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 2015 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/AMS5922BAEROSPACEMATERIAL SPECIFICATIONAMS5922 REV. BIssued 2008-01Revised 2015-12Superseding
5、 AMS5922ASteel, Corrosion-Resistant, Bars, and Forgings 10Cr - 5.5Ni - 14Co - 2Mo - 1W (0.19-0.23C)Vacuum Induction Melted, Vacuum Arc Remelted, Normalized, Annealed(Composition similar to UNS S10500)RATIONALEAMS5922B revises heat treatment (3.4) macrostructure (3.5.1), Micro-inclusion rating (3.5.2
6、), response to heat treatment(3.5.3), average grain size (3.5.3.4), and Reports (4.4), and is a Five Year Review and update of this specification.1. SCOPE1.1 FormThis specification covers a corrosion-resistant, premium aircraft-quality alloy steel in the form of bars, forgings, and stock for forging
7、.1.2 ApplicationThese products have been used typically for heat treated parts requiring a combination of high strength, good toughness, weldability, and stress corrosion resistance, but usage is not limited to such applications. Product after heat treatment should attain a minimum tensile strength
8、of 280 ksi (1931 MPa).2. APPLICABLE DOCUMENTSThe 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 revision of a document unless a specific document issue is specified.
9、 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 PublicationsAvailable from SAE International, 400 Commonwealth Drive, Warrendale, PA 15096-0001, Tel: 877-606-7323 (inside USA and Canada) or
10、 +1 724-776-4970 (outside USA), www.sae.org.AMS2241 Tolerances, Corrosion and Heat-Resistant Steel, Iron Alloy, Titanium, and Titanium Alloy Bars and WireAMS2248 Chemical Check Analysis Limits, Corrosion and Heat-Resistant Steels and Alloys, Maraging and Other Highly-Alloyed Steels, and Iron AlloysA
11、MS2300 Steel Cleanliness, Premium Aircraft-Quality Magnetic Particle Inspection ProcedureSAE INTERNATIONAL AMS5922B Page 2 of 7AMS2315 Determination of Delta Ferrite ContentAMS2371 Quality Assurance Sampling and Testing, Corrosion and Heat-Resistant Steels and Alloys, Wrought Products and Forging St
12、ockAMS2374 Quality Assurance Sampling and Testing, Corrosion and Heat-Resistant Steel and Alloy ForgingsAMS2750 PyrometryAMS2806 Identification Bars, Wire, Mechanical Tubing, and Extrusions, Carbon and Alloy Steels and Corrosion and Heat-Resistant Steels and AlloysAMS2808 Identification ForgingsAS11
13、82 Standard Stock Removal Allowance Aircraft-Quality and Premium Aircraft-Quality Steel Bars and Mechanical Tubing2.2 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 A370 Definitions for
14、Mechanical Testing of Steel ProductsASTM A604 Macroetch Testing of Consumable Electrode Remelted Steel Bars and BilletsASTM E45 Determining the Inclusion Content of SteelASTM E353 Chemical Analysis of Stainless, Heat-Resisting, Maraging, and Other Similar Chromium-Nickel-Iron AlloysASTM E399 Plane-S
15、train Fracture Toughness of Metallic MaterialsASTM E1181 Characterizing Duplex Grain Sizes3. TECHNICAL REQUIREMENTS3.1 CompositionShall conform to the percentages by weight shown in Table 1, determined by wet chemical methods in accordance with ASTM E353, by spectrochemical methods, or by other anal
16、ytical methods acceptable to purchaser.Table 1 - CompositionElement min maxCarbon 0.19 0.23Manganese - 0.10Silicon - 0.10Phosphorus - 0.008Sulfur - 0.005Chromium 9.50 10.50Nickel 5.20 5.80Cobalt 13.50 14.50Molybdenum 1.80 2.20Tungsten 0.80 1.20Titanium - 0.015Aluminum - 0.01Vanadium 0.25 0.35Oxygen
17、- 0.0020 (20 ppm)Nitrogen - 0.0015 (15 ppm)SAE INTERNATIONAL AMS5922B Page 3 of 73.1.1 Check AnalysisComposition variations shall meet the applicable requirements of AMS2248. No variation is permitted for oxygen and nitrogen.3.2 Melting PracticeSteel shall be multiple melted using vacuum induction m
18、elting followed by vacuum arc remelting.3.3 ConditionThe product shall be supplied in the following condition; hardness shall be determined in accordance with ASTM A370:3.3.1 Bars and ForgingsNormalized and annealed having hardness not higher than 372 HB, or equivalent (see 8.2), and descaled.3.3.2
19、Stock for ForgingAs ordered by the forging manufacturer.3.4 Heat TreatmentBars and forgings shall be normalized by heating to 1976 F 36 F (1080 C 20 C), holding at the selected temperature for a time commensurate with section thickness, 60 minutes minimum, cooling in air to room temperature, cooling
20、 to -100 F (-73 C) or lower, holding at temperature for a minimum of 60 minutes, and air warming to room temperature, and annealed by heating to 1256 F 25 F (680 C 14 C), holding at temperature for 8 hours +2 hours, -0.5 hour, and cooling in air.Pyrometry shall be in accordance with AMS2750.3.5 Prop
21、ertiesThe product shall conform to the following requirements; tensile and hardness testing shall be performed in accordance with ASTM A370:3.5.1 MacrostructureVisual examination of transverse full cross-sections from bars, billets, and stock for forging, flash welded rings, or extrusions, etched in
22、 hot hydrochloric acid in accordance with ASTM A604, shall show no pipe or cracks. Porosity, segregation, inclusions, and other imperfections shall be no worse than the macrographs of ASTM A604 shown in Table 2.Table 2 - Macrostructure limitsClass Condition Severity1Freckles A2 White Spots A3 Radial
23、 Segregation B4 Ring Pattern B3.5.2 Micro-Inclusion RatingNo specimen shall exceed the limits shown in Table 3, determined in accordance with ASTM E45, Method D.SAE INTERNATIONAL AMS5922B Page 4 of 7Table 3 Micro-inclusion rating limitsAThinAHeavyBThinBHeavyCThinCHeavyDThinDHeavyWorst Field Severity
24、 1.5 1.0 1.5 1.0 1.5 1.0 1.5 1.0Worst Field Frequency, maximum (a) 1 (a) 1 (a) 1 3 1Total Rateable Fields, Frequency, maximum (b) 1 (b) 1 (b) 1 8 1(a) Combined A+B+C; not more than 3 fields(b) Combined A+B+C; not more than 8 fields3.5.2.1 A rateable field is defined as one which has a type A, B, C,
25、or D inclusion rating of at least No. 1.0 thin or heavy.3.5.3 Response to Heat TreatmentTest specimens, extracted from product shall conform to the following requirements after being hardened by heating to 1985 qF r 27 qF (1085 qC r 15 qC), holding at heat for 60 minutes +10 minutes, -0 minutes, que
26、nching in oil (or equivalent), cooling to -100 qF (-73 qC) or lower, holding at temperature for 1 hour +2 hours, -0 hours, and warming in air to room temperature; and double tempered by heating to 934 qF r 12 qF (501 qC r 7 qC), holding at heat for 3 hours r 0.5 hour,quenching in oil (or equivalent)
27、, cooling to -100 qF (-73 qC) or lower, holding at temperature for 1 hour +2 hours, -0 hours,and warming in air to room temperature, reheating to 900 qF r 18 qF (482 qC r 10 qC), holding at heat for 12 hours +2 hours,-1 hour, and cooling in air (or equivalent).3.5.3.1 Tensile PropertiesLongitudinal
28、and transverse tensile properties shall be as shown in Table 4. Testing in the longitudinal direction need not be performed on product qualified by testing in the transverse direction.Table 4 - Minimum tensile propertiesProperty ValueTensile Strength 280 ksi (1931 MPa)Yield Strength at 0.2% Offset 2
29、13 ksi (1468 MPa)Elongation in 4D 11%Reduction of Area 44%3.5.3.2 HardnessShall be not lower than 53 HRC, or equivalent (see 8.2).3.5.3.3 Fracture ToughnessShall be not lower than 50 ksi inch (55 MPa m ) KIC, determined in accordance with ASTM E399 on specimens in the longitudinal LS or LR orientati
30、on from product over 3.00 inches (76.2 mm) and over in nominal section thickness. If product size precludes use of specimens which will provide valid KIC results, a KQ value not lower than 50 ksi inch (55 MPa m )will be acceptable. Invalid test results in accordance with ASTM E399 shall be considere
31、d meaningful and the material shall be accepted to KIC requirements if the calculated KQ equals or exceeds the required KIC and the invalidity is due to Pmax/Pq1.10.3.5.3.4 Average Grain SizeShall be ASTM No. 4 or finer, range ASTM No. 12 to ASTM No. 1, for product 50 in2(232 cm2) and under in cross
32、-sectional area, determined in accordance with ASTM E1181, Duplex, Wide-range. The sample shall have been heat treated in accordance with 3.5.3.SAE INTERNATIONAL AMS5922B Page 5 of 73.5.4 Forging StockWhen a sample of stock is forged to a test coupon acceptable to purchaser and heat treated as in 3.
33、4 and 3.5.3, specimens taken from the heat treated coupon shall conform to the requirements of 3.5.3.1, 3.5.3.2, 3.5.3.3, and 3.5.3.4. If specimens taken from the stock after heat treatment as in 3.4 and 3.5 conform to the requirements of 3.5.3.1, 3.5.3.2, 3.5.3.3, and 3.5.3.4, the tests shall be ac
34、cepted as equivalent to tests of a forged coupon.3.6 QualityThe product, as received by purchaser, shall be uniform in quality and condition, sound, and free from foreign materials and from imperfections detrimental to usage of the product.3.6.1 Steel shall be premium aircraft-quality conforming to
35、AMS2300.3.6.2 Bars ordered hot rolled, or ground, turned, or polished shall, after removal of the standard machining allowance in accordance with AS1182, be free of seams, laps, tears, and cracks open to the ground, turned or polished surface.3.6.3 Grain flow of die forgings, except in areas which c
36、ontain flash-line end grain, shall follow the general contour of the forgings showing no evidence of reentrant grain flow.3.7 TolerancesBars and wire shall conform to all applicable requirements of AMS2241.4. QUALITY ASSURANCE PROVISIONS4.1 Responsibility for InspectionThe producer of the product sh
37、all 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 testing deemed necessary to ensure that the product conforms to specified requirements.4.2 Classification of Tests4.2.
38、1 Acceptance TestsThe following requirements are acceptance tests and shall be performed on each heat or lot as applicable:4.2.1.1 Composition (3.1), macrostructure rating (3.5.1), and micro-inclusion rating (3.5.2) of each heat.4.2.1.2 Tensile properties (3.5.3.1) and hardness (3.5.3.2) of each lot
39、 of bars and forgings after heat treatment.4.2.1.3 Tolerances (3.7) of bars and wire.4.2.2 Periodic TestsThe following requirements are periodic tests and shall be performed at a frequency selected by the producer unless frequency of testing is specified by purchaser.4.2.2.1 Average grain size (3.5.
40、3.4) of bars and forgings after heat treatment.4.2.2.2 Fracture toughness (3.5.3.3) of bars and forgings after heat treatment.4.2.2.3 Ability of forging stock (3.5.4) to develop required properties.4.2.2.4 Frequency-severity cleanliness rating (3.6.1).4.2.2.5 Grain flow of die forgings (3.6.3).SAE I
41、NTERNATIONAL AMS5922B Page 6 of 74.3 Sampling and Testing4.3.1 Bars and Stock for ForgingIn accordance with AMS2371.4.3.2 ForgingsIn accordance with AMS2374.4.4 Reports4.4.1 The producer of bars and forgings shall furnish with each shipment a report showing the producers name and country where the m
42、etal was melted (e.g., final melt in the case of metal processed by multiple melting operations) and showing the results of tests for composition and annealed hardness of each heat, and for tensile properties and hardness of each lot after heat treatment, and stating that the product conforms to the
43、 other technical requirements. This report shall include the purchase order number, heat and lot numbers, AMS5922B, size, and quantity. If forgings are supplied, the size and melt source of stock used to make the forgings shall also be included.4.4.2 The producer of forging stock shall furnish with
44、each shipment a report showing the producers name and country where the metal was melted (e.g., final melt in the case of metal processed by multiple melting operations) and the results of tests for chemistry, macrostructure, and micro-inclusion rating of each heat. This report shall include the pur
45、chase order number, heat number, AMS5922B, size and quantity. 4.5 Resampling and Retesting4.5.1 Bars and Stock for ForgingIn accordance with AMS2371.4.5.2 ForgingsIn accordance with AMS2374.5. PREPARATION FOR DELIVERY5.1 SizesExcept when exact lengths or multiples of exact lengths are ordered, strai
46、ght bars and wire will be acceptable in mill lengthsof 6 to 20 feet (1.8 to 6.1 m) but not more than 10% of any shipment shall be supplied in lengths shorter than 10 feet (3 m).5.2 Identification5.2.1 BarsIn accordance with AMS2806.5.2.2 ForgingsIn accordance with AMS2808.5.2.3 Stock for ForgingAs a
47、greed upon by purchaser and producer.SAE INTERNATIONAL AMS5922B Page 7 of 75.3 PackagingThe 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 t
48、o ensure carrier acceptance and safe delivery.6. ACKNOWLEDGMENTA producer shall mention this specification number and its revision letter in all quotations and when acknowledging purchase orders.7. REJECTIONSProduct not conforming to this specification, or to modifications authorized by purchaser, w
49、ill be subject to rejection.8. NOTES8.1 Revision IndicatorA 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. Chang
