International Standard Comparative

American Iron and Steel Institute :: Unified Numbering Systems for Metals and Alloys

50x50

AISI serves as the voice of the North American steel industry in the public policy arena and advances the case for steel in the marketplace as the preferred material of choice. AISI also plays a lead role in the development and application of new steels and steelmaking technology. AISI is comprised of 21 member companies, including integrated and electric furnace steelmakers, and approximately 125 associate members who are suppliers to or customers of the steel industry.

50x50

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 Table 3

AISI & SAE No. UNS No.   AISI & SAE No. UNS No.   AISI & SAE No. UNS No.
AISI6118 UNS G21180 AISI9850 UNS G98500 AISIM-7 UNS T11307
AISI6118H H61180     AISIM-10 UNS T11310
AISI6120 UNS G61200 AISI A-2 UNS T30102 AISIM-30 UNS T11330
AISI6150 UNS G61500 AISI A-3 UNS T30103 ob AISIM-33 UNS T11333
AISI6150H H61500 AISI A-4 UNS T30104 AISIM-34 UNS T11334
    VA-5 UNS T30105 ob AISIM-36 UNS T11336
AISI8115 UNS G81150 AISI A-6 UNS T30106    
AISI8615 UNS G86150 AISI A-7 UNS T30107 AISIM-41 UNS T11341
AISI8617 UNS G86170 AISI A-8 UNS T30108 AISIM-42 UNS T11342
AISI8617H UNS H86170 AISI A-9 UNS T30109 AISIM-43 UNS T11343 ob
AISI8620 UNS G86200 AISI A-10 UNS T30110 AISIM-44 UNS T11344 ob
AISI8620H UNS H86200 AISI A-11 UNS T30111 AISIM-46 UNS T11346
AISI8622 UNS G86220 AISI D-2 UNS T30402 AISIM-47 UNS T11347 ob
AISI8622H UNS H82220 AISI D-3 UNS T30403 AISIM-48 UNS T11348
AISI8625 UNS G86250 AISI D-4 UNS T30404 AISIM-52 UNS T11352
AISI8625H UNS H86250 AISI D-5 UNS T30405 AISIM-61 UNS T11361
AISI8627 UNS G86270 AISI D-7 UNS T30407 AISIM-62 UNS T11362
AISI8627H UNS H86270        
    AISIE3310 UNS G33106 AISIO-1 UNS T31501
AISI8630 UNS G86300 AISIE4337 UNS G43376 AISIO-2 UNS T31502
AISI8630H UNS H86300 AISIE4340 UNS G73406 AISIO-6 UNS T31506
AISI8637 UNS G86370 AISIE9310 UNS G93106 AISIO-7 UNS T31507
AISI8637H UNS H86370 AISIE50100 UNS G50986 AISIP-2 UNS T51602 ob
AISI8640 UNS G86400 AISIE51100 UNS G51986 AISIP-3 UNS T51603
AISI8640H UNS H86400 AISIE52100 UNS G52986 AISIP-4 UNS T51604
AISI8542 UNS G85420     AISIP-5 UNS T51605
AISI8542H UNS H85420 AISIF-1 UNS T60601 ob AISIP-6 UNS T51606
AISI8545 UNS G85450 AISIF-2 UNS T60602 ob AISIP-20 UNS T51620
AISI8545H UNS H85450 AISIH-10 UNS T20810 AISIP-21 UNS T51621
AISI8650 UNS G86500 AISIH-11 UNS T20811 AISIS-1 UNS T41901
AISI8650H UNS H86500 AISIH-12 UNS T20812 AISIS-2 UNS T41902
AISI8655 UNS G86550 AISIH-13 UNS T20813 AISIS-4 UNS T41904
AISI8655H UNS H86550 AISIH-14 UNS T20814 AISIS-5 UNS T41905
AISI8660 UNS G86600 AISIH-19 UNS T20819 AISIS-6 UNS T41906
AISI8660H UNS H86600 AISIH-21 UNS T20821 AISIS7 UNS T41907
    AISIH-22 UNS T20822    
AISI8720 UNS G87200 AISIH-23 UNS T20823 AISI S13800 UNS S13800
AISI8720H UNS H87200 AISIH-24 UNS T20824 AISI S15500 UNS S15500
AISI8735 UNS G87350 AISIH-25 UNS T20825 ob AISI S17400 UNS S17400
AISI8740 UNS G87400 AISIH-26 UNS T20826 AISI S17700 UNS S17700
AISI8740H UNS H87400 AISIH-41 UNS T20841 AISI S30430 UNS S30430
AISI8742 UNS G87420 AISIH-42 UNS T20842    
AISI8822 UNS G88220 AISIH-43 UNS T20843 ob AISI UNS T-1 UNS T10001
AISI8822H UNS H88220 AISI L-2 UNS T61202 AISI UNS T-2 UNS T10002 ob
AISI9254 UNS G92540 AISI L-3 UNS T31203 ob AISI UNS T-4 UNS T12004
AISI9255 UNS G92550 AISI L-6 UNS T11206 AISI UNS T-5 UNS T12005
AISI9260 UNS G92600 AISI M-1 UNS T11301 AISI UNS T-6 UNS T12006
AISI9260H UNS H92600 AISI M-2 UNS T11302 AISI UNS T-8 UNS T12008
AISI9262 UNS G92620 AISI M-3(CL.1) UNS T11313 AISI UNS T-15 UNS T12015
AISI9310H UNS H93100 AISI M-3(CL 2) UNS T11323 AISI W-1 UNS T72301
AISI9262 UNS G92620 AISI M-4 UNS T11304 AISI W-2 UNS T72302
AISI9840 UNS G98400 AISI M-6 UNS T11305 AISI W-3 UNS T72305
           
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