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/AMS5772E AEROSPACE MATERIAL SPECIFICATION AMS5772 REV. E Issued 1971-05 Reaffirme
5、d 2009-06 Revised 2016-02 Superseding AMS5772D Cobalt Alloy, Corrosion and Heat-Resistant, Bars, Forgings, and Rings 40Co - 22Cr - 22Ni - 14.5W - 0.07La Solution Heat Treated (Composition similar to UNS R30188) RATIONALE AMS5772E revises Condition (3.2.1.1), Properties (3.4.1.3.1) and Reports (4.5),
6、 and is a Five Year Review and update of this specification. 1. SCOPE 1.1 Form This specification covers a corrosion and heat-resistant cobalt alloy in the form of bars, forgings, flash welded rings, and stock for forging or flash welded rings. 1.2 Application These products have been used typically
7、 for parts requiring high strength up to 1800 F (982 C) and oxidation 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 ex
8、tent 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 that document shall apply. 2.1 SAE Publicatio
9、ns Available from SAE International, 400 Commonwealth Drive, Warrendale, PA 15096-0001, Tel: 877-606-7323 (inside USA and Canada) or +1 724-776-4970 (outside USA), www.sae.org. AMS2261 Tolerances, Nickel, Nickel Alloy, and Cobalt Alloy Bars, Rods, and Wire AMS2269 Chemical Check Analysis Limits, Nic
10、kel, Nickel Alloys, and Cobalt Alloys AMS2371 Quality Assurance Sampling and Testing, Corrosion and Heat-Resistant Steels and Alloys, Wrought Products and Forging Stock SAE INTERNATIONAL AMS5772E Page 2 of 7 AMS2374 Quality Assurance Sampling and Testing, Corrosion and Heat-Resistant Steel and Alloy
11、 Forgings AMS2750 Pyrometry AMS2806 Identification Bars, Wire, Mechanical Tubing, and Extrusions, Carbon and Alloy Steels and Corrosion and Heat-Resistant Steels and Alloys AMS2808 Identification Forgings AMS7490 Rings, Flash Welded, Corrosion and Heat-Resistant Austenitic Steels and Austenitic-Type
12、 Alloys, or Precipitation-Hardenable 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. ASTM E8/E8M Tension Testing of Metallic Materials ASTM E10 Brinell Hardness of Metallic Materi
13、als ASTM E139 Creep, Creep-Rupture, and Stress-Rupture Tests of Metallic Materials 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 Ta
14、ble 1, determined 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 0.05 0.15 Manganese - 1.25 Silicon 0.20 0.50 Phosphorus - 0.020 Sulfur - 0.015 Chromium 20.00 24.00
15、 Nickel 20.00 24.00 Tungsten 13.00 16.00 Lanthanum 0.02 0.12 Boron - 0.015 Iron - 3.00 Cobalt remainder SAE INTERNATIONAL AMS5772E 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 c
16、ondition: 3.2.1 Bars Hot finished and solution heat treated; round bars shall be ground or turned. 3.2.1.1 Bars shall not be cut from plate (also see 4.5.5). 3.2.2 Forgings and Flash Welded Rings Solution heat treated. Surface finish shall be as agreed upon by purchaser and the forging or flash weld
17、ed ring manufacturer. 3.2.2.1 Flash welded rings shall not be supplied unless specified or permitted on purchasers part drawing. When supplied, rings shall be manufactured in accordance with AMS7490. 3.2.3 Stock for Forging or Flash Welded Rings As ordered by the forging or flash welded ring manufac
18、turer. 3.3 Solution Heat Treatment Bars, forgings, and flash welded rings shall be solution heat treated by heating to 2150 F 25 F (1177 C 14 C), holding at heat for a time commensurate with cross-sectional thickness, and cooling at a rate which will produce product meeting the requirements of 3.4.1
19、.1, 3.4.1.2, and 3.4.1.3. Pyrometry shall be in accordance with AMS2750. 3.3.1 Any thermal treatment following solution 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
20、Bars, Forgings, and Flash Welded Rings 3.4.1.1 Tensile Properties Specimens, taken in the longitudinal direction from bars, in the circumferential direction from parent metal of flash welded rings, and from forgings in locations agreed upon by purchaser and producer, shall have the properties shown
