1、6 ?o -W MIL-S-22141B Amendment 1 16 April 1984 MILITARY SPECIFICATION STEEL, INVESTMENT CASTINGS ALLOY AND CARBON This amendment forms a part of Military Specification MIL-S-22141B, dated I3 April 1976, and is approved for use by all Departments and Agencies of the Department of Defense. Page 1 Tabl
2、e I: under column for IIConditions“, delete I1cast,lr for the following Composition numbers: IC-4130, -4140, -4335M, -4340, -4620, -6150, -8620, -8735, -8640, and -521 00. Page 4 Add: Society of Automotive Engineers, Inc. (SAE) AMs 2694 Repair Welding of Aerospace Castings (Copies of the above publi
3、cation may be obtained from the Society of Automotive Engineers, Inc., 400 Commonwealth Drive Warrendale, PA 15096) Page 5 Table II; under column for IIComposition number 211, change to “Composition number 3Ir. Change From: To : At the end of footnote llllr, delete reference to footnote 11311. Table
4、 III; for IC-4130 under “Tensile strengthf1, change “1 5,00011 to “1 50, OOO1l. Delete: 3.8 and 3.8.1 in their entirety, and substitute: “3.8 Repairing of Defects. Castings, except IC-52100 and IC - Nitralloy 135, may be weld repaired in accordance with the requirements of AMs 2694, but shall not be
5、 weld repaired in any other manner without written permission from the procuring activity. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MILS-221 41B Amendment 1 Page 10 4.1 .I Delete second sentence and substitute: lfProper foundry techniques must
6、 be established that will produce castings for each part number, that will be free from harmful imperfections. Until this is accomplished, all castings made will be subjected to radiographic examination. After these techniques are established, production castings will also be subjected to radiograph
7、ic examination as necessary to ensure maintenance of satisfactory quality. II 4.1.2 At the end of the last sentence, change: “(See 6.2)“ to “(See 6.2 and 6.4)“ Page 11 4.2.2.4.2 Delete first sentence and substitute: “A minimum of three cast tensile test specimens from the Same master heat as the lot
8、 of castings represented, shall be heat treated with the castings lot and tested to determine the acceptability of the castings . At the end of last sentence, add: “(See 4.2.1.2).“ Page 14 6.2.f At the end of last sentence. Delete: “(See 4.1.1)If and substitute “(See 4.1.2 and 6.4.3).“ Page 15 Add:
9、6.4.3 Initial Production Coupons. Initial production coupons apply only to the first lot of production castings of the same part number procured from each contractor for the life of a given contract regardless of the elapsed time between purchase orders. custodian : Amy - MR Navy - OS Reviewer: Navy - AS Army - AR, Ebl - Preparing Activity Navy - OS (Project No. MECA-0260) ,“yU.S. GOVERNMENT PRINTING OFFICE: 1984 - 705-040/A2292 O Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
