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 2014 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/AMS5758JAEROSPACE MATERIAL SPECIFICATIONAMS5758 REV. JIssued 1971-05Reaffirmed 2007-08Revised
5、 2014-04Superseding AMS5758GAlloy, Corrosion-Resistant, Bars20Cr - 35Ni - 35Co - 10MoVacuum Induction Plus Consumable Electrode Vacuum RemeltedSolution Heat Treated for Work Strengthening(Composition similar to UNS R30035)RATIONALEAMS5758J revises Condition (3.3.1), Reports (4.4, 4.4.5), and Prepara
6、tion for Delivery (5.1), and is a Five Year Review and update of this specification.1. SCOPE1.1 FormThis specification covers a high-strength, corrosion-resistant alloy in the form of bars.1.2 ApplicationThese bars have been used typically for applications requiring a combination of high strength, g
7、ood tension-tension fatigue strength, toughness, ductility, and exceptionally good corrosion resistance after work strengthening and aging (See 8.2), 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
8、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 last published issue of t
9、hat document shall apply.2.1 SAE PublicationsAvailable 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 Bars, Rods, and WireAMS226
10、9 Chemical Check Analysis Limits, Nickel, Nickel Alloys, and Cobalt AlloysSAE INTERNATIONAL AMS5758J Page 2 of 6AMS2371 Quality Assurance Sampling and Testing, Corrosion and Heat-Resistant Steels and Alloys, Wrought Products and Forging StockAMS2750 PyrometryAMS2806 Identification, Bars, Wire, Mecha
11、nical Tubing, and Extrusions, Carbon and Alloy Steels and Corrosion and Heat-Resistant Steels and Alloys2.2 ASTM PublicationsAvailable from ASTM International, 100 Barr Harbor Drive, P.O. Box C700, West Conshohocken, PA 19428-2959, Tel: 610-832-9585, www.astm.org.ASTM E 8/E 8M Tension Testing of Met
12、allic MaterialsASTM E 10 Brinell Hardness of Metallic MaterialsASTM E 112 Determining Average Grain SizeASTM E 354 Chemical Analysis of High-Temperature, Electrical, Magnetic, and Other Similar Iron, Nickel, and Cobalt Alloys3. TECHNICAL REQUIREMENTS3.1 CompositionShall conform to the percentages by
13、 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 - COMPOSITIONElement min maxCarbon - 0.025Manganese - 0.15Silicon - 0.15Phosphorus - 0.015Sulfur - 0.010Chromium 19.0
14、0 21.00Nickel 33.00 37.00Molybdenum 9.00 10.50Titanium - 1.00Iron - 1.00Cobalt remainder3.1.1 Check AnalysisComposition variations shall meet the applicable requirements of AMS2269.3.2 Melting PracticeAlloy shall be multiple melted using vacuum induction melting followed by consumable electrode vacu
15、um remelting.3.3 ConditionSolution heat treated and centerless ground.SAE INTERNATIONAL AMS5758J Page 3 of 63.3.1 Bars shall not be cut from plate (Also see 4.4.5).3.4 Solution Heat TreatmentBars shall be solution heat treated by heating to a temperature within the range 1900 to 1925 F (1038 to 1052
16、 C), holding at the selected temperature within 25 F (14 C) for 4 to 8 hours, and cooling in air to room temperature. Pyrometry shall be in accordance with AMS2750.3.5 PropertiesBars shall conform to the following requirements:3.5.1 As Solution Heat Treated3.5.1.1 Tensile PropertiesShall be as shown
17、 in Table 2, determined in accordance with ASTM E 8/E 8M.TABLE 2 - TENSILE PROPERTIES AS SOLUTION HEAT TREATEDProperty ValueTensile Strength 115 to 145 ksi (793 to 1000 MPa)Yield Strength at 0.2% Offset 35.0 to 65 ksi (241 to 448 MPa)Elongation in 4D, min 50%Reduction of Area, min 65%3.5.1.2 Hardnes
18、sShall be not higher than 241 HB, or equivalent (See 8.3), determined in accordance with ASTM E 10. Product shall not be rejected on the basis of hardness if the tensile properties of 3.5.1.1 are acceptable, determined on specimens taken from the same sample as that with nonconforming hardness or fr
19、om another sample with similar nonconforming hardness.3.5.1.3 Average Grain SizeShall be ASTM No. 4 or finer, determined in accordance with ASTM E 112.3.5.2 After Cold Working and AgingBars shall have the following properties after being suitably cold worked (See 8.4) and aged by heating to a temper
20、ature 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.3.5.3 Tensile PropertiesShall be as shown in Table 3, determined in accordance with ASTM E 8/E 8M.TABLE 3 - MINIMUM TENSILE PROPER