21、in Table 2, determined in accordance with ASTM E8/E8M. Table 2 - Minimum tensile properties Property Value Tensile Strength 125 ksi (862 MPa) Yield Strength at 0.2% Offset 55 ksi (379 MPa) Elongation in 4D 45% SAE INTERNATIONAL AMS5772E Page 4 of 7 3.4.1.2 Hardness Shall be as follows, determined in
22、 accordance with ASTM E10: 3.4.1.2.1 Bars Not higher than 302 HB, or equivalent (see 8.2), determined approximately midway between center and surface. 3.4.1.2.2 Forgings and Flash Welded Rings Not higher than 293 HB, or equivalent (see 8.2). 3.4.1.3 Stress-Rupture Properties at 1700 F (927 C) A tens
23、ile specimen, maintained at 1700 F 3 F (927 C 2 C) while a load sufficient to produce an initial axial stress of 13.0 ksi (90 MPa) or higher is applied continuously to specimens from bars and flash welded rings and of 12.0 ksi (83 MPa) or higher is similarly applied to specimens from forgings, shall
24、 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 not less than 15% in 4D. Test shall be conducted in accordance with ASTM E139. 3.4.1.3.1 The test of 3.4.1.3 may be conducted using incr
25、emental loading. In such case, the load required to produce the applicable initial axial stress specified in 3.4.1.3 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, thereafter, the stress shall be increased i
26、n increments of 2.0 ksi (14 MPa). Time to rupture and elongation requirements shall be as specified in 3.4.1.3. 3.4.1.4 Oxidation Resistance Shall be as follows, determined in accordance with 4.4.1: 3.4.1.4.1 Metal converted to oxide scale plus any continuous intergranular oxidation shall not exceed
27、 an average of 0.0015 inch (0.038 mm) on each side or 0.003 inch (0.08 mm) on each specimen. 3.4.1.4.2 Specimens displaying localized areas greater than 0.062 inch (1.57 mm) in diameter with excessive oxidation attack, unless such attack can be attributed to contact with ceramic supports, shall be c
28、onsidered invalid and the test repeated. If the condition is duplicated, the product is not acceptable. 3.4.2 Forging Stock When a sample of stock is forged to a test coupon and solution heat treated as in 3.3, specimens taken from the heat treated coupon shall conform to the requirements of 3.4.1.1
29、, 3.4.1.2.2, 3.4.1.3, and 3.4.1.4. If specimens taken from the stock after heat treatment as in 3.3 conform to the requirements of 3.4.1.1, 3.4.1.2.2, 3.4.1.3, and 3.4.1.4, the tests shall be accepted as equivalent to tests of a forged coupon. 3.4.3 Stock for Flash Welded Rings Specimens taken from
30、the stock after solution heat treatment as in 3.3 shall conform to the requirements of 3.4.1.1, 3.4.1.2.2, 3.4.1.3, and 3.4.1.4. 3.5 Quality The product, as received by purchaser, shall be uniform in quality and condition, sound, and free from foreign materials and from imperfections detrimental to
31、usage of the product. 3.5.1 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 grain flow. SAE INTERNATIONAL AMS5772E Page 5 of 7 3.6 Tolerances Bars shall conform to all applicable require
32、ments of AMS2261. 4. QUALITY ASSURANCE PROVISIONS 4.1 Responsibility for Inspection The producer of the product shall supply all samples for producers tests and shall be responsible for the performance of all required tests. Purchaser reserves the right to sample and to perform any confirmatory test
33、ing deemed necessary to ensure that the product conforms to specified requirements. 4.2 Classification of Tests 4.2.1 Acceptance Tests Composition (3.1), tensile properties (3.4.1.1), hardness (3.4.1.2), stress-rupture properties (3.4.1.3), and oxidation resistance (3.4.1.4) are acceptance tests and
34、 shall be performed on each heat or lot as applicable. 4.2.2 Periodic Tests Tests of forging stock (3.4.2) and of stock for flash welded rings (3.4.3) to demonstrate ability to develop required properties and grain flow of die forgings (3.5.1) are periodic tests and shall be performed at a frequency
35、 selected by the producer unless frequency of testing is specified by purchaser. 4.3 Sampling and Testing Shall be as follows: 4.3.1 Bars, Flash Welded Rings, and Stock for Forging or Flash Welded Rings In accordance with AMS2371. 4.3.2 Forgings In accordance with AMS2374. 4.4 Test Methods 4.4.1 Oxi
36、dation Resistance 4.4.1.1 Specimen Preparation Specimens shall have surface area not less than 1.5 in2 (9.7 cm2) available for exposure in excess of material required for fixturing. Both sides of the specimen shall have a 120 grit surface finish. Specimens dimensions shall be measured within 0.0003
37、inch ( 0.008 mm). Specimens shall be degreased. 4.4.1.2 Testing Specimens shall be subjected to four cycles, each cycle consisting of heating to 2000 to 2100 F (1093 to 1149 C), holding at the selected temperature within 25 F (14 C) for 25 hours 1 hour, and cooling in air to 300 F (149 C) or lower b
38、etween each cycle for a total of 100 hours 4 hours at heat. Specimens may be partially inserted into inert ceramic bricks or suspended from inert ceramic rods or suitable metallic rods, but shall not be placed in crucibles. The specimens may be tested in a muffle or comparable furnace providing air
39、flow is such that the required surface areas are equally exposed to the flowing air and temperature. SAE INTERNATIONAL AMS5772E Page 6 of 7 4.4.1.3 Examination Test specimens shall be cross sectioned and examined metallographically in the as-polished condition at not lower than 500X magnification. N
40、ot less than eight randomly selected surface areas, 0.008 inch (0.20 mm) in length, shall be measured and the values averaged to determine compliance with 3.4.1.4. 4.5 Reports The producer of the product shall furnish with each shipment a report showing the producers name and country where the metal
41、 was melted (e.g., final melt in the case of metal processed by multiple melting operations) and the following results of tests and relevant information: 4.5.1 For each heat: Composition. 4.5.2 For each lot of bars, forgings, and flash welded rings: Tensile Properties Hardness Stress-rupture propert
42、ies Oxidation resistance. 4.5.3 A statement that the product conforms to the other technical requirements. 4.5.4 Purchase order number Heat and lot numbers AMS5772E Size Quantity. 4.5.5 If the ship size/shape is cut from a larger cross section, report the nominal metallurgically worked size (also se
43、e 3.2.1.1) 4.5.6 If forgings are supplied, the size and melt source of stock used to make the forgings. 4.5.7 The producer of stock for forging or flash welded rings shall furnish with each shipment a report showing the producers name and country where the metal was melted (e.g., final melt in the c
44、ase of metal processed by multiple melting operations) and the results of tests for composition of each heat. This report shall include the purchase order number, AMS5772E, size and quantity. 4.6 Resampling and Retesting Shall be as follows: 4.6.1 Bars, Flash Welded Rings, and Stock for Forging or F
45、lash Welded Rings In accordance with AMS2371. 4.6.2 Forgings In accordance with AMS2374. 5. PREPARATION 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 20 feet (1.8 to 6.1 m), but not more than 10% o
46、f any shipment shall be supplied in lengths shorter than 10 feet (3 m). SAE INTERNATIONAL AMS5772E Page 7 of 7 5.2 Identification Shall be as follows: 5.2.1 Bars In accordance with AMS2806. 5.2.2 Forgings In accordance with AMS2808. 5.2.3 Flash Welded Rings and Stock for Forging or Flash Welded Ring
47、s As agreed upon by purchaser and producer. 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, packaging, and transportation of the product to ensure carrier acceptance an
48、d 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 purchaser, will be subject to rejectio
49、n. 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 the document title indicates a complete revision of the document, including technical revisions. Change bars and (
