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/AMS2249G AEROSPACE MATERIAL SPECIFICATION AMS2249 REV. G Issued 1961-01 Revised 2
5、009-07 Reaffirmed 2013-10 Superseding AMS2249F Chemical Check Analysis Limits Titanium and Titanium Alloys RATIONALE AMS2249G has been reaffirmed to comply with the SAE five-year review policy. 1. SCOPE 1.1 Form This specification defines limits of variation for determining acceptability of the comp
6、osition of cast or wrought titanium and titanium alloy parts and material acquired from a producer. 1.2 Application 1.2.1 When specifically referenced in the material specification, the purchaser may apply check analysis limits to determine the acceptability of parts and materials at purchaser final
7、 acceptance or verification testing operation. 1.2.2 Check analysis limits are not for producers use at producers acceptance testing. Composition of parts and materials must conform to the limits of the material specification. Check limits are not permitted for ladle or ingot analysis. 2. APPLICABLE
8、 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 document unless a specific document issue is specified. When the referenced document has
9、been cancelled and no superseding document has been specified, the last published issue of that document shall apply. 2.1 ASTM Publications Available from ASTM, 100 Barr Harbor Drive, P. O. Box C700, West Conshohocken, PA 19428-2959, Tel: 610-832-9585,www.astm.org. ASTM E 539 X-Ray Emission Spectrom
10、etric Analysis of 6AI-4V Titanium Alloy ASTM E 1409 Determination of Oxygen and Nitrogen 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
11、 E 1941 Determination of Carbon in Refractory and Reactive Metals and Their Alloys ASTM E 2371 Analysis of Titanium and Titanium Alloys by Atomic Emission Plasma Spectrometry Copyright SAE International Provided by IHS under license with SAENot for ResaleNo reproduction or networking permitted witho
12、ut license from IHS-,-,-SAE INTERNATIONAL AMS2249G Page 2 of 4 3. TECHNICAL REQUIREMENTS 3.1 Analytical Procedures Referee methods of analysis shall be ASTM E 1409 for oxygen and nitrogen, ASTM E 1447 for hydrogen, and ASTM E 1941 for carbon. Other elements shall be determined by ASTM E 2371, or AST
13、M E 539 for 6Al4V. 3.2 Check (Product) Analysis Limits Shall be shown in Table 1. Check analysis limits for elements or for ranges of elements not listed herein shall be as specified in the applicable material specification or as agreed upon by purchaser and vendor. TABLE 1 - CHECK ANALYSIS LIMITS E
14、lement Limits or Maximum of Specified Range, % Variation Under Min or Over Max Carbon Up to 0.20, incl 0.02 Over 0.20 to 0.50, incl 0.04 Over 0.50 0.06 Manganese Up to 0.30, incl 0.10 Over 0.30 to 6.00, incl 0.20 Over 6.00 to 9.00, incl 0.25 Chromium Up to 1.00, incl 0.05 Over 1.00 to 4.00, incl 0.2
15、0 Over 4.00 0.25 Molybdenum Up to 0.50, incl 0.04 Over 0.50 to 1.00, incl 0.10 Over 1.00 to 10.00, incl 0.20 Over 10.00 to 30.00, incl 0.25 Aluminum Up to 1.00, incl 0.12 Over 1.00 to 10.00, incl 0.40 Over 10.00 to 30.00, incl 0.50 Hydrogen Up to 0.020, ( 200 ppm), incl 0.0020 ( 20 ppm) Over 0.020 t
16、o 0.050, ( 200 to 500 ppm), incl 0.005 ( 50 ppm) Over 0.050 ( 500 ppm), 0.010 (100 ppm) Nitrogen Up to 0.10, (1000 ppm), incl 0.02 (200 ppm) Oxygen Up to 0.20, (2000 ppm), incl 0.02 (200 ppm) Over 0.20 (2000 ppm) 0.03 (300 ppm) Iron Up to 0.25, incl 0.10 Over 0.25 to 0.50, incl 0.15 Over 0.50 to 5.0
17、0, incl 0.20 Over 5.00 0.25 Vanadium Up to 0.50, incl 0.05 Over 0.50 to 5.00, incl 0.15 Over 5.00 to 6.00, incl 0.20 Over 6.00 to 10.00, incl 0.30 Over 10.00 to 20.00, incl 0.40 Tin Up to 3.00, incl 0.15 Over 3.00 to 6.00, incl 0.25 Over 6.00 to 12.00, incl 0.40 Copper Up to 1.00, incl 0.05 Over 1.0
18、0 to 3.00, incl 0.10 Copyright SAE International Provided by IHS under license with SAENot for ResaleNo reproduction or networking permitted without license from IHS-,-,-SAE INTERNATIONAL AMS2249G Page 3 of 4 TABLE 1 - CHECK ANALYSIS LIMITS (CONTINUED) Element Limits or Maximum of Specified Range, %
19、 Variation Under Min or Over Max Zirconium Up to 4.00, incl 0.10 Over 4.00 to 6.00, incl 0.20 Over 6.00 to 10.00, incl 0.30 Over 10.00 0.40 Columbium Up to 1.00, incl 0.10 Over 1.00 to 5.00, incl 0.15 Over 5.00 to 7.00, incl 0.20 Over 7.00 to 10.00, incl 0.25 Over 10.00 to 15.00, incl 0.30 Over 15.0
