1、_ 6$(7HFKQLFDO6WDQGDUGV%RDUG5XOHVSURYLGHWKDW7KLVUHSRUWLVSX EOLVKHGE6$(WRDGYDQFHWKHVWDWHRIWHFKQLFDODQGHQJL neering sciences. The use of this report is entirely voluntary, and its applicability and suitability for any particular use, including any patent infringement arising therefrom, LVWKHVROHUHVSRQ
2、VLELOLWRIWKHXVHU 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 2016 SAE International All rights reserved. No part of this publication may be reproduced,
3、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 (outside USA) Fax: 724-776-0
4、790 Email: CustomerServicesae.org SAE WEB ADDRESS: http:/www.sae.org SAE values your input. To provide feedback on this Technical Report, please visit http:/www.sae.org/technical/standards/AMS4899D AEROSPACE MATERIAL SPECIFICATION AMS4899 REV. D Issued 1996-04 Revised 2016-06 Superseding AMS4899C Ti
5、tanium Alloy, Sheet, Strip, and Plate 4.5AI - 3V - 2Fe - 2Mo Annealed (Composition similar to UNS R54700) RATIONALE AMS4899D results from a Five Year Review and update of this specification that includes the removal of sample size allowance for hydrogen of Table 1 (covered by ASTM E1447), requires a
6、greement on mechanical property values for PDWHULDORXWVLGHVSHFLILFDWLRQUDQJHV UHTXLUHVXOWUDVRQLFWHVWLQJRI DOOSODWHDQGRYHU WKHDGGLWL on of AS6279 (3.8), adds AMS2368 in sampling and resampling (4.3 and 4.5) and revises the report paragraph (4.4). 1. SCOPE 1.1 Form This specification covers a titanium
7、 alloy in the form of sheet, strip, and plate up through 4.000 inches (101.60 mm), inclusive. 1.2 Application These products have been used typically for parts requiring high fracture toughness, fatigue strength, formability, and strength up to 480 F (249 C), but usage is not limited to such applica
8、tions. This alloy is superplastic between 1330 F (721 C) and 1520 F (627 C) and hot formable from 1200 to 1560 F (649 to 849 C). 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 extent specified herein.
9、 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. 2.1 SAE Publications Available from SAE
10、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 Steel, Iron Alloy, Titanium, and Titanium Alloy Sheet, Strip, and Plate AMS2249 Chemical Check A
11、nalysis Limits, Titanium and Titanium Alloys SAE INTERNATIONAL AMS4899D Page 2 of 7 AMS2368 Sampling and Testing of Wrought Titanium Raw Materials, Except Forging and Forging Stock AMS2631 Ultrasonic Inspection, Titanium and Titanium Alloy Bar, Billet and PlateAMS2750 Pyrometry AMS2809 Identificatio
12、n, Titanium and Titanium Alloy Wrought Products AS6279 Industry Standard Practices 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
13、.org. ASTM E8/E8M Tension Testing of Metallic Materials ASTM E290 Bend Testing Material for Ductility ASTM E384 Knoop and Vickers Hardness of Materials ASTM E1409 Determination of Oxygen and Nitrogen in Titanium and Titanium Alloys by the Inert Gas Fusion Technique ASTM E1447 Determination of Hydrog
14、en in Titanium and Titanium Alloys by the Inert Gas Fusion Conductivity/Infrared Detection Method ASTM E1941 Determination of Carbon in Refractory and Reactive Metals and Their Alloys by Combustion Analysis ASTM E2371 Analysis of Titanium and Titanium Alloys by Direct Current Plasma and Inductively
15、Coupled Plasma Atomic Emission Spectrometry 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
16、other elements in accordance with ASTM E2371. Other analytical methods may be used if acceptable to the purchaser. Table 1 - Composition Element min max Aluminum 4.00 5.00 Vanadium 2.50 3.50 Molybdenum 1.80 2.20 Iron 1.70 2.30 Oxygen - 0.15 Carbon - 0.08 Nitrogen - 0.05 (500 ppm) Hydrogen - 0.015 (1
17、50 ppm) Yttrium (3.1.1) - 0.005 ( 50 ppm) Other Elements, each (3.1.1) - 0.10 Other Elements, total (3.1.1) - 0.40 Titanium remainder SAE INTERNATIONAL AMS4899D Page 3 of 7 3.1.1 Determination not required for routine acceptance. 3.1.2 Check Analysis Composition variations shall meet the applicable
18、requirements of AMS2249. 3.2 Melting Practice 3.2.1 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 usi
19、ng vacuum arc remelting (VAR) practice. Alloy additions are not permitted in the final melt cycle. 3.2.1.1 The atmosphere for nonconsumable electrode melting shall be vacuum or shall be argon and/or helium at an absolute pressure not higher than 1000 mm of mercury. 3.2.1.2 The electrode tip for nonc
20、onsumable electrode melting shall be water-cooled copper. 3.3 Condition The product shall be supplied in the following condition: 3.3.1 Sheet and Strip Hot rolled with or without subsequent cold reduction, annealed, descaled, and leveled, having a surface appearance comparable to the following comme
21、rcial corrosion-resistant steel finishes as applicable (see 8.2). 3.3.1.1 Sheet Shall be No. 2D finish. 3.3.1.2 Strip Shall be No. 1 finish. 3.3.2 Plate Hot rolled, annealed, descaled, and flattened, having a surface appearance comparable to a commercial corrosion-resistant steel No. 1 finish or No.