21、TIES AFTER COLD WORKING AND AGINGProperty ValueTensile Strength 260 ksi (1793 MPa)Yield Strength at 0.2% Offset 230 ksi (1586 MPa)Elongation in 4D 8%Reduction of Area 35%3.6 QualityBars, as received by purchaser, shall be uniform in quality and condition, sound, and free from foreign materials and f
22、rom imperfections detrimental to usage of the bars.SAE INTERNATIONAL AMS5758J Page 4 of 63.7 TolerancesShall conform to all applicable requirements of AMS2261.4. QUALITY ASSURANCE PROVISIONS4.1 Responsibility for InspectionThe vendor of bars shall supply all samples for vendors tests and shall be re
23、sponsible 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 Tests4.2.1 Acceptance TestsThe following requirements are acceptance te
24、sts and shall be performed on each heat or lot as applicable:4.2.1.1 Composition (3.1) of each heat.4.2.1.2 Tensile properties (3.5.1.1), hardness (3.5.1.2), and average grain size (3.5.1.3) of each lot as solution heat treated.4.2.1.3 Tolerances (3.7).4.2.2 Periodic TestsTensile properties (3.5.2.1
25、) after cold working and aging is a periodic test and shall be performed at a frequency selected by the vendor unless frequency of testing is specified by purchaser.4.3 Sampling and TestingShall be in accordance with AMS2371 and the following.4.3.1 Specimens for tensile testing shall be of standard
26、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 f
27、rom mid-radius of larger size bars.4.4 ReportsThe 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 and re
28、levant information:4.4.1 For each heatComposition.4.4.2 For each lot as solution heat treatedTensile propertiesHardnessAverage grain size.4.4.3 A statement that the product conforms to the other technical requirements.SAE INTERNATIONAL AMS5758J Page 5 of 64.4.4 Purchase order numberHeat and lot numb
29、ersAMS5758JSizeQuantity.4.4.5 If the ship size/shape is cut from a larger cross section, report the nominal metallurgically worked size (See 3.3.1).4.5 Resampling and RetestingShall be in accordance with AMS2371.5. PREPARATION FOR DELIVERY5.1 SizesExcept when exact lengths or multiples of exact leng
30、ths are ordered, straight bars will be acceptable in lengths of 6 to 20 feet (1.8 to 6.1 m) but not more than 10% in any shipment shall be supplied in lengths shorter than 10 feet (3 m).5.2 IdentificationShall be in accordance with AMS2806.5.3 PackagingBars shall be prepared for shipment in accordan
31、ce with commercial practice and in compliance with applicable rules and regulations pertaining to the handling, packaging, and transportation of the bars to ensure carrier acceptance and safe delivery.6. ACKNOWLEDGMENTA vendor shall mention this specification number and its revision letter in all qu
32、otations and when acknowledging purchase orders.7. REJECTIONSBars not conforming to this specification, or to modifications authorized by purchaser, will be subject to rejection.8. NOTES8.1 A change bar (|) located in the left margin is for the convenience of the user in locating areas where technic
33、al revisions, not editorial changes, have 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 c
34、ontain editorial changes only.8.2 This alloy depends on combinations of cold working and aging to attain a variety of combinations of strength and ductility. Mill capabilities are limited to cold drawing bars 1-3/4 inches (44.4 mm) and under in nominal diameter to attain the full properties specifie
35、d in 3.5.2.1. 8.3 Hardness conversion tables for metals are presented in ASTM E 140. Use of the nickel and nickel alloy table is recommended.8.4 The referee procedure to confirm ability of the bars to meet the requirements of 3.5.2 shall use a straight draw bench at room temperature in which a round
36、 bar is cold reduced 53% 1% in cross-sectional area to a smaller size round bar, followed by aging as in 3.5.2 and tensile testing.SAE INTERNATIONAL AMS5758J Page 6 of 68.5 Terms used in AMS are clarified in ARP1917.8.6 Dimensions and properties in inch/pound units and the Fahrenheit temperatures ar
37、e primary; dimensions and properties in Sl units and the Celsius temperatures are shown as the approximate equivalents of the primary units and are presented only for information.8.7 Purchase documents should specify not less than the following:AMS5758JSize of bars desiredQuantity of bars desired.PREPARED BY AMS COMMITTEE “F”
