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 2016 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/AMS5608G AEROSPACE MATERIAL SPECIFICATION AMS5608 REV. G Issued 1971-05 Reaffirme
5、d 2006-04 Revised 2016-10Superseding AMS5608F Cobalt Alloy, Corrosion and Heat Resistant, Sheet, Strip, and Plate 40Co - 22Cr - 22Ni - 14.5W - 0.07La Solution Heat Treated (Composition similar to UNS R30188)RATIONALE AMS5608G revises Heat Treatment (3.3) and Reports (4.4), and is a Five Year Review
6、and update of this specification. 1. SCOPE 1.1 Form This specification covers a corrosion and heat resistant cobalt alloy in the form of sheet, strip, and plate. 1.2 Application These products have been used typically for formed and drawn parts requiring high strength up to 1800 F (982 C) and oxidat
7、ion resistance up to 2000 F (1093 C), but usage is not limited to such applications. 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 revis
8、ion 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 that document shall apply. 2.1 SAE Publications Available from SAE International, 400 Commonwealth Drive, Warre
9、ndale, PA 15096-0001, Tel: 877-606-7323 (inside USA and Canada) or +1 724-776-4970 (outside USA), www.sae.org. AMS2262 Tolerances, Nickel, Nickel Alloy, and Cobalt Alloy Sheet, Strip, and Plate AMS2269 Chemical Check Analysis Limits, Nickel, Nickel Alloys, and Cobalt Alloys AMS2371 Quality Assurance
10、 Sampling and Testing, Corrosion and Heat-Resistant Steels and Alloys, Wrought Products and Forging Stock SAE INTERNATIONAL AMS5608G Page 2 of 7 AMS2750 Pyrometry AMS2807 Identification, Carbon and Low-Alloy Steels, Corrosion and Heat-Resistant Steels and Alloys, Sheet, Strip, Plate, and Aircraft Tu
11、bing ARP1917 Clarification of Terms Used in Aerospace Metals Specifications AS4194 Sheet and Strip Surface Finish Nomenclature 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. ASTM A480/A
12、480M Flat-Rolled Stainless and Heat-Resisting Steel Plate, Sheet and Strip ASTM E8/E8M Tension Testing of Metallic Materials ASTM E21 Elevated Temperature Tension Tests of Metallic Materials ASTM E112 Determining Average Grain Size ASTM E139 Conducting Creep, Creep-Rupture, and Stress-Rupture Tests
13、of Metallic Materials ASTM E290 Bend Testing Material for Ductility ASTM E354 Chemical Analysis of High-Temperature, Electrical, Magnetic, and Other Similar Iron, Nickel, and Cobalt Alloys 3. TECHNICAL REQUIREMENTS 3.1 Composition Shall conform to the percentages by weight shown in Table 1, determin
14、ed by wet chemical methods in accordance with ASTM E354, by spectrochemical methods, or by other analytical methods acceptable to purchaser. Table 1 - Composition Element min max Carbon Manganese Silicon Phosphorus Sulfur Chromium Nickel Tungsten Lanthanum Boron Iron Cobalt 0.05 - 0.20 - - 20.00 20.
