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 2017 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:/standards.sae.org/AMS4917J AEROSPACE MATERIAL SPECIFICATION AMS4917 REV. J Issued 1963-01 Revised 2017-06 Superse
5、ding AMS4917H Titanium Alloy Sheet, Strip, and Plate 13.5V - 11Cr - 3.0Al Solution Heat Treated (Composition similar to UNS R58010) RATIONALE AMS4917J results from a Five-Year Review and update of this specification that includes the addition of ASTM E2994 (3.1), removal of sample size allowance for
6、 hydrogen of Table 1 (covered by ASTM E1447), requires agreement on mechanical property values for material outside specification ranges (3.5.3), recognizes that stricter ultrasonic testing meets specification requirement (3.6.2, 8.5), the addition of AS6279 (3.8), and revises reporting (4.4) and re
7、sampling (4.5). 1. SCOPE 1.1 Form This specification covers a titanium alloy in the form of sheet, strip, and plate through 4.000 inches (101.6 mm) nominal thickness. 1.2 Application This material has been used typically for parts to be formed in the solution heat treated condition and subsequently
8、precipitation heat treated, requiring high strength-to-weight ratio and stability up to 550 F (288 C) in the precipitation heat treated condition, but usage is not limited to such applications. 1.2.1 This alloy may have poor crack propagation resistance in the precipitation heat treated condition. 1
9、.2.2 Certain processing procedures and service conditions may cause these products to become subject to stress-corrosion cracking; ARP982 recommends practices to minimize such conditions. 2. APPLICABLE DOCUMENTS The issue of the following documents in effect on the date of the purchase order forms a
10、 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 document has been specified, the last published issue of that doc
11、ument shall apply. SAE INTERNATIONAL AMS4917J Page 2 of 8 2.1 SAE Publications 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. AMS2242 Tolerances Corrosion and Heat Resistant
12、 Steel, Iron Alloy, Titanium, and Titanium Alloy Sheet, Strip, and Plate AMS2249 Chemical Check Analysis Limits Titanium and Titanium Alloys AMS2368 Sampling and Testing of Wrought Titanium Raw Material Except Forgings and Forging Stock AMS2631 Ultrasonic Inspection Titanium and Titanium Alloy Bar,
13、Billet and Plate AMS2750 Pyrometry AMS2809 Identification Titanium and Titanium Alloy Wrought Products ARP982 Minimizing Stress-Corrosion Cracking in Wrought Titanium Alloy Products ARP1917 Clarification of Terms Used in Aerospace Metals Specifications AS1814 Terminology for Titanium Microstructures
14、 AS4194 Sheet and Strip Surface Finish Nomenclature AS6279 Standard Practice for Production, Distribution, and Procurement of Metal Stock 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.
15、ASTM A480/A480M General Requirements for Flat-Rolled Stainless and Heat-Resisting Steel Plate, Sheet, and Strip ASTM E8/E8M Tension Testing of Metallic Materials ASTM E18 Rockwell Hardness of Metallic Materials ASTM E290 Bend Testing of Material for Ductility ASTM E384 Microindentation Hardness of M
16、aterials ASTM E1409 Determination of Oxygen and Nitrogen in Titanium and Titanium Alloys by Inert Gas Fusion ASTM E1447 Determination of Hydrogen in Titanium and Titanium Alloys by the Inert Gas Fusion Thermal Conductivity/Infrared Detection Method ASTM E1941 Determination of Carbon in Refractory an
17、d Reactive Metals and Their Alloys by Combustion Analysis ASTM E2371 Analysis of Titanium and Titanium Alloys by Direct Current Plasma and Inductively Coupled Plasma Atomic Emission Spectrometry ASTM E2994 Analysis of Titanium and Titanium Alloys by Spark Atomic Emission Spectrometry and Glow Discha
18、rge Atomic Emission Spectrometry SAE INTERNATIONAL AMS4917J Page 3 of 8 3. TECHNICAL REQUIREMENTS 3.1 Composition Shall conform to the percentages by weight shown in Table 1; carbon shall be determined in accordance with ASTM E1941, hydrogen in accordance with ASTM E1447, oxygen and nitrogen in acco
19、rdance with ASTM E1409, and other elements in accordance with ASTM E2371 or ASTM E2994. Other analytical methods may be used if acceptable to the purchaser. Table 1 - Composition Element Min Max Vanadium 12.5 14.5 Chromium 10.0 12.0 Aluminum 2.5 3.5 Iron - 0.35 Oxygen - 0.17 Carbon - 0.05 Nitrogen -
20、 0.05 (500 ppm) Hydrogen - 0.025 (250 ppm) Other Elements, each (3.1.1) - 0.10 Other Elements, total (3.1.1) - 0.40 Titanium remainder 3.1.1 Determination not required for routine acceptance. 3.1.2 Check Analysis Composition variations shall meet the applicable requirements of AMS2249. 3.2 Melting P
21、ractice Alloy shall be multiple melted. The first melt shall be made by vacuum consumable electrode, nonconsumable electrode, electron beam cold hearth, or plasma arc cold hearth melting practice. The subsequent melt or melts shall be made using vacuum arc remelting (VAR) practice. Alloy additions a
22、re not permitted in the final (VAR) melt. 3.2.1 The atmosphere for non-consumable electrode melting shall be vacuum or shall be argon and/or helium at an absolute pressure not higher than 1000 mm of mercury. 3.2.2 The electrode tip for nonconsumable electrode melting shall be water-cooled copper. 3.
