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 ther
2、efrom, 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
3、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 DOCUMENT ORDER: Tel: 877-606-7323 (inside USA and Canada) Tel: +1 724-776-49
4、70 (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/AMS4933F AEROSPACE MATERIAL SPECIFICATION AMS4933 REV. F Issued 1978-10 Revised 2017-03 Supers
5、eding AMS4933E Titanium Alloy Extrusions and Flash Welded Rings 8Al - 1Mo - 1V Solution Heat Treated and Stabilized (Composition similar to UNS R54810) RATIONALE AMS4933F results from a Five-Year Review and update of this specification that includes the addition of ASTM E2994 (3.1), removal of sampl
6、e size allowance for hydrogen of Table 1 (covered by ASTM E1447), requires agreement on mechanical property values for material outside specification ranges (3.5.1.1.4), the addition of AS6279 (3.8), removes requirement for specimens for room-temperature notched stress-rupture testing (4.3.2), and r
7、evises reporting (4.4). 1. SCOPE 1.1 Form This specification covers a titanium alloy in the form of extruded bars, tubes, and shapes, and flash welded rings up through 4.000 in2(25.81 cm2) cross-section and stock for flash welded rings. 1.2 Application This alloy has been used typically for parts th
8、at require high mechanical properties and are machined from product in the heat-treated condition, but usage is not limited to such applications. This alloy exhibits high strength-to-weight ratios up to 800 F (427 C), but usage is not limited to such applications. 1.2.1 Certain processing procedures
9、 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 part of this specification to the
10、 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 document shall apply. SAE INTERNATION
11、AL AMS4933F 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. AMS2245 Tolerances Titanium and Titanium Alloy Extruded Bars, Rods, and Shapes AM
12、S2249 Chemical Check Analysis Limits Titanium and Titanium Alloys AMS2368 Sampling and Testing of Wrought Titanium Raw Material Except Forgings and Forging Stock AMS2750 Pyrometry AMS2809 Identification Titanium and Titanium Alloy Wrought Products AMS7498 Rings, Flash Welded Titanium and Titanium Al
13、loys ARP982 Minimizing Stress-Corrosion Cracking in Wrought Titanium Alloy Products ARP1917 Clarification of Terms Used in Aerospace Metals Specifications AS1814 Terminology for Titanium Microstructures AS6279 Standard Practice for Production, Distribution, and Procurement of Metal Stock 2.2 ASTM Pu
14、blications 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 E21 Elevated Temperature Tension Tests of Metallic Materials ASTM E1409 Determination of Oxyge
15、n 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 and Reactive Metals and Their Alloys by Comb
16、ustion 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 Discharge Atomic Emission Spectrometry SAE INTER
17、NATIONAL AMS4933F 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 accordance with ASTM E1409, and other elements
18、 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 Aluminum 7.35 8.35 Molybdenum 0.75 1.25 Vanadium 0.75 1.25 Iron - 0.30 Oxygen - 0.12 Carbon - 0.08 Nitrogen - 0.05 (500 ppm) Hydrogen - 0.0150 (150
19、 ppm) Yttrium (3.1.1) - 0.0050 ( 50 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 Pra
20、ctice 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 under vacuum using vacuum arc remelting (VAR) practice. Alloy
21、additions are not permitted in the final (VAR) melt. 3.2.1 The atmosphere for nonconsumable electrode melting shall be vacuum or shall be inert gas at a pressure not higher than 1000 mm of mercury. 3.2.2 The electrode tip for nonconsumable electrode melting shall be water-cooled copper. 3.3 Conditio
22、n The product shall be supplied in the following condition: 3.3.1 Bars, Tubes, and Shapes Extruded, solution heat treated, stabilized, and descaled. 3.3.2 Flash Welded Rings Solution heat treated and stabilized. Flash welded rings shall not be supplied, unless specified or permitted on purchasers pa
23、rt drawing. When supplied, rings shall be manufactured in accordance with AMS7498. 3.3.3 Stock for Flash Welded Rings As ordered by the flash welded ring manufacturer. SAE INTERNATIONAL AMS4933F Page 4 of 8 3.4 Heat Treatment Bars, tubes, shapes, and flash welded rings shall be heat treated as follo
24、ws; pyrometry shall be in accordance with AMS2750: 3.4.1 Solution Heat Treatment Heat to a temperature within the range 1800 to 1850 F (982 to 1010 C), hold at the selected temperature within 25 F (14 C) for 1 hour 0.1 hour, and cool at a rate equivalent to an air cool or faster. 3.4.2 Stabilization
25、 Heat Treatment Heat to a temperature within the range 1050 to 1150 F (566 to 621 C), hold at the selected temperature within 15 F (8 C) for not less than 8 hours, and cool in air. 3.5 Properties The product shall conform to the following requirements: 3.5.1 Bars, Tubes, Shapes, and Flash Welded Rin
26、gs 3.5.1.1 Tensile Properties Shall be as follows for product 4.000 in2(25.81 cm2) and under in cross-sectional area. 3.5.1.1.1 At Room Temperature Shall be as specified in Table 2 and 3.5.1.1.3, determined in accordance with ASTM E8/E8M with the rate of strain set at 0.005 in/in/min (0.005 mm/mm/mi
27、n) and maintained within a tolerance of 0.002 in/in/min (0.002 mm/mm/min) through the 0.2% offset yield strain. Table 2 Table 2A - Minimum tensile properties, inch/pound units Nominal Cross-Sectional Area Square Inches Tensile Strength ksi Yield Strength at 0.2% Offset ksi Elongation in 2 Inches or
28、4D % Reduction of Area % Up to 2.500, excl 130 120 10 20 2.500 to 4.000, incl 125 115 10 20 Table 2B - Minimum tensile properties, SI units Nominal Cross-Sectional Area Square Centimeters Tensile Strength MPa Yield Strength at 0.2% Offset MPa Elongation in 50.8 mm or 4D % Reduction of Area % Up to 1
29、6.13, excl 896 827 10 20 16.13 to 25.81, incl 862 793 10 20 SAE INTERNATIONAL AMS4933F Page 5 of 8 3.5.1.1.2 At 800 F (427 C) Shall be as specified in Table 3 and 3.5.1.1.3, determined in accordance with ASTM E21 on specimens heated to 800 F 5 F (427 C 3 C), held at heat for 20 to 30 minutes before
30、testing, and tested at 800 F 5 F (427 C 3 C). Table 3 Table 3A - Minimum tensile properties, inch/pound units Nominal Cross-Sectional Area Square Inches Tensile Strength ksi Yield Strength at 0.2% Offset ksi Elongation in 2 Inches or 4D % Reduction of Area % Up to 2.500, excl 90 70 10 25 2.500 to 4.