15、00 13.00 0.02 - - remainder 0.15 1.25 0.50 0.020 0.015 24.00 24.00 16.00 0.12 0.015 3.00 SAE INTERNATIONAL AMS5608G Page 3 of 7 3.1.1 Check Analysis Composition variations shall meet the applicable requirements of AMS2269. 3.2 Condition The product shall be supplied in the following condition: 3.2.1
16、 Sheet and Strip Hot rolled or cold rolled, solution heat treated, and, unless solution heat treatment is performed in an atmosphere yielding a bright finish, descaled having a surface appearance comparable to the following commercial corrosion-resistant steel finishes as described in ASTM A480/A480
17、M and AS4194, and 3.2.1.1 or 3.2.1.2 as applicable. 3.2.1.1 Sheet No. 2D or better finish. 3.2.1.2 Strip No. 1 or better strip finish. 3.2.2 Plate Hot rolled, solution heat treated, and descaled. 3.3 Heat Treatment The product shall be solution heat treated by heating to a temperature within the ran
18、ge 2125 to 2250 F (1163 to 1232 C), holding at the selected temperature within 25 F (14 C) for a time commensurate with section thickness, and cooling at a rate equivalent to air cooling or faster, except as specified in 3.3.1. Pyrometry shall be in accordance with AMS2750. 3.3.1 Continuous Heat Tre
19、ating Process parameters (e.g., furnace temperature set points, heat input, travel rate, etc.) for continuous heat treating lines shall be established by the material producer and validated by testing of product to the other requirements of this specification. 3.3.2 Any thermal treatment following s
20、olution heat treatment as in 3.3 shall not involve use of temperatures higher than 2050 F 25 F (1121 C 14 C). 3.4 Properties The product shall conform to the following requirements: 3.4.1 Tensile Properties 3.4.1.1 At Room Temperature Shall be as shown in Table 2, determined in accordance with ASTM
21、E8/E8M. 3.4.1.1.1 For product 0.010 inch (0.25 mm) and under in nominal thickness, properties may be established using a sample up to 0.025 inch (0.64 mm) in nominal thickness from the same master coil and heat. The suppliers certification of test shall indicate the thickness at which the tensile te
22、st was performed SAE INTERNATIONAL AMS5608G Page 4 of 7 Table 2A - Minimum tensile properties, inch/pound units Nominal Thickness Inch Tensile Strength ksi Yield Strength at 0.2% Offset ksi Elongation in 2 Inches or 4D % Up to 0.010, incl Over 0.010. to 0.020, incl Over 0.020 125 125 125 55 55 55 Re
23、port 40 45 Table 2B - Minimum tensile properties, SI units Nominal Thickness Millimeter Tensile Strength MPa Yield Strength at 0.2% Offset MPa Elongation in 50.8 mm or 4D % Up to 0.25, incl Over 0.25 to 0.51, incl Over 0.51 862 862 862 379 379 379 Report 40 45 3.4.1.2 At 1200 F (649 C) Shall be as s
24、hown in Table 3, determined in accordance with ASTM E21 on specimens heated to 1200 F 5 F (649 C 3 C), held at heat for not less than 20 minutes before testing, and tested at 1200 F 5 F (649 C 3 C). 3.4.1.2.1 For product 0.010 inch (0.25 mm) and under in nominal thickness, properties may be establis
25、hed using a sample up to 0.025 inch (0.64 mm) in nominal thickness from the same master coil and heat. The suppliers certification of test shall indicate the thickness at which the tensile test was performed Table 3A - Minimum tensile properties, inch/pound units Nominal Thickness Inch Tensile Stren
26、gth ksi Yield Strength at 0.2% Offset ksi Elongation in 2 Inches or 4D % Up to 0.010, incl Over 0.010 to 0.020, incl Over 0.020 90 90 90 36.0 36.0 36.0 Report 40 50 Table 3B - Minimum tensile properties, SI units Nominal Thickness Millimeter Tensile Strength MPa Yield Strength at 0.2% Offset MPa Elo
27、ngation in 50.8 mm or 4D % Up to 0.25, incl Over 0.25 to 0.51, incl Over 0.51 621 621 621 248 248 248 Report 40 50 SAE INTERNATIONAL AMS5608G Page 5 of 7 3.4.2 Bending Product 0.1874 inch (4.760 mm) and under in nominal thickness shall be tested in accordance with ASTM E290 using a sample prepared n
28、ominally 0.75 inch (19.0 mm) in width with its axis of bending parallel to the direction of rolling and shall withstand without cracking when bending at room temperature through an angle of 180 degrees around a diameter equal to the bend factor shown in Table 4 times the nominal thickness of the pro
29、duct. In case of dispute, the results of tests using the guided bend test of ASTM E290 shall govern. Table 4 - Bending parameters Nominal Thickness Inch Nominal Thickness Millimeters Bend Factor Up to 0.050, incl Over 0.050 to 0.1874, incl Up to 1.27, incl Over 1.27 to 4.760, incl 1.5 2 3.4.3 Averag
30、e Grain Size Shall be ASTM No. 4 or finer, determined in accordance with ASTM E112. 3.4.4 Stress-Rupture Properties at 1700 F (927 C) A tensile specimen, maintained at 1700 F 3 F (927 C 2 C) while the load required to produce the initial axial stress shown in Table 5 or higher stress is applied cont
31、inuously, shall not rupture in less than 23 hours. The test shall be continued to rupture without change of load. Elongation after rupture, measured at room temperature, shall be as specified in Table 5. Tests shall be conducted in accordance with ASTM E139. Table 5A - Stress-rupture properties, inc
