International Standard Comparative

UNS umbering Systems.

Unified Numbering Systems for Metals and Alloys

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.

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

S43036~S66545

Comparative Table

UNS Number K GROUP : Nickel and Nickel Alloys - N08825~N10665
UNS No
Description
ASTM Brand/Trp
ASTM Equivalent
UNS N08825 Fe-Ni-Cr Alloy Solid Solution Incoloy825 ASTM B163, ASTM B423, ASTM B424, ASTM B425, ASTM B704, ASTM B705
UNS N08904 Strengthened   ASTM B625, ASTM B649, ASTM B673, ASTM B674, ASTM B677
UNS N08925 Ni-Cr-Mo Alloy   ASTM B625, ASTM B649, ASTM B673, ASTM B674, ASTM B677
  Ni-Cr-Mo-Cu Alloy, Low    
  Carbon    
UNS N10001 Ni-Mo Alloy Solid Solution HastelloyB ASTM B494, ASTM B333, ASTM B335, ASTM B366, ASTM B619
  Strengthened    
UNS N10002 Ni-Mo Alloy Solid Solution HastelloyC ASTM B494
  Strengthened    
UNS N10003 Ni-Mo Alloy Solid Solution HastelloyN ASTM B366, ASTM B434, ASTM B573
  Strengthened    
UNS N10276 Ni-Mo Alloy Solid Solution HastelloyC276 ASTM B366, ASTM B574, ASTM B575, ASTM B619, ASTM B622, ASTM B626
  Strengthened    
UNS N10665 Ni-Mo Alloy HastelloyB-2 ASTM B333, ASTM B335, ASTM B366, ASTM B619, ASTM B622, ASTM B626
       
       
       
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