31、000, incl 80 60 10 25 Table 3B - Minimum tensile properties, SI units Nominal Cross-Sectional Area Square Centimeters Tensile Strength MPa Yield Strength at 0.2% Offset MPa Elongation in 50.8 mm or 4D % Reduction of Area % Up to 16.13, excl 621 483 10 25 16.13 to 25.81, incl 552 414 10 25 3.5.1.1.3
32、The requirements of Tables 2 and 3 apply to bars, rods, and shapes tested in the longitudinal direction and to flash welded rings tested in the circumferential direction. 3.5.1.1.4 Mechanical property requirements for product outside the size range covered by 1.1 shall be agreed upon between purchas
33、er and producer. 3.5.1.2 Microstructure Shall be that structure resulting from processing within the alpha-beta phase field. Microstructure shall conform to 3.5.1.2.1. 3.5.1.2.1 Equiaxed and/or elongated primary alpha in a transformed beta matrix with no continuous network of alpha at prior beta gra
34、in boundaries. 3.5.1.3 Surface Contamination Except as specified in 3.5.1.3.1, the product shall be free of any oxygen-rich layer (see 8.2), such as alpha case, or other surface contamination, determined by microscopic examination at not lower than 400X magnification or other method agreed upon by p
35、urchaser and producer. 3.5.1.3.1 When permitted by purchaser, flash welded rings to be machined all over may have an oxygen-rich layer (see 8.2) provided such layer is removable within the machining allowance for the part. 3.5.2 Stock for Flash Welded Rings A sample of stock heat treated as in 3.4 s
36、hall conform to the requirements of 3.5.1.1. 3.6 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 usage of the product. 3.7 Tolerances Extrusions shall conform to all applicable requ
37、irements of AMS2245. SAE INTERNATIONAL AMS4933F Page 6 of 8 3.8 Production, distribution, and procurement of metal stock shall comply with AS6279. This requirement becomes effective November 1, 2018. 4. QUALITY ASSURANCE PROVISIONS 4.1 Responsibility for Inspection The producer of the product shall
38、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 Tests 4.2.1
39、Acceptance Tests The following requirements are acceptance tests and shall be performed on each heat or lot as applicable: 4.2.1.1 Composition (3.1) of each heat and hydrogen content of each lot. 4.2.1.2 Room-temperature tensile properties (3.5.1.1.1) and surface contamination (3.5.1.3) of each lot
40、of extrusions and flash welded rings. 4.2.1.3 Tolerance (3.7) of extrusions. 4.2.2 Periodic Tests The 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 Tensile properties at 800 F (4
41、27 C) (3.5.1.1.2). 4.2.2.2 Ability of stock for flash welded rings (3.5.2) to develop required properties. 4.3 Sampling and Testing Shall be in accordance with AMS2368 and as follows; a lot shall be all product of the same nominal size from the same heat, processed at the same time, and solution and
42、 stabilization heat treated in the same heat treat batch. 4.3.1 For Acceptance Tests 4.3.1.1 Composition One sample from each heat, except for hydrogen determinations one sample from each lot obtained after thermal and chemical processing is completed. 4.3.1.2 Room-Temperature Tensile Properties and
43、 Surface Contamination At least one sample from each lot. SAE INTERNATIONAL AMS4933F Page 7 of 8 4.4 Reports 4.4.1 The producer shall furnish a report showing the producer name, country where the metal was melted (i.e., final melt in the case of metal processed by multiple melting operations), resul
44、ts of tests for composition of each heat and for the hydrogen content and room-temperature tensile properties of each lot, and stating that the product conforms to the other technical requirements of this specification. This report shall include the purchase order number, heat and lot numbers, AMS49
45、33F, product form, size, part number (if applicable), specific heat treatment used, and quantity. 4.4.2 When the product size is outside the range covered by 1.1, the report shall contain a statement to that effect. 4.5 Resampling and Retesting Shall be in accordance with AMS2368. 5. PREPARATION FOR
46、 DELIVERY 5.1 Identification 5.1.1 Bars, Tubes, and Shapes In accordance with AMS2809. 5.1.2 Flash Welded Rings and Stock for Flash Welded Rings As agreed upon by purchaser and producer. 5.2 Packaging The product shall be prepared for shipment in accordance with commercial practice and in compliance
47、 with applicable rules and regulations pertaining to the handling, packaging, and transportation of the product to ensure carrier acceptance and safe delivery. Packaging shall conform to carrier rules and regulations applicable to the mode of transportation. 6. ACKNOWLEDGMENT A producer shall includ
48、e 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 rejection. 8. NOTES 8.1 Revision Indicator A change bar (l) locate
49、d 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 (R) are not used in original publications, nor in documents that contain