20、0 to 20.00, incl 0.35 Over 20.00 to 30.00, incl 0.40 Tantalum Up to 0.50, incl 0.10 Over 0.50 to 2.00, incl 0.15 Silicon Up to 0.10, incl 0.02 Over 0.10 to 0.50, incl 0.05 Bismuth Up to 0.50, incl 0.05 Yttrium Up to 0.005, incl 0.0006 Over 0.005 to 0.020, incl 0.001 Boron Up to 0.005, incl 0.0006 Pa
21、lladium Up to 0.250, incl 0.02 Nickel Up to 1.00, incl 0.03 Tungsten Up to 1.00, incl 0.04 Over 1.00 to 3.00, incl 0.10 Over 3.00 to 5.00, incl 0.15 Over 5.00 to 10.00, incl 0.20 4. QUALITY ASSURANCE PROVISIONS 4.1 Sampling and Testing For the purpose of determining conformance to the material speci
22、fication composition requirement, each heat or lot, whichever is applicable, in the shipment shall be considered separately. All samples shall be taken from material in the condition in which it is received, except that all protective surface treatments shall be removed before sampling finished part
23、s. Drillings, chips, and other samples shall be taken without the application of water, oil, or other lubricants and shall be free from scale, grease, dirt, and other foreign materials. Samples shall be taken to prevent alteration of the chemical composition of the sample. 5. PREPARATION FOR DELIVER
24、Y Not applicable. 6. ACKNOWLEDGMENT Not applicable. 7. REJECTIONS Not applicable. Copyright SAE International Provided by IHS under license with SAENot for ResaleNo reproduction or networking permitted without license from IHS-,-,-SAE INTERNATIONAL AMS2249G Page 4 of 4 8. NOTES 8.1 A change bar (|)
25、located 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
26、revisions. Change bars and (R) are not used in original publications, nor in documents that contain editorial changes only. 8.2 Terms used in AMS are clarified in ARP1917 and as follows: 8.2.1 Check Analysis An analysis made by purchaser or vendor of the metal after it has been worked into semi-fini
27、shed or finished forms or fabricated into parts, and is either for the purpose of verifying the composition of a heat or lot or to determine variations in the composition within the heat. Acceptance or rejection of a heat or lot of material or batch of parts may be made by the purchaser on the basis
28、 of this check analysis. In the analysis of finished parts, these values do not apply to elements whose percentage can be varied by fabricating techniques employed (for example oxygen, nitrogen, hydrogen) unless the sample is sufficiently large to produce a reliable result. 8.2.2 Variation Limit, Un
29、der Minimum or Over Maximum Given in Table 1 is the amount an individual determination for a specified element may vary under or over the specified composition limit. In no case shall the several determinations of any element in a heat, using the same analytical procedure, vary both above and below
30、the specified range. These variations are not permitted for ingot analyses made by the producer. 8.2.3 Remainder Shows the basis element from which the alloy is made and is assumed to be present in an amount approximately equal to the difference between 100% and the sum percentage of the alloying el
31、ements and listed impurities. Analysis for this element need not be made nor need a percentage figure be reported. 8.2.4 Other Elements, Each, Maximum The maximum amount of an individual element not mentioned specifically in the tabulated composition that may be present. Producer normally will analy
32、ze only for impurities which are possible to be present because of raw materials or manufacturing processes and which may affect the product significantly. Others will analyze for impurities as they deem necessary. 8.2.5 Other Elements, Total, Maximum The sum percentage of the other (residual) eleme
33、nts (See 8.2.4) found. It is not inferred by this statement that an analysis need be made for each element of the periodic table not mentioned specifically in the tabulated composition. 8.2.6 Heat All metal that, during the final melting operation, is melted in the same furnace crucible and solidified in the same ingot mold. 8.2.7 Lot All product of the same size processed at the same time from the same heat. PREPARED BY AMS COMMITTEE “G” Copyright SAE International Provided by IHS under license with SAENot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
