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/AMS5950CAEROSPACE MATERIAL SPECIFICATIONAMS5950 REV. CIssued 1996-01Revised 2014-06Supersedin
5、g AMS5950BNickel Alloy, Corrosion and Heat-Resistant, Sheet and Strip52.5Ni - 19Cr - 3.0Mo - 5.0Cb - 0.90Ti - 0.50Al - 18FeVacuum Induction and Consumable Electrode MeltedSolution Heat Treated, Precipitation Hardenable(Composition similar to UNS N07719)RATIONALEAMS5950C revises Properties (3.5), Rep
6、orts (4.4, 4.4.3) and is a Five Year Review and update of this specification.1. SCOPE1.1 FormThis specification covers a corrosion and heat-resistant nickel alloy in the form of sheet and strip 0.080 inch (2.03 mm) and under in nominal thickness (See 8.6).1.2 ApplicationThese products have been used
7、 typically for parts requiring resistance to low-cycle fatigue, creep and stress-rupture up to 1300 F (704 C), and oxidation resistance up to 1800 F (982 C), particularly those parts which are superplastically or otherwise formed or welded and then heat treated to develop desired properties, but usa
8、ge is not limited to such applications.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 is
9、sue 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 PublicationsAvailable from SAE International, 400 Commonwealth Drive, Warrendale, PA 15096-0001, Tel: 877-606-7323 (inside U
10、SA and Canada) or 724-776-4970 (outside USA), www.sae.org.AMS2262 Tolerances, Nickel, Nickel Alloy, and Cobalt Alloy Sheet, Strip, and PlateAMS2269 Chemical Check Analysis Limits, Nickel, Nickel Alloys, and Cobalt AlloysSAE INTERNATIONAL AMS5950C Page 2 of 8AMS2371 Quality Assurance Sampling and Tes
11、ting, Corrosion and Heat-Resistant Steels and Alloys, Wrought Products and Forging StockAMS2807 Identification, Carbon and Low-Alloy Steels, Corrosion and Heat-Resistant Steels and Alloys, Sheet, Strip, Plate, and Aircraft TubingAS4194 Sheet and Strip Surface Finish Nomenclature2.2 ASTM Publications
12、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 A 480/A 480M Flat-Rolled Stainless and Heat-Resisting Steel Plate, Sheet, and StripASTM E 3 Preparation of Metallographic SpecimensASTM E 8/E 8M Tension Tes
13、ting of Metallic MaterialsASTM E 18 Rockwell Hardness of Metallic MaterialsASTM E 21 Elevated Temperature Tension Tests of Metallic MaterialsASTM E 112 Determining Average Grain SizeASTM E 139 Conducting Creep, Creep-Rupture, and Stress-Rupture Tests of Metallic MaterialsASTM E 290 Bend Test of Mate
14、rials for DuctilityASTM E 354 Chemical Analysis of High-Temperature, Electrical, Magnetic, and Other Similar Iron, Nickel, and Cobalt AlloysASTM E 384 Knoop and Vickers Hardness of Materials3. TECHNICAL REQUIREMENTS3.1 CompositionShall conform to the percentages by weight shown in Table 1, determine
15、d by wet chemical methods in accordance with ASTM E 354, by spectrochemical methods, or by other analytical methods acceptable to purchaser.SAE INTERNATIONAL AMS5950C Page 3 of 8TABLE 1 - COMPOSITIONElement min maxCarbon - 0.05Manganese - 0.35Silicon - 0.35Phosphorus - 0.015Sulfur - 0.002Chromium 17
16、.00 21.00Nickel 50.00 55.00Molybdenum 2.80 3.30Columbium 4.75 5.25Titanium 0.65 1.15Aluminum 0.20 0.80Cobalt - 1.00Boron - 0.006Copper - 0.30Nitrogen - 0.01Iron remainder3.1.1 Check AnalysisComposition variations shall meet the applicable requirements of AMS2269.3.2 Melting PracticeAlloy shall be mu
17、ltiple melted using vacuum induction melting followed by consumable electrode remelting.3.3 ConditionCold 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 commer
18、cial corrosion-resistant steel finishes as described in ASTM A 480, A 480M, AS4194 and 3.3.1 or 3.3.2 as applicable, except that product 0.010 inch (0.25 mm) and under in nominal thickness shall have surface appearance comparable to a 2B finish.3.3.1 Sheet No. 2D finish.3.3.2 StripNo. 1 strip finish
19、.3.4 Solution Heat TreatmentNo specific heat treating instructions are specified but it is recommended that the product be solution heat treated by heating in a suitable protective atmosphere, preferably in hydrogen or argon or in a vacuum at 10-4Torr or less (See 8.2), to a temperature within the r
