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 2013 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:/www.sae.org/technical/standards/AMS6930E AEROSPACE MATERIAL SPECIFICATION AMS6930 REV. E Issued 2004-01 Revised 2
5、014-03 Superseding AMS6930D Titanium Alloy Bars, Forgings and Forging Stock 6.0Al - 4.0V Solution Heat Treated and Aged (Composition similar to UNS R56400) RATIONALE AMS6930E results from an update of the specification that revises the hydrogen content to that of AMS4965 in Table 1, requires vacuum
6、in the first consumable electrode melt (3.2) and agreement on mechanical property values for material outside specification ranges (3.5.1.1.5 and 8.7), adds AS6279 (3.8) and revises the report paragraph (4.4). 1. SCOPE 1.1 Form This specification covers a titanium alloy in the form of round, hexagon
7、 and square bars and forgings up through 3.000 inches (76.20 mm) inclusive, rectangular bar and forgings of thickness up through 4.000 inches (101.60 mm) inclusive, and forging stock of any size (See 8.7). 1.2 Application These products have been used typically for parts that are machined after solu
8、tion heat treatment and aging and are suitable for parts requiring high strength-to-weight ratios up to moderately elevated temperatures, but usage is not limited to such applications. 1.2.1 Certain processing procedures and service conditions may cause these products to become subject to stress-cor
9、rosion 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 extent specified herein. The supplier may work to a subsequent revision of a do
10、cument 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 INTERNATIONAL AMS6930E Page 2 of 8 2.1 SAE Publications Available from SAE International, 4
11、00 Commonwealth Drive, Warrendale, PA 15096-0001, Tel: 877-606-7323 (inside USA and Canada) or 724-776-4970 (outside USA), www.sae.org. AMS2241 Tolerances, Corrosion and Heat-Resistant Steel, Iron Alloy, Titanium, and Titanium Alloy Bars and Wire AMS2249 Chemical Check Analysis Limits, Titanium and
12、Titanium Alloys AMS2368 Sampling and Testing of Wrought Titanium Raw Material, Except Forgings and Forging Stock AMS2631 Ultrasonic Inspection, Titanium and Titanium Alloy Bar and Billet AMS2643 Structural Examination of Titanium Alloys, Chemical Etch Inspection Procedure AMS2750 Pyrometry AMS2808 I
13、dentification, Forgings AMS2809 Identification, Titanium and Titanium Alloy Wrought Products ARP982 Minimizing Stress-Corrosion Cracking in Wrought Titanium Alloy Products AS6279 Industry Standard Practices for Production, Distribution, and Procurement of Metal Stock 2.2 ASTM Publications Available
14、from ASTM International, 100 Barr Harbor Drive, P.O. Box C700, West Conshohocken, PA 19428-2959, Tel: 610-832-9585, www.astm.org. ASTM E 8 / E 8M Tension Testing of Metallic Materials ASTM E 539 Analysis of Titanium Alloys by X-Ray Fluorescence Spectrometry ASTM E 1409 Determination of Oxygen and Ni
15、trogen in Titanium and Titanium Alloys by the Inert Gas Fusion Technique ASTM E 1447 Determination of Hydrogen in Titanium and Titanium Alloys by the Inert Gas Fusion Thermal Conductivity/Infrared Detection Method ASTM E 1941 Determination of Carbon in Refractory and Reactive Metals and Their Alloys
16、 by Combustion Analysis ASTM E 2371 Analysis of Titanium and Titanium Alloys by Direct Current Plasma and Inductively 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 accor
17、dance with ASTM E 1941, hydrogen in accordance with ASTM E 1447, oxygen and nitrogen in accordance with ASTM E 1409, and other elements in accordance with ASTM E 539 or ASTM E 2371. Other analytical methods may be used if acceptable to the purchaser. SAE INTERNATIONAL AMS6930E Page 3 of 8 TABLE 1 -
18、COMPOSITION Element min max Aluminum 5.50 6.75 Vanadium 3.50 4.50 Iron - 0.30 Oxygen - 0.20 Carbon - 0.08 Nitrogen - 0.05 (500 ppm) Hydrogen (3.1.2) - 0.0125 (125 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 3.1.1 D
