1、Cobalt Alloy, Corrosion and Heat-Resistant, Bars, Forgings, and Rings40Co - 22Cr - 22Ni - 14.5W - 0.07LaSolution Heat Treated(Composition similar to UNS R30188)1. SCOPE:1.1 Form: This specification covers a corrosion and heat-resistant cobalt alloy in the form of bars, forgings, flash welded rings,
2、and stock for forging or flash welded rings.1.2 Application: These products have been used typically 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 followin
3、g 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 revision of a document unless a specific document issue is specified. When the referenced document has been cancelled and no superseding do
4、cument has been specified, the last published issue of that document shall apply.2.1 SAE Publications: Available from SAE, 400 Commonwealth Drive, Warrendale, PA 15096-0001 or www.sae.org.AMS 2261 Tolerances, Nickel, Nickel Alloy, and Cobalt Alloy Bars, Rods, and WireAMS 2269 Chemical Check Analysis
5、 Limits, Nickel, Nickel Alloys, and Cobalt AlloysAMS 2371 Quality Assurance Sampling and Testing, Corrosion and Heat-Resistant Steels and Alloys, Wrought Products and Forging StockAMS 2374 Quality Assurance Sampling and Testing, Corrosion and Heat-Resistant Steel and Alloy ForgingsAEROSPACE MATERIAL
6、 SPECIFICATIONAMS 5772DIssued 1971-05Revised 2004-01Superseding AMS 5772CReaffirmed 2009-06SAE 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 applicabilit
7、y and suitability for any particular use, including any patent infringement arising therefrom, 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 suggest
8、ions. Copyright 2009 SAE International All rights reserved. No part of this publication 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
9、DOCUMENT ORDER: Tel: 877-606-7323 (inside USA and Canada) Tel: 724-776-4970 (outside USA) Fax: 724-776-0790 Email: CustomerServicesae.org SAE WEB ADDRESS: http:/www.sae.org SAE values your input. To provide feedbackon this Technical Report, please visit http:/www.sae.org/technical/standards/AMS5772D
10、 Copyright SAE International Provided by IHS under license with SAENot for ResaleNo reproduction or networking permitted without license from IHS-,-,-AMS 5772D SAE AMS 5772D- 2 -2.1 (Continued):AMS 2750 PyrometryAMS 2806 Identification, Bars, Wire, Mechanical Tubing, and Extrusions, Carbon and Alloy
11、 Steels and Corrosion and Heat-Resistant Steels and AlloysAMS 2808 Identification, ForgingsAMS 7490 Rings, Flash Welded, Corrosion and Heat-Resistant Austenitic Steels and Austenitic-Type Alloys, or Precipitation-Hardenable Alloys2.2 ASTM Publications: Available from ASTM, 100 Barr Harbor Drive, Wes
12、t Conshohocken, PA 19428-2959 or www.astm.org.ASTM E 8 Tension Testing of Metallic MaterialsASTM E 8M Tension Testing of Metallic Materials (Metric)ASTM E 10 Brinell Hardness of Metallic MaterialsASTM E 139 Creep, Creep-Rupture, and Stress-Rupture Tests of Metallic MaterialsASTM E 354 Chemical Analy
13、sis of High-Temperature, Electrical, Magnetic, and Other Similar Iron, Nickel, and Cobalt Alloys3. TECHNICAL REQUIREMENTS: 3.1 Composition: 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
14、 other analytical methods acceptable to purchaser.3.1.1 Check Analysis: Composition variations shall meet the applicable requirements of AMS 2269.TABLE 1 - CompositionElement min maxCarbon 0.05 0.15Manganese - 1.25Silicon 0.20 0.50Phosphorus - 0.020Sulfur - 0.015Chromium 20.00 24.00Nickel 20.00 24.0
15、0Tungsten 13.00 16.00Lanthanum 0.02 0.12Boron - 0.015Iron - 3.00Cobalt remainderCopyright SAE International Provided by IHS under license with SAENot for ResaleNo reproduction or networking permitted without license from IHS-,-,-AMS 5772D SAE AMS 5772D- 3 -3.2 Condition: The product shall be supplie
16、d in the following condition:3.2.1 Bars: Hot finished and solution heat treated; round bars shall be ground or turned.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 welded ring manufacturer.3.2.2.1 Flash weld
17、ed rings shall not be supplied unless specified or permitted on purchasers part drawing. When supplied, rings shall be manufactured in accordance with AMS 7490.3.2.3 Stock for Forging or Flash Welded Rings: As ordered by the forging or flash welded ring manufacturer.3.3 Solution Heat Treatment: Bars
18、, forgings, and flash welded rings shall be solution heat treated by heating to 2150 F 25 (1177 C 14), holding at heat for a time commensurate with cross-sectional thickness, and cooling at a rate which will produce product meeting the requirements of 3.4.1.1, 3.4.1.2, and 3.4.1.3. Pyrometry shall b
19、e in accordance with AMS 2750.3.3.1 Any thermal treatment following solution heat treatment as in 3.3 shall not involve use of temperatures higher than 2050 F 25 (1121 C 14).3.4 Properties: The product shall conform to the following requirements:3.4.1 Bars, Forgings, and Flash Welded Rings: 3.4.1.1
20、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 vendor, shall have the properties shown in Table 2, determined in accordance with ASTM E
21、 8 or ASTM E 8M.3.4.1.2 Hardness: Shall be as follows, determined in accordance with ASTM E 10:3.4.1.2.1 Bars: Not higher than 302 HB, or equivalent (See 8.2), determined approximately midway between center and surface.TABLE 2 - Minimum Tensile PropertiesProperty ValueTensile Strength 125 ksi (862 M