22、 2D finish (see 8.2). Plate product shall be produced using standard industry practices designed strictly for the production of plate stock to the procured thickness. Bar, billet, forgings, or forging stock shall not be substituted for plate. 3.4 Annealing The product shall be annealed by heating to
23、 a temperature within the range 1260 to 1400 F (682 to 760 C), holding at the selected temperature within 25 F (14 C) for a time commensurate with product thickness and the heating equipment and procedure used, and cooling at a rate which will produce product meeting the requirements of 3.5. Pyromet
24、ry shall be in accordance with AMS2750. SAE INTERNATIONAL AMS4899D Page 4 of 7 3.5 Properties The product shall conform to the following requirements and shall meet the requirements of 3.5.1 and 3.5.2 after being reheated to 1325 F 25 F (718 C 14 C), held at heat for 20 minutes, 5 minutes, and coole
25、d at a rate equivalent to an air cool or slower. 3.5.1 Tensile Properties Shall be as shown 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
26、) through the 0.2% offset yield strain. Table 2A - Minimum tensile properties, inch/pound units Nominal Thickness Inch Tensile Strength ksi Yield Strength at 0.2% Offset ksi Elongation in 2 inches or 4D % Up to 0.008, excl 134 126 - Over 0.008 to 0.025, excl 134 126 6 Over 0.025 to 0.063, excl 134 1
27、26 8 Over 0.063 to 0.187, excl 134 126 10 Over 0.187 to 4.000, incl 130 120 10 Table 2B - Minimum tensile properties, SI units Nominal Thickness Millimeters Tensile Strength MPa Yield Strength at 0.2% Offset MPa Elongation in 50.8 mm or 4D % Up to 0.20, excl 924 869 - Over 0.20 to 0.64, excl 924 869
28、 6 Over 0.64 to 1.60, excl 924 869 8 Over 1.60 to 4.75, excl 924 869 10 Over 4.75 to 101.60, incl 896 827 10 3.5.1.1 Tensile property requirements apply in both the longitudinal and transverse directions, but tests in the transverse direction need be made only on product that a specimen not less tha
29、n 8 inches (203 mm) in length for sheet and strip and 2.5 inches (63.5 mm) in length for plate can be taken. Tests in the transverse direction are not required on product tested in the longitudinal direction. 3.5.1.2 Mechanical property requirements for product outside the size range covered by 1.1
30、shall be agreed upon between purchaser and producer. 3.5.2 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 shall be bend tested in c
31、onformance with the guided bend test defined in ASTM E290 through an angle of 105 degrees. The test fixture supports shall have a contact radius 0.010 minimum, and the plunger shall have a radius equal to the bend factor shown in Table 3 times the nominal thickness. Examination of the bent sample sh
32、all not show evidence of cracking when examined at 15 to 25X magnification. Table 3 - Bending factor Nominal Thickness Inch Nominal Thickness Millimeters Bend Factor Up to 0.070, incl Up to 1.78, incl 4.5 Over 0.070 to 0.1875, excl Over 1.78 to 4.762, excl 5 SAE INTERNATIONAL AMS4899D Page 5 of 7 3.
33、5.3 Microstructure Shall be that structure resulting from alpha-beta processing. Microstructure shall conform to 3.5.3.1, 3.5.3.2, 3.5.3.3, 3.5.3.4. A microstructure showing a continuous network of alpha in prior beta grain boundaries is not acceptable. 3.5.3.1 Lamellar alpha with some equiaxed alph
34、a in a transformed beta matrix. 3.5.3.2 Equiaxed alpha in a transformed beta matrix. 3.5.3.3 Equiaxed alpha and/or elongated alpha in a transformed beta matrix. 3.5.3.4 Partially broken and distorted grain boundary alpha with plate-like alpha. 3.5.4 Surface Contamination The product shall be free of
35、 any oxygen-rich layer, such as alpha case or other surface contamination, determined as in 3.5.4.1 or 3.5.4.2 or 3.5.4.3, or other method acceptable to purchaser. 3.5.4.1 The bend test of 3.5.2. 3.5.4.2 Microscopic examination at 400X minimum. 3.5.4.3 Hardness difference; a surface hardness more th
36、an 40 points higher than the subsurface hardness, determined in accordance with ASTM E384 on the Knoop scale or the Vickers scale using a 200 gram load, shall be evidence of unacceptable surface contamination. 3.6 Quality 7KHSURGXFWDVUHFHLYHGESXUFKDVHUVKDOOEHXQLIRUPLQTXDOLWDQGFRQGLWLRQV RXQGDQGIUHHI
37、URPRLOFDQV see 8.3.1) of depth in excess of the flatness tolerances, ripples, and foreign materials and from imperfections detrimental to usage of the product. 3.6.1 Ultrasonic Inspection Plate 0.500 inches (12.70 mm) and over in nominal thickness shall be ultrasonically inspected in accordance with
38、 AMS2631 and shall meet Class A1 requirements of AMS2631. 3.7 Tolerances Shall conform to all applicable requirements of AMS2242. 3.7.1 Special flatness may be specified for plate; in such case, the special flatness tolerances of AMS2242 shall apply. 3.8 Production, distribution, and procurement of
39、metal stock shall comply with AS6279. This requirement becomes effective September 1, 2016. 4. QUALITY ASSURANCE 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. P
40、urchaser reserves the right to sample and to perform any confirmatory testing deemed necessary to ensure that the product conforms to specified requirements. SAE INTERNATIONAL AMS4899D Page 6 of 7 4.2 Classification of Tests 4.2.1 Acceptance Tests Composition (3.1), condition (3.3), tensile properti
41、es (3.5.1), bending (3.5.2), microstructure (3.5.3), surface contamination (3.5.4), quality (3.6), and tolerances (3.7) are acceptance tests and shall be performed on each heat or lot as applicable. 4.2.1.1 Ultrasonic inspection of each plate when required by 3.6.1. 4.2.2 Periodic Tests Tests of the
42、 product after reheating as in 3.5 for tensile properties (3.5.1) and bending (3.5.2) are periodic tests and shall be performed at a frequency selected by the producer unless frequency of testing is specified by purchaser. 4.3 Sampling and Testing Shall be in accordance with AMS2368 and the followin
43、g; a lot shall be all product of the same nominal size from the same heat processed at the same time. 4.3.1 For Acceptance Tests 4.3.1.1 Composition One sample from each heat, except that for hydrogen determinations one sample from each lot obtained after thermal and chemical processing is completed
44、. 4.3.1.2 Tensile Properties, Bending, Microstructure, and Surface Contamination One or more samples from each lot for each requirement. 4.3.1.2.1 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 of rolling;
45、for widths between 2 and 8.9 inches (51 and 226 mm), specimens shall be taken with the axis parallel to the direction of rolling. Length requirements of 3.5.1.1 apply in all cases. 4.3.1.3 Ultrasonic Quality Each plate when required (3.6.1). 4.4 Reports 4.4.1 The producer shall furnish with each shi
46、pment a report showing producer identity, country where the metal was melted (e.g., final melt in the case of metal processed by multiple melting operations), the results of tests for composition of each heat and for the hydrogen content, tensile properties, bending, microstructure, and surface cont
47、amination of each lot, and ultrasonic inspection of each plate, when required, and state that the product conforms to the other technical requirements. This report shall include the purchase order number, heat and lot numbers, AMS4899D, product form, size, specific annealing 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 In accordance with AMS2368. SAE IN