32、h/pound units Nominal Thickness Inches Stress ksi Elongation in 2 Inches or 4D %, min Up to 0.020, incl Over 0.020 9.0 11.0 8 15 Table 5B - Stress-rupture properties, SI units Nominal Thickness Millimeter Stress MPa Elongation in 50.8 mm or 4D %, min Up to 0.51, incl Over 0.51 62.1 75.8 8 15 3.4.4.1
33、 The test of 3.4.4 may be conducted using incremental loading. In such case, the load required to produce the applicable initial axial stress specified in Table 5 or higher stress shall be used to rupture or for 23 hours, whichever occurs first. After the 23 hours and at intervals of 8 hours minimum
34、, thereafter, the stress shall be increased in increments of 2.0 ksi (13.8 MPa). Time to rupture and elongation requirements shall be as specified in 3.4.4. 3.4.4.2 For product 0.010 inch (0.25 mm) and under in nominal thickness, stress rupture properties may be established using a sample up to 0.02
35、5 inch (0.64 mm) in nominal thickness from the same master coil and heat. The suppliers certification of test shall indicate the thickness at which the stress rupture test was performed. SAE INTERNATIONAL AMS5608G Page 6 of 7 3.4.5 Oxidation Resistance A specimen representing each heat shall be prep
36、ared in accordance with 3.4.5.1, tested in accordance with 3.4.5.2, and meet the requirements of 3.4.5.3. 3.4.5.1 Specimens shall have not less than 1.5 in2(9.7 cm2) test surface in excess of material required for fixturing. Test surfaces shall be hand polished, using 120 grit or finer silicon carbi
37、de paper, and degreased. Specimens may be fixtured during test by insertion into inert ceramic brick or by suspension from inert ceramic rods. Specimens shall not be placed in crucibles. 3.4.5.2 Specimens shall be subjected to four cycles; each cycle shall consist of heating to a temperature within
38、the range 2000 to 2100 F (1093 to 1149 C), holding at the selected temperature within 25 F (14 C) for 25 hours 1 hour, and air cooling to 300 F (149 C) or lower between cycles. Heating shall be performed in a furnace which provides natural convection air flow such that test surfaces are equally expo
39、sed. 3.4.5.3 A polished cross-section, examined at not lower than 500X magnification, shall have not more than 0.0015 inch (0.038 mm) average affected metal (that metal converted to oxide scale plus any continuous intergranular oxidation) per side. 3.5 Quality The product, as received by purchaser,
40、shall be uniform in quality and condition, sound, and free from foreign materials and from imperfections detrimental to usage of the product. 4. QUALITY ASSURANCE PROVISIONS 4.1 Responsibility for Inspection The producer of the product shall supply all samples for producers tests and shall be respon
41、sible 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 All technical requirements are acceptance tests and shall be per
42、formed on each heat or lot as applicable. 4.3 Sampling and Testing Shall be in accordance with AMS2371 and as specified in 3.4.5. 4.4 Reports The producer of the product shall furnish with each shipment a report showing the producers name and the country where the metal was melted (e.g., final melt
43、in the case of metal processed by multiple melting operations) and the results of tests for composition and oxidation resistance of each heat and for room temperature and 1200 F (649 C) tensile, bending, average grain size, and stress-rupture properties of each lot, and stating that the product conf
44、orms to the other technical requirements. This report shall include the purchase order number, heat and lot numbers, AMS5608G, product form, size, and quantity. 4.5 Resampling and Retesting Shall be in accordance with AMS2371 and as specified in 3.4.5. SAE INTERNATIONAL AMS5608G Page 7 of 7 5. PREPA
45、RATION FOR DELIVERY 5.1 Identification Shall be in accordance with AMS2807. 5.2 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, packaging, and transportation of the product
46、 to ensure carrier acceptance and safe delivery. 6. ACKNOWLEDGMENT A producer shall mention this specification number and its revision letter in all quotations and when acknowledging purchase orders. 7. REJECTIONS Product not conforming to this specification, or to modifications authorized by purcha
47、ser, will be subject to rejection. 8. NOTES 8.1 Revision Indicator A change bar (l) located in the left margin is for the convenience of the user in locating areas where technical revisions, not editorial changes, have been made to the previous issue of this document. An (R) symbol to the left of th
48、e 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 Terms used in AMS are clarified in ARP1917. 8.3 Dimensions and properties in inch/pound
49、units and the Fahrenheit 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. 8.4 Purchase documents should specify not less than the following: AMS5608G Product form and size of product desired Quantity of product desired. PREPAR
