.3 A statement that the product conforms to the other technical requirements. 4.4.4 Purchase order number Heat and lot numbers AMS5845J Size Quantity. 4.4.5 If the ship size
27、/shape is cut from a larger cross section, report the nominal metallurgically worked size (See 3.3.1). 4.4.6 When the product size is outside the size range covered by 3.5.1, the report shall contain a statement to that effect. 4.5 Resampling and Retesting Shall be in accordance with AMS2371. 5. PRE
28、PARATION FOR DELIVERY 5.1 Sizes Except when exact lengths or multiples of exact lengths are ordered, straight bars will be acceptable in mill lengths of 6 to 24 feet (1.8 to 7.3 m) but not more than 25% of any shipment shall be supplied in lengths of 6 to 9 feet (1.8 to 2.7 m), except that for bars
29、weighing over 25 pounds per foot (37 kg/m), short lengths down to 2 feet (610 mm) may be supplied. 5.2 Identification Shall be in accordance with AMS2806. 5.3 Packaging Bars shall be prepared for shipment in accordance with commercial practice and in compliance with applicable rules and regulations
30、pertaining to the handling, packaging, and transportation of the bars to ensure carrier acceptance and safe delivery. SAE INTERNATIONAL AMS5845J Page 5 of 5 6. ACKNOWLEDGMENT A vendor shall mention this specification number and its revision letter in all quotations and when acknowledging purchase or
31、ders. 7. REJECTIONS Bars 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 margin is for the convenience of the user in locating areas where technical revisions, not editorial changes, ha
32、ve been made to the previous 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 This
33、 alloy depends upon combinations of cold working and aging to attain a variety of combinations of strength and ductility. Mill capabilities at the present time are limited to cold drawing bars 1-3/4 inches (44.4 mm) and under in nominal diameter to attain the full properties specified in Table 2. Ho
34、wever, production studies continue toward increasing this maximum bar size limitation. Further, it is to be appreciated different property requirements for larger bar sizes can be negotiated between purchaser and producer. 8.3 Hardness conversion tables for metals are presented in ASTM E 140. Use of
35、 the nickel and nickel alloy table is recommended. 8.4 Terms used in AMS are clarified in ARP1917. 8.5 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 equivalent
36、s of the primary units and are presented only for information. 8.6 Purchase documents should specify not less than the following: AMS5845J Size of bars desired Property and acceptance requirements from the cognizant engineering organization applicable to sizaes outside the range listed in 1.1. Quantity of bars desired. PREPARED BY AMS COMMITTEE “F”