22、Pa) Yield Strength at 0.2% Offset 55 ksi (379 MPa)Elongation in 4D 45%Copyright SAE International Provided by IHS under license with SAENot for ResaleNo reproduction or networking permitted without license from IHS-,-,-AMS 5772D SAE AMS 5772D- 4 -3.4.1.2.2 Forgings and Flash Welded Rings: Not higher
23、 than 293 HB, or equivalent (See 8.2).3.4.1.3 Stress-Rupture Properties at 1700 F (927 C): A tensile specimen, maintained at 1700 F 3 (927 C 2) 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 ri
24、ngs and of 12.0 ksi (83 MPa) or higher is similarly applied to specimens from forgings, 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 not less than 15% in 4D. Test shall be cond
25、ucted in accordance with ASTM E 139.3.4.1.3.1 The test of 3.4.1.3 may be conducted using incremental 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 t
26、he 23 hours and at intervals of 8 to 16 hours thereafter, the stress shall be increased in 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 Met
27、al converted to oxide scale plus any continuous intergranular oxidation shall not exceed 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 at
28、tack, unless such attack can be attributed to contact with ceramic supports, shall be considered 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, sp
29、ecimens taken from the heat treated coupon shall conform to the requirements of 3.4.1.1, 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 equivalen
30、t to tests of a forged coupon.3.4.3 Stock for Flash Welded Rings: Specimens taken from 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 c
31、ondition, sound, and free from foreign materials and from imperfections detrimental to 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.3.6 Tolerance
32、s: Bars shall conform to all applicable requirements of AMS 2261.Copyright SAE International Provided by IHS under license with SAENot for ResaleNo reproduction or networking permitted without license from IHS-,-,-AMS 5772D SAE AMS 5772D- 5 -4. QUALITY ASSURANCE PROVISIONS: 4.1 Responsibility for In
33、spection: The vendor of the product 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 product conforms to specified requirem
34、ents.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 shall be performed on each heat or lot as applicable.4.2.2 Periodic Tests: T
35、ests 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 selected by the vendor unless frequency of testing is specified by purchaser
36、.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 AMS 2371.4.3.2 Forgings: In accordance with AMS 2374.4.4 Test Methods: 4.4.1 Oxidation Resistance: 4.4.1.1 Specimen Preparation: Specimens shall have surface
37、 area not less than 1.5 square inches (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 inch ( 0.008 mm). Specimens shall be degreased.4.4.1.2 Testing: S
38、pecimens 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, and cooling in air to 300 F (149 C) or lower between each cycle for a total of 100 hours 4 at heat. Specimens may be
39、 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 flow is such that the required surface areas are equally exposed to the flow
40、ing air and temperature.Copyright SAE International Provided by IHS under license with SAENot for ResaleNo reproduction or networking permitted without license from IHS-,-,-AMS 5772D SAE AMS 5772D- 6 -4.4.1.3 Examination: Test specimens shall be cross sectioned and examined metallographically in the
41、 as-polished condition at not lower than 500X magnification. Not 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 vendor of the product shall furnish with each shipment a r
42、eport showing 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 PropertiesHardnessStress-rupture propertiesOxidation resistance.4.5.3 A statement that the product conforms to the other techni
43、cal requirements.4.5.4 Purchase order numberHeat and lot numbersAMS 5772DSizeQuantity.4.5.5 If forgings are supplied, the size and melt source of stock used to make the forgings.4.6 Resampling and Retesting: Shall be as follows:4.6.1 Bars, Flash Welded Rings, and Stock for Forging or Flash Welded Ri
44、ngs: In accordance with AMS 2371.4.6.2 Forgings: In accordance with AMS 2374.5. 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% of any shipm
45、ent shall be supplied in lengths shorter than 10 feet (3 m).Copyright SAE International Provided by IHS under license with SAENot for ResaleNo reproduction or networking permitted without license from IHS-,-,-AMS 5772D SAE AMS 5772D- 7 -5.2 Identification: Shall be as follows:5.2.1 Bars: In accordan
46、ce with AMS 2806.5.2.2 Forgings: In accordance with AMS 2808.5.2.3 Flash Welded Rings and Stock for Forging or Flash Welded Rings: 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
47、 rules and regulations pertaining to the handling, 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.7. REJEC
48、TIONS: 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 margin is for the convenience of the user in locating areas where technical revisions, not editorial changes, have been ma
49、de 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. Change bars and (R) are not used in original publications, nor in specifications that contain editorial changes only.8.2 Hardness conversion tables for metals are presented in ASTM E
