International Standard Comparative

UNS umbering Systems.

Unified Numbering Systems for Metals and Alloys


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.

UNS Number C GROUP : Copper and Copper Alloys

C10100~C11300 | C11400~C16200 | C16500~C37000 | C37700~C65100

C84400~C94400 | C94500~C99500

UNS Number F GROUP : Cast Irons

F10001~F24830 | F25530~F47003

UNS Number G GROUP : AISI and SAE Carbon and Alloy Steels

G10050~G10250 | G10260~G11080 | G11090~G15720 | G31400~G44270 | G45200~G51600

G51601~G92600 | G92620~G98500

UNS Number J GROUP : Cast Steel (Except Tool Steels)

J02002~J13512 | J13855~J92590 | J92600~J94650

UNS Number K GROUP : Miscellaneous Steels and Ferrous Alloys

K00040~K02300 | K02301~K03017 | K03046~K07000 | K07001~K11630 | K11646~K12238

K12244~K19667 | K19965~K32550 | K32723~K93120 | K93600~K95000

UNS Number N GROUP : Nickel and Nickel Alloys

N02200~N07080 | N07353~N08811 | N08825~N10665

UNS Number S GROUP : Heat and Corrosion Refractory Metals and Alloys

S13800~S30200 | S30215~S30909 | S30940~S31654 | S31700~S35000 | S35500~S43035


Comparative Table

UNS Number A GROUP : Aluminum and Aluminum Alloys - A95082~A95357
AA Eq.
UNS A95082 Wrought Aluminum Alloy.   AA 5082  
  Non-Heat Treatable      
UNS A95083 Wrought Aluminum Alloy.   AA 5083 ASTM B209 (5083)
  Non-Heat Treatable(Wending     ASTM B210 (5083)
  Electroude)     ASTM B221(5083)
        ASTM B241 (5083)
        ASTM B247(5083)
        ASTM B345 (5083)
        ASTM B361 (5083)
        ASTM B547 (5083)
        ASTM B548 (5083)
UNS A95086 Wrought Aluminum Alloy.   AA 5086 ASTM B209 (5086)
  Non-Heat Treatable     ASTM B210 (5086)
        ASTM B221 (5086)
        ASTM B241 (5086)
        ASTM B313 (5086)
        ASTM B345 (5086)
        ASTM B361 (5086)
        ASTM B547 (5086)
        ASTM B548 (5086)
UNS A95151 Wrought Aluminum Alloy.   AA 5151  
  Non-Heat Treatable      
UNS A95154 Wrought Aluminum Alloy.   AA 5154 ASTM B209 (5154)
  Non-Heat Treatable     ASTM B210 (5154)
        ASTM B211 (5154)
        ASTM B221 (5154)
        ASTM B313 (5154)
        ASTM B236 (5154)
        ASTM B547 (5154)
        ASTM B548 (5154)
UNS A95182 Wrought Aluminum Alloy.   AA 5182  
  Non-Heat Treatable
UNS A95183 Wrought Aluminum Alloy.   AA 5183 SFA 5.10 (ER5183)
  Non-Heat Treatable      
UNS A95205 Wrought Aluminum Alloy.   AA 5205  
UNS A95250 Wrought Aluminum Alloy.   AA 5250  
  Non-Heat Treatable      
UNS A95252 Wrought Aluminum Alloy.   AA 5252 ASTM B209 (5252)
  Non-Heat Treatable      
UNS A95254 Wrought Aluminum Alloy.   AA 5254 ASTM B209 (5254)
  Non-Heat Treatable     ASTM B241 (5254)
UNS A95351 Wrought Aluminum Alloy.   AA 5351  
  Non-Heat Treatable      
UNS A95052 Wrought Aluminum Alloy.   AA 5052  
  Non-Heat Treatable      
UNS A95356 Wrought Aluminum Alloy.   AA 5356 SFA 5.10 (ER5356)
  Non-Heat Treatable      
UNS A95357 Wrought Aluminum Alloy.   AA 5357  
  Non-Heat Treatable      
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