23、3 Condition The product shall be supplied in the following condition: 3.3.1 Sheet and Strip Hot rolled with or without subsequent cold reduction, solution heat treated, descaled, and leveled, having a surface appearance comparable to a commercial corrosion-resistant steel No. 2D finish (see 8.2). 3.
24、3.2 Plate Hot rolled, solution heat treated, pickled (descaled), and flattened having a surface appearance comparable to a commercial corrosion-resistant steel No. 1 finish (see 8.2). Plate product shall be produced using standard industry practices designed strictly for the production of plate stoc
25、k to the procured thickness. Bar, billet, forgings, or forging stock shall not be supplied in lieu of plate. SAE INTERNATIONAL AMS4917J Page 4 of 8 3.4 Heat Treatment The product shall be solution heat treated by heating to a temperature within the range 1400 to 1500 F (760 to 816 C), holding at the
26、 selected temperature within 25 F (14 C) for time commensurate with thickness, and cooling at a rate equivalent to an air cool or faster. Pyrometry shall be in accordance with AMS2750. 3.5 Properties Product shall conform to the following requirements: 3.5.1 As Solution Heat Treated 3.5.1.1 Tensile
27、Properties Shall be as specified in Table 2, determined in accordance with ASTM E8/E8M with the rate of strain set at 0.005 inch/inch/minute (0.005 mm/mm/minute) and maintained within a tolerance of 0.002 inch/inch/minute (0.002 mm/mm/minute) through the 0.2% offset yield strain. Table 2 - Minimum t
28、ensile properties Nominal Thickness Inches (Millimeters) Tensile Strength ksi (MPa) Yield Strength at 0.2% Offset ksi (MPa) Elongation in 2 Inches or 4D % Up to 0.025 (0.64), incl 130 (896) 120 (827) 8 Over 0.025 (0.64) to 4.000 (101.60), incl 130 (896) 120 (827) 10 3.5.1.2 Hardness Shall be not hig
29、her than 36 HRC, or equivalent, determined in accordance with ASTM E18. 3.5.1.3 Bending Product under 0.1875 inch (4.762 mm) in nominal thickness, shall have a test sample prepared nominally 0.750 inch (19.06 mm) in width, with its axis of bending parallel to the direction of rolling. The sample sha
30、ll be bend tested in conformance with the guided bend test defined in ASTM E290 through an angle of 105. The test fixture supports shall have a contact radius 0.010 inch (0.25 mm) minimum, and the plunger shall have a radius equal to the bend factor shown in Table 3 times the nominal thickness. Exam
31、ination of the bent sample shall show no evidence of cracking when examined at 15 to 25X magnification. Table 3 - Bend factors Inch Millimeters Bend Factor Up to 0.070, incl Up to 1.78, incl 3 Over 0.070 to 0.1875, excl Over 1.78 to 4.762, excl 3.5 3.5.1.4 Surface Contamination The product shall be
32、free of any oxygen-rich layer, such as alpha case, or other surface contamination, determined as in any one of the following: 3.5.1.4.1, 3.5.1.4.2, 3.5.1.4.3, or other method acceptable to purchaser. 3.5.1.4.1 The bend test of 3.5.1.3. 3.5.1.4.2 Examination of a metallographic cross section at 400X
33、minimum magnification. 3.5.1.4.3 Hardness difference; a surface hardness more than 40 points higher than the subsurface hardness, determined in accordance with ASTM E384 on the Knoop scale using a 200 g load, being evidence of unacceptable surface contamination. SAE INTERNATIONAL AMS4917J Page 5 of
34、8 3.5.2 Response to Precipitation Heat Treatment Product shall conform to the following requirements after being precipitation heat treated by heating to 900 F 25 F (482 C 14 C), holding at heat for not longer than 72 hours, and cooling in air to room temperature. Precipitation heat treatment shall
35、precede final machining of specimens. 3.5.2.1 Tensile Properties Shall be as shown in Table 4 for product up through 4.000 inches (101.60 mm) determined in accordance with ASTM E8/E8M with the rate of strain set at 0.005 inch/inch/minute (0.005 mm/mm/minute) and maintained within a tolerance of 0.00