20、ange 1700 to 1825 F (927 to 996 C), holding at the selected temperature within 25 F (14 C) for a time commensurate with product thickness, and cooling at a rate equivalent to an air cool or faster.3.5 PropertiesProduct 0.080 inch (2.03 mm) and under in nominal thickness shall conform to the followin
21、g requirements. Property requirements for product greater than 0.080 inch (2.03mm) shall be agreed upon between purchaser and producer.3.5.1 As Solution Heat Treated3.5.1.1 Tensile PropertiesShall be as shown in Table 2, determined in accordance with ASTM E 8/E 8M.SAE INTERNATIONAL AMS5950C Page 4 o
22、f 8TABLE 2A - TENSILE PROPERTIES, INCH/POUND UNITSNominal ThicknessInchTensileStrengthksi, maxYield Strengthat 0.2% Offsetksi, maxElongation in2 Inches%, minUp to 0.010, incl 185 155 reportOver 0.010 to 0.080, incl 185 155 20TABLE 2B - TENSILE PROPERTIES, SI UNITSNominal ThicknessMillimetersTensileS
23、trengthMPa, maxYield Strengthat 0.2% OffsetMPa, maxElongation in50.8 mm%, minUp to 0.25, incl 1276 1069 reportOver 0.25 to 2.03, incl 1276 1069 203.5.1.2 HardnessShall be not higher than 34 HRC, or equivalent (See 8.3), determined in accordance with ASTM E 18; for thin gages where superficial hardne
24、ss testing is impractical, microhardness testing in accordance with ASTM E 384 may be used. 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 from anoth
25、er sample with similar nonconforming hardness.3.5.1.3 BendingProduct shall be tested in accordance with ASTM E 290 using a sample prepared nominally 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 through an
26、 angle of 180 degrees around a diameter equal to three times the nominal thickness of the product. In case of dispute, the results of tests using the guided bend test of ASTM E 290 shall govern.3.5.1.4 Average Grain Size Shall be ASTM No. 10 or finer, determined in accordance with ASTM E 112.3.5.1.5
27、 Surface MicrostructureMetallographic examination on an unetched and an etched specimen cross-section of product 0.080 inch (2.03 mm) and under in nominal thickness, shall disclose no alloy depleted surface layer (See 8.4.1), intergranular attack, or other detrimental surface conditions greater than
28、 0.0005 inch (0.013 mm) for product 0.060 inch (1.52 mm) and under in nominal thickness, or greater than 0.001 inch (0.025 mm) for product over 0.060 to 0.080 inch (1.52 to 2.03 mm) in nominal thickness. Each specimen shall be prepared according to ASTM E 3 and evaluated at 500X magnification.3.5.2
29、After Precipitation Heat TreatmentThe product shall have the following properties after being precipitation heat treated by heating to 1325 F 15 (718 C 8), holding at heat for 8 hours 0.5, cooling at 100 F 15 (56 C 8) degrees per hour to 1150 F 15 (621 C 8), holding at 1150 F 15 (621 C 8) for 8 hour
30、s 0.5, and cooling in air. Instead of the 100 F 15 (56 C 8) degrees per hour cooling rate to 1150 F 15 (621 C 8), product may be furnace cooled at any rate provided the time at 1150 F 15 (621 C 8) is adjusted to give a total precipitation heat treatment time of 18 hours. The product shall also meet
31、the requirements of 3.5.2.1, 3.5.2.2, and 3.5.2.3 after being re-solution heat treated by heating to 1750 F 25 (954 C 14), holding at heat for 60 minutes 5, and cooling at a rate equivalent to an air cool or faster and precipitation heat treated as above.3.5.2.1 Tensile Properties3.5.2.1.1 At Room T
32、emperatureShall be as shown in Table 3, determined in accordance with ASTM E 8/E 8M.SAE INTERNATIONAL AMS5950C Page 5 of 8TABLE 3A - MINIMUM ROOM TEMPERATURE TENSILE PROPERTIES, INCH/POUND UNITSNominal ThicknessInchTensileStrengthksiYield Strengthat 0.2% OffsetksiElongation in2 Inches%Up to 0.010, i
33、ncl 180 148 reportOver 0.010 to 0.080, incl 180 148 12TABLE 3B - MINIMUM ROOM TEMPERATURE TENSILE PROPERTIES, SI UNITSNominal ThicknessMillimetersTensileStrengthMPaYield Strengthat 0.2% OffsetMPaElongation in50.8 mm%Up to 0.25, incl 1241 1020 reportOver 0.25 to 2.03, incl 1241 1020 123.5.2.1.2 At 12
34、00 F (649 C)Shall be as shown in Table 4, determined in accordance with ASTM E 21 on specimens heated to 1200 F 5 (649 C 3), held at heat for not less than 20 minutes before testing, and tested at 1200 F 5 (649 C 3).TABLE 4A - MINIMUM 1200 F (649 C) TENSILE PROPERTIES, INCH/POUND UNITSNominal Thickn
