MIL No. :: UNS No.
Military Specifications and Standards :: Unified Numbering Systems for Metals and Alloys

A United States defense standard, often called a military standard, "MIL-STD", "MIL-SPEC", or (informally) "MilSpecs", is used to help achieve standardization objectives by the U.S. Department of Defense. Defense standards are also used by other non-defense government organizations, technical organizations, and industry.

The UNS for Metals and Alloys provides a means of correlating many internationally used metal and alloy numbering systems administered by societies, trade associations, and individual users and producers of metals and alloys. Jointly developed by ASTM International and the Society of Automotive Engineers (SAE), it provides the uniformity necessary for efficient indexing, record keeping, data storage and retrieval, and cross-referencing.
Comparative Table6
MIL No. | UNS No. | MIL No. | UNS No. | ||
MIL A46063 | UNS A97039 | MIL S81591 | UNS S17400 | ||
MIL B46056 | UNS C83400 | MIL S81591 | UNS J92511 | ||
MIL S46070 | UNS G10300 | (IC303) | |||
MIL S46070 | UNS G10350 | MIL S81591 | UNS J03006 | ||
MIL S46070 | UNS G10400 | (IC1030) | |||
MIL T4672 | UNS C33000 | MIL S81591(17-4) | UNS J32150 | ||
MIL T4672 | UNS C33100 | MIL S81591(302) | UNS J92501 | ||
MIL T4672 | UNS C33200 | MIL S81591(304) | UNS J92610 | ||
MIL T4672 | UNS C37000 | MIL S81591(304L) | UNS J92620 | ||
MIL S81591(310) | UNS J94302 | ||||
MIL A46083 | UNS A95083 | MIL S81591(316) | UNS J92810 | ||
MIL A46083 | UNS A95456 | MIL S81591(321) | UNS J92630 | ||
MIL A46083 | UNS A97039 | MIL S81591(347) | UNS J92640 | ||
MIL A46104 | UNS A96070 | MIL S81591(410) | UNS J91152 | ||
MIL A46118 | UNS A92219 | MIL S81591(420) | UNS J91201 | ||
MIL S46128 | UNS K23080 | MIL S81591(431) | UNS J91651 | ||
MIL M46130 | UNS M14141 | MIL S81591(440A) | UNS J91606 | ||
MIL M46130 | UNS M14142 | MIL S81591(440C) | UNS J91639 | ||
MIL M46130 | UNS M14145 | MIL S81591(1020) | UNS J02000 | ||
MIL S81591(1040) | UNS J04000 | ||||
MIL M46130 | UNS M15142 | MIL S81591(1050) | UNS J05000 | ||
MIL M46130 | UNS M14145 | ||||
MIL A46173 | UNS K33370 | MIL A81596 | UNS A92024 | ||
MIL S46409(1005) | UNS G10650 | MIL A81596 | UNS A93003 | ||
MIL A46808 | UNS A92219 | MIL A81596 | UNS A95052 | ||
MIL S46850 | UNS K92810 | MIL A81596 | UNS A95056 | ||
MIL S46850 | UNS K92820 | MIL T81915 | UNS R54520 | ||
MIL S46850 | UNS K92890 | MIL T81915 | UNS R54620 | ||
MIL S46850 | UNS K93120 | MIL T81915 | UNS R56400 | ||
MIL S46889 | UNS S30115 | UNS G43406 | |||
MIL A47182 | UNS R30005 | MIL F83142 | UNS R50700 | ||
MIL S47262 | UNS T20811 | MIL F83142 | UNS R54520 | ||
MIL T50777 | UNS A92024 | MIL F83142 | UNS R54521 | ||
MIL A52174 | UNS A91100 | MIL F83142 | UNS R54550 | ||
MIL A52174 | UNS A93003 | MIL F83142 | UNS R54620 | ||
MIL A52177 | UNS A91100 | MIL F83142 | UNS R54790 | ||
MIL C81021 | UNS C17500 | MIL F83142 | UNS R54810 | ||
MIL C81021 | UNS C17510 | MIL F83142 | UNS R56400 | ||
MIL F83142 | UNS R56401 | ||||
MIL T81556 | UNS R50250 | MIL F83142 | UNS R56620 | ||
MIL T81556 | UNS R50400 | MIL F83142 | UNS R56740 | ||
MIL T81556 | UNS R50550 | MIL F83142 | UNS R58010 | ||
MIL T81556 | UNS R50700 | MIL F83142 | UNS R58030 | ||
MIL T81556 | UNS R54520 | MIL F83142 | UNS R58040 | ||
MIL T81556 | UNS R54521 | MIL F83142 | UNS R58820 | ||
MIL T81556 | UNS R54810 | MIL S83311 | UNS S45500 | ||
MIL T81556 | UNS R56400 | ||||
MIL T81556 | UNS R56401 | ||||
MIL T81556 | UNS R56620 | ||||
MIL T81556 | UNS R56740 | ||||

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