36、2 inch/inch/minute (0.002 mm/mm/minute) through the 0.2% offset yield strain. Table 4 - Minimum tensile properties Property Value Tensile Strength 170 ksi (1172 MPa) Yield Strength at 2% Offset 160 ksi (1103 MPa) Elongation in 2 Inches (50.8 mm) or 4D 4% 3.5.3 Mechanical property requirements for pr
37、oduct outside the size range covered by 1.1 shall be agreed upon between purchaser and producer. 3.6 Quality 3.6.1 The product, as received by purchaser, shall be uniform in quality and condition, sound, and free from “oil cans“ (see 8.3.1) of depth in excess of the flatness tolerance, ripples, and
38、foreign materials and from imperfections detrimental to usage of the product. 3.6.2 Plate 0.500 inch (12.70 mm) and over in nominal thickness shall be ultrasonically inspected in accordance with AMS2631 and shall meet Class A1 of that specification. If product passes a more stringent class such as C
39、lass AA, there is no need to re-test or re-certify (see 8.5). 3.7 Tolerances Shall conform to the following: 3.7.1 Thickness, Width, Length, and Straightness All applicable requirements of AMS2242. 3.7.2 Flatness Flatness tolerance for product 36 inches (914 mm) and under in width shall be 5% if nom
40、inal thickness is under 0.025 inch (0.64 mm) and 3% if nominal thickness is 0.025 to 0.1875 inch (0.64 to 4.762 mm), exclusive. Flatness tolerance for product under 0.1875 inch (4.762 mm) in nominal thickness and over 36 inches (914 mm) in width and for product 0.1875 inch (4.762 mm) and over in nom
41、inal thickness in all widths shall be as agreed upon by purchaser and producer. 3.7.2.1 Flatness shall be determined from the expression 100H/L where “H“ is the distance from the straight edge to the product at the point of greatest separation and “L“ is the distance between contact points of a stra
42、ight edge laid in any direction on the product. 3.7.2.2 Flatness tolerances do not apply to coiled products. 3.8 Production, distribution, and procurement of metal stock shall comply with AS6279. This requirement becomes effective November 1, 2018. SAE INTERNATIONAL AMS4917J Page 6 of 8 4. QUALITY A
43、SSURANCE 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 testing deemed necessary to ensure
44、 that the product conforms to specified requirements. 4.2 Classification of Tests All technical requirements are acceptance tests and shall be performed on each heat or lot as applicable. 4.3 Sampling and Testing Shall be in accordance with AMS2368 and the following; a lot shall be all product of th
45、e same nominal size from the same heat processed at the same time and annealed in the same heat treatment batch: 4.3.1 Composition One sample from each heat, except that for hydrogen determinations one sample from each lot obtained after thermal and chemical processing is completed. 4.3.2 Tensile Pr
46、operties, Bending, Microstructure, Surface Contamination and Tensile Properties after Precipitation Heat Treatment At least one sample from each lot. 4.3.2.1 Specimens for tensile tests of widths 9 inches (229 mm) and over shall be taken with the axis of the specimen perpendicular to the direction o
47、f rolling; for widths under 9 inches (229 mm), specimens shall be taken with the axis parallel to the direction of rolling. 4.3.2.2 Bend Specimens Whenever possible, the specimen shall be long enough to permit two separate bends so that each surface is tested in tension, or two specimens may be util
48、ized. 4.3.3 Ultrasonic Quality When required by 3.6.2, each plate. 4.3.4 Other Requirements As agreed upon by purchaser and producer. 4.4 Reports 4.4.1 The producer shall furnish with each shipment a report showing producer identity, country where the metal was melted (i.e., final melt in the case o
49、f metal processed by multiple melting operations), the results of tests for composition of each heat and for the hydrogen content and tensile and bending properties of each lot, ultrasonic examination (if applicable), and stating that the product conforms to the other technical requirements. This report shall include the purchase order number, heat and lot numbers, AMS4917J, specific solution heat and pr