19、etermination not required for routine acceptance. 3.1.2 When using ASTM E 1447 for hydrogen determination, sample size may be as large as 0.35 gram. 3.1.3 Check Analysis Composition variations shall meet the applicable requirements of AMS2249. 3.2 Melting Practice Alloy shall be multiple melted. The
20、 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 additions are not permitted in the final
21、melt cycle. 3.2.1 The atmosphere for nonconsumable electrode melting shall be vacuum or shall be argon 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. 3.3 Condition The product shall be su
22、pplied in the following condition 3.3.1 Bars Hot finished with or without subsequent cold reduction, solution heat treated, aged, and descaled. A machined or ground surface is permitted unless prohibited by the purchaser. The product shall be processed to the final thickness/diameter by metallurgica
23、l working operations prior to any straightening, dimensional sizing or surface finishing operations. Bar shall not be cut from plate. 3.3.2 Forgings Solution heat treated, aged, and descaled. 3.3.3 Stock for Forging As ordered by the forging manufacturer. 3.4 Heat Treatment Bars and forgings shall b
24、e solution heat treated and aged by heating in a suitable atmosphere to 1750 F 25 (954 C 14), holding at heat for 1 to 2 hours, and quenching in agitated water, and aged by heating to a temperature within the range 900 to 1150 F (482 to 621 C), holding at the selected temperature within 15 F (8 C) f
25、or 4 to 8 hours, and cooling in air. Pyrometry shall be in accordance with AMS2750. SAE INTERNATIONAL AMS6930E Page 4 of 8 3.5 Properties The product shall conform to the following requirements 3.5.1 Bars and Forgings as Solution Heat Treated and Aged Shall be as specified in Table 2 for round, squa
26、re, and hexagonal bars, and forgings, and as specified in Table 3 for rectangular bars. Properties of forgings having shapes and dimensions not readily classified by nominal diameter or distance between parallel sides as in Table 2 shall be as agreed upon by purchaser and vendor. 3.5.1.1 Tensile Pro
27、perties Shall be determined in accordance with ASTM E 8/E 8M 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. 3.5.1.1.1 Tensile property requirements apply
28、 in both the longitudinal and transverse directions. Transverse tensile properties of Table 2 and Table 3 apply only to product that a test specimen not less than 2.50 inches (63.5 mm) in length can be obtained. 3.5.1.1.2 Specimens for the longitudinal requirements in Table 2 and Table 3 shall be ta
29、ken with the axis of the specimen within 15 degrees of parallel to the grain flow. 3.5.1.1.3 Yield strength and reduction of area requirements do not apply to product under 0.125 inch (3.18 mm) in nominal diameter. TABLE 2 - MINIMUM TENSILE PROPERTIES, ROUNDS, SQUARES, HEXAGONS (SEE 8.2) Nominal Dia
30、meter or Distance Between Parallel Sides Inches (mm) Tensile Strength ksi (MPa) Yield Strength At 0.2% Offset ksi (MPa) Elongation in 2 Inches (50.8 mm) or 4D, % Reduction of Area % Up to 0.500 (12.70) incl 165 (1137) 155 (1068) 10 20 Over 0.500 (12.70) to 1.00 (25.40) incl 160 (1103) 150 (1034) 10
31、20 Over 1.00 (25.40) to 1.50 (38.10) incl 155 (1068) 145 ( 999) 10 20 Over 1.50 (38.10) to 2.00 (50.40) incl 150 (1034) 140 ( 965) 10 20 Over 2.00 (50.40) to 3.00 (76.20) incl 140 ( 965) 130 ( 896) 10 20 TABLE 3 - MINIMUM TENSILE PROPERTIES, RECTANGLES (SEE 8.2) Least Distance Between Parallel Sides
32、 Inches (mm) Width Inches (mm) Tensile Strength ksi (MPa) Yield Strength at 0.2% Offset ksi (MPa) Elongation in 2 Inches (50.8 mm) or 4D, % Reduction of Area % Up to 0.500 (12.70) incl Up to 8.00 (203.2) incl 160 (1103) 150 (1034) 10 25 Over 0.500 (12.70) to 1.000 (25.4) incl Over 0.50 (12.70) to 4.
