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/AMS2249H AEROSPACE MATERIAL SPECIFICATION AMS2249 REV. H Issued 1961-01 Reaffirmed 2013-10 Revi
5、sed 2017-06 Superseding AMS2249G Chemical Check Analysis Limits Titanium and Titanium Alloys RATIONALE AMS2249H is a Five-Year Review and update of this specification that adds ASTM E2994. 1. SCOPE 1.1 Form This specification defines limits of variation for determining acceptability of the compositi
6、on 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 acce
7、ptance 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 DOCU
8、MENTS 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 been
9、cancelled and no superseding document has been specified, the last published issue of that document shall apply. 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.s
10、ae.org. ARP1917 Clarification of Terms Used in Aerospace Metals Specifications SAE INTERNATIONAL AMS2249H Page 2 of 5 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. ASTM E539 Analysis o
11、f Titanium Alloys by X-Ray Fluorescence Spectrometry 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 E1
12、941 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 Coupled Plasma Atomic Emission Spectrometry ASTM E2994 Analysis of Titanium and Titanium Alloys by Spark
13、Atomic Emission Spectrometry and Glow Discharge Atomic Emission Spectrometry 3. TECHNICAL REQUIREMENTS 3.1 Analytical Procedures Referee methods of analysis shall be ASTM E1409 for oxygen and nitrogen, ASTM E1447 for hydrogen, and ASTM E1941 for carbon. Other elements shall be determined by ASTM E23
14、71, ASTM E539, or ASTM E2994. 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. SAE INTERNATIONAL AMS2
15、249H Page 3 of 5 Table 1 - Check analysis limits Element 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
16、 Up to 1.00, incl 0.05 Over 1.00 to 4.00, incl 0.20 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 0.0
17、20, ( 200 ppm), incl 0.0020 ( 20 ppm) 0.005 ( 50 ppm) 0.010 (100 ppm) Over 0.020 to 0.050, ( 200 to 500 ppm), incl Over 0.050 ( 500 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) Up to 0.25, incl 0.10
18、Over 0.25 to 0.50, incl 0.15 Over 0.50 to 5.00, 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, in
19、cl 0.40 Copper Up to 1.00, incl 0.05 Over 1.00 to 3.00, incl 0.10 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
20、.00 to 15.00, incl 0.30 Over 15.00 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
21、Boron Up to 0.005, incl 0.0006 SAE INTERNATIONAL AMS2249H Page 4 of 5 Palladium 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
22、Testing For the purpose of determining conformance to the material specification 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 prot
23、ective surface treatments shall be removed before sampling finished parts. 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 alterati
24、on of the chemical composition of the sample. 5. PREPARATION FOR DELIVERY Not applicable. 6. ACKNOWLEDGMENT Not applicable. 7. REJECTIONS Not applicable. 8. NOTES 8.1 Revision Indicator A change bar (l) located in the left margin is for the convenience of the user in locating areas where technical r
25、evisions, 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 conta
26、in 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-finished or finished forms or fabricated into parts, and is either for the purpose of verifying the c
27、omposition 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 of this check analysis. In the analysis of finished parts, these values do not apply to elements
28、 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, Under Minimum or Over Maximum Given in Table 1 is the amount an individual determination for a spec
29、ified 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 the specified range. These variations are not permitted for ingot analyses made by the producer.
30、SAE INTERNATIONAL AMS2249H Page 5 of 5 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 elements and listed impurities. Analysis for this element ne
31、ed 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 analyze only for impurities which are possible to be present be
32、cause 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) elements (see 8.2.4) found. It is not inferred by this statemen
33、t 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”