35、essInchTensileStrengthksiYield Strengthat 0.2% OffsetksiElongation in2 Inches%Up to 0.025, incl 140 115 5Over 0.025 to 0.080, incl 145 120 5TABLE 4B - MINIMUM 1200F (649 C) TENSILE PROPERTIES, SI UNITSNominal ThicknessMillimetersTensileStrengthMPaYield Strengthat 0.2% OffsetMPaElongation in50.8 mm%U
36、p to 0.64, incl 965 793 5Over 0.64 to 2.03, incl 1000 827 53.5.2.1.2.1 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 report of 4.4 shall indicate th
37、e thickness at which the elevated temperature tensile test was performed.3.5.2.2 HardnessShall be not lower than 36 HRC, or equivalent (See 8.3), determined in accordance with ASTM E 18; for thin gages where superficial hardness testing is impractical, microhardness testing in accordance with ASTM E
38、 384 may be used. Product shall not be rejected on the basis of hardness if the tensile properties of 3.5.2.1.1 are acceptable, determined on specimens taken from the same sample as that with nonconforming hardness or from another sample with similar nonconforming hardness.3.5.2.3 Stress-Rupture Pro
39、perties at 1200 F (649 C)A tensile specimen, maintained at 1200 F 3 (649 C 2) while a load sufficient to produce the initial axial stress specified in Table 5 or higher stress is applied continuously, shall not rupture in less than 23 hours. The test shall be continued to rupture without change of l
40、oad. Elongation after rupture, measured at room temperature, shall be not lessthan shown in Table 5. Tests shall be conducted in accordance with ASTM E 139.SAE INTERNATIONAL AMS5950C Page 6 of 8TABLE 5A - STRESS-RUPTURE PROPERTIES, INCH/POUND UNITSNominal ODInchInitial AxialStress, ksiElongation% in
41、 2 InchesUp to 0.015, incl 95.0 -Over 0.015 to 0.025, incl 95.0 4Over 0.025 to 0.080, incl 100 4TABLE 5B - STRESS-RUPTURE PROPERTIES, SI UNITSNominal ODMillimetersInitial AxialStress, MPaElongation% in 50.8 mmUp to 0.38, incl 655 -Over 0.38 to 0.64, incl 655 4Over 0.64 to 2.03, incl 689 43.5.2.3.1 F
42、or product 0.010 inch (0.25 mm) and under in nominal thickness, stress-rupture 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 report of 4.4 shall indicate the thickness at which the stress-rupture test was performe
43、d.3.5.2.3.2 The test of 3.5.2.3 may be conducted using incremental loading. In such case, the load required to produce the 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, mini
44、mum, thereafter, the stress shall be increased in increments of 5.0 ksi (34 MPa). Time to rupture and elongation requirements shall be as specified in 3.5.2.3.3.6 QualityThe product, as received by purchaser, shall be uniform in quality and condition, sound, and free from foreign materials and from
45、imperfections detrimental to usage of the product.3.7 TolerancesShall conform to all applicable requirements of AMS2262 .4. QUALITY ASSURANCE PROVISIONS4.1 Responsibility for InspectionThe vendor of the product shall supply all samples for vendors tests and shall be responsible for the performance o
46、f 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 Tests4.2.1 Acceptance TestsThe following requirements are acceptance tests and shall be performed
47、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), bending (3.5.1.3), average grain size (3.5.1.4), and microstructure (3.5.1.5) of each lot as solution heat treated.4.2.1.3 Room temperature tensile properties (3.5.2.1.1
48、) and hardness (3.5.2.2) of each lot after precipitation heat treatment.4.2.1.4 Tolerances (3.7) of each lot.SAE INTERNATIONAL AMS5950C Page 7 of 84.2.2 Periodic TestsThe following requirements are periodic tests and shall be performed at a frequency selected by the vendor unless frequency of testin
49、g is specified by purchaser.4.2.2.1 Tensile properties at 1200 F (649 C) (3.5.2.1.2) and stress-rupture properties (3.5.2.3) after precipitation heat treatment.4.2.2.2 Tensile properties (3.5.2.1.1 and 3.5.2.1.2), hardness (3.5.2.2), and stress-rupture properties (3.5.2.3) after re-solution and precipitation heat treatment as in 3.5.2.4.3 Sampl