33、00 (101.6) incl 155 (1068) 145 (999) 10 20 Over 4.00 (101.6) to 8.00 (203.2) incl 150 (1034) 140 (965) 10 20 Over 1.000 (25.40) to 1.500 (38.10) incl Over 1.00 (25.4) to 4.00 (101.6) incl 150 (1034) 140 (965) 10 20 Over 4.00 (101.6) to 8.00 (203.2) incl 145 (999) 135 (930) 10 20 Over 1.500 (38.10) t
34、o 2.000 (50.80) incl Over 1.50 (38.1) to 4.00 (101.6) incl 145 (999) 135 (930) 10 20 Over 4.00 (101.6) to 8.00 (203.2) incl 140 (965) 130 (896) 10 20 Over 2.000 (50.80) to 3.000 (76.20) incl Over 2.00 (50.8) to 8.00 (203.2) incl 135 (930) 125 (861) 10 6 20 10 Over 3.000 (76.20) to 4.000 (101.6) incl
35、 Over 3.00 (76.2) to 8.00 (203.2) incl 130 (896) 120 (827) 8 6 15 10 3.5.1.1.4 Values in brackets apply to the short transverse direction for short transverse dimensions of 3.00 inches or greater. SAE INTERNATIONAL AMS6930E Page 5 of 8 3.5.1.1.5 Mechanical property requirements for product outside t
36、he size range covered by Tables 2 and 3 shall be agreed upon between purchaser 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 or 3.5.1.2.2 (See 8.3). 3.5.1.2.1 Equiaxed and/or elongat
37、ed primary alpha in a transformed beta matrix with no continuous network of alpha at prior beta grain boundaries. 3.5.1.2.2 Primary alpha in an aged transformed beta matrix. 3.5.1.2.3 A microstructure showing a continuous network of alpha in prior beta grain boundaries is not acceptable. 3.5.1.3 Sur
38、face Contamination Except as specified in 3.5.1.3.1, the product shall be free of any oxygen-rich layer (See 8.4), such as alpha case, or other surface contamination, determined by microscopic examination at not lower than 400X magnification or by other method agreed upon by purchaser and vendor. 3.
39、5.1.3.1 When permitted by purchaser, product to be machined all over may have an oxygen-rich layer, provided such layer is removable within the machining allowance on the product. 3.5.1.4 Macrostructure Product shall be uniform in quality and condition, homogenous, sound, and free from foreign mater
40、ials and from internal imperfections detrimental to fabrication or performance of parts. 3.5.2 Forging Stock When a sample of stock is forged to a test coupon and heat treated as in 3.4, specimens taken from the heat treated coupon shall conform to the requirements of 3.5.1.1. If specimens taken fro
41、m the stock after heat treatment as in 3.4 conform to the requirements of 3.5.1.1, the tests shall be accepted as equivalent to tests of a forged coupon. 3.6 Quality The product, as received by purchaser, shall be uniform in quality and condition, sound, and free from foreign materials and from impe
42、rfections detrimental to usage of the product. 3.6.1 Ultrasonic Inspection Product 0.500 inch (12.70 mm) to 1.500 inches (38.10 mm) inclusive in nominal thickness, diameter or least distance between parallel sides shall meet Class A1 requirements of AMS2631. Product over 1.500 inches (38.10 mm) in n
43、ominal thickness, diameter or least distance between parallel sides shall meet Class A requirements of AMS2631. 3.7 Tolerances Bars shall conform to all applicable requirements of AMS2241. 3.8 Production, distribution, and procurement of metal stock shall comply with AS6279. This requirement becomes
44、 effective October 1, 2015. 4. QUALITY ASSURANCE PROVISIONS 4.1 Responsibility for Inspection The vendor of the product shall supply all samples for vendors tests and shall be responsible for the performance of all required tests. Purchaser reserves the right to sample and to perform any confirmator
45、y testing deemed necessary to ensure that the product conforms to the specified requirements. SAE INTERNATIONAL AMS6930E Page 6 of 8 4.2 Classification of Tests 4.2.1 Acceptance Tests The following requirements are acceptance tests and shall be performed on each heat or lot as applicable. 4.2.1.1 Co
46、mposition (3.1) of each heat. 4.2.1.2 Hydrogen content (3.1), tensile properties (3.5.1.1), microstructure (3.5.1.2), surface contamination (3.5.1.3), and macrostructure (3.5.1.4), of each lot of bars and forgings. 4.2.1.3 Ultrasonic quality (3.6.1) of each bar, forging or forging stock. 4.2.1.4 Tol
47、erances (3.7) of bars. 4.2.2 Periodic Tests Ability of forging stock (3.5.2) to develop specified properties is a periodic test and shall be performed at a frequency selected by the vendor unless frequency of testing is specified by purchaser. 4.3 Sampling and Testing Shall be in accordance with AMS
48、2368 and as follows: 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 At least one sample from each heat, except that for hydrogen determinations one sample from each lot obtained after all thermal and c
49、hemical processing is completed. 4.3.1.2 Tensile Properties At least one sample from bars from each lot. The number, location, and orientation of samples from each lot of forgings shall be as agreed upon by purchaser and vendor. 4.3.1.3 A specimen at least 0.5 inch (12.7 mm) long by full cross-section from each end of the bars selected for sampling shall be macrostructurally examined for